摘要
In this work,an invasive plant(Aster subulatus Michx)mesopore laminar biochar loaded with transition metal Co(CoS@MLBC)was synthesized by a one-step hydrothermal carbonization way for activating peroxymonosulfate(PMS)to remove antibiotics in water.We characterized the structure and morphology of CoS@MLBC and tested its performance.The results showed that the carbon nitride structure was formed on CoS@MLBC,which improved its adsorption capacity for antibiotics and PMS.In addition,Co-doping significantly enhanced the PMS activity and efficiently degraded ciprofloxacin(CIP)over a wide pH range.It was identified that radical and non-radical synergistic action had a critical effect on the CIP degradation process.Furthermore,CoS@MLBC could completely remove CIP within 10 min and had a high removal efficiency(98%)after four cycles.Three possible pathways of the CIP degradation process with 12 intermediates were proposed and their ecotoxicity was analyzed.This work provides a new perspective for preparing biochar from invasive plants for the degradation of antibiotics in water,realizing the concept of“treating the wastes with wastes”.
出处
《Biochar》
CSCD
2024年第1期624-640,共17页
生物炭(英文)
基金
supported by the Major Science and Technology Project from the Ministry of Water Resources(SKS-2022069)
Science and Technology Program of Inner Mongolia Autonomous Region(2021GG0089)
Postdoctoral Innovative Talent Support Program of Chongqing,China,2020,and Natural Science Foundation of Chongqing,China(cstc2021jcyj-bshX0104 and cstc2021jcyj-msxmX0163)
National Natural Science Foundation of China(22306181).
