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1. Bacteria inactivation by sulfate radical: progress and non-negligible disinfection by-products

Author:
Xin Zhou; Xiaoya Ren; Yu Chen; Haopeng Feng; Jiangfang Yu; Kang Peng; Yuying Zhang; Wenhao Chen; Jing Tang; Jiajia Wang; Lin Tang
Source:
Frontiers of environmental science & engineering 2023 v.17 no.3 pp. 29
ISSN:
2095-2201
Subject:
chlorine,   etc   ; bromine; disinfection; environmental science; iodides; pathogens; sulfates;     Show all 7 Subjects
Abstract:
... Sulfate radicals have been increasingly used for the pathogen inactivation due to their strong redox ability and high selectivity for electron-rich species in the last decade. The application of sulfate radicals in water disinfection has become a very promising technology. However, there is currently a lack of reviews of sulfate radicals inactivated pathogenic microorganisms. At the same time, les ...
DOI:
10.1007/s11783-023-1629-9

2. Molecular characterization of disinfection byproduct precursors in filter backwash water from 10 drinking water treatment plants

Author:
Yunkun Qian; Yijun Shi; Jun Guo; Yanan Chen; David Hanigan; Dong An
Source:
Science of the total environment 2023 v.856 pp. 159027
ISSN:
0048-9697
Subject:
chlorine,   etc   ; byproducts; disinfection; dissolved organic matter; environment; mass spectrometry; molecular weight; oxidation; water treatment;     Show all 9 Subjects
Abstract:
... Organic matter reacts with chlorine forming disinfection byproducts (DBPs) including trihalomethanes (THMs), haloacetamides (HAMs), haloacetic acids (HAAs), and haloacetonitriles (HANs). Filter backwash water (FBW) is either released back to the environment or recycled to the head of the treatment plant after solids settling and the remaining dissolved organic matter is a significant pool of DBP p ...
DOI:
10.1016/j.scitotenv.2022.159027

3. Enhanced cyanogen chloride formation after UV/PS and UV/H2O2 pre-oxidation and chlorination in natural river water

Author:
Jie Xu; Yang Guo; Qian Yang; Xueling Bai; Runhua Lu; Menghui Liu; Zichen Kuang; Luo Zhang; Jing Li
Source:
Journal of environmental sciences (China) 2023 v.126 pp. 48-57
ISSN:
1001-0742
Subject:
chlorine,   etc   ; arginine; chlorides; chlorination; cyanogen; histidine; hydrogen peroxide; oxidation; river water; uric acid; water treatment; China;     Show all 12 Subjects
Abstract:
... Ultraviolet/persulfate (UV/PS) and Ultraviolet/hydrogen peroxide (UV/H₂O₂) have attracted much attention in recent years as advanced oxidation processes for water treatment. However, it is not all clear how these two methods affect the formation of cyanogen chloride (CNCl) in the subsequent water chlorination process. In this study, it was found that both UV/H₂O₂ and UV/PS pre-oxidation promoted t ...
DOI:
10.1016/j.jes.2022.03.049

4. Thermal plasma co-gasification of polyvinylchloride and biomass mixtures under steam atmospheres: Gasification characteristics and chlorine release behavior

Author:
Chu Chu; Ping Wang; Abdoulaye Boré; Wenchao Ma; Guanyi Chen; Pan Wang
Source:
Energy 2023 v.262 pp. 125385
ISSN:
0360-5442
Subject:
chlorine,   etc   ; biomass; carbon; energy; gasification; pollution control; poly(vinyl chloride); quantitative analysis; steam; synthesis gas; temperature; thermodynamics;     Show all 12 Subjects
Abstract:
... This study systematically explores the syngas characteristics and chlorine release behavior during plasma co-gasification of polyvinylchloride (PVC) and biomass through experimental and thermodynamic methods. The results indicate that carbon conversion rate and chlorine release ratio are positively associated with power and steam/carbon ratio. Plasma co-gasification of PVC and biomass yields 4.96– ...
DOI:
10.1016/j.energy.2022.125385

