Preparation and application of biochar

Abstract

Biochar is a material with high carbon content formed by the pyrolysis of biomass at low temperature under anoxic or anaerobic conditions. It is the product of resource utilization of agricultural waste. The application of biochar to soil can improve the physical and chemical properties of soil and promote plant growth. It has the characteristics of porosity and high stability. It can reduce the bioavailability of organic pollutants and heavy metals in the environment. It could also slow climate change. At present, biochar is a very hot research topic. What the study want to explore is the differences of biochar obtained under different preparation conditions. Therefore,this study selected different types of biomass as raw materials and prepared biochar under different conditions. In this way, their different physicochemical properties were obtained.

This study explores the preparation process of biochar and the influencing factors on the product. It focuses on the role that biochar can play in the future life. First of all, biochar is an excellent soil conditioner. Historically, there have been many examples of soil improvement using biochar, but research has only recently begun. The effect of biochar on soil improvement depends on the nature of the soil. Second, biochar can play an important role in environmental protection because of its own adsorbability and other properties. It can be used as a carrier for pollutant transport. The adsorption capacity of biochar is also related to the properties of the adsorbed material. The adsorption capacity of biochar on organic matter and heavy metals is relatively better. The emission of carbon dioxide aggravates the greenhouse effect. The use of biological carbon sequestration can curb the greenhouse effect. Urban waste, agricultural waste and livestock waste are all difficult to deal with. This waste is treated and utilized through pyrolysis. Many complex problems can be accomplished using the production characteristics and characteristics of biochar. The biochar project has a very broad development prospect.