This document discusses biochar - a carbon-rich product from biomass pyrolysis that can be applied to soils. It describes biochar's origins in ancient Amazonian soils, defines it, and outlines its characteristics and production methods. The key benefits of biochar for agriculture and climate change mitigation are improving soil fertility and crop yields, increasing carbon sequestration, and reducing greenhouse gas emissions from soils. Critical factors for maximizing biochar's benefits include the quality of feedstocks, pyrolysis temperature, soil properties, and application method.
Biochar is a product rich in carbon that comes from the pyrolysis of biomass, generally of vegetable origin. It is obtained by the decomposition of organic matter exposed to temperatures between 350-600°C in an atmosphere with low oxygen availability (pyrolysis), which can be slow, intermediate or fast. The objective of this review is to show how biochar (BC) can be obtained and its effects on the physicochemical properties of soils and physiological behavior of cultivated plants. However, most studies reported positive effects of biochar application on soil physical and chemical properties, soil microbial activities, plant biomass and yield, and potential reductions of soil GHG emissions. This review summarized the general findings of the impacts of biochar application on different aspects from soil physical, chemical, and microbial properties, to soil nutrient availabilities, plant growth, biomass production and yield, greenhouse gases (GHG) emissions, and soil carbon sequestration. The biochar applications in soil remediation in the past years were summarized and possible mechanisms were discussed. Finally, the potential risks of biochar application and the future research directions were analyzed to verify the mechanisms involved in biochar-soil-microbial-plant interactions for soil carbon sequestration and crop biomass and yield improvements.
Biochar is charcoal used as a soil amendment.
Biochar is a stable solid, rich in carbon, and can endure in soil for thousands of years.Like most charcoal, biochar is made from biomass via pyrolysis. Biochar is under investigation as an approach to carbon sequestration.Biochar thus has the potential to help mitigate climate change via carbon sequestration. Independently, biochar can increase soil fertility of acidic soils (low pH soils), increase agricultural productivity, and provide protection against some foliar and soil-borne diseases.
Biochar is a product rich in carbon that comes from the pyrolysis of biomass, generally of vegetable origin. It is obtained by the decomposition of organic matter exposed to temperatures between 350-600°C in an atmosphere with low oxygen availability (pyrolysis), which can be slow, intermediate or fast. The objective of this review is to show how biochar (BC) can be obtained and its effects on the physicochemical properties of soils and physiological behavior of cultivated plants. However, most studies reported positive effects of biochar application on soil physical and chemical properties, soil microbial activities, plant biomass and yield, and potential reductions of soil GHG emissions. This review summarized the general findings of the impacts of biochar application on different aspects from soil physical, chemical, and microbial properties, to soil nutrient availabilities, plant growth, biomass production and yield, greenhouse gases (GHG) emissions, and soil carbon sequestration. The biochar applications in soil remediation in the past years were summarized and possible mechanisms were discussed. Finally, the potential risks of biochar application and the future research directions were analyzed to verify the mechanisms involved in biochar-soil-microbial-plant interactions for soil carbon sequestration and crop biomass and yield improvements.
Biochar is charcoal used as a soil amendment.
Biochar is a stable solid, rich in carbon, and can endure in soil for thousands of years.Like most charcoal, biochar is made from biomass via pyrolysis. Biochar is under investigation as an approach to carbon sequestration.Biochar thus has the potential to help mitigate climate change via carbon sequestration. Independently, biochar can increase soil fertility of acidic soils (low pH soils), increase agricultural productivity, and provide protection against some foliar and soil-borne diseases.
Biochar for sustainable land management and climate change mitigationExternalEvents
This presentation was presented during the 3 Parallel session on Theme 2, Maintaining and/or increasing SOC stocks for climate change mitigation and adaptation and Land Degradation Neutrality, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Ms. Annette Cowie, from UNCCD – SPI - Australia, in FAO Hq, Rome
Biochar is fine-grained or granular charcoal made by heating vegetative biomass, bones, manure solids, or other plant-derived organic residues in an oxygen-free or oxygen-limited environment and used as a soil amendment for agricultur- al and environmental purposes.
