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Biochar under a microscope, Brownsort, UK Biochar Research Centre. From: http://www.nakanoassociates. com/biochar/
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Recently biochar gained importance as a way to deal with global climate change, by sequestering C into soils, but also as a soil amendment and bioremediation tool. Many studies have demonstrated the positive influence of biochar on soil quality and subsequently, plant growth, although the results are not consistent and climate seems to be the main...
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... forms of Cu, Ni, Zn, Cd and Pb, as well as the risk of leaching of Cu, Zn, Ni and Cd. Freddo et al. (2012) reported that the concentrations of metals, metalloids and PAH in four plant-based biochars (rice straw, bamboo, redwood and maize) were lower than those reported as acceptable for sewage sludge and compost. Biochar has high total porosity (Fig. 1) therefore it can retain water in small pores and increase soil water holding capacity (Asai et al., 2009). This may enhance water availability to crops and prevent form erosion. Some authors suggest that it can be an important tool to manage water in agricultural production, particularly under water stress conditions. For example, ...
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Citations
... By altering the chemical and structural makeup of soil, biochar has a substantial impact on soil quality. It can be applied to bioremediation and water stress management, especially in the recovery of soils contaminated with heavy metals and PAHs [15]. An increasing amount of research is demonstrating the beneficial effects of biochar on plant growth and development; nevertheless, the type of soil and climate have a significant influence on these effects. ...
Bhawariya A, Gayathri PM, Sunda SL. Comprehensive review on utilization of biochar in agriculture. AGBIR.2024;40(1):817-821. A solid, black, C-rich byproduct of the pyrolysis of biomass is called biochar. Biochar has long been recognized as a soil C sequester, but it has also recently been promoted for use in agricultural applications to improve soil quality; for this reason, its agronomic value is assessed. One of the main effects of intensifying agriculture is that ecosystem carbon reserves are reduced as a result of the release of carbon (C) into the atmosphere as carbon dioxide (CO 2). Ten to twelve percent of the world's anthropogenic greenhouse gas emissions come from agriculture. Reducing greenhouse gas emissions is necessary to address the difficulties posed by climate change. The process of pyrolysis, which turns biomass into biochar and stabilizes the carbon (C), is used to reduce elevated amounts of CO 2 in the atmosphere. The process of pyrolysis, which turns biomass into biochar, reduces atmospheric CO 2 levels by stabilizing the carbon (C) that is subsequently added to soil. Biochar has a high carbon content that can be difficult for it to break down, which means that it could stabilize carbon sequestration. While some research indicated that adding sulfur to mercury-polluted soil decreased the amount of mercury (Hg) that plants absorbed, other studies found that lowering the pH increased the solubility of heavy metals. As a result, the impact of sulfur on the availability of heavy metals in the soil is unclear and requires further investigation. Numerous recent research has demonstrated the effectiveness of biochar in lowering the uptake of heavy metals by plants.
... By altering the chemical and structural makeup of soil, biochar has a substantial impact on soil quality. It can be applied to bioremediation and water stress management, especially in the recovery of soils contaminated with heavy metals and PAHs [15]. An increasing amount of research is demonstrating the beneficial effects of biochar on plant growth and development; nevertheless, the type of soil and climate have a significant influence on these effects. ...
Bhawariya A, Gayathri PM, Sunda SL. Comprehensive review on utilization of biochar in agriculture. AGBIR.2024;40(1):817-821. A solid, black, C-rich byproduct of the pyrolysis of biomass is called biochar. Biochar has long been recognized as a soil C sequester, but it has also recently been promoted for use in agricultural applications to improve soil quality; for this reason, its agronomic value is assessed. One of the main effects of intensifying agriculture is that ecosystem carbon reserves are reduced as a result of the release of carbon (C) into the atmosphere as carbon dioxide (CO 2). Ten to twelve percent of the world's anthropogenic greenhouse gas emissions come from agriculture. Reducing greenhouse gas emissions is necessary to address the difficulties posed by climate change. The process of pyrolysis, which turns biomass into biochar and stabilizes the carbon (C), is used to reduce elevated amounts of CO 2 in the atmosphere. The process of pyrolysis, which turns biomass into biochar, reduces atmospheric CO 2 levels by stabilizing the carbon (C) that is subsequently added to soil. Biochar has a high carbon content that can be difficult for it to break down, which means that it could stabilize carbon sequestration. While some research indicated that adding sulfur to mercury-polluted soil decreased the amount of mercury (Hg) that plants absorbed, other studies found that lowering the pH increased the solubility of heavy metals. As a result, the impact of sulfur on the availability of heavy metals in the soil is unclear and requires further investigation. Numerous recent research has demonstrated the effectiveness of biochar in lowering the uptake of heavy metals by plants.
