This document discusses various types of distillation processes used to separate substances based on differences in their boiling points. It describes simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. For each type of distillation, it provides details on the apparatus used and examples of applications. Key points covered include how distillation works to convert liquids to vapor and recondense them, and how fractional distillation and steam distillation can separate mixtures.
This document discusses different types of distillation processes including simple distillation and fractional distillation. Simple distillation involves a single vaporization and condensation cycle that produces an impure distillate. Fractional distillation uses a fractionating column containing packing materials between the distillation flask and head. This allows for multiple vaporization and condensation cycles, improving separation of components in the mixture. The document describes components of distillation columns like trays, packings, reboilers and condensers and how they facilitate fractional distillation.
Presentation on fractional distillation. Introduction to distillation, fractional distillation, its principle, working, applications, advantages and disadvantages.
Distillation is a process that separates components of a liquid mixture based on differences in their volatilities in heating and cooling processes. It involves selectively boiling the more volatile components by heating the mixture and then condensing the vapor.
There are several types of distillation including simple distillation, fractional distillation, steam distillation and vacuum distillation. Simple distillation is used to separate components with large differences in volatility, while fractional distillation allows separation of mixtures with components of similar volatility by conducting multiple distillation steps. Distillation finds applications in purification of solvents, separation of essential oils, and production of alcoholic beverages and petroleum products among others. Key aspects of distillation systems include the still, condenser and
The document discusses different types of evaporators used to concentrate aqueous solutions. It describes evaporation as removing solvent like water from a solution or slurry through boiling in a vessel called an evaporator. Natural circulation evaporators use convection currents for circulation, and can have horizontal tubes with steam inside or vertical tubes with steam outside. Forced circulation evaporators improve on natural circulation units with better agitation and heat transfer. Film evaporators separate concentrated solution from vapor through a thin liquid film over the heating surface.
Distillation, History, Principle Its Types and USESRamsha Afzal
Distillation is a technique used to separate mixtures based on differences in boiling points. It works by heating the mixture to vaporize components, which are then cooled and condensed separately. There are several types of distillation including simple, fractional, steam, and vacuum distillation. Simple distillation is used when components have significantly different boiling points, while fractional distillation uses a column to separate closer-boiling components. Steam distillation isolates heat-sensitive materials, and vacuum distillation allows distilling higher-boiling mixtures. Distillation has many commercial uses such as producing fuels, solvents, and separating air into its components.
The document summarizes different types of evaporators used in industrial processes. It describes evaporators as equipment used to reduce volume, remove water, and improve storage life. It then provides details on various evaporator types including small scale methods using pans or stills, and large scale methods like calandria, climbing film, and horizontal film evaporators. Key factors affecting evaporation rates like temperature, surface area, and agitation are also summarized.
The document discusses various evaporation techniques used to concentrate solutions by removing water or other volatile solvents, including horizontal tube evaporators, vertical tube evaporators, climbing film evaporators, falling film evaporators, and forced circulation evaporators. It describes the basic principles, components, working, advantages, and applications of each evaporator type. The key purpose of evaporation is to concentrate aqueous solutions by removing water.
This document discusses different types of distillation processes including simple distillation and fractional distillation. Simple distillation involves a single vaporization and condensation cycle that produces an impure distillate. Fractional distillation uses a fractionating column containing packing materials between the distillation flask and head. This allows for multiple vaporization and condensation cycles, improving separation of components in the mixture. The document describes components of distillation columns like trays, packings, reboilers and condensers and how they facilitate fractional distillation.
Presentation on fractional distillation. Introduction to distillation, fractional distillation, its principle, working, applications, advantages and disadvantages.
Distillation is a process that separates components of a liquid mixture based on differences in their volatilities in heating and cooling processes. It involves selectively boiling the more volatile components by heating the mixture and then condensing the vapor.
There are several types of distillation including simple distillation, fractional distillation, steam distillation and vacuum distillation. Simple distillation is used to separate components with large differences in volatility, while fractional distillation allows separation of mixtures with components of similar volatility by conducting multiple distillation steps. Distillation finds applications in purification of solvents, separation of essential oils, and production of alcoholic beverages and petroleum products among others. Key aspects of distillation systems include the still, condenser and
The document discusses different types of evaporators used to concentrate aqueous solutions. It describes evaporation as removing solvent like water from a solution or slurry through boiling in a vessel called an evaporator. Natural circulation evaporators use convection currents for circulation, and can have horizontal tubes with steam inside or vertical tubes with steam outside. Forced circulation evaporators improve on natural circulation units with better agitation and heat transfer. Film evaporators separate concentrated solution from vapor through a thin liquid film over the heating surface.
