Application Of Biochar Based Materials in Antibiotic Wastewater Treatment

In recent years, the annual use of antibiotics has reached tens of thousands of tons worldwide, and the environmental problems caused by the abuse of residual antibiotics have attracted more and more attention. If the residual antibiotic enters the water body directly without effective removal, it will not only pollute the water body and endanger aquatic organisms, but also lead to bacterial resistance and the transmission and diffusion of antibiotic resistance genes, seriously interfere with the ecosystem of natural bacteria, and form a new generation of resistant bacteria, thus seriously threatening human health and social stability.
The common treatment technologies for antibiotic wastewater removal include traditional biological treatment, physical and chemical treatment and advanced oxidation. In the use of these methods, the selection of materials is very important.
Biochar is a kind of stable porous carbon material made from biomass pyrolysis. As a low cost, simple and carbon rich porous material, biochar is well known for its strong environmental remediation capability. At present, biochar and its carbon based materials not only realize the rational resource utilization of waste, but also have both economic and environmental benefits, so they have attracted much attention of researchers.
Although biochar has strong environmental remediation capability, almost all the original biochar has limited functions and weak anti-interference ability, which limits its application in environmental pollution treatment. In order to overcome these shortcomings, many modification strategies have been proposed to improve the function of biochar, such as increasing specific surface area and pore volume, increasing functional groups, etc. Many new types of biochar based composites can be prepared by using different modification strategies to modify the surface of biochar.
The potential of biochar based materials to remove antibiotic wastewater through adsorption or catalysis has been well proven. In the future, its performance should be further studied to expand its practical application in engineering.