Journal ArticleDOI
A mini review of preoxidation to improve coagulation.
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TLDR
The mechanisms, drawbacks and applications in the improvement of coagulation were summarized in this work and some future developments of preoxidation process were suggested.About:
This article is published in Chemosphere.The article was published on 2016-07-01. It has received 108 citations till now. The article focuses on the topics: Coagulation (water treatment).read more
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Journal ArticleDOI
Comparative study on the pretreatment of algae-laden water by UV/persulfate, UV/chlorine, and UV/H2O2: Variation of characteristics and alleviation of ultrafiltration membrane fouling
Ying Wan,Pengchao Xie,Pengchao Xie,Zongping Wang,Jiaqi Ding,Jingwen Wang,Songlin Wang,Mark R. Wiesner +7 more
TL;DR: UV/PS and UV/H2O2 pretreatments were effective in the degradation of fluorescent compounds, thus reducing the deposition of organic matter on the membrane surface, and aggravated irreversible fouling after UV/chlorine pretreatment was probably ascribed to the increased accumulation of hydrophobic fractions in the membrane pores.
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The impact of pre-oxidation with potassium permanganate on cyanobacterial organic matter removal by coagulation.
Jana Naceradska,Martin Pivokonsky,Martin Pivokonsky,Lenka Pivokonska,Magdalena Baresova,Rita K. Henderson,Arash Zamyadi,Vaclav Janda +7 more
TL;DR: The study showed that carefully optimized dosing of permanganate improves cyanobacterial peptide/protein removal, with the benefit of microcystin elimination, as well as preventing the formation of Fe-peptide/ protein complexes that inhibit coagulation at pH about 6.2 without pre-oxidation.
Journal ArticleDOI
Application of Fe(II)/peroxymonosulfate for improving ultrafiltration membrane performance in surface water treatment: Comparison with coagulation and ozonation.
Xiaoxiang Cheng,Heng Liang,An Ding,Xuewu Zhu,Xiaobin Tang,Zhendong Gan,Jiajian Xing,Daoji Wu,Guibai Li +8 more
TL;DR: The results showed that the Fe(II)/PMS-UF system exhibited the best performance for dissolved organic carbon removal, likely due to the dual functions of coagulation and oxidation in the single process.
Journal ArticleDOI
UV/persulfate preoxidation to improve coagulation efficiency of Microcystis aeruginosa.
TL;DR: It is suggested that UV/PS might be a potential pretreatment process to assist coagulation on the removal of algae and optimal PS dose and UV dose were proposed to exist in this study.
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Impacts of pre-oxidation on the formation of disinfection byproducts from algal organic matter in subsequent chlor(am)ination: A review.
TL;DR: A comprehensive review on the impacts of pre-oxidation on the formation of DBPs from AOM in subsequent chlor(am)ination and identifies future research demands.
References
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Occurrence, genotoxicity, and carcinogenicity of regulated and emerging disinfection by-products in drinking water: a review and roadmap for research.
TL;DR: The brominated DBPs were the most genotoxic of all but have not been tested for carcinogenicity and highlighted the emerging importance of dermal/inhalation exposure to the THMs, or possibly other DBPs, and the role of genotype for risk for drinking-water-associated bladder cancer.
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Ozonation of drinking water: part I. Oxidation kinetics and product formation.
TL;DR: The second-order rate constants for oxidation by ozone vary over 10 orders of magnitude, between o 0.1 M 1 s 1 s -1 and about 7 − 10 9 M 1 S -1 s - 1 s − 1 as discussed by the authors.
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Reactions of chlorine with inorganic and organic compounds during water treatment—Kinetics and mechanisms: A critical review
TL;DR: Comparison of chlorine to ozone reactivity towards aromatic compounds (electrophilic attack) shows a good correlation, with chlorine rate constants being about four orders of magnitude smaller than those for ozone.
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Ozonation of drinking water: part II. Disinfection and by-product formation in presence of bromide, iodide or chlorine.
TL;DR: In this paper, it was shown that ozone is an excellent disinfectant and can even be used to inactivate microorganisms such as protozoa which are very resistant to conventional disinfectants.
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The toxins of cyanobacteria.
TL;DR: On May 2, 1878, George Francis of Adelaide, Australia, published the first scholarly description of the potentially lethal e-ects produced by cyanobacteria, sometimes called blue-green algae or, more colloquially, pond scum.