Distillation, History, Principle Its Types and USESRamsha Afzal
Distillation is a technique used to separate mixtures based on differences in boiling points. It works by heating the mixture to vaporize components, which are then cooled and condensed separately. There are several types of distillation including simple, fractional, steam, and vacuum distillation. Simple distillation is used when components have significantly different boiling points, while fractional distillation uses a column to separate closer-boiling components. Steam distillation isolates heat-sensitive materials, and vacuum distillation allows distilling higher-boiling mixtures. Distillation has many commercial uses such as producing fuels, solvents, and separating air into its components.
The document summarizes different types of evaporators used in industrial processes. It describes evaporators as equipment used to reduce volume, remove water, and improve storage life. It then provides details on various evaporator types including small scale methods using pans or stills, and large scale methods like calandria, climbing film, and horizontal film evaporators. Key factors affecting evaporation rates like temperature, surface area, and agitation are also summarized.
The document discusses various evaporation techniques used to concentrate solutions by removing water or other volatile solvents, including horizontal tube evaporators, vertical tube evaporators, climbing film evaporators, falling film evaporators, and forced circulation evaporators. It describes the basic principles, components, working, advantages, and applications of each evaporator type. The key purpose of evaporation is to concentrate aqueous solutions by removing water.
Drying is defined as the removal of water or other liquids from a material through the application of heat. It involves three steps: heat transfer to the material, mass transfer of moisture to the surface and evaporation, and transfer of vapor away from the material. There are several theories that describe the drying mechanism, including diffusion, capillarity, and pressure gradient theories. The drying rate curve shows an initial adjustment period, constant rate period, falling rate periods, and an equilibrium moisture content where drying stops. Factors like material properties, air conditions, and particle size influence the drying process and rate.
1) Drying curves plot drying rate versus remaining water content and can describe the drying process in steps with changing drying rates.
2) There is an initial constant rate period where unbound surface water is removed, followed by a falling rate period where the drying rate decreases as water moves internally through the material.
3) Drying rates determined experimentally can be used to calculate drying times to design drying equipment and operations. Simplified calculations can provide useful estimates by assuming constant temperature and humidity.
This document discusses different types of fluid flow and equations related to fluid flow. It contains the following key points:
1) Laminar flow occurs when layers of a fluid flow smoothly past one another, while turbulent flow involves irregular particle movement.
2) The continuity equation states that the rate of fluid entering a pipe must equal the rate leaving, so mass is conserved.
3) Bernoulli's equation relates pressure, velocity, and height of an incompressible fluid in static equilibrium, such that the total mechanical energy at each point remains constant as fluid flows.
This document contains lecture slides from Dr. M. Subas Chandra Bose and Mrs. Sabarunisha Begum on the topic of mass transfer operations. It discusses various mass transfer concepts like diffusion, gas absorption principles, and vapor-liquid operations including distillation. The slides provide definitions and examples of different mass transfer processes and operations. They also describe concepts like the transfer unit, differential distillation, flash distillation, and continuous rectification in binary systems.
Vacuum distillation allows purification of compounds that cannot be readily distilled under normal atmospheric pressure or that may decompose at high temperatures. It works by reducing pressure above the boiling liquid, lowering the boiling point so compounds evaporate and separate based on differences in their boiling points. Key advantages are faster processing, ability to distill higher boiling point solvents without damage, and improved separation, yield, and purity. It finds applications in separating thermolabile substances and preparing extracts while preserving active constituents.
The document discusses azeotropic and steam distillation. It defines azeotropes as mixtures that have the same composition in both the liquid and vapor phases, preventing separation through simple distillation. There are two types: minimum boiling and maximum boiling azeotropes. Methods to separate azeotropes include pressure swing distillation, azeotropic distillation using an entrainer, and steam distillation for heat-sensitive compounds. Azeotropic distillation works by forming a new low-boiling azeotrope with the entrainer, then separating the components in a decanter. Steam distillation uses water vapor to carry compounds over at lower temperatures than simple distillation
This document discusses distillation, including definitions, applications, Raoult's law, and different types of distillation processes. It describes steam distillation and its setup for separating immiscible liquids like water and essential oils. Azeotropic distillation is explained where an entrainer is added to break or form an azeotrope allowing better separation. Various industrial and medical applications are presented along with diagrams of distillation equipment.
The document discusses unit operations in food processing. It defines a unit operation as a processing step where raw materials enter and a desired product exits. Important unit operations include heat transfer, drying, evaporation, separation processes, size reduction, mixing and shaping. Examples of specific unit operations used to produce many foods are provided, such as pasteurization, freezing, spray drying, centrifuging, grinding, blending and extrusion. The document focuses on freezing operations like plate, immersion, blast and fluidized bed freezing.
