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1. Synergistic control of membrane biofouling using linoleic acid and sodium hypochlorite

Author:
Ham, So-Young; Kim, Han-Shin; Jang, Yongsun; Ryoo, Hwa-Soo; Lee, Jeong-Hoon; Park, Jeong-Hoon; Park, Hee-Deung
Source:
Chemosphere 2021 v.268 pp. 128802
ISSN:
0045-6535
Subject:
sodium hypochlorite,   etc   ; biofilm; biofouling; linoleic acid; polymers; reverse osmosis;     Show all 6 Subjects
Abstract:
... Biofouling is a major operational problem in the reverse osmosis (RO) process, affecting the membrane performance. Although sodium hypochlorite (NaOCl) is used to chemically clean the biofouled membranes, high concentrations of NaOCl cause morphological and chemical damage to the RO membrane. The objective of this study is to enhance chemical cleaning efficiency by combining with a dispersion agen ...
DOI:
10.1016/j.chemosphere.2020.128802

2. Multiple assessment methodologies in determining the antibiofilm actions of sodium hypochlorite mixed with clodronate or etidronate in endodontic irrigation

Author:
Wright, Patricia P.; Cooper, Crystal; Kahler, Bill; Walsh, Laurence J.
Source:
Journal of microbiological methods 2021 v.180 pp. 106107
ISSN:
0167-7012
Subject:
sodium hypochlorite,   etc   ; Enterococcus faecalis; biofilm; chelating agents; hydroxyapatite; irrigation;     Show all 6 Subjects
Abstract:
... This study aimed to use multiple methodologies, including a novel usage of scanning electron microscopy (SEM), to evaluate the antimicrobial actions of sodium hypochlorite (NaOCl) admixed with clodronate or etidronate in root canal irrigation. The study also examined the usefulness of colony counting as a biofilm assessment methodology. Seven day Enterococcus faecalis biofilms were grown on hydrox ...
DOI:
10.1016/j.mimet.2020.106107

3. Impact of sodium hypochlorite on rejection of non-steroidal anti-inflammatory drugs by biomimetic forward osmosis membranes

Author:
Ghamri, Walid; Loulergue, Patrick; Petrinić, Irena; Hélix-Nielsen, Claus; Pontié, Maxime; Nasrallah, Noureddine; Daoud, Kamel; Szymczyk, Anthony
Source:
Journal of membrane science 2021 v.633 pp. 119388
ISSN:
0376-7388
Subject:
sodium hypochlorite,   etc   ; antagonists; aquaporins; biomimetics; chlorination; chlorine; diclofenac; energy; exposure duration; hydrogen bonding; osmosis; pH;     Show all 12 Subjects
Abstract:
... Biomimetic forward osmosis membranes with a polyamide-based active layer containing polymersomes incorporating aquaporins were exposed to various free chlorine doses (free chlorine concentration x exposure time) and pH. Membrane chlorination was found to decrease the apolar/polar balance of the membrane surface energy and to increase its negative surface charge density. A substantial modification ...
DOI:
10.1016/j.memsci.2021.119388

4. Optimal cleaning strategy to alleviate fouling in membrane distillation process to treat anaerobic digestate

Author:
Charfi, Amine; Kim, Sewoon; Yoon, Yeomin; Cho, Jinwoo
Source:
Chemosphere 2021 v.279 pp. 130524
ISSN:
0045-6535
Subject:
sodium hypochlorite,   etc   ; anaerobic digestion; citric acid; distillation; inorganic matter; sludge; wastewater;     Show all 7 Subjects
Abstract:
... This paper deals with the membrane fouling issue in the Direct Contact Membrane Distillation (DCMD) process treating a wasted sludge from an anaerobic digestion process. The main objective is to define an optimal cleaning strategy to alleviate fouling. Using a lab scale DCMD process, a cleaning strategy based on DI water flushing followed by 0.2% sodium hypochlorite (NaOCl) and 3% citric acid (C₆H ...
DOI:
10.1016/j.chemosphere.2021.130524

5. Oxidants-assisted sand filter to enhance the simultaneous removals of manganese, iron and ammonia from groundwater: Formation of active MnOx and involved mechanisms

