With the increasing popularity of water treatment plants in China,the output of excess sludge has increased rapidly,and it has attracted much attention in environmental pollution control because of its high harmfulness and difficult treatment.sludge-based biochar is a solid product made from sludge by pyrolysis.It has been widely used to remove various pollutants in environmental media because of its good adsorption and catalytic performance.In this paper,the research progresses on sludge-based biochar about the preparation methods,the influence of pyrolysis temperature on its physical and che...
