Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 30, Issue 10, Pages 27394-27408Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-022-24102-5
Keywords
Tetracycline; Biochar; Peroxymonosulfate; Advanced oxidation; Free radicals
Categories
Ask authors/readers for more resources
In this study, rice husk biochars doped with ferric chloride were used as catalysts for tetracycline degradation. The optimal conditions for catalytic performance were investigated, and stable results were obtained. The study provides a new pathway for the comprehensive utilization of rice husks.
Rice husk biochars (BCs) doped with ferric chloride were prepared by one-pot method, characterized by SEM, EDS, BET, XRD, and FTIR, and utilized to catalyze peroxymonosulfate (PMS) for tetracycline (TC) degradation. Various influencing factors in the BC/PMS/TC system were investigated, as well as the recycling performance of the optimal BC. The mechanism of BC activation of PMS and degradation of TC were analyzed based on the free radicals quenching experiment and the pathways of TC degradation. The results demonstrated that bBC3 was an excellent catalyst with large specific surface area; the amounts of oxidant and catalyst were important factors affecting the catalytic performance of PMS, while pH had less effect on TC degradation; 10 mM of chloride ions inhibited the TC degradation, while 20 mM promoted the TC degradation; other ions and humic acid inhibited the TC degradation at the set concentrations; activation of PMS by bBC3 yielded species with strong oxidative activity, which were primarily responsible for TC degradation. The bBC3 obtained stable performance for removing TC. This study provided a pathway for the deep utilization of waste rice husks besides an effective method for degrading TC.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available