Distillation is a physical separation process that separates mixtures based on differences in boiling points. There are several types of distillation including simple distillation, fractional distillation, steam distillation, and vacuum distillation. Simple distillation is used when components differ in boiling point by at least 70°C while fractional distillation uses a fractionating column to separate components that have similar boiling points within 25°C. Steam distillation allows purification of heat sensitive compounds by boiling them at a lower temperature using steam.
The document discusses different drying techniques used in the pharmaceutical industry. It describes tray drying, fluidized bed drying, vacuum drying, and freeze drying. Tray drying involves circulating hot air over solid materials placed on trays to remove moisture. Fluidized bed drying suspends materials in a stream of hot air to dry them uniformly. Vacuum drying uses reduced pressure to lower the boiling point of water for faster evaporation. Freeze drying works by freezing materials, reducing pressure, and allowing ice to sublimate directly to water vapor for drying thermolabile substances. Each method has advantages like speed, uniformity, or suitability for certain materials as well as disadvantages like cost or potential for degradation.
Distillation is a process that separates mixtures into individual components based on differences in their boiling points. It works by heating the mixture to vaporize components with lower boiling points, which are then cooled and condensed.
The key principles are that vapor pressure increases with temperature, allowing the lower boiling components to vaporize first. According to Raoult's law, the vapor produced will be enriched in the more volatile components compared to the liquid mixture.
There are several types of distillation including simple, fractional, vacuum, and azeotropic distillation. Simple distillation is used when components have very different boiling points while fractional distillation with multiple stages is needed for similar boiling points. Vacuum distillation lowers the
Distillation is a process that separates mixtures into their component parts based on differences in their boiling points. It involves vaporizing a liquid mixture and condensing the vapor to obtain purified fractions. There are several types of distillation processes that can be used for applications like purification of organic solvents, separation of drugs and petroleum products, and recovery of volatile oils and solvents. Some key distillation techniques described in the document include simple distillation, fractional distillation, distillation under reduced pressure, steam distillation, and molecular distillation.
Full Distillation technique where you find about various terminologies, its principle in which raolt's law and henry's law, assembly, classification. Distillation apparatus with their principle, advantages and disadvantages and detailed abour steam distillation and azeotropic distillation.
A drum dryer consists of a horizontally mounted hollow steel drum that partially dips into a liquid feed pan. As the drum rotates, the liquid forms a thin film on the drum's external surface and dries within one rotation. A doctor's knife then scrapes off the dried material, which falls into a storage bin. Drum drying is suitable for heat-sensitive materials since the short contact time of 6-15 seconds limits exposure to heat. It efficiently transfers heat and moisture due to the large drying surface area of the thin liquid film on the drum. Common applications include drying solutions, slurries, and suspensions in industries such as food, chemicals, and pharmaceuticals.
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
This document discusses different types of distillation processes used to separate substances based on their boiling points. It describes simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. For each type, it explains the basic components and process, as well as common applications like purifying water, extracting essential oils, and separating organic solvent mixtures.
Distillation processes ,Types of Distillation, Types of WaterAshwini Shewale
This document discusses various distillation processes used to separate substances. It describes simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. It also discusses the preparation of purified water and water for injection by distillation. The key parts of a distillation apparatus are identified as the still, condenser, and receiver. Distillation takes advantage of differences in vapor pressures to separate substances based on their boiling points.
Drying is defined as the removal of water or other liquids from a material through the application of heat. It involves three steps: heat transfer to the material, mass transfer of moisture to the surface and evaporation, and transfer of vapor away from the material. There are several theories that describe the drying mechanism, including diffusion, capillarity, and pressure gradient theories. The drying rate curve shows an initial adjustment period, constant rate period, falling rate periods, and an equilibrium moisture content where drying stops. Factors like material properties, air conditions, and particle size influence the drying process and rate.
1) Drying curves plot drying rate versus remaining water content and can describe the drying process in steps with changing drying rates.
2) There is an initial constant rate period where unbound surface water is removed, followed by a falling rate period where the drying rate decreases as water moves internally through the material.
3) Drying rates determined experimentally can be used to calculate drying times to design drying equipment and operations. Simplified calculations can provide useful estimates by assuming constant temperature and humidity.
This document discusses different types of fluid flow and equations related to fluid flow. It contains the following key points:
1) Laminar flow occurs when layers of a fluid flow smoothly past one another, while turbulent flow involves irregular particle movement.
2) The continuity equation states that the rate of fluid entering a pipe must equal the rate leaving, so mass is conserved.
3) Bernoulli's equation relates pressure, velocity, and height of an incompressible fluid in static equilibrium, such that the total mechanical energy at each point remains constant as fluid flows.