5. Chlorine and peroxyacetic acid inactivation of Listeria monocytogenes in simulated apple dump tank water

Author:
Rory Y. Wang; Xiaoye Shen; Yuan Su; Faith Critzer; Mei-Jun Zhu
Source:
Food control 2023 v.144 pp. 109314
ISSN:
0956-7135
Subject:
chlorine,   etc   ; Listeria monocytogenes; apples; chemical oxygen demand; cross contamination; food safety; industry; octanoic acid; organic matter; peracetic acid; water quality;     Show all 11 Subjects
Abstract:
... During postharvest processing, apples are transported via dump tanks and flumes with recirculated water treated with sanitizers. This study examined the efficacies of chlorine and peroxyacetic acid (PAA) in controlling Listeria monocytogenes in simulated dump tank water (SDTW) and cross-contamination, and evaluated the strengthening effects of octanoic acid (OA), a Generally Recognized as Safe com ...
DOI:
10.1016/j.foodcont.2022.109314
CHORUS:
10.1016/j.foodcont.2022.109314

6. Efficacy of gaseous chlorine dioxide generated by sodium chlorite - carbon dioxide reaction on safety and quality of blueberries, cherry tomatoes, and grapes

Author:
Tao Jiang; Fengting Guo; Ting Fang; Cheng-An Hwang; Lihan Huang
Source:
Food control 2023 v.143 pp. 109288
ISSN:
0956-7135
Subject:
chlorine dioxide,   etc   ; Listeria monocytogenes; Salmonella; blueberries; calyx; carbon dioxide; cherries; cherry tomatoes; chlorites; color; food safety; fruits; grapes; hardness; product safety; storage time; weight loss;     Show all 17 Subjects
Abstract:
... This research evaluated the inactivation of Salmonella spp. and Listeria monocytogenes inoculated onto the calyces of blueberries, stem scars of cherry tomatoes, and surfaces of grapes using gaseous chlorine dioxide (ClO₂) produced by the reaction between sodium chlorite (NaClO₂) and carbon dioxide (CO₂). The inoculated samples were treated with ClO₂ gas in a treatment chamber for 3 h. The results ...
DOI:
10.1016/j.foodcont.2022.109288

7. Lead-chlorine synergistic immobilization mechanism in municipal solid waste incineration fly ash (MSWIFA)-based magnesium potassium phosphate cement

Author:
Xing Cao; Qiushi Zhang; Weichen Yang; Lin Fang; Shiwei Liu; Rui Ma; Kai Guo; Ning Ma
Source:
Journal of hazardous materials 2023 v.442 pp. 130038
ISSN:
0304-3894
Subject:
chlorine,   etc   ; X-ray absorption spectroscopy; X-ray diffraction; cement; compression strength; energy; fly ash; lead; magnesium; municipal solid waste; potassium phosphates; thermodynamics; toxicity; transmission electron microscopes; waste incineration;     Show all 15 Subjects
Abstract:
... The high chlorine (Cl) and lead (Pb) content characteristics of municipal solid waste incineration fly ash (MSWIFA) pose environmental risks and hinder resource utilization. Herein, an MSWIFA-based magnesium potassium phosphate cement (MKPC) preparation strategy was developed, which allowed the MSWIFA recycling and the Pb-Cl synergistic immobilization without the washing pretreatment. The compress ...
DOI:
10.1016/j.jhazmat.2022.130038

8. Effects of a novel combination of gallic acid, hydrogen peroxide and lactic acid on pathogen inactivation and shelf-life of baby spinach

Author:
Bin Zhou; Yaguang Luo; Xiangwu Nou; Esther Mwangi; Elena Poverenov; Victor Rodov; Philip Demokritou; Jorge M. Fonseca
Source:
Food control 2023 v.143 pp. 109284
ISSN:
0956-7135
Subject:
chlorine,   etc   ; Escherichia coli O157; Listeria monocytogenes; cold storage; food safety; foodborne illness; fresh produce; gallic acid; humans; hydrogen peroxide; industry; lactic acid; leaves; organic foods; peracetic acid; shelf life; spinach; storage time;     Show all 18 Subjects
Abstract:
... Recurring foodborne illness outbreaks associated with the consumption of contaminated leafy greens attest to the challenges facing the produce industry. Here we report the effects of a novel combination of gallic acid (1500 mg/L), hydrogen peroxide (30 mg/L), and lactic acid (1800 mg/L) (GHL) on inactivation of foodborne human pathogens on baby spinach. Fresh baby spinach samples inoculated with E ...
DOI:
10.1016/j.foodcont.2022.109284