It is a new word to describe fine-grained, highly porous charcoal made from biological material (biomass), high in organic carbon. This excludes fossil fuel products, geological carbon and industrial synthetics (plastics).
Biochar is pyrolysed feedstock under limited or no supply of O2 (Lehmann and Joseph, 2009)
This concept comes from-Terra Preta- ancient soils of the Amazon. (Glaser et al., 2001 and 2002; Lehmann, 2007).
Regarding Biochar and its applications and various products of Biochar used for soil quality enhancement, Biochar Market and global trend.
Feedstocks used for Biochar production. Biochar Production process.
Different byproducts of the Biochar production process are discussed. Biochar production is a Carbon NET ZERO process. Process of Biochar production, Pyrolysis is explained in the ppt. Different products which are produced by biochar producing companies specially with the purpose of soil quality enhancement is also discussed. Different byproducts of pyrolysis are also mentioned. Biochar market and its upward trend in coming years is discussed. Different feedstocks which can be utilized for the biochar production are added in slides. How biochar can be used for waste management and climate change mitigation is explained in the slides. Use of Biochar is explained in special context of Soil quality enhancement.
Energy production using Biochar is also explained. Biochar startups and their products are also explained. Biochar publications are also added in the slides.
CAN BIOCHAR AMENDMENTS IMPROVE SOIL QUALITY AND REDUCE CO2? A Climate Change ...Jenkins Macedo
ABSTRACT
Variations in rainfall, increased mean surface temperature, persistent drought, reduced soil moisture and nutrient, and crop failures have all been evidently linked to anthropogenic-induced climate change, which impacts food security. Agricultural soils can be used to reduce atmospheric CO2 by altering the physicochemical composition of soil organic matter through biochar soil amendments. This study draws on current literature published online, in peer review journal articles, books, and conference proceedings to assess the implications of biochar soil amendments to enhance soil quality, while reducing atmospheric CO2 concentration. Building on the critical analytical approach, biochar use as soil amendments have been tested to have promising environmental potential, which improves soil quality and quantity thereby enhancing soil moisture status and reduces atmospheric CO2. Analyses of biochar amended soils in terrestrial ecosystems reduces about 12% of the total Carbon (C) emitted through anthropogenic land use change. Biochar amended soil systems are dependable in tracing and quantifying sequestered C and can stay in the soil for thousands of years. The challenge with biochar as soil amendments is the type of biomass that can yield high quality biochar through the pyrolysis process.
Key words: Biochar, amendments, regenerative agriculture, food security, climate change, atmospheric CO2, pyrolysis, Carbon, soil moisture.
soil organic carbon- a key for sustainable soil quality under scenario of cli...Bornali Borah
The global soil resource is already showing a sign of serious degradation (Banwart et al. 2014) which has ultimately negative impact on sustained crop yield and environmental quality. Due to intense rainfall and concurrent rise in temperature with changing climate, the fertile top soil is prone to severe degradation with depletion of SOC. Most soils in agricultural ecosystems have lost soil C ranging from 30 to 60 t C ha-1 with the magnitude of 50 to 75% loss (Lal, 2004). Hence, restoration of soil quality through different carbon management options will enhance soil health, mitigate climate change and provide sustained agricultural production.
This presentation was presented during the Plenary 1, Opening Ceremony of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Luca Montanarella from EU Commission’s Joint Research Centre, in FAO Hq, Rome
Biochar for sustainable land management and climate change mitigationExternalEvents
This presentation was presented during the 3 Parallel session on Theme 2, Maintaining and/or increasing SOC stocks for climate change mitigation and adaptation and Land Degradation Neutrality, of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Ms. Annette Cowie, from UNCCD – SPI - Australia, in FAO Hq, Rome
Biochar is fine-grained or granular charcoal made by heating vegetative biomass, bones, manure solids, or other plant-derived organic residues in an oxygen-free or oxygen-limited environment and used as a soil amendment for agricultur- al and environmental purposes.
