Preparation and Modification of Biochar Materials and their Application in Soil Remediation

• Published in: Applied sciences Vol. 9; no. 7; p. 1365
• Main Authors: Yang, Xue, Zhang, Shiqiu, Ju, Meiting, Liu, Le
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.04.2019
• Subjects: Adsorption; Agricultural production; Agricultural wastes; Animal wastes; Bioavailability; biochar preparation; Bioremediation; Charcoal; Crop yield; Environmental effects; Environmental factors; Forestry; Forestry wastes; Functional groups; Greenhouse effect; Greenhouse gases; Heavy metals; Ion exchange; Livestock; Long-term effects; Pesticides; Pig manure; Pollutants; Polycyclic aromatic hydrocarbons; Porosity; Pyrolysis; Raw materials; Remediation; Repair; Rice; Risk assessment; Sodium hydroxide; Soil contamination; Soil improvement; Soil pollution; Soil properties; Soil quality; Soil remediation; Specific surface; Straw; Surface area; Swine; Temperature; China
• ISSN: 2076-3417; 2076-3417
• DOI: 10.3390/app9071365

As a new functional material, biochar was usually prepared from biomass and solid wastes such as agricultural and forestry waste, sludge, livestock, and poultry manure. The wide application of biochar is due to its abilities to remove pollutants, remediate contaminated soil, and reduce greenhouse gas emissions. In this paper, the influence of preparation methods, process parameters, and modification methods on the physicochemical properties of biochar were discussed, as well as the mechanisms of biochar in the remediation of soil pollution. The biochar applications in soil remediation in the past years were summarized, such as the removal of heavy metals and persistent organic pollutants (POPs), and the improvement of soil quality. Finally, the potential risks of biochar application and the future research directions were analyzed.