Author:
Yang, Haiyang; Tang, Xiaobin; Luo, Xinsheng; Li, Guibai; Liang, Heng; Snyder, Shane
Source:
Journal of hazardous materials 2021 v.415 pp. 125707
ISSN:
0304-3894
Subject:
sodium hypochlorite,   etc   ; adsorption; ammonia; groundwater; iron; manganese; oxidation; potassium; potassium permanganate; sand; sand filters; sodium;     Show all 12 Subjects
Abstract:
... Oxidants are routinely employed to remove manganese from groundwater deeply, but the conversion pathway of manganese in the process still needed to be explored. In this study, potassium permanganate and sodium hypochlorite were introduced to explore their start-up effect on sand filters in treating high concentration of manganese (1.42–1.94 mg/L). The addition of potassium permanganate would effec ...
DOI:
10.1016/j.jhazmat.2021.125707

6. Antipsychotic clozapine binding to alpha-2-macroglobulin protects interacting partners against oxidation and preserves the anti-proteinase activity of the protein

Author:
Šunderić, Miloš; Vasović, Tamara; Milčić, Miloš; Miljević, Čedo; Nedić, Olgica; Nikolić, Milan R.; Gligorijević, Nikola
Source:
International journal of biological macromolecules 2021 v.183 pp. 502-512
ISSN:
0141-8130
Subject:
sodium hypochlorite,   etc   ; antipsychotics; free radicals; hydrogen; hydrophobicity; oxidation; oxidative stress; spectroscopy;     Show all 8 Subjects
Abstract:
... In this study, the interaction between clozapine, an atypical antipsychotic drug, and alpha-2-macroglobulin (α₂M), a multipurpose anti-proteinase, was investigated under simulated (patho) physiological conditions using multiple spectroscopic techniques and molecular modeling. It was found that α₂M binds clozapine with a moderate affinity (the binding constant of 0.9 × 10⁵ M⁻¹ at 37 °C). The prefer ...
DOI:
10.1016/j.ijbiomac.2021.04.155

7. Combined impact of silver nanoparticles and chlorine on the cell integrity and toxin release of Microcystis aeruginosa

Author:
Singh, Abhishek; Hou, Wen-Che; Lin, Tsair-Fuh
Source:
Chemosphere 2021 v.272 pp. 129825
ISSN:
0045-6535
Subject:
sodium hypochlorite,   etc   ; Microcystis aeruginosa; cell membranes; chlorine; freshwater; microcystins; nanosilver; oxidants; silver; toxicity; water treatment;     Show all 11 Subjects
Abstract:
... Silver nanoparticles (AgNPs) have shown to be toxic to freshwater cyanobacterial species, and sodium hypochlorite (NaOCl) is a common oxidant for the treatment of cyanobacterial cells. AgNPs have a high possibility of co-existing with the cyanobacterial cells in the aqueous environments leading to its exposure to NaOCl during water treatment; however, their combined effects on the cyanobacterial c ...
DOI:
10.1016/j.chemosphere.2021.129825

8. Decreased biofilm formation by planktonic cells of Listeria monocytogenes in the presence of sodium hypochlorite

Author:
Bansal, Mohit; Dhowlaghar, Nitin; Nannapaneni, Ramakrishna; Kode, Divya; Chang, Sam; Sharma, Chander S.; McDaniel, Christopher; Kiess, Aaron
Source:
Food microbiology 2021 v.96 pp. 103714
ISSN:
0740-0020
Subject:
sodium hypochlorite,   etc   ; Listeria monocytogenes; biofilm; food microbiology; gene expression; plankton; polystyrenes; serotypes;     Show all 8 Subjects
Abstract:
... The objective of this study was to determine if the adaptation at planktonic stage to subinhibitory concentrations (SIC) of sodium hypochlorite (NaOCl) could modulate the biofilm forming ability of five Listeria monocytogenes strains V7, Scott A, FSL-N1-227, FSL F6-154 and ATCC 19116 representing serotypes 1/2a, 4b and 4c. Biofilm formation by NaOCl nonadapted and adapted L. monocytogenes plankton ...
DOI:
10.1016/j.fm.2020.103714

9. Preheat-Treatment and Bleaching Agents Affect Characteristics of Bio-calcium from Asian Sea Bass (Lates calcarifer) Backbone