This document contains lecture slides from Dr. M. Subas Chandra Bose and Mrs. Sabarunisha Begum on the topic of mass transfer operations. It discusses various mass transfer concepts like diffusion, gas absorption principles, and vapor-liquid operations including distillation. The slides provide definitions and examples of different mass transfer processes and operations. They also describe concepts like the transfer unit, differential distillation, flash distillation, and continuous rectification in binary systems.
Vacuum distillation allows purification of compounds that cannot be readily distilled under normal atmospheric pressure or that may decompose at high temperatures. It works by reducing pressure above the boiling liquid, lowering the boiling point so compounds evaporate and separate based on differences in their boiling points. Key advantages are faster processing, ability to distill higher boiling point solvents without damage, and improved separation, yield, and purity. It finds applications in separating thermolabile substances and preparing extracts while preserving active constituents.
The document discusses azeotropic and steam distillation. It defines azeotropes as mixtures that have the same composition in both the liquid and vapor phases, preventing separation through simple distillation. There are two types: minimum boiling and maximum boiling azeotropes. Methods to separate azeotropes include pressure swing distillation, azeotropic distillation using an entrainer, and steam distillation for heat-sensitive compounds. Azeotropic distillation works by forming a new low-boiling azeotrope with the entrainer, then separating the components in a decanter. Steam distillation uses water vapor to carry compounds over at lower temperatures than simple distillation
This document discusses distillation, including definitions, applications, Raoult's law, and different types of distillation processes. It describes steam distillation and its setup for separating immiscible liquids like water and essential oils. Azeotropic distillation is explained where an entrainer is added to break or form an azeotrope allowing better separation. Various industrial and medical applications are presented along with diagrams of distillation equipment.
The document discusses unit operations in food processing. It defines a unit operation as a processing step where raw materials enter and a desired product exits. Important unit operations include heat transfer, drying, evaporation, separation processes, size reduction, mixing and shaping. Examples of specific unit operations used to produce many foods are provided, such as pasteurization, freezing, spray drying, centrifuging, grinding, blending and extrusion. The document focuses on freezing operations like plate, immersion, blast and fluidized bed freezing.
Distillation is a physical separation process that separates mixtures based on differences in boiling points. There are several types of distillation including simple distillation, fractional distillation, steam distillation, and vacuum distillation. Simple distillation is used when components differ in boiling point by at least 70°C while fractional distillation uses a fractionating column to separate components that have similar boiling points within 25°C. Steam distillation allows purification of heat sensitive compounds by boiling them at a lower temperature using steam.
The document discusses different drying techniques used in the pharmaceutical industry. It describes tray drying, fluidized bed drying, vacuum drying, and freeze drying. Tray drying involves circulating hot air over solid materials placed on trays to remove moisture. Fluidized bed drying suspends materials in a stream of hot air to dry them uniformly. Vacuum drying uses reduced pressure to lower the boiling point of water for faster evaporation. Freeze drying works by freezing materials, reducing pressure, and allowing ice to sublimate directly to water vapor for drying thermolabile substances. Each method has advantages like speed, uniformity, or suitability for certain materials as well as disadvantages like cost or potential for degradation.
Distillation is a process that separates mixtures into individual components based on differences in their boiling points. It works by heating the mixture to vaporize components with lower boiling points, which are then cooled and condensed.
The key principles are that vapor pressure increases with temperature, allowing the lower boiling components to vaporize first. According to Raoult's law, the vapor produced will be enriched in the more volatile components compared to the liquid mixture.
There are several types of distillation including simple, fractional, vacuum, and azeotropic distillation. Simple distillation is used when components have very different boiling points while fractional distillation with multiple stages is needed for similar boiling points. Vacuum distillation lowers the
Distillation is a process that separates mixtures into their component parts based on differences in their boiling points. It involves vaporizing a liquid mixture and condensing the vapor to obtain purified fractions. There are several types of distillation processes that can be used for applications like purification of organic solvents, separation of drugs and petroleum products, and recovery of volatile oils and solvents. Some key distillation techniques described in the document include simple distillation, fractional distillation, distillation under reduced pressure, steam distillation, and molecular distillation.
Full Distillation technique where you find about various terminologies, its principle in which raolt's law and henry's law, assembly, classification. Distillation apparatus with their principle, advantages and disadvantages and detailed abour steam distillation and azeotropic distillation.
A drum dryer consists of a horizontally mounted hollow steel drum that partially dips into a liquid feed pan. As the drum rotates, the liquid forms a thin film on the drum's external surface and dries within one rotation. A doctor's knife then scrapes off the dried material, which falls into a storage bin. Drum drying is suitable for heat-sensitive materials since the short contact time of 6-15 seconds limits exposure to heat. It efficiently transfers heat and moisture due to the large drying surface area of the thin liquid film on the drum. Common applications include drying solutions, slurries, and suspensions in industries such as food, chemicals, and pharmaceuticals.