It is a new word to describe fine-grained, highly porous charcoal made from biological material (biomass), high in organic carbon. This excludes fossil fuel products, geological carbon and industrial synthetics (plastics).
Biochar is pyrolysed feedstock under limited or no supply of O2 (Lehmann and Joseph, 2009)
This concept comes from-Terra Preta- ancient soils of the Amazon. (Glaser et al., 2001 and 2002; Lehmann, 2007).
Regarding Biochar and its applications and various products of Biochar used for soil quality enhancement, Biochar Market and global trend.
Feedstocks used for Biochar production. Biochar Production process.
Different byproducts of the Biochar production process are discussed. Biochar production is a Carbon NET ZERO process. Process of Biochar production, Pyrolysis is explained in the ppt. Different products which are produced by biochar producing companies specially with the purpose of soil quality enhancement is also discussed. Different byproducts of pyrolysis are also mentioned. Biochar market and its upward trend in coming years is discussed. Different feedstocks which can be utilized for the biochar production are added in slides. How biochar can be used for waste management and climate change mitigation is explained in the slides. Use of Biochar is explained in special context of Soil quality enhancement.
Energy production using Biochar is also explained. Biochar startups and their products are also explained. Biochar publications are also added in the slides.
CAN BIOCHAR AMENDMENTS IMPROVE SOIL QUALITY AND REDUCE CO2? A Climate Change ...Jenkins Macedo
ABSTRACT
Variations in rainfall, increased mean surface temperature, persistent drought, reduced soil moisture and nutrient, and crop failures have all been evidently linked to anthropogenic-induced climate change, which impacts food security. Agricultural soils can be used to reduce atmospheric CO2 by altering the physicochemical composition of soil organic matter through biochar soil amendments. This study draws on current literature published online, in peer review journal articles, books, and conference proceedings to assess the implications of biochar soil amendments to enhance soil quality, while reducing atmospheric CO2 concentration. Building on the critical analytical approach, biochar use as soil amendments have been tested to have promising environmental potential, which improves soil quality and quantity thereby enhancing soil moisture status and reduces atmospheric CO2. Analyses of biochar amended soils in terrestrial ecosystems reduces about 12% of the total Carbon (C) emitted through anthropogenic land use change. Biochar amended soil systems are dependable in tracing and quantifying sequestered C and can stay in the soil for thousands of years. The challenge with biochar as soil amendments is the type of biomass that can yield high quality biochar through the pyrolysis process.
Key words: Biochar, amendments, regenerative agriculture, food security, climate change, atmospheric CO2, pyrolysis, Carbon, soil moisture.
soil organic carbon- a key for sustainable soil quality under scenario of cli...Bornali Borah
The global soil resource is already showing a sign of serious degradation (Banwart et al. 2014) which has ultimately negative impact on sustained crop yield and environmental quality. Due to intense rainfall and concurrent rise in temperature with changing climate, the fertile top soil is prone to severe degradation with depletion of SOC. Most soils in agricultural ecosystems have lost soil C ranging from 30 to 60 t C ha-1 with the magnitude of 50 to 75% loss (Lal, 2004). Hence, restoration of soil quality through different carbon management options will enhance soil health, mitigate climate change and provide sustained agricultural production.
This presentation was presented during the Plenary 1, Opening Ceremony of the Global Symposium on Soil Organic Carbon that took place in Rome 21-23 March 2017. The presentation was made by Mr. Luca Montanarella from EU Commission’s Joint Research Centre, in FAO Hq, Rome
Biocharcoal a new environmental technology to enhance agricultural produce and has environmental value. Do not pollute land as the chemical fertilizers do. A way to trap carbon.
