碳酸钠联合过硫酸氢盐降解水中双酚S  

Degradation of Bisphenol S in Water by Peroxymonosulfate Coupled with Sodium Carbonate

作　　者：吴乐良 陈雅冰 晏彩霞[1] 张艺民 聂明华[1,2] WU Leliang;CHEN Yabing;YAN Caixia;ZHANG Yimin;NIE Minghua(Key Laboratory of Poyang Lake Wetland and Watershed Research,Ministry of Education,School of Geography and Environment,Jiangxi Normal University,Nanchang 330022,China;Key Laboratory of Eco-geochemistry,Ministry of Natural Resources,Beijing 100037,China)

机构地区：[1]江西师范大学地理与环境学院鄱阳湖湿地与流域研究教育部重点实验室,江西南昌330022 [2]自然资源部生态地球化学重点实验室,北京100037

出　　处：《环境科学与技术》2021年第12期120-128,共9页Environmental Science & Technology

基　　金：国家自然科学基金项目(42067034,42067058);江西省主要学科学术和技术带头人培养计划(20212BCJL23058);江西省自然科学基金(20202BA B203014,20202BAB203015);自然部生态地球化学重点实验室开放基金(ZSDHJJ202004)。

摘　　要：文章采用碳酸钠(Na_(2)CO_(3))联合过硫酸氢钾(PMS)体系用于降解水中双酚S(BPS)。结果表明,较低浓度的Na_(2)CO_(3)(1 mmol/L)可以有效联合PMS高效地降解BPS,反应后的溶液p H能满足直排要求。随着Na_(2)CO_(3)浓度和PMS浓度的增加,BPS的降解都呈现出先增加后降低的趋势。淬灭试验表明单线态氧(^(1)O_(2))和超氧自由基(O_(2)·-)都参与了降解过程,其中^(1)O_(2)是反应体系中的主要活性物种。提高反应温度能够促进BPS的降解,并加快反应速率。BPS在较宽溶液初始p H值范围(4.72~10.75)内的都具有较好的降解效果。体系中共存的Cl-和腐殖酸对BPS降解有促进作用,SO_(4)^(2-)和NO_(3)^(1)基本不影响BPS的降解。同时,检测鉴定出了4种降解产物,并推测出3条BPS可能的降解途径。在多种实际水体中,BPS能降解69%以上。该体系可以高效降解包括磺胺噻唑、恩诺沙星、对乙酰氨基酚、双酚A等在内的有机污染物。Sodium carbonate(Na_(2)CO_(3))combined with peroxymonosulfate(PMS)system is used to degrade bisphenol S(BPS)in water.The results show that low concentration of Na_(2)CO_(3)(1 mmol/L)with PMS can efficiently degrade BPS,and the p H of the solution after the reaction could meet the requirements of direct discharge.With the increase of Na_(2)CO_(3) concentration and PMS concentration,the degradation of BPS showed a trend of first increasing and then decreasing.Quenching experiments show that both singlet oxygen(^(1)O_(2))and superoxide radicals(O_(2)·-)are involved in the degradation process,and^(1)O_(2) is the main active species in the reaction system.Increasing the reaction temperature can promote the degradation of BPS and speed up the reaction rate.BPS has a good degradation effect in a wide range of initial p H value(4.72~10.75)of the solution.The Cland HA coexisting in the system can promote the degradation of BPS,SO_(4)^(2-)and NO_(3)^(-)basically do not affect the degradation of BPS.At the same time,the test identified four degradation products and speculated three possible degradation pathways for BPS.In addition,in a variety of actual water bodies,BPS can be degraded by more than 69%.Moreover,the system can also efficiently degrade organic pollutants including sulfathiazole,enrofloxacin,acetaminophen,bisphenol A,etc.

关 键 词：碳酸钠 过硫酸氢盐 双酚S 降解 有机污染物 

分 类 号：X131.2[环境科学与工程—环境科学]