生物炭去除水中四环素的研究进展

Removal of tetracycline from aqueous solution by biochars:A review

随着抗生素药物(如四环素)的大量使用,近几年抗生素的环境行为和毒性已经成为人们的研究焦点和热点.我国的地表水、地下水、市政污水、养殖废水等不同水体中都检测到了四环素等抗生素药物,引发的水生态问题受到了众多学者的广泛关注.生物炭因具有制备来源广泛且易得廉价、比表面积大、孔隙发达、官能团种类较多等优点被学者们重点关注,已有众多文献报道发现不同种生物炭对四环素的吸附具有优越的性能.本文综述了近年来不同生物质制备的生物炭对四环素的吸附影响以及不同水化条件对四环素对生物炭吸附特征的影响,并阐述了生物炭吸附四环素过程中所涉及的机理.对进一步探究生物炭对四环素吸附的影响具有一定的指导意义.

Currently, the environmental behavior and eco-toxicity of antibiotics have attracted great research attention with the extensive use of antibiotics(e.g., tetracycline). Tetracycline antibiotics have been ubiquitously found in various aqueous systems including surface water, groundwater, municipal sewage, and aquaculture wastewater. The ecological risks of antibiotics have attracted worldwide attention. In recent years, biochars have been widely used to remove tetracycline antibiotics from water, partly because of its easily available source, large specific surface area, pore structures, and different oxygen functional groups. Several literatures have reported that biochars demonstrated superior adsorption performance for tetracycline. In this paper, the adsorption behaviors of tetracycline onto biochars derived from different biomass, as well as effects of different solution chemistry on tetracycline adsorption onto biochars were reviewed. The mechanisms responsible for tetracycline adsorption by biochars were also discussed. Findings from this research highlight the significance of identifying and understanding the evaluation of the environmental risks of tetracycline. Meanwhile, the mechanism of tetracycline adsorption onto biochars should be further investigated.