CIESC Journal ›› 2024, Vol. 75 ›› Issue (3): 987-999.DOI: 10.11949/0438-1157.20231341

• Energy and environmental engineering • Previous Articles     Next Articles

Effect and mechanism on the degradation of aqueous bisphenol A by zero valent iron activated peroxyacetic acid system

Zhuoyu LI1(), Peng JIN1, Xiaoyan CHEN2, Zeyu ZHAO1, Qinghong WANG1, Chunmao CHEN1(), Yali ZHAN1   

  1. 1.State Key Laboratory of Heavy Oil Processing, College of Chemical Engineering and Environment, China University of Petroleum, Beijing 102249, China
    2.HSE Department,Sinopec Group, Beijing 100728, China
  • Received:2023-12-18 Revised:2024-03-05 Online:2024-05-11 Published:2024-03-25
  • Contact: Chunmao CHEN

零价铁活化过氧乙酸降解水中双酚A的效果与机制

李琢宇1(), 金鹏1, 陈孝彦2, 赵泽玉1, 王庆宏1, 陈春茂1(), 詹亚力1   

  1. 1.中国石油大学(北京)化学工程与环境学院,重质油全国重点实验室,北京 102249
    2.中国石油化工集团有限公司健康安全环保管理部,北京 100728
  • 通讯作者: 陈春茂
  • 作者简介:李琢宇(1992—),女,博士,讲师,Lizyhit@163.com
  • 基金资助:
    国家自然科学基金青年基金项目(22308382);国家自然科学基金面上项目(22278436)

Abstract:

Bisphenol A (BPA) is a representative pollutant in phenolic industrial wastewater. Zero valent iron (ZVI) was used to activate peroxyacetic acid (PAA) to remove BPA from water. The effects of ZVI and PAA dosage, pH value, and typical coexisting anions in industrial wastewater on PAA activation and BPA degradation were investigated, and the reaction mechanism of ZVI activation of PAA was analyzed by exploring the reactive species and active sites. Under the optimal process conditions of adding 50 mg/L ZVI, 1.00 mmol/L PAA and an initial pH of 3.4, the ZVI/PAA system can remove 99.24% of BPA in water for 30 minutes. HCO3- and SO42- showed inhibitory effects on BPA degradation, while Cl- (0—20.0 mmol/L) accelerated the degradation of BPA in ZVI/PAA system. Soluble Fe (Ⅱ) and Fe (Ⅲ) were released from ZVI and its surface oxide layer, respectively, during the reaction. The released Fe (Ⅱ) activation of PAA contributed 26.46% of BPA degradation, while heterogeneous ZVI activation of PAA played a major role in BPA degradation. Scavenging experiment showed that CH3C(O)OO·, CH3C(O)O·, ·OH and FeO2+ were produced in ZVI/PAA system, among which CH3C(O)OO· and FeO2+ were the major reactive species contributing to BPA degradation. This study provided data and theoretical support for the effective removal of bisphenol A in industrial wastewater.

Key words: phenolic wastewater, bisphenol A, peroxyacetic acid, zero valent iron, advanced oxidation processes

摘要:

双酚A(BPA)是含酚工业废水中代表性污染物,采用零价铁(ZVI)活化过氧乙酸(PAA)去除水中BPA,探究了ZVI和PAA投量、pH以及工业废水中典型共存阴离子对PAA活化和BPA降解的影响,并通过探究反应活性物种和活性位点解析了ZVI活化PAA的反应机制。在投加50 mg/L ZVI,1.00 mmol/L PAA和初始pH为3.4的最优工艺条件下,ZVI/PAA体系反应30 min可去除水中99.24%的BPA;HCO3-和SO42-对BPA降解具有抑制作用,Cl-(0~20.0 mmol/L)则加速BPA降解。反应中ZVI及其表面氧化层分别释放溶解性Fe(Ⅱ)和Fe(Ⅲ),溶出的Fe(Ⅱ)活化PAA贡献26.46%的BPA降解,非均相ZVI活化PAA对BPA降解起主要作用;淬灭实验表明,ZVI/PAA体系存在CH3C(O)OO·、CH3C(O)O·、·OH和FeO2+,其中CH3C(O)OO·和FeO2+是降解BPA的主要活性物种。本研究可为工业废水中双酚A的有效去除提供理论和数据支撑。

关键词: 含酚废水, 双酚A, 过氧乙酸, 零价铁, 高级氧化

CLC Number: