Journal ArticleDOI
Factors affecting the roles of reactive species in the degradation of micropollutants by the UV/chlorine process
Zihao Wu,Kaiheng Guo,Jingyun Fang,Xueqin Yang,Hong Xiao,Shaodong Hou,Xiujuan Kong,Chii Shang,Xin Yang,Fangang Meng,Liwei Chen +10 more
TLDR
The effects of the treatment conditions and the water matrix components of natural organic matter, alkalinity, ammonia and halides, on the kinetics and reactive species in the degradation of four micropollutants, metronidazole (MDZ), nalidixic acid (NDA), diethyltoluamide (DEET) and caffeine (CAF), by the UV/chlorine process were investigated.About:
This article is published in Water Research.The article was published on 2017-12-01. It has received 238 citations till now. The article focuses on the topics: Chlorine.read more
Citations
More filters
Journal ArticleDOI
Comparison of the UV/chlorine and UV/H2O2 processes in the degradation of PPCPs in simulated drinking water and wastewater: Kinetics, radical mechanism and energy requirements.
Kaiheng Guo,Zihao Wu,Shuwen Yan,Bo Yao,Weihua Song,Zhechao Hua,Xuewen Zhang,Xiujuan Kong,Xuchun Li,Jingyun Fang +9 more
TL;DR: The UV/chlorine approach was superior to the UV/H2O2 approach for the removal of all PPCPs in simulated drinking water and wastewater at the same molar oxidant dosage and saved 3.5-93.5% and 19.1%-98.1% electrical energy per order (EE/O) for PPCP degradation in simulated Drinking water andewater, respectively.
Journal ArticleDOI
Halogen Radical Oxidants in Natural and Engineered Aquatic Systems.
Ke Zhang,Kimberly M. Parker +1 more
TL;DR: This review presents an integrative analysis of the chemistry of halogen radicals and their contribution to aquatic photochemistry in sunlit surface waters and engineered treatment systems, evaluating existing data on the generation, speciation, and reactivity, as well as experimental and computational approaches used to obtain this data.
Journal ArticleDOI
Removal of antibiotic resistance genes and control of horizontal transfer risk by UV, chlorination and UV/chlorination treatments of drinking water
TL;DR: In this paper, the reduction of one antibiotic resistance gene (ARG, sul1) and one integron (intI1) within a multiple-antibiotic-resistant bacterium (ARB), Pseudomonas, during UV, chlorination and UV/chlorination was investigated.
Journal ArticleDOI
Degradation of lipid regulators by the UV/chlorine process: Radical mechanisms, chlorine oxide radical (ClO•)-mediated transformation pathways and toxicity changes
TL;DR: This study is the first to report the transformation pathway of a micropollutant by ClO•, and the acute toxicity of gemfibrozil to Vibrio fischeri increased significantly when subjected to direct UV photolysis, whereas it decreased when oxidized byClO•.
Journal ArticleDOI
The Impact of pH and Irradiation Wavelength on the Production of Reactive Oxidants during Chlorine Photolysis.
TL;DR: Hydroxyl radical and chlorine radical steady-state concentrations are greatest under acidic conditions for all tested wavelengths and are highest using 254 and 311 nm irradiation.
References
More filters
Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O− in Aqueous Solution
TL;DR: In this article, the rate constants for over 3500 reaction are tabulated, including reaction with molecules, ions and other radicals derived from inorganic and organic solutes, and the corresponding radical anions, ⋅O− and eaq−, have been critically pulse radiolysis, flash photolysis and other methods.
Journal ArticleDOI
Standardization of Methods for Fluence (UV Dose) Determination in Bench-Scale UV Experiments
James R. Bolton,Karl G. Linden +1 more
TL;DR: In this article, a detailed protocol for the determination of the fluence (UV dose) in a bench scale UV apparatus containing UV lamps emitting either monochromatic or broadband UV light was developed.
Journal ArticleDOI
The roles of reactive species in micropollutant degradation in the UV/free chlorine system.
Jingyun Fang,Yun Fu,Chii Shang +2 more
TL;DR: This study is the first to demonstrate the contributions of different reactive species to the micropollutant degradation in the UV/chlorine system under environmentally relevant conditions.
Journal ArticleDOI
Effect of halide ions and carbonates on organic contaminant degradation by hydroxyl radical-based advanced oxidation processes in saline waters.
TL;DR: Kinetic modeling of phenol destruction demonstrated that RHS contributed significantly to phenol Destruction, mitigating the impact of HO* scavenging, and the formation of halogenated byproducts was minimal.
Related Papers (5)
The roles of reactive species in micropollutant degradation in the UV/free chlorine system.
Jingyun Fang,Yun Fu,Chii Shang +2 more