Agitation and Mixing are two important unit operations used in industries such as Impellers agitators are widely used to circulate the liquid through the vessel in which the dispersion of liquids and gases into other liquids like mixing of stiff paste, elastomers and dry solids powders takes place.
This document discusses different types of distillation processes used to separate substances based on their boiling points. It describes simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. For each type, it explains the basic components and process, as well as common applications like purifying water, extracting essential oils, and separating organic solvent mixtures.
Distillation processes ,Types of Distillation, Types of WaterAshwini Shewale
This document discusses various distillation processes used to separate substances. It describes simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. It also discusses the preparation of purified water and water for injection by distillation. The key parts of a distillation apparatus are identified as the still, condenser, and receiver. Distillation takes advantage of differences in vapor pressures to separate substances based on their boiling points.
Distillation, distillation process for pharma students, simple distillation, ...RajkumarKumawat11
Distillation, distillation process for pharma students, simple distillation, fractional distillation, distillation under reduced pressure, steam distillation, destructive distillation, water for injection and sterile water
Distillation is a process of separating mixtures by boiling and condensing their components with differing volatilities. It works by heating a liquid mixture to its boiling point, vaporizing components, and then condensing the vapor to liquid, allowing different components to separate. There are several types of distillation including simple distillation, fractional distillation, steam distillation, and vacuum distillation. Distillation is used in pharmacy to purify water and organic solvents, and prepare volatile oils, aromatic waters, and other official compounds.
This document discusses various types of distillation processes including simple distillation, fractional distillation, steam distillation, vacuum distillation, and vacuum still distillation. It provides definitions and explanations of the principles, apparatuses, and working processes for each type. Applications are also described for separating and purifying various substances using these distillation techniques.
Distillation is the process of converting liquid into its vapours by heating and reconverting it again into liquid by condensing the vapours.
The product obtained from the condensation of vapours is known as distillate or condensate.
Container which collects the distillate is known as receiver.
It results in essentially complete separation (nearly pure components).
It can be applied for two immiscible or non-reacting solid and liquid or liquid and liquid
Distillation is a process used to separate mixtures based on differences in their boiling points. It involves heating the mixture until it vaporizes, then cooling the vapors until they condense. There are several types of distillation processes. Simple distillation is used to purify liquids. Fractional distillation separates mixtures with components of different boiling points. Steam distillation is used for mixtures containing water. Vacuum distillation allows distillation of substances that decompose at their normal boiling points. Destructive distillation involves decomposition during heating.
The document discusses various distillation processes used in pharmacy including simple distillation, distillation under reduced pressure, fractional distillation, steam distillation, and destructive distillation. It then provides details on the preparation of purified water, water for injection, and sterile water for injection through distillation processes. Key points include:
- Distillation processes are used to separate substances based on differences in their vapor pressures.
- Simple distillation is used to prepare distilled water and water for injection by heating a liquid until it vaporizes and then condensing the vapor.
- Distillation under reduced pressure allows lower boiling points for thermolabile or high boiling point substances.
- Fractional distillation separates mis
Distillation is a process that separates mixtures into their component parts based on differences in their boiling points. It involves vaporizing a liquid mixture and condensing the vapor to obtain purified fractions. There are several types of distillation processes that can be used for applications like purification of organic solvents, separation of drugs and petroleum products, and recovery of volatile oils and solvents. Key distillation types discussed in the document include simple, fractional, steam, molecular, and falling film distillation. Each type has slightly different equipment setup and operating principles for achieving separation of mixtures.
This document discusses various distillation techniques used to separate liquid mixtures. It begins by defining distillation as a process that separates substances based on differences in their vapor pressures. It then describes several distillation methods including simple distillation, fractional distillation, steam distillation, and molecular distillation. For each method, it provides details on the operating principles, typical equipment setup, and common applications. The document serves to introduce various distillation unit operations and their uses in separating chemical substances.
Mechanism of Distillation,simple distillation steam &fractional distillation...M Swetha
Distillation is a technique used to separate liquids based on their boiling points. It involves heating a liquid mixture so that the more volatile components vaporize and pass into a condenser where they condense. Simple distillation can separate two liquids with a boiling point difference of at least 70°C, while fractional distillation uses a column with multiple plates to separate very similar boiling points. Vacuum distillation uses reduced pressure to lower the boiling point of components. Steam distillation is used for heat-sensitive materials and allows distillation at lower temperatures.