Author:
Wijayanti, Ima; Benjakul, Soottawat; Sookchoo, Pornsatit
Source:
Waste and biomass valorization 2021 v.12 no.6 pp. 3371-3382
ISSN:
1877-2641
Subject:
sodium hypochlorite,   etc   ; Lates calcarifer; autoclaving; bioavailability; biomass; calcium; hydrogen peroxide; particle size; solubility; wastes;     Show all 10 Subjects
Abstract:
... PURPOSE: This study aimed to elucidate the effect of preheat-treatments and bleaching agents on molecular characteristics and bioavailability of obtained bio-calcium. METHODS: Bio-calcium from Asian sea bass backbone was prepared using different preheat-treatment methods (boiling at 100 °C for 30 min or autoclaving at 121 °C for 90 min). Subsequent bleaching was carried out using 2.5% sodium hypoc ...
DOI:
10.1007/s12649-020-01224-w

10. The control of cheese and meat product spoilage fungi by sanitizers: In vitro testing and food industry usage

Author:
Bernardi, Angélica Olivier; Stefanello, Andrieli; Garcia, Marcelo Valle; Copetti, Marina Venturini
Source:
Lebensmittel-Wissenschaft + [i.e. und] Technologie 2021 v.144 pp. 111204
ISSN:
0023-6438
Subject:
sodium hypochlorite,   etc   ; benzalkonium chloride; cheeses; food industry; fumigants; fungi; meat; peracetic acid; sanitizers; spoilage;     Show all 10 Subjects
Abstract:
... This work analyzed the antifungal capacity of different sanitizers allowed in the food industry against species involved in the spoilage of dairy and meat products and compared the results with sanitizing products used in the food industry. Tests were carried out according to the protocol for testing the antifungal effects of chemical sanitizers of the European Committee for Standardization (CEN) ...
DOI:
10.1016/j.lwt.2021.111204

11. Chemical cleaning reagent of sodium hypochlorite eroding polyvinylidene fluoride ultrafiltration membranes: Aging pathway, performance decay and molecular mechanism

Author:
Ren, Liumo; Yu, Shuili; Yang, Haijun; Li, Lei; Cai, Luyang; Xia, Qing; Shi, Zhiyuan; Liu, Guicai
Source:
Journal of membrane science 2021 v.625 pp. 119141
ISSN:
0376-7388
Subject:
sodium hypochlorite,   etc   ; adhesion; antifouling activities; polyvinylpyrrolidone; porosity; thermoplastics; ultrafiltration; wastewater treatment;     Show all 8 Subjects
Abstract:
... In a practical project of polyvinylidene fluoride (PVDF) ultrafiltration membrane for polymer flooding wastewater treatment, the deterioration of membrane performance was observed after 4 years of operation. The aging effects of sodium hypochlorite (NaClO) on PVDF ultrafiltration membranes were systematically studied, including the membrane properties, filtration performance, and fouling behaviors ...
DOI:
10.1016/j.memsci.2021.119141

12. Can Probiotics Emerge as Effective Therapeutic Agents in Apical Periodontitis? A Review

Author:
Kumar, Gaurav; Tewari, Sanjay; Tagg, John; Chikindas, Michael Leonidas; Popov, Igor V; Tiwari, Santosh Kumar
Source:
Probiotics and antimicrobial proteins 2021 v.13 no.2 pp. 299-314
ISSN:
1867-1306
Subject:
sodium hypochlorite,   etc   ; bone resorption; chlorhexidine; cytotoxicity; endodontics; immune system; instrumentation; periodontitis; probiotics; therapeutics; tooth pulp;     Show all 11 Subjects
Abstract:
... Apical periodontitis (AP) is a biofilm-associated disease initiated by the invasion of dental pulp by microorganisms from the oral cavity. Eradication of intracanal microbial infection is an important goal of endodontic treatment, and this is typically accomplished by mechanical instrumentation and application of sodium hypochlorite and chlorhexidine. However, these agents are tissue-irritating at ...
DOI:
10.1007/s12602-021-09750-2

13. Impact of chlorine dioxide and electron-beam irradiation for the reduction of murine norovirus in low-salted “jogaejeotgal”, a traditional Korean salted and fermented clam