9. Catalytic destruction of chlorobenzene over K-OMS-2: Inhibition of high toxic byproducts via phosphate modification

Author:
Yunpeng Long; Jiajia Liu; Meiling Chen; Renna Li; Xiaole Weng; Zhongbiao Wu
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 844-854
ISSN:
1001-0742
Subject:
chlorine,   etc   ; Lewis acids; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; byproducts; catalysts; catalytic activity; chlorobenzene; dechlorination; desorption; human health; hydrogen; oxidation; phosphates; pollutants; pyridines; risk; toxicity; volatile organic compounds; water temperature; China;     Show all 22 Subjects
Abstract:
... In the process of catalytic destruction of chlorinated volatile organic compounds (CVOCs), the catalyst is prone to chlorine poisoning and produce polychlorinated byproducts with high toxicity and persistence, bringing great risk to atmospheric environment and human health. To solve these problems, this work applied phosphate to modify K-OMS-2 catalysts. The physicochemical properties of catalysts ...
DOI:
10.1016/j.jes.2022.08.011

10. Aqueous N-nitrosamines: Precursors, occurrence, oxidation processes, and role of inorganic ions

Author:
Tahereh Jasemizad; Peizhe Sun; Lokesh P. Padhye
Source:
Critical reviews in environmental science and technology 2022 v.52 no.20 pp. 3604-3650
ISSN:
1547-6537
Subject:
chlorine; chlorine dioxide,   etc   ; N-nitrosodimethylamine; disinfection; humans; mineralization; oxidation; ozonation; ozone; wastewater;     Show all 10 Subjects
Abstract:
... N-Nitrosamines, well-known human carcinogens, are widely considered to be formed through the disinfection of waters containing compounds with amine moieties. The formation mechanisms of nitrosamines during the disinfection of drinking water and wastewater have been previously reviewed in the literature. However, no study to date has reviewed the effects of inorganic ions on nitrosamines formation ...
DOI:
10.1080/10643389.2021.1930439

11. A pilot-scale evaluation of using gaseous chlorine dioxide for decontamination of foodborne pathogens on produce and low-moisture foods

Author:
Tan Jing Ni; Hwang Cheng- An; Huang Lihan; Wu Vivian C.H.; Hsiao Hsin- I.
Source:
Journal of food safety 2022 v.42 no.2 pp. -
ISSN:
0149-6085
Subject:
chlorine; chlorine dioxide,   etc   ; Listeria monocytogenes; Salmonella; Shiga toxin-producing Escherichia coli; decontamination; food safety;     Show all 7 Subjects
Abstract:
... Small-scale studies have shown that chlorine dioxide gas, ClO2(g), was effective for decontamination of produce, nuts, and spices. This study conducted a pilot-scale evaluation to identify effective ClO2(g) treatment parameters for commercial-scale applications. The gas was produced by a generator utilizing chlorite and chlorine gas for decontamination of Shiga toxin-producing Escherichia coli (ST ...
Handle:
10113/7709644
DOI:
10.1111/jfs.12937

12. Passive sampling of chlorinated paraffins by silicone: Focus on diffusion and silicone-water partition coefficients

Author:
Mathilde Godéré; Laure Malleret; Patrick Höhener; Pierre Doumenq
Source:
Chemosphere 2022 v.287 pp. 132201
ISSN:
0045-6535
Subject:
chlorine,   etc   ; carbon; chlorination; silicone;     Show all 4 Subjects
Abstract:
... Short-chain chlorinated paraffins (SCCPs) are under regulation through the European Water Framework Directive and were recently classified as POPs. Consecutively, the increasing use of middle-chain chlorinated paraffins (MCCPs) becomes of growing concern. Knowledge on the occurrence of chlorinated paraffins (CPs) is still scarce particularly in water phase. To achieve sufficient method sensitivity ...
DOI:
10.1016/j.chemosphere.2021.132201