The document discusses various types of distillation processes and key concepts related to distillation. It defines distillation as a process that involves partial vaporization of a liquid mixture and subsequent condensation of the vapors to separate constituents. It describes several types of distillation including simple distillation, fractional distillation, vacuum distillation, molecular distillation, and azeotropic distillation. Key terms like volatility, relative volatility, vapor pressure, ideal solutions, and Raoult's law are also explained. Various equipment used in distillation like distillation still, condenser, receiver are discussed along with their working.
- Distillation is a process that separates mixtures based on differences in boiling points. It involves heating a liquid mixture to form vapors, condensing the vapors back to liquid, and collecting the purified liquid fractions.
- There are several types of distillation including simple, steam, fractional, and vacuum distillation which vary based on conditions and mixtures separated.
- A laboratory experiment demonstrates simple distillation to separate ethanol and water using common distillation equipment like a round bottom flask, condenser, and receiver flask. The mixture is heated to form vapors that condense and drip into the collection flask.
Fractional distillation is used to separate complex hydrocarbon mixtures like crude oil into fractions with similar boiling points. Vapors rise in a fractional distillation column and condense, becoming progressively more concentrated. Each tray contains liquid in equilibrium that vaporizes the lighter hydrocarbons, leaving heavier liquid below. Common fractions include methane, ethane, LPG, gasoline, kerosene, diesel and asphalt. Repeated fractional distillation results in fairly pure distillates used for fuel, waxes and industrial feedstocks.
The document discusses different types of distillation processes including simple distillation, fractional distillation, flash distillation, distillation under reduced pressure, and steam distillation. It defines distillation as a method of separation using selective vaporization and condensation. For each process, it covers the principles, equipment setup, working, advantages, disadvantages, and applications. The key principles discussed include Raoult's law, Dalton's law, and how distillation separates mixtures based on differences in boiling points.
The document discusses various physiochemical processes including precipitation, evaporation, exsiccation, desiccation, and efflorescence. It provides details on precipitation methods such as organic solvent, pH change, and double decomposition. It explains factors that affect evaporation like temperature, surface area, and atmospheric pressure. Exsiccation is the process of removing water of crystallization from hydrated substances by heating. Desiccation completely removes adhered moisture from substances. Efflorescence is the loss of water from hydrated substances into the atmosphere to reach equilibrium between the substance and surroundings.
This document provides information on distillation, including definitions, applications, terminology, and different types of distillation methods. It defines distillation as a process of separating components of a liquid mixture through vaporization and condensation. Some key applications mentioned include separation of volatile oils, purification of organic solvents and drugs, and refining of petroleum products. Various distillation assembly equipment and concepts such as the still, condenser, receiver, and Raoult's law are also described. Finally, different classifications of distillation methods like simple distillation, fractional distillation, and steam distillation are briefly outlined.
This document summarizes a chemistry laboratory experiment on simple distillation. The experiment aims to separate a mixture of two miscible liquids with a boiling point difference of at least 25°C. The procedure involves heating the liquid mixture in a round-bottom flask attached to a condenser. Vapors form and travel up the condenser where they cool and drip into a collection flask. The temperature is recorded at each stage of distillation. The results show the primary boiling point, final boiling point, amounts distilled and remaining, and percentage of distilled material.
Percolation is a method of extracting compounds from a crude drug material by continuously displacing a solvent through the material. There are different types of percolation including simple, modified, and reserved percolation. Continuous hot percolation, also known as Soxhlet extraction, uses a Soxhlet apparatus consisting of three main parts - a distillation flask to hold the solvent and extract, a thimble or drug holder, and a condenser. The apparatus allows for continuous treatment of a sample with a solvent over hours or days to extract compounds through a cyclic process of solvent saturation, drainage, and renewal.
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
This document discusses various terms and methods related to sterilization. It defines sterilization as making a substance free from all microorganisms, and discusses different related terms such as disinfection, antisepsis, and decontamination. It then describes various sterilization methods including thermal or heat methods using dry heat or moist heat, radiation, filtration, and gaseous methods. Specific sterilization tools and processes are explained, such as autoclaving, hot air ovens, and the use of ethylene oxide gas. The key advantages and disadvantages of different sterilization methods are also summarized.
The document defines filtration and clarification processes. It describes the basic components and process of filtration using a filter press. Key points include:
- Filtration separates solids from liquids using a porous medium, while clarification is used for very low solid concentrations below 1.0% w/v.
- A filter press uses alternating plates and frames with a filter medium to separate solids. Slurry enters the frames under pressure and the filtrate exits through outlets on the plates.
- Factors like particle properties, liquid properties, temperature, pressure difference, and filter media properties influence the filtration rate according to equations like Poiseuille's, Darcy's, and Kozeny-Carman
Thinking of getting a dog? Be aware that breeds like Pit Bulls, Rottweilers, and German Shepherds can be loyal and dangerous. Proper training and socialization are crucial to preventing aggressive behaviors. Ensure safety by understanding their needs and always supervising interactions. Stay safe, and enjoy your furry friends!