Biochar is a boon for agricultural crops. Biochar is baked biomass that you can add to soil. It is a biomass that is thermally altered in the absence of oxygen, it is baked and not burned and flammable gasses are released (hydrogen, carbon dioxide). Heat transforms plant carbon (found in the cellulose and lignin) into fused aromatic carbon rings that are very stable. Biochar are made from different feedstocks at different physical and chemical properties. In carbon cycle almost all of the carbon returns to the air. Green plants remove carbon dioxide from the atmosphere via photosynthesis and convert it into biomass. Virtually all of that carbon is returned to the atmosphere when the plants die and decay, or immediately if the biomass is burned as a renewable substitute for the fossil fuels. While in the biochar cycle up to half of the carbon is sequestered, green plants removed and sequestered as biochar, while the other half is converted to renewable energy coproducts before being returned to the atmosphere. Biochar retains soil moisture of the agricultural field. Worms loves biochar, it works best when composted with other organic matter before adding to garden soil. This allows life to colonize the biochar. Biochar composted with animal manure, it is inoculated with compost tea. Biochar composted with food waste and bokashi (anaerobic lactobacillus fermentation). Other activities include minerals, NPK, fungi, worm castings, fish emulsion, urea, etc. biochar can be added to soils to improve fertility. Reduces emissions from the biomass. Improves the water quality and quantity. Helps to improve the agricultural productivity. Valuable resource reduces the forest fires. Value added product for urban and rural agriculture and forest communities.
To Improve the Calorific Value of Cotton Waste by Anaerobic Digestionijsrd.com
Ginning industries, spinning mills and other composite textiles industries produce a lot of cotton waste annually. This waste is rich in cellulose and solid contents with sufficient carbon to nitrogen ratios. However a lot of chemicals are already present in cotton waste at the end of various processes like dyeing, finishing, washing, etc. This reduces the fuel value of cotton by lowering down its calorific value. The calorific value (or energy value or heating value) of a substance, usually a fuel or food (see food energy), is the amount of heat released during the combustion of a specified amount of it. Improving the calorific value of cotton by anaerobic digestion is an environment friendly approach of converting waste to energy.
Carbon Farming, A Solution to Climate Change.pptxNaveen Prasath
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Research found that if emissions of heat-trapping carbon emissions aren’t reduced, average surface temperatures could increase by 3 to 10 degrees Fahrenheit by the end of the century.
CK Dotaniya =Role of Biofertilizers in Integrated Nutrient ManagementC. Dotaniya
Biochar is the carbon rich product obtained when biomass, such as wood, manure or leaves, is heated in a closed container with little or no available air.
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BIOCHAR: PREPARATION AND IT'S ROLE IN CLIMATE CHANGE MITIGATION
1. Presented by: PUJA SINHA
ID No.- 18230AGC031
Bsc.(Hons.),Agriculture
3rd year, 5th semester
Submitted to: Dr. ARDITH SANKAR
Assistant Professor
Dept. of Agronomy
IAS,B.H.U(R.G.S.C)
AGR-311: Practical Crop Production – I (Kharif Crops)
Topic – BIOCHAR : PREPARATION AND IT’S ROLE IN AGRICULTURE AND CLIMATE
CHANGE MITIGATION
2. CONTENTSC
CONTENTS
Origin of biochar
What is biochar?
Why biochar should be used?
Characteristics of biochar
Sources of feedstocks and process of biochar production
Methods of biochar production
Soil application of biochar
Effects of biochar incorporation in soil
Biochar for climate change mitigation
Critical factors for maximising the benefits of biochar
Implications of biochar use
Prospects
Conclusion
3. FROM WHERE DOES THE IDEA OF BIOCHAR COME?
Left – a nutrient-poor oxisol;
Right – an oxisol transformed into
fertile terra preta using biochar.
origin dates back to the pre-
Columbian era, when the ancient
Amerindian communities in the
Brazilian Amazon region first made
dark earth soils (Terra Preta de Índio
[black earth of the Indian]), also
known as terra preta, through slash-
and-char.
considered as the most fertile soil in
the world
Have high carbon content,
up to 150 g C/kg soil, compared to the
surrounding soils (20–30 g C/kg soil)
4. WHAT IS BIOCHAR?
Biochar is a fine-grained, carbon-rich, porous product remaining after plant
biomass has been subjected to thermo-chemical conversion process
(pyrolysis) at low temperatures (~350–600°C) in an environment with little or
no oxygen. (Amonette and Joseph, 2009).
Pyrolysis typically, gives three products: liquid (bio-oil); solid (biochar); and gas
(syngas)
Yield of each product depends on the pyrolysis process (slow, fast, and flash)
and conditions (ie, feedstock, temperature, pressure, time, heating, and rate)
Biochar is not a pure carbon, but rather mix of carbon (C approx 70%),
hydrogen (H), oxygen (O), nitrogen (N), sulphur (S) and ash in different
proporties.
(Masek, 2009).
5. Major constituents of biochar
MOISTURE:
-Can hold large amount of
moisture
ASH:
-Include metals and non
metals
-Depends on feedstock.
-Provide nutrients to plants
and increase soil pH
STABLE CARBON:
-Persistence is indicated by
ratio of Hydrogen to Organic
Carbon
-Makes biochar useful as
long-term climate change
mitigation strategy
UNSTABLE CARBON:
-Relatively rapidly
decomposed
-can influence crop nutrition
6. Agricultural profitability
Management of pollution and
eutrophication risk to
environment
Restoration of degraded land
Sequestration of carbon from
the atmosphere
Residue management
WHY BIOCHAR SHOULD BE USED?
8. PHYSICAL CHARACTERISTICS
Bulk density:
• Biochars: 0.06 – 0.7 g/cm3 (depends on feedstock sources and temperature)
• Eg:BD of rice and wheat straw biochar was lower than that of maize stover and
pearl millet stalk biochar.
Particle density:
• Grass biochars: 0.25-0.3 g/cm3
• Wood biochars: 0.47 to 0.6 g/cm3
• affects the ease of mobility and loss of biochar in wind and water.
Particle size:
• depends on feedstock and its pre-processing, production technique (screw
augers, rotating drums etc.) and temperature.
Micro and macro porosity:
• Pores can be classified as macro-, meso- and micro-pores, with different
relevance to physiochemical phenomena for biochar interactions with the
environment.
• Micropores are responsible for the high sorption capacity of most biochars.
They have also been shown to provide microhabitats for microorganisms.
9. Surface area:
• 120 sq.m/gm(400℃ and below) ; 460 sq.m/gm(600-900℃)
• Woody biochars: medium to high surface area.
• Ash biochars: low surface area
Hydrophobicity:
• caused by tars (aliphatic compounds) condensing on the biochar surface
during pyrolysis.
• affects the water uptake by biochar, and therefore water holding capacity of
biochar, and microbial interactions.
• Low temperature biochars are strongly hydrophobic, but longer pyrolysis time
or washing biochar can reduce hydrophobicity.
• As biochar reacts in soil, hydrophobicity may decrease.
Grindability:
• The Hardgrove grindability index (HGI) of raw wood, torrefied wood and
charcoal (woody biochar) as a function of the volatile matter content.
• low HGI --- poor grindability
• high HGI --- easily grindable.
10. CHEMICAL CHARACTERISTICS
pH and liming value:
• pH value: 8.2-13 (increases with ash content and pyrolysis temperature)
• Eg: pH of most woody biochars is around 6 at 350°C, increases to about 8 at
450°C, and continues to increases with temperatures above 450°.
• The liming value of biochars determines their capacity to lower soil acidity
expressed as calcium carbonate (CaCO3) equivalent.
Cation exchange capacity(CEC):
• Low temperature biochars usually have higher CEC, but high temperature
biochars can adsorb more nutrients and OM.
• Directly proportional to production temperature
Electrical conductivity(EC):
• Softwood biochars - 19-4mS/m;Hardwood biochars – upto 3 times.
• Corn stalks are around 200mS/m, poultry manure up to 500mS/m.
• Biochar added to soil can increase soil EC
Total carbon content and C/N ratio:
• vary from 33.0 to 82.4%.
• algae-based biochars have low C/N ratios and that wood (hard and soft)
feedstock biochars have the highest C/N ratios.
11. Macronutrient content:
• N and S compound tends to volatize at a temperature above 200 and
375°C, respectively, whereas, K and P volatilize between 700 and 800°C
• High-temperature biochars (800°C) have a higher extractable NO3-,
while low-temperature biochars (350°C) have greater amounts of
extractable P, NH4 +, and phenols
12. ELECTROCHEMICAL
CHARACTERISTICS
Most biochars are semiconductors and can store
electrons and give out electrons.