Author:
Han, Sangha; Jo, Ji Yeon; Park, Sa Reum; Choi, Changsun; Ha, Sang-Do
Source:
International journal of food microbiology 2021 v.342 pp. 109073
ISSN:
0168-1605
Subject:
sodium hypochlorite,   etc   ; Norovirus; chlorine dioxide; clams; disinfectants; fermentation; food microbiology; humans; irradiation; mice; seafoods; viruses;     Show all 12 Subjects
Abstract:
... Clam jeotgal, called “jogaejeotgal,” is a Korean fermented seafood product with, generally, a high amount of added salt to inhibit the growth of pathogenic microorganisms. This study aimed to evaluate the efficacy of chlorine dioxide (ClO₂) and sodium hypochlorite (NaOCl) against murine norovirus 1 (MNV-1), a surrogate for human norovirus, in salt-fermented clam, jogaejeotgal. The sequential effec ...
DOI:
10.1016/j.ijfoodmicro.2021.109073

14. Occurrence of disinfectant-resistant bacteria in a fresh-cut vegetables processing facility and their role in protecting Salmonella enteritidis

Author:
Xu, Jing-Guo; Meng, Jiao; Bao, Wen-Jing; Kang, Jia-Mu; Chen, Jing-Yu; Han, Bei-Zhong
Source:
RSC advances 2021 v.11 no.17 pp. 10291-10299
ISSN:
2046-2069
Subject:
sodium hypochlorite,   etc   ; Salmonella Enteritidis; biofilm; biomass; disinfectants; food pathogens; hydrogen peroxide; plankton;     Show all 8 Subjects
Abstract:
... Chemical disinfectants are widely used to control foodborne pathogen contamination in fresh-cut vegetables (FVs) processing facilities. In this study, we investigated the disinfectant-resistant bacteria in a FVs processing facility and evaluate the effects of these bacteria on Salmonella enteritidis biofilm formation and disinfectant resistance. The disinfectant-resistance profiles were determined ...
DOI:
10.1039/d0ra09325d

15. Insights on toxin genotyping, virulence, antibiogram profiling, biofilm formation and efficacy of disinfectants on biofilms of Clostridium perfringens isolated from poultry, animals and humans

Author:
Gharieb, R.; Saad, M.; Abdallah, K.; Khedr, M.; Farag, E.; Abd El‐Fattah, A.
Source:
Journal of applied microbiology 2021 v.130 no.3 pp. 819-831
ISSN:
1364-5072
Subject:
sodium hypochlorite,   etc   ; Clostridium perfringens; biofilm; chickens; genotype; genotyping; microbiology; multiple drug resistance; public health; toxins; virulence;     Show all 11 Subjects
Abstract:
... AIMS: This study aimed to determine the toxin genotypes, virulence determinants and antibiogram of Clostridium perfringens isolated from poultry, animals and humans. Biofilm formation and the efficacy of disinfectants on C. perfringens biofilms were studied. METHODS AND RESULTS: Thirty C. perfringens isolates (20 clinical and 10 from chicken carcasses) were genotyped by PCR and all isolates were g ...
DOI:
10.1111/jam.14838

16. The inactivation of bacteriophage MS2 by sodium hypochlorite in the presence of particles

Author:
Tang, Aixi; Bi, Xiaochao; Li, Xiaoxue; Li, Fei; Liao, Xiaobin; Zou, Jing; Sun, Wenjie; Yuan, Baoling
Source:
Chemosphere 2021 v.266 pp. 129191
ISSN:
0045-6535
Subject:
sodium hypochlorite,   etc   ; Microcystis aeruginosa; algae; bacteriophages; calcium; chlorine; disinfection; humic acids; kaolinite; pH; turbidity;     Show all 11 Subjects
Abstract:
... The inactivation of bacteriophage MS2 by sodium hypochlorite was investigated to understand the effect of solution chemistry on the disinfection efficacy in the presence of particles. Kaolinite and Microcystis aeruginosa (M. aeruginosa) were used as the models of inorganic and organic particles to simulate high turbidity and algal cells, respectively, in drinking water sources. In both particle-co ...
DOI:
10.1016/j.chemosphere.2020.129191

17. Ecological effects of wastewater treatment modifications on infauna communities off the coast of Orange County, California

