Methyl orange
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This presentation summarizes three acid-base indicators: phenolphthalein, methyl orange, and litmus paper. Phenolphthalein is composed of 3,3-bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one. Methyl orange has the structure of Sodium 4-[(4-dimethylamino)phenyldiazenyl]benzenesulfonate. Litmus paper contains 7-hydroxyphenoxazone. Samples of each indicator are also displayed.
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5th rmutcon2014-5 er011
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Synthesis of polymer supported nanoscale zerovalent iron and its
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This document presents a study on using xanthogenated-modified chitosan microbeads (XMCM) to remove methylene blue dye from wastewater. The study characterized XMCM using FTIR, pH, and pHzpc analysis. Batch experiments examined the effect of adsorbent dosage and initial pH on dye removal efficiency. Equilibrium isotherm data fitted well to the Langmuir model, indicating monolayer adsorption. The maximum adsorption capacity of XMCM for methylene blue was determined to be 21.62 mg/g. The study demonstrated the potential of XMCM for wastewater treatment applications.
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This document provides a literature review on using low-cost adsorbents for dye removal from wastewater. It discusses various adsorbents that have been used such as sugarcane bagasse, sawdust, coconut coir pith, and clay. The review examines factors that affect dye adsorption such as pH, adsorbent dosage, and contact time. It also discusses commonly used isotherm models like Langmuir and Freundlich to analyze adsorption equilibrium. The review concludes that more research is needed to develop efficient, selective, and eco-friendly low-cost adsorbents as well as continuous processes and desorption methods.
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This document discusses the use of bagasse as an adsorbent for removing dyes from wastewater. It provides background on dyes, their usage, and the issues they cause when discharged in wastewater. The document examines using raw and chemically activated bagasse to adsorb the dye methylene blue. It explores the adsorption process and how parameters like pH, contact time, adsorbent dose, and dye concentration affect adsorption. The results found chemically activated bagasse was more effective at lower pH levels, and equilibrium was reached within 45 minutes with optimal removal achieved using 12g/L of the chemically activated bagasse.
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Dye effluents impose hazardous effects on human beings as well as on environment. The present powerpoint deals with some of the decolourization techniques that can be adopted for treating wastewater containing toxic dyes and chemicals
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This document discusses various types of dyes used for different textile fibers, including their classification, application methods, and suitability. It covers direct dyes for cellulosic fibers, azoic dyes which form insoluble colors within fibers, vat dyes which require chemical treatment, sulphur dyes for dark shades, and reactive and acid dyes for protein fibers like wool and silk. Each dye class has different properties in terms of color range, fastness, ease of use, and fiber compatibility. The appropriate dye must be selected based on the fiber and desired color and performance characteristics.
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Synthesis of polymer supported nanoscale zerovalent iron and its
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adsorption of methylene blue onto xanthogenated modified chitosan microbeads
adsorption of methylene blue onto xanthogenated modified chitosan microbeads
Dye removal from waste water by using low cost adsorbent: A review
Dye removal from waste water by using low cost adsorbent: A review
Dye removal by adsorption on waste biomass - sugarcane bagasse
Dye removal by adsorption on waste biomass - sugarcane bagasse
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- 2. Submitted by: HASEENA. A PHYSICAL SCIENCE REGISTER NUMBER:1821434008 SUBMITTEDTO: SMITHA MISS FMTC MYLAPURE
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