Soil pollution can be caused by various forms of industrial activity, use of agrochemicals or improper waste disposal. The greatest concern associated with soil contamination is the harm it may cause to human health. Direct contact with contaminated soil, vapors from pollutants, and even secondary contamination of water supplies pose significant health risks. Today, biochar has proven to be an effective method for decontaminating and revitalizing soil.
Introduction of the Featurers of Biochar
Biochar refers to a kind of charcoal-containing, which is a stable and highly aromatized solid substance obtained by pyrolysis in biomass. These basic properties make biochar have good adsorption characteristics and stability. Many customers also produce biochar for agricultural and forestry soils.
The use of biochar is a win-win strategy. Because this process can reduce agricultural and forestry pollution waste, and the product can also benefit the soil. Common raw materials used to make biochar are:
- Waste biomass: rice husk, sawdust, wood, coconut shell, palm shell, bamboo, sugarcane bagasse, jute stick, peanut husk…
- Sewage sludge: municipal sludge, pipe network sludge, river and lake sludge, industrial sludge…
- Other wastes: municipal domestic waste, medical waste…
Applications of Biochar for Soil Improvement
According to reports, acidic soil accounts for three-tenths of the world’s arable area. Under acidic conditions, the growth and yield of crops will be affected. While biochar is mostly alkaline. Applying biochar to soil can improve acidic soil and increase soil pH value. Reducing toxicity has a significant effect. At the same time, biochar can improve the physical structure of the soil and affect the activity of soil microorganisms. Using biochar can reduce the loss of nutrient elements and regulate the cycle of nutrient elements.
Biochar can increase the specific surface area of the soil, effectively reduce the bulk density and density of the soil, increase the total porosity, capillary porosity and ventilation porosity of the soil, effectively maintain the water in the soil, and thus promote the plants to absorb water more fully , to reduce water loss, etc.
The application of biochar can significantly increase the accumulation of soil organic carbon, increase the oxidation stability of soil organic carbon, and reduce soil water-soluble organic carbon. Adding biochar is beneficial to the accumulation and formation of soil organic matter, which is of great significance to improving soil fertility and stabilizing soil organic carbon pool.
Biochar is rich in organic macromolecules and void structures, and it is easier to form large aggregates after being applied to the soil, so it can enhance the adsorption and retention of nutrient ions by the soil, making it difficult to lose with water washing.
Biochar has a large specific surface area and microporous structure, which can adsorb heavy metals and organic pollutants, and reduce the bioavailability and environmental risks of pollutants. The biomass after carbonization reduces the bioavailability of soil heavy metals and improves the quality of crops.
Beston Solution for Making Biochar for Soil Remediation and Improvement
Beston Group has been committed to helping global customers find the perfect waste recycling solutions. For customers who want to improve soil in the field of biochar, Beston provides market analysis, technical guidance, biochar equipment, production and delivery, after-sales installation and commissioning, etc. Each program manager has rich experience and professional knowledge.