Chloride-enhanced degradation of micropollutants in natural water by the iron/biochar/peroxymonosulfate system: Role of iron(IV) and radicals
文献类型： 外文期刊
作者： Zhang, Mengqiao 1 ; Gong, Wenwen 2 ; Wang, Xiling 1 ; Blaney, Lee 3 ; Peng, Guilong 1 ; Sharma, Virender K. 4 ;
作者机构： 1.Southwest Univ, Coll Sericulture Text & Biomass Sci, State Key Lab Resource Insects, Chongqing 400715, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Qual Stand & Testing Technol, Beijing 100097, Peoples R China
3.Univ Maryland Baltimore Cty, Dept Chem Biochem & Environm Engn, Baltimore, MD 21250 USA
4.Univ Miami, Dept Chem Environm & Mat Engn, 1251 Mem Dr, Miami, FL 33146 USA
关键词： Iron(IV); Biochar; Oxidation; Ferrate; Reactive chlorine species
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）
ISSN： 0304-3894
年卷期： 2025 年 492 卷
页码：
收录情况： SCI
摘要： The increased occurrence and concentration of micropollutants in water supplies raise public health concerns. Advanced oxidation of micropollutants in real water sources remains challenging due to scavenging reactions involving background anions and natural organic matter. For the first time, this paper demonstrates that chloride (Cl-) accelerates the activation of peroxymonosulfate (PMS) by iron-biochar (Fe/BC) composites. Under the tested conditions, this novel system completely degraded bisphenol A (BPA), a representative micropollutant, within 1.0 min. Micropollutant degradation was investigated at different Cl-contents, PMS levels, Fe/BC doses, and solution pH. The primary reactive species involved with BPA degradation were iron(IV) (Fe(IV)), sulfate radical (SO4 center dot-), hydroxyl radical (center dot OH), and reactive chlorine species (Cl center dot, ClO center dot, Cl2 center dot-). The steady-state concentrations of these reactive species were evaluated to determine their relationships to the Cl-and PMS contents. Fe (IV) was confirmed as the dominant reactive species, with Fe(IV) concentrations increasing with Cl-content and salinity to enhance the overall BPA degradation. Importantly, BPA degradation by the Fe/BC/PMS/Cl-system was not greatly affected by background anions or natural organic matter (NOM) present in real water sources, and the system was successfully applied for five sequential cycles of BPA treatment.
- 相关文献
作者其他论文 更多>>
-
Analysis of the steady-state concentrations of reactive species and their role in contaminant degradation by the iron-biochar/persulfate advanced oxidation process: Comparison of probe compound and quenching agent methods
作者：Meng, Xukun;Peng, Guilong;Yan, Yuting;Wang, Xiao;Zhu, Jiangwei;Belver, Carolina;Gong, Wenwen;Blaney, Lee;Peng, Guilong
关键词：Reactive species; Persulfate; Steady-state concentration; Iron-biochar; Advanced oxidation processes
-
A ratiometric fluorescent probe for the determination of quinolone antibiotics in milk based on N and S co-doped carbon quantum dots
作者：Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Wang, Fang;Li, Xiaoyun;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Han, Jiajun;Gong, Wenwen
关键词：Carbon quantum dot; Ratiometric fluorescence probe; Moxifloxacin; Gatifloxacin; Ofloxacin; Milk
-
Investigation of the competitive adsorption mechanism between typical volatile organic compounds (VOCs) and water vapor in waste gas emissions from the fermentation industry
作者：Yao, Xiaolong;Liang, Xinyue;Shi, Yue;Zhou, Jingya;Yao, Xiaolong;Liang, Xinyue;Zhou, Jingya;Shi, Yue;Bu, Qingwei;Gong, Wenwen
关键词：Water vapor; adsorption; volatile organic compounds; activated carbon
-
Highly Efficient Removal of Organic Pollutants with HCO3--Enhanced Ru(III)/NaClO Process
作者：Zhang, Yuhan;Peng, Guilong;Yan, Yuting;Meng, Xukun;Zhang, Yuhan;Peng, Guilong;Gong, Wenwen
关键词：advanced oxidation processes; sodium bicarbonate; NaClO; Ru(III); Ru(V)=O
-
Application of carbon quantum dots as fluorescent probes in the detection of antibiotics and heavy metals
作者：Wang, Fang;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Wang, Fang;Zhang, Yuchen;Li, Hui;Jiang, Shanxue;Li, Dandan;Yao, Zhiliang;Gong, Wenwen;Han, Jiajun
关键词：Antibiotics; Heavy metals; Carbon quantum dots; Fluorescence quenching; Fluorescence enhancement
-
Effect of Multiyear Biodegradable Plastic Mulch on Soil Microbial Community, Assembly, and Functioning
作者：Liu, Xiaowei;Wen, Zongyu;Wen, Zongyu;Dong, Wentao;Ren, Huiqing;Liang, Gang;Gong, Wenwen;Zhou, Wei
关键词：biodegradable plastics; soil microorganisms; microbial diversity; ecological functions; nutrient cycling
-
Mechanistic insights into peracetic acid activation by iron-biochar composites prepared at low and high temperature for enhanced contaminant degradation: Selective reactive species generation
作者：Peng, Guilong;Yan, Yuting;Meng, Xukun;Yan, Yuting;Gong, Wenwen;Qi, Chengdu;Chen, Junhua;Blaney, Lee
关键词：Peracetic acid; Iron-biochar; Acetaminophen; Reactive species; Advanced oxidation