High temperature biochars (>600℃) are conductors
of electricity.
Some carbon in the biochar can react with oxygen
to produce CO2, H2O and electrons. These
electrons can be accepted by oxygen, Fe3+, nitrates
or some bacteria.
Thus biochar can assist in making nutrients more
available.
13. SOURCES OF FEEDSTOCKS AND PROCESS OF
BIOCHAR PRODUCTION :
FIG: Potential and concurrent sources of biochar production
14. SOME COMMON METHODS OF PREPARATION OF BIOCHAR
1) HEAP METHOD
a) Traditional earth kiln b) Holy mother biochar kiln
15. 2) DRUM METHOD:
Biochar preparation at IARI: Drum used for preparation of biochar (A); Drum filled with maize
stover (B); Drum covered with lid (C); Drum placed inside the firebrick kiln heating provide
at the base of drum externally (D); Biochar removed from drum (F); and
Biochar the final product with little percentage of ash (F)
A B C
D E F
17. BIOCHAR SOILAPPLICATION:
-Broadcasted
mechanically by
spreader or hand
-can be incorporated
through hand hoe,
drought animals or
by mechanical
ploughing and
discing
-Deep-banded
application in rows
-biochar is placed into
the rhizosphere
-applied in bands of
about 50mm to
100mm wide, with a
spacing of
approximately 200mm
to 600 mm and at a
suitable depth
-Incorporation with
composts and
manures
-The compost or
manure mixed with
biochar can be
applied by uniform
topsoil mixing or can
also be top-dressed
between rows of
trees and vines
without incorporation
-FIG.(left) Trenching
method to
incorporate biochar
and correct wilting of
a pine tree; (right)
addition of biochar to
holes around mature
orchard trees
a. METHODS OF APPLICATION
18. Application rate of biochar:
• 5-50 tonnes/hectare(in general)
Frequency of application:
• single application is sufficient for several growing season.
19. EFFECTs OF BIOCHAR INCORPORATION IN AGRICULTURAL SOIL:
Improved soil fertility and crop yields
Increased fertiliser use efficiency(10-30%)
Improved water retention(upto 18%), aeration and soil tilth
Higher CEC(upto 50%) and less nutrient runoff
Decreased methane(100%) and nitrous oxide(50%) emission from soil
Increases soil organic carbon
Can use wide variety of feedstocks including crop residues such as wheat and
corn straw, poultry litter, cow manure, forest debris, and other farm based
biomass resources
Reduce the acidity of soil by acting as liming agent
Reduced aluminium toxicity
Supports soil microbial life
TABLE:The impact of biochar on the three most common and most problematic soils:
Acrisols, Lithosols (Lixisols) and Nitosols.
22. A) CARBON SEQUESTRATION:
removal of atmospheric CO2 through photosynthesis to form organic matter, which is ultimately
stored in the soil as stable forms of C. The maximum sustainable technical potential for carbon
abatement from biochar is 1-1.8 giga ton (Gt) C per year by 2050.
biochar leads to sequestration of about 50% of the initial carbon compared to the low amounts
retained after burning (3%) and biological decomposition (less than 10-20% after 5-10 years)
CARBON CYCLE BIOCHAR CYCLE
23. B) MITIGATION OF GREENHOUSE GAS EMISSIONS:
FIG: Potential mechanisms of soil greenhouse gas (GHG) fluxes in response to biochar amendment.
The red line and blue line represent the positive and negative regulations, respectively.
Soil is a significant source of nitrous oxide (N2O) and both a source and sink of
methane (CH4). These gases are 23 and 298 times more potent than carbon
dioxide (CO2) as greenhouse gases in the atmosphere.
