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On the importance of pH value in coagulation
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SYSNO ASEP 0502798 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the importance of pH value in coagulation Tvůrce(i) Načeradská, Jana (UH-J) SAI, ORCID, RID
Pivokonská, Lenka (UH-J) SAI, ORCID, RID
Pivokonský, Martin (UH-J) SAI, ORCID, RIDZdroj.dok. Journal of Water Supply Research and Technology. AQUA. - : IWA Publishing - ISSN 0003-7214
Roč. 68, č. 3 (2019), s. 222-230Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova coagulant dosage ; coagulation ; jar test ; pH optimization Vědní obor RIV DJ - Znečištění a kontrola vody Obor OECD Environmental sciences (social aspects to be 5.7) CEP GA18-14445S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UH-J - RVO:67985874 UT WOS 000469120000006 EID SCOPUS 85066048832 DOI 10.2166/aqua.2019.155 Anotace Many studies have overlooked the role of pH in optimizing coagulation. Herein, the authors emphasize the importance of pH value in coagulation during the production of drinking water. We investigate the influence of pH value on the surface charges and forms of coagulants and impurities intended for removal. A methodology is suggested for optimizing key parameters for efficient coagulation – coagulant dosage and pH value. The study points out that various optimal pH ranges are required for coagulation of specific impurities and their mixtures. For natural organic matter of both humic and algogenic origin, acidic pH values are favourable for their removal through charge neutralization mechanism. Algal cells are effectively coagulated at slightly acidic to neutral pH values due to interactions with coagulant hydroxide precipitates. Inorganic particles are eliminated preferably at around neutral pH values. When mixtures of impurities are coagulated, mutual interaction between the impurities may impact dose of coagulant and also optimal pH ranges. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2020 Elektronická adresa https://iwaponline.com/aqua/article-abstract/68/3/222/66759/On-the-importance-of-pH-value-in-coagulation?redirectedFrom=fulltext
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