I think plant material of leguminosea family is good for biochar production
The criteria for the selection of biomass should be based on the application area. If we want to prepare the biochar for agricultural use, then agricultural residues and terrestrial weeds are good options because of their high ash content (inorganic content) that is required by the crop. For other purposes like water treatment, woody biomasses are the better option. We can easily prepare the biochar of surface area and avoid the leaching of inorganic contents during the sorption process as they have very less inorganic content.
In other words, the biomass with a high concentration of inorganic constituent is the better option for agricultural use, and the biomass has less ash content for water treatment and many other purposes.
It should be clean wood material. Low minerals and good wood cellular structure.
The salts of Ca, Mg, Na and potassium will form oxides and/or carbonates and that leaves the biochar with a very high neutralizing value.
You want the wood structure if activity properties are important. If the char is to be used to clean up water or hold pesticides and such. The char also needs to be charred close to 700 deg. C for the activity sites to form. Higher the voids collapse.
BUT for Ag use just over 450 deg, C is hot enough. I don't think the activity is much benefit when adding to soil - but I may be wrong as more research is being done. And if you can deal with the high pH from the oxides and carbonates then any biomass will work.
Waste vehicle tires processed by pyrolysis produces a high quality, high value carbon black mixed with original process ingredients
Hard wood biomass like Prosopis, cotton stalk had higher recovery (25-35%), porous(meso, micro) and surface area.
Plant material of the application areas which easily available for the Biochar production...
Noel Harasyn Thank u sir for raising concern to make biochar from vehicle tire
Efficient use of biomass like crop residues and other farm wastes by converting into a useful organic source of nutrients is one way to manage soil health and soil fertility otherwise they are being dumping as wastes materials in nature. Different crop residues like maize stover, grasses, cob rind, animal manure, areca husk, coconut husk and chips etc., could be used for biochar production. Maize biomass waste is the largest agricultural waste after timber and rice waste, conversion of this underutilized maize biomass wastes like corn cob into biochar helps to increase biomass potential use and to conserve the nutrients apart from effective crop residue management. Thus biochar has emerged as an important source of nutrients as that of manures and fertilizers to hold a key role in improvement of crop yield by providing favourable soil environment to crop.
Arunkumar B R Thank u sir for explaining about different agriculture waste can be converted in Gold as Biochar
Some authors suggested bamboo, rice, and corn/maize feedstocks are excellent biomass products. Hard bio materials are producing good quality biochar with high recovery percentage. Biochar produced with high pyrolysis temperature gives stronger level of recalcitrant carbon with lesser recovery of carbon and nutrients.
Tire pyroysis is a proven science but significant funding is required to do it professionally. The key is scale of operation and quality of bi char (carbon black mix).
Depending upon the application of biochar, best quality biochar varies and it can be obtained by optimizing various process parameters (synthesis conditions) such as temperature, time , heating rate, and types of feedstocks. For water applications biochar can be prepared at high temperature, time and lower heating rate and biomass with higher lignin content will produce high yield biochar. Furthermore, it can be applied to acidic soil to reclaimed it.
Basically depends on the area, location, and region. Nowadays rice residual burning is a big issue especially in Northern India, so rice residual (parali) is the best option for making the biochar for improving the soil fertility and maintain the soil health.
The parali is a good option for bio char because it's future need in location their we have residue burning problem mostly in northern India state Punjab, Haryana and Uttar Pradesh.
A priori, you cannot say if this or that material will be a good biochar if you do not your bibliographical research and especially define the objectives of this biochar.
There are many materials of natural origin that can be used
For excellent quality of biochar to be produced, the available feedstock should be high in carbon content example of such materials are coconut shells, coconut husks and bamboo.
Saw-dust and Crop residues.. It's also depend on the time, temperature and heating rate.
Hi Uma Nath Shukla ,
Biochar is meant to prepare the useful product from the waste residues of different sources like crops, agricultural industries or forestry.
It depends upon the use or purpose of preparing biochar.
If you want to use biochar for its varied applications then you can read some scientific literature.
e.g. 1. Effect of high and low rank char on soil quality and carbon sequestration. March 2013. Ecological Engineering 52:161 DOI:10.1016/j.ecoleng.2012.12.101
2. Bio-char from Aromatic plants waste and its Applications - A Green coal
Moreover, if you wish to work on biochar and want to prepare for research purpose then you can choose any waste biomass. I would suggested to go for the waste generated in higher amount and difficult to manage it.
I hope it will help.
Good luck
Thank you......................
The term Biochar refers to char prepared from biosources like many fields, so we have to choose our application accordingly, which depends on the carbonization and pyrolysis process, which includes the residence time and heating rate of the furnace and temperature. By controlling these parameters, we can obtain the biochar depending upon our priority, and also a high content of carbon should be there and less content of ash for the high quality of Biochar.
There is much literature available on biochar, so go through@