Biochar in Agriculture: A Soil Amendment for Sustainable Development

Biochar is a carbonaceous material produced by the high-temperature pyrolysis of biomass. Its unique characteristics make it an ideal choice for soil amendment, contributing to sustainable agricultural development. If the topic of biochar as a soil amendment in agriculture has aroused your curiosity, we invite you to explore it further.

Biochar in Agriculture
Biochar in Agriculture

Biochar’s Remarkable Attributes for Soil Amendment

Biochar possesses several key characteristics that make it suitable for use as a soil amendment. Here, we list some of the characteristics for your reference:

Rich pore structure

Biochar has a rich pore structure that provides it with a large specific surface area and excellent adsorption properties. The pore structure and specific surface area of biochar are mainly influenced by the type of biomass and the carbonization temperature and can be controlled and tailored through material selection and carbonization processes.

Carbonaceous structure

Biochar is primarily composed of carbon (C) elements. Its carbonaceous structure imparts stability and durability, allowing it to persist in soil for a long time and contribute to long-term soil quality improvement. Generally, the carbon content and mineral content in biochar tend to increase with higher carbonization temperatures.


Biochar is generally alkaline. This is very important for acidic soil amendment. Under normal circumstances, the more ash content in the raw material, the higher the carbonization temperature, and the longer the carbonization residence time, the higher the alkalinity of the biochar.

Pich Pore And Carbonaceous Structure - Biochar

Benefits of Biochar in Agriculture for Soil Amendment

Act as a carbon sink: Biochar can effectively immobilize a significant amount of carbonaceous material in the soil for the long term, thereby reducing carbon emissions into the atmosphere and contributing to climate change mitigation.
Increase nutrient retention & reduces leaching: Biochar has excellent adsorption capacity so that it can adsorb nutrient elements such as N, P and K and release them to plants when needed. This helps reduce nutrient loss and the usage of chemical fertilizers.
Improve soil structure: The porous structure of biochar can increase soil porosity and permeability. This can improve the air permeability of the soil, promote the reproduction and activity of beneficial microorganisms, and help the nutrient cycling of organic matter in the soil.
Promote soil remediation: Biochar can adsorb harmful substances such as heavy metal ions and pesticide residues, making it useful for the remediation of contaminated soils.
Increase water retention: The porous structure of biochar can increase soil porosity and permeability, improve soil’s drainage and water-holding capacity, and enhance soil’s drought resistance.
Act as a pH buffer: Alkaline biochar has the ability to regulate soil pH. It can neutralize acidic soils and create a more suitable environment for plant growth.

Benefits of Biochar in Agriculture for Soil Amendment

Who May Purchase Biochar for Soil Amendment

Biochar in agriculture for soil amendment can attract the purchase interest from these people.


Farmers are the groups that benefit most directly from the soil improvement effects of biochar. They are very concerned about soil quality and crop yield and quality. So they might use biochar in agriculture as a soil amendment.
Biochar For Farmers

Vegetable and fruit growers:

Due to the requirements of consumers for vegetables and fruit freshness, quality, safety, etc., vegetable and fruit growers usually have higher requirements for the quality of vegetables and fruit. In order to get high-quality vegetables and fruits, they may buy biochar to reduce fertilizer and pesticide use.
Biochar For Vegetable and Fruit Growers

Organic agriculture practitioners:

Organic agriculture pursues agricultural production methods that are free of chemical pesticides and fertilizers. So the relevant practitioners may purchase biochar for organic soil amendment.
Organic Agriculture Practitioners

Gardening enthusiasts:

They are concerned about plants’ growing environment and health. Therefore, they may buy biochar for soil amendment of outdoor gardens or indoor plants.
Biochar For Gardening Enthusiasts

Educational and research institutions:

They may purchase biochar to explore its effects on soil and plants for experiments, research projects, and teaching demonstrations.
Biochar For Educational and Research Institutions

Seed and farm tools suppliers:

They may supply biochar to farmers and growers as part of their product lines. So they might buy biochar to broaden their revenue stream.
Biochar For Seed and Farm Tools Suppliers

It is important to note that the purchase of biochar depends on the specific needs of an individual or organization and their knowledge of biochar’s effects.

Common Raw Materials Used to Make Biochar

Biochar can be produced from a range of biomass raw materials. Four major sources of raw materials are listed below.

Agriculture Waste
Agricultural waste: mainly crop residues, straws, fruit husks, and peel, such as wheat straw, reed straw, rice husks, peanut shell, coconut shell, walnut shell, bagasse, apple peel, and banana peel.
Forestry Waste
Forestry waste: mainly tree stumps, tree branches, leaves, barks, wood chips and sawdust, and other residues generated from forestry operations or timber processing.
Domestic Waste
Domestic waste: mainly organic waste after classification and treatment, such as food residue, spoiled fruits, and vegetables.
Sewage Sludge
Sewage sludge: mainly municipal sludge, river sludge, and industrial sludge that include organic matter, microorganisms, solid particles in wastewater, etc.

How Is Biochar Made?

The production process of biochar generally includes the following steps.

Raw material preparation and pretreatment: Select suitable biomass raw materials, such as wood, straw, plant residues, etc., according to their availability, cost, characteristics, and the application needs of the final biochar. Raw materials usually need to be dried, impurities removed, and crushed into appropriate particle sizes to improve pyrolysis efficiency.

Feeding: Load prepared biomass raw materials into the biochar machine. The feeding method can vary according to the specific equipment and production scale. Ensure the uniform distribution and appropriate filling density of raw materials to promote the pyrolysis reaction.

Heating and pyrolysis: Start the biochar machine and heat it to the desired pyrolysis temperature range (usually 300℃~800℃). In the high-temperature and low-oxygen furnace, volatile substances and gases of biomass raw materials will be released, and the solid residue left behind is biochar.

Collection and processing: After the pyrolysis reaction, wait for the reactor to cool to a safe temperature, and then collect biochar. According to customer requirements, the briquette making machine can transform biochar into different shapes.

It should be noted that the specific pyrolysis preparation process may vary depending on different equipment and processes. Therefore, in actual operation, it should be adjusted and optimized according to the specific situation and demand to obtain high-quality biochar.

Biochar Machine – To Make Biochar

Biochar production needs to be achieved by specialized biochar machines. The biochar production equipment can realize efficient and large-scale biochar production. This enables biochar to be widely used in agriculture and other industries. Below are some models of biochar machines produced by Beston Group. If you are interested, you can contact us directly to get more information.

BST-05 PRO Biochar Machine
BST-05 PRO Biochar Machine

BST-J-Series Biochar Machine
BST-J-Series Biochar Machine
BST-Series Biochar Machine
BST-Series Biochar Machine


    Please specify your requirements:

    1-What kind of solution will meet your demand? (Key point)

    2-What kind of material and expected end product are you planning to have? (Right solution begins from material and product)

    3-When is the project supposed to be running? (Key info for A-Z project programming)

    4-Budget for machinery purchasing? (Key info for right model)

    5-Points that you really focus on. (Customized service from our project consultant)