24. IMPLICATIONS OF BIOCHAR USE:
Economic implications
Environmental implications
Potential health issues
Dry biochar is liable to wind erosion
Response of local communities to adopt
Unavailability of farm labour, higher wage rates for collection and
processing of crop residue
Lack of appropriate farm machines for on-farm recycling of crop
residue and inadequate policy support/ incentives for crop residue
recycling
CRITICAL FACTORS FOR MAXIMISING BENEFITS FROM BIOCHAR:
Quality of feedstock biomass
Optimum temperature for biomass production
Soil carbon level
Soil types and soil moisture
Soil pH and soil contamination
25. PROSPECTS:
As a soil additive for soil remediation
Soil substrates – Highly adsorbing and effective for in cleaning wastewater; in
particular urban wastewater contaminated by heavy metals.
A barrier preventing pesticides getting into surface water – berms around fields
Treating pond and lake water – bio-char is good for adsorbing pesticides and
fertilizers, as well as for improving water aeration.
In Japan and China bamboo-based bio-chars are being woven into textiles to
gain better thermal and breathing properties and to reduce the development of
odours through sweat. The same aim is pursued through the inclusion of bio-
char in shoe soles and socks
It is potentially applicable as the reactive medium for groundwater remediation
It serves as a good platform for doping and immobilizing nanomaterials
the petrochemical sector – as it is obliged to secure sustainable C-based
feedstocks in the face of dwindling fossil fuel reserves
the agricultural residues and by-products sector – as land scarcity stimulates
the need to optimize the sustainable values of these materials
26. CONCLUSION
Store recalcitrant form of carbon in soil
Crop residue management
Reduce GHGs emission
Carbon sequestration by photosynthesis
Improve soil physical and chemical properties
Overcome wastelands by reclaimation of soil
Improve soil fertility and crop yields
Increase fertliser use efficiency
Can produce electricty, bio-oils, and/or hydrogen fuels
Lack of awareness and inadequate policy support
Potential health issues like pneumoconiosis and silicosis
Involves large biomass demand for production
Need to investigate and utilise it to reduce our emissions and sustain
soils, but we cannot rely on it for solving our emerging problems
27. REFRENCES:
Use of Biochar for Soil Health Enhancement and Greenhouse Gas Mitigation in
India:Potential and Constraints - Ch. Srinivasarao, K.A. Gopinath, G. Venkatesh, A.K.
Dubey, Harsha Wakudkar,T.J. Purakayastha, H. Pathak, Pramod Jha, B.L. Lakaria, D.J.
Rajkhowa, Sandip Mandal, S. Jeyaraman, B. Venkateswarlu and A.K. Sikka (BIOCHAR
BULLETIN BY CRIDA)
Biochar Production and its Use in Rainfed Agriculture: Experiences from CRIDA - G
Venkatesh, K A Gopinath, K Sammi Reddy, B Sanjeeva Reddy, J V N S Prasad, G
Rajeshwar Rao, G Pratibha, Ch Srinivasarao, G Ravindra Chary,M Prabhakar, V Visha
Kumari, Arun K Shankar and B Venkateswarlu(CRIDA-NICRA Research Bulletin
02/2018)
Biochar: Production, Characterization, and Applications, edited by Yong Sik Ok, Sophie M.
Uchimiya, Scott X. Chang, Nanthi Bolan
Biochar for Environmental Management Science and Technology, Edited by Johannes
Lehmann and Stephen Joseph
BIOCHAR APPLICATION ESSENTIAL SOIL MICROBIAL ECOLOGY ,Edited by
T. Komang Ralebitso-Senior, Caroline H. Orr
28. Guidelines on Practical Aspects of Biochar Application to Field Soil in Various Soil
Management Systems - Julie Major , PhD, Extension Director (International
Biochar Initiative)
https://www.bioenergyconsult.com/applications-of-biochar/
http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-
548X2020000200327
https://www.researchgate.net/figure/Comparison-of-normal-and-biochar-carbon-cycles-
Lehmann-2007_fig6_277667665
https://onlinelibrary.wiley.com/doi/full/10.1111/gcbb.12376
https://biochar.international/guides/properties-fresh-aged-biochar/
https://warmheartworldwide.org/putting-biochar-to-use-at-the-edge-quality-soils-and-
measurement/