13. Differentiation of DNA or membrane damage of the cells in disinfection by flow cytometry

Author:
Ruihua Cao; Qiqi Wan; Xiangqian Xu; Shiqi Tian; Gehui Wu; Jingyi Wang; Tinglin Huang; Gang Wen
Source:
Journal of hazardous materials 2022 v.435 pp. 128924
ISSN:
0304-3894
Subject:
chlorine; chlorine dioxide,   etc   ; DNA; DNA damage; centrifugation; disinfection; flow cytometry; fluorescence; fungi; propidium; water supply;     Show all 11 Subjects
Abstract:
... Recently, the viabilities changes of fungal spores in the water supply system during different disinfection processes have been revealed. SYBR Green I (SG), a nucleic acid stain, its fluorescence intensity is correlated with the amount of double-stranded DNA. This study established a new method through successive SG-SG-PI staining (PI: Propidium Iodide) with flow cytometry (FCM). It could successf ...
DOI:
10.1016/j.jhazmat.2022.128924

14. Free chlorine formation in the process of the chlorine dioxide oxidation of aliphatic amines

Author:
Yang Guo; Jie Xu; Xueling Bai; Yan Lin; Wenfeng Zhou; Jing Li
Source:
Water research 2022 v.217 pp. 118399
ISSN:
0043-1354
Subject:
chlorine; chlorine dioxide,   etc   ; antibacterial properties; chlorides; cyanogen; disinfectants; disinfection; methylamine; oxidants; oxidation; phenol; research; water;     Show all 13 Subjects
Abstract:
... Chlorine dioxide (ClO₂) is commonly used as an alternative disinfectant to chlorine because it has a high bactericidal effect and may produce limited concentrations of halogenated disinfection byproducts (DBPs). However, previous studies have reported that free available chlorine (FAC) was produced when ClO₂ reacted with some compounds, such as phenol, leading to the formation of halogenated DBPs. ...
DOI:
10.1016/j.watres.2022.118399

15. Significant role of counterion for lead(Ⅱ) ion adsorption on carbon pore surface

Author:
Toshihide Horikawa; Miku Okamoto; Ayaka Kuroki-Matsumoto; Ken Yoshida
Source:
Carbon 2022 v.196 pp. 575-588
ISSN:
0008-6223
Subject:
chlorine,   etc   ; activated carbon; adsorption; graphene;     Show all 4 Subjects
Abstract:
... We have presented a predictive tool for describing Pb²⁺ adsorption on activated carbon (AC). Based on the correlation between the G/D ratio and the adsorbed amount of Pb²⁺ obtained in our previous study (Kuroki et al., 2019), we have further validated the predictive tool by carefully analyzing the results of lead ion adsorption on different AC samples in the present study. Our results show that th ...
DOI:
10.1016/j.carbon.2022.05.031

16. “Solvent-induced chirality switching” in the enantioseparation of chlorine-substituted tropic acids via diastereomeric salt formation by (1R,2S)-(−)-2-amino-1,2-diphenylethanol (ADPE)

Author:
Srinivas Chandrasekaran; Takuji Hirose; Koichi Kodama
Source:
Tetrahedron 2022 v.108 pp. 132653
ISSN:
0040-4020
Subject:
chlorine,   etc   ; crystallization; optical isomerism; solvents;     Show all 4 Subjects
Abstract:
... The optical resolution of chlorine-substituted tropic acids (TAs) by diastereomeric salt formation with (1R,2S)-(−)-2-amino-1,2-diphenylethanol ((−)-ADPE) has been demonstrated. Efficient solvent-induced chirality switching was observed in the case of racemic 2-chlorotropic acid (rac-2-Cl-TA). The recrystallization of the diastereomeric salts of rac-2-Cl-TA from branched alcohols such as i-PrOH an ...
DOI:
10.1016/j.tet.2022.132653

