9 Biochar: its characteristics application and utilization of on environment

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There are a variety of organic waste feedstocks that may be used to make biochar, such as agricultural byproducts and municipal solid waste. Biochar’s distinctive properties, such as its high carbon content and cation exchange capacity, large specific outer area, and stable structure, have attracted increased interest. The purpose of this study was to offer an overview of biochar with a focus on its environmental application by methodically analyzing and summarizing research on its production, characterization, modification, and the utilization in this review. Based on the kind of feedstocks used, the Biochar’s physiochemical characteristics might vary greatly. A variety of processes are used to create biochar, including pyrolysis, gasification, and hydrothermal carbonization. Acidic, alkaline, oxidizing agent, carbonaceous materials, steam and gas purging may be used to alter biochar. The environment field of application influences the adoption of modification methods. Soil remediation and improvement, carbon sequestration, composting of organic solid waste, water and wastewater purification, catalyst and activator, electrode materials and electrode modification are all examples of applications for biochar. In order to get consistent results, additional research into the use of biochar in carbon sequestration is needed. Soil microorganisms and biochar should be studied further to determine the primary cause of increased soil fertility in various soils and feedstocks. When biochar is utilized for environment remediation, further consideration must be given to the release of heavy metals and PAHs from biochar into the environment. To further understand how biochar works as an activator for per sulfate, more research into the link between biochar structure and activation capabilities is needed. There are several environmental remediation applications for biochar, and greater research is needed to understand its mode of action.