摘要
该研究利用氢氧化钾和枯木一步法合成具有高活性的生物炭。由于氢氧化钾的加入,生物炭表面具有丰富的孔结构,促进了双酚A在其表面的吸附。利用该多孔生物炭活化过一硫酸盐(PMS)降解水中的双酚A(BPA)。其中性能最佳的生物炭样品由于出色的吸附和活化PMS性能,在1 h内,可将初始浓度为20 mg/L的BPA完全降解。条件实验证实该生物炭在酸性和中性环境中具有较高的催化活性;反应过程中主要依赖的活性自由基为·OH和SO4·-。除此之外,生物炭还具有较高的催化稳定性,再生之后催化活性无明显降低。
In this paper,we report a high-active biochar(ACW-X)synthesized by one-step method using potassium hydroxide and wood.Rich pore structures on the surface of biochar was created by potassium hydroxide etching,which promoted the adsorption of bisphenol A.This series of biochar was applied to activate peroxymonosulfate(PMS)to degrade bisphenol A(BPA)in water.ACW-15 could degrade BPA(20 mg/L)in 1 h through PMS activation,which demonstrated the excellent activity of ACW-15.ACW-X showed superior catalytic performance under acidic and neutral conditions.The active radicals mainly involved in the reaction were·OH and SO4·-,of which SO4·-played a decisive role.In addition,ACW-15 also showed high catalytic stability,and the catalytic activity only reduced a bit after regeneration.
作者
王雅琪
张龙强
WANG Yaqi;ZHANG Longqiang(Xuzhou Senior School,Xuzhou 221003,China;Jiangsu Rainfine Environmental Science and Technology Co.,Ltd,Nanjing 210009,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2019年第S02期52-55,共4页
Environmental Science & Technology
关键词
碱刻蚀生物炭
过硫酸盐活化
双酚A
alkali etching biochar
peroxymonosulfate activation
bisphenol A
