Research Progress of Biochar and Pollution Control

Abstract

In recent years, due to the impact of climate change caused by the emission of greenhouse gases such as carbon dioxide, nitrous oxide and methane, scientists have begun to pay attention to the use of biochar, because it helps to capture and remove greenhouse gases in the atmosphere by means of biochar storage, converting it into a very stable form and storing it in the soil for thousands of years. This paper focuses on the hazards of organic pollutants, the treatment of pollutants by biochar and the benefits of environmental remediation. Biochar is the product of biomass energy raw material after pyrolysis, and its main component is carbon molecule. In terms of pollution treatment, biochar has a strong adsorption capacity for organic pollutants such as phenol, and can also improve soil heavy metal pollution by increasing soil cation exchange capacity (CEC) and PH. In addition, biochar is also used in low-temperature NH3-SCR denitrification catalysts to deal with nitrogen oxides in atmospheric pollutants and other aspects. Biochar is easy to ignite, non-polluting, smokeless and tasteless, less residue after combustion, light weight and high calorific value, the use of performance is better than most similar materials, known as the main force of human new energy and future fuel. The purpose of this paper is to provide the basis and reference for the development of biochar basic science and application technology.