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Investigating adsorption of model low-MW AOM components onto different types of activated carbon – influence of temperature and pH value
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SYSNO ASEP 0531898 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Investigating adsorption of model low-MW AOM components onto different types of activated carbon – influence of temperature and