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
How to Build a Module in Odoo 17 Using the Scaffold MethodCeline George
Odoo provides an option for creating a module by using a single line command. By using this command the user can make a whole structure of a module. It is very easy for a beginner to make a module. There is no need to make each file manually. This slide will show how to create a module using the scaffold method.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
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A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
1. Smrutiranjan Dash (D, B & M-Pharma)
Page 1
Distillation is the process of converting liquid into its vapours by heating and reconverting it again into liquid
by converting the vapours.
It is a method of separating substances which differ in their vapour pressures.
The distillation process is carried out in an apparatus which consist of
a) Still, in which volatile material is boiled.
b) Condenser, in which vapour is condense.
c) Receiver, in which distilled is collected.
1) Simple distillation
2) Distillation under reduced pressure
3) Fractional distillation
4) Steam distillation ]
5) Destructive distillation
Simple distillation is a procedure by which two liquids with different boiling points can be separated.
It is a process of converting a liquid into its vapour in a distillation still, transferring the vapour to another
place and condensing it again into liquid.
It is co0nsist of a distillation flask with side arm slopping downward which is connected with a condenser.
The condensed vapours are collected in a flask called receiver.
The whole apparatus made of glass.
The distillation flask should be of such a size that it can contain half to two-thirds of the liquid to be distilled.
The thermometer is fitted in the distillation flask to note down the temperature, at which the vapours are
distilled.
Bumping is avoided by adding small piece of porcelain or porous pot before distillation.
2. Smrutiranjan Dash (D, B & M-Pharma)
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It is used for the preparation of distilled water and water for injection.
Many volatile o0il and aromatic waters are prepared.
Organic solvents ar3e purified by distillation.
Official compound such as spirit of nitrous ether and aromatic spirit of ammonia.
Concentration of liquid and to separate non-volatile solid form volatile liquids such as alcohol and eher.
Liquid boils when the vapour pressure is equal to the atmospheric pressure.
The boiling point of the liquid may be lowered to the desired temperature by reducing the pressure on its
surface.
It is consist of double neck distillation flask known as “claisen flask”.
In one of its neck a thermometer is fitted and the second neck the capillary is fitted which is prevents
bumping of the heated liquid.
The second capillary should be so fine as to permit only a slow steam of bubble which can be controlled with
a pinch of cock.
The thick walled glass apparatus with inter changeable standard glass joints are used for vacuumed
distillation.
The claisen flask is connected to a receiver through condenser.
Vacuum pump is attached to a receiver to attain the desired degree of vacuum.
Heating of claisen flask is not started until the desire vacuum has been attained.
It is used for the concentration of extracts containing thermolabile in order to prevent their destruction.
It is used for the separating substances which under goes decomposition when heated under normal
atmospheric pressure.
It is used for the obtaining a light porous mass on distillation of the liquid extract.
3. Smrutiranjan Dash (D, B & M-Pharma)
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Vacuum stills are employed for the distilling substances under reduce pressure on a large scale.
Vacuum still is generally made of stainless steel or any other metal which can withstand a high vacuum.
The still is connected to a condenser.
The vacuum is created by me3ans of a vacuum pump.
The vacuum still is fitted by attaching a pipe to a tap in the lower part of the hood and the pump is started.
The other end of the pipe dips into the liquid to be distilled so that it can be drawn into the still.
An observat6ion windo0w in the hood is very helpful to the operator to see the progress of distillation and
also the level of content of the liquid to be distilled.
Two receiver are3 generally attached to the condenser order to collect the distillate without stopping
distillation.
However, they may be used alternately by a suitable arrangement of the cocks.
Distillation of substances that have a high boiling point at atmospheric pressure.
Distillation of thermolabile substances that get damaged by a high temperature.
Removal of last trace of a volatile solvent.
When a substance dissolves in a liquid, the vapour pressure of the liquid is lowered.
When two miscible liquids are mixed together, each will act solute or solvent for the other.
So, when a mixture of two liquids is heated, the vapour pressure of each is lowered.
The pressure exerted by each liquid in the mixture is known as “partial pressure”.
The liquids boil when the sum of the partial pressures is equal to the atmospheric pressure.
The vapo0ur arising from two miscible liquids at boiling point is richer in the component exerting the greater
partial pressure.
4. Smrutiranjan Dash (D, B & M-Pharma)
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Fractionating column is fitted between the distillation flask and the condenser.
Fractionating column is used for the continuous separation of two miscible liquids.
Long fractionating column is used in the mixture where the boiling point is quite close to each other and
short fractionating column in those cases there is a considerable difference in the boiling point of the
mixture of miscible liquids.