17. ClO2 pre-oxidation changes dissolved organic matter at the molecular level and reduces chloro-organic byproducts and toxicity of water treated by the UV/chlorine process

Author:
Tao Li; Chii Shang; Yingying Xiang; Ran Yin; Yang Pan; Mengge Fan; Xin Yang
Source:
Water research 2022 v.216 pp. 118341
ISSN:
0043-1354
Subject:
chlorine; chlorine dioxide,   etc   ; carbon; cytotoxicity; dissolved organic matter; genotoxicity; mass spectrometry; oxidation; research; toxicity testing; water;     Show all 11 Subjects
Abstract:
... The formation of undesirable chloro-organic byproducts is of great concern in the UV/chlorine process. In this study, chlorine dioxide (ClO₂) pre-oxidation was applied to control the formation of chloro-organic byproducts and the toxicity in UV/chlorine-treated water. The molecular-level changes in dissolved organic matter (DOM) were tracked by using Fourier transform ion cyclotron resonance mass ...
DOI:
10.1016/j.watres.2022.118341

18. Towards the production of chlorine dioxide from electrochemically in‐situ produced solutions of chlorate

Author:
Mayra Kerolly Sales Monteiro; Ángela Moratalla; Cristina Sáez; Elisama Vieira Dos Santos; Manuel Andrés Rodrigo
Source:
Journal of chemical technology and biotechnology 2022 v.97 no.8 pp. 2024-2031
ISSN:
0268-2575
Subject:
chlorine; chlorine dioxide,   etc   ; biotechnology; chlorates; electrochemistry; electrolysis; hydrogen peroxide; manufacturing; oxidants; oxidation; sodium chloride; sulfuric acid; temperature;     Show all 13 Subjects
Abstract:
... BACKGROUND: This work focuses on the electrochemical production of chlorate solutions for direct use and integration in the manufacture of chlorine dioxide (ClO₂), from the perspective of manufacturing portable ClO₂ electrochemical generators. RESULTS: Chlorate production was evaluated from the oxidation of sodium chloride (NaCl) contained in brackish solutions (20 g L⁻¹) and brines (200 g L⁻¹) in ...
DOI:
10.1002/jctb.7073

19. Photoinduced Ligand-to-Metal Charge Transfer (LMCT) of Fe Alkoxide Enabled C–C Bond Cleavage and Amination of Unstrained Cyclic Alcohols

Author:
Ting Xue; Zongnan Zhang; Rong Zeng
Source:
Organic letters 2022 v.24 no.3 pp. 977-982
ISSN:
1523-7052
Subject:
chlorine,   etc   ; amination; cleavage (chemistry); electron transfer;     Show all 4 Subjects
Abstract:
... We report an alkoxy radical process for the C–C bond cleavage and functionalization of unstrained tertiary and secondary cyclic alcohols. In the absence of a chlorine atom, the readily available iron catalysts [Fe(OBu-t)₃ or Fe(acac)₃/t-BuONa] facilitate alkoxy radical formation via the direct ligand-to-metal charge transfer of Fe alkoxide and further enable the ring opening and amination of cycli ...
DOI:
10.1021/acs.orglett.1c04365

20. Rate constants of chlorine atom reactions with organic molecules in aqueous solutions, an overview

Author:
László Wojnárovits; Jianlong Wang; Libing Chu; Erzsébet Takács
Source:
Environmental science and pollution research 2022 v.29 no.37 pp. 55492-55513
ISSN:
0944-1344
Subject:
chlorine,   etc   ; pollution; research; uncertainty; water purification;     Show all 5 Subjects
Abstract:
... Rate constants of chlorine atom (Cl•) reactions (kCₗ•) determined using a large variation of experimental methods, including transient measurements, steady-state and computation techniques, were collected from the literature and were discussed together with the reaction mechanisms. The kCₗ• values are generally in the 10⁸–10⁹ mol⁻¹ dm³ s⁻¹ range when the basic reaction between the Cl• and the targ ...
DOI:
10.1007/s11356-022-20807-9