Author:
Zhang, Junqian; Andrzejczyk, Nicolette; Tang, Danny; Sakamoto, Ken; Armstrong, Jeff; Schlenk, Daniel
Source:
The Science of the total environment 2021 v.754 pp. 142395
ISSN:
0048-9697
Subject:
sodium hypochlorite,   etc   ; Capitella; chlorination; chlorine; coasts; community health; environment; fauna; groundwater; pollution; sanitation; wastewater treatment; California;     Show all 13 Subjects
Abstract:
... The Orange County Sanitation District (OCSD) is a public agency that provides treatment of wastewater for residents in Orange County, California. The final effluent characteristics at OCSD have been altered in the last 18 years due to the ~20-fold increase of sodium hypochlorite usage for disinfecting waste streams from 2002 to 2010, implementation of the Ground Water Replenishment System (GWRS) i ...
DOI:
10.1016/j.scitotenv.2020.142395

18. Carioca bean starch upon synergic modification: characteristics and films properties

Author:
do Evangelho, Jarine A; Biduski, Barbara; da Silva, Wyller M F; de Mello El Halal, Shanise L; Lenhani, Gabriela C; Zanella Pinto, Vânia; Dias, Alvaro R G; da Rosa Zavareze, Elessandra
Source:
Journal of the science of food and agriculture 2021 v.101 no.1 pp. 253-261
ISSN:
0022-5142
Subject:
sodium hypochlorite,   etc   ; agriculture; amylose; beans; biodegradability; oxidation; permeability; synergism; temperature; tensile strength; viscosity; water vapor;     Show all 12 Subjects
Abstract:
... BACKGROUND: The use of damaged beans for starch isolation comprises an end‐use alternative for a product that is not accepted by the consumer. For that reason, isolation and modification of Carioca bean starch should be explored and evaluated as a suitable source for biodegradable material. The present study aimed to evaluate the synergism of physical and chemical modifications on Carioca bean sta ...
DOI:
10.1002/jsfa.10637

19. Reliability and Performance of Vinyl Lactam-Based Kinetic Hydrate Inhibitor Polymers after Treatment under a Range of Conditions

Author:
Kelland, Malcolm A.; Zhang, Qian; Dirdal, Erik G.; Mady, Mohamed F.
Source:
Energy & fuels 2021 v.35 no.2 pp. 1273-1280
ISSN:
1520-5029
Subject:
sodium hypochlorite,   etc   ; composite polymers; cooling; energy; heat; hydrogen peroxide; natural gas; pH; solvents; steel; ultrasonics;     Show all 11 Subjects
Abstract:
... Well-known kinetic hydrate inhibitors (KHIs) such as poly(N-vinylcaprolactam) (PVCap), poly(N-vinylpyrrolidone) (PVP), and 1:1 N-vinylcaprolactam:N-vinylpyrrolidone (VCap:VP) copolymer have been subjected to a range of treatments to determine their reliability and whether the treatment conditions could affect the KHI performance, both positively or negatively. This included thermal aging (at varyi ...
DOI:
10.1021/acs.energyfuels.0c03519

20. Inhibitory effects of Ca2+ on ammonium exchange by zeolite in the long-term exchange and NaClO–NaCl regeneration process

Author:
Zhou, Chuanting; An, Ying; Zhang, Wei; Yang, Dianhai; Tang, Jianguo; Ye, Jianfeng; Zhou, Zhen
Source:
Chemosphere 2021 v.263 pp. 128216
ISSN:
0045-6535
Subject:
sodium hypochlorite,   etc   ; ammonium; calcium; calcium carbonate; chemical composition; dose response; kinetics; models; sodium chloride; wastewater; zeolites;     Show all 11 Subjects
Abstract:
... The inhibitory effects of calcium ion (Ca²⁺) on ammonium (NH₄⁺) exchange by zeolite were investigated in the long-term exchange and sodium hypochlorite - sodium chloride (NaClO–NaCl) regeneration process, and alleviation measure was developed and validated in this study. The batch experiments indicated that NH₄⁺ removal efficiency, exchange kinetics and equilibrium isotherms were significantly dep ...
DOI:
10.1016/j.chemosphere.2020.128216