In fractional distillation, the mixture of miscible liquids is heated in the still.
The vapour formed are allow to pass through the fractionating column, where the part of the vapour is
condensed and while returning to the still comes into a intimate contact with the rising vapour resulting in
further fractionation of the liquid being distilled.
The liquid having higher boiling point is condensed first and the vapour becomes richer with the liquid
having the lower boiling point which gets condensed in a condenser.
Alcohol is purified from the mixture of alcohol and water obtained from the fermentation tank.
It is used for the separation of miscible liquids, such as, alcohol and water, acetone and water, chloroform
and benzene.
When two immiscible liquids are heated together, then the mixture boils when the sum of the vapour
pressure equals to the atmospheric pressure.
The temperature at which mixture boils is lower than that of either of the liquids i.e. the boiling point of the
mixture is lower than that of the liquid with the lower boiling point.
The temperature at which the mixture boils remain stationary until on the liquids has been completely
removes from the still.
5. Smrutiranjan Dash (D, B & M-Pharma)
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It consists of a “steam can” fitted with a cork having two holes.
Through one of the holes passes a bend tube leading the steam to the flask containing the non-aqueous
liquid.
This tube should reach almost to the bottom of the flask.
Another long tube which passes through the other hole reaches almost to the bottom of the steam can.
This tube acts as a safety tube, so that in case the pressure inside the steam can becomes too much, it is
relieved by forcing water out of it.
Moreover, when the steam starts coming out from the safety tube, it indicates that the steam can is almost
empty.
The delivery tube carrying vapours from the flask is connected to the condenser to convert it into liquid
which gets collected in the receiver.
The non-aqueous liquid is placed in the flask.
A small amount of water is added to it.
The steam can add the flask is heated simultaneously, so that a uniform flow of steam passes through the
boiling mixture.
Distillation is continued until all the non-aqueous liquid has distilled over.
The distillate is then collected in Florentine receiver where oil is completely separated from water.
It is used for the preparation of volatile oil
It is used to determine the percentage of volatile oil in the drug.
It is used for the distillation of volatile oil for its purification without any decomposition.
It is used for the separation of oil and water. Florentine receivers are two types:
1) Used for the separation of oil heavier than water,
2) Used for the separation of oil lighter than water.
The receiver used for the oil heavier than water has two taps. The tap fitted near the bottom and vessel used
for the collecting oil, where as the tap fitted near the top of the vessel is used for water to overflow.
6. Smrutiranjan Dash (D, B & M-Pharma)
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The receivers used for the oil lighter than water is fitted with siphon at the bottom which works when it gets
fitted with water where as the tap fitted near the top is an outlet for the flow of oil.
This is also known as dry distillation.
The dried organic matter is heated in the absence of air, in a suitable apparatus, until all the volatile
substances are driven off and the residue is left behind.
The residue is subjected to carbonisation. (Carbonization is the conversion of organic matters like plants
and dead animal remains into carbon through destructive distillation).
Destructive distillation is mainly used in industry for obtaining many valuable products form wood and
coal.
Destructive distillation of wood gives acetone, menthol, cresol, wood tar etc. While charcoal remains in
the still.
Destructive distillation of the coal gives burning gases the ammonia, and the cock remains in the still.
Destructive distillation of animal b one gives ammonia, amines and hydrocarbons.
Water is free from volatile and non-volatile impurities are called as purified water.
It is prepared by distillation, ion exchange treatment, reverse osmosis or any other suitable process.
It contain no added substances and meets to get contaminated by micro-organisms, hence purified water is
not be used in the preparations meant for parenteral administration.
It should be stored in tightly closed containers.
Water is free from volatile and non-volatile impurities, micro-organisms and pyrogens are called “water for
injection”.
It is obtain by distilling potable water, purified water or distilled water from a natural glass or suitable metal
still fitted with an efficient device for preventing the water drops to go along water vapours into the
condenser.
The first portion of the distillate is rejected which contain volatile impurities.
7. Smrutiranjan Dash (D, B & M-Pharma)
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The reminder is collected in suitable containers, previously rinsed with distilled water and closed so as to
avoid contamination. It contains no added substances.
Water for injection must meet the purity requirements stated under purified water.
It need not be sterile but it should comply with the test for pyrogens.
Water for injection is stored in tightly-closed natural glass container.
It is water for injection which sterilised and suitably packed.
It contains no anti-microbial agent or other added substances.
It has PH between 4.5 to 7.5.
It must comply with the tests for sterility. It should also comply with the requirements of the tests for carbon
dioxide, chloride, sulphate, nitrates and nitrites, ammonium, calcium and heavy metals. It must comply with
the test for pyrogens.
Sterile water for injection should be stored in single dose containers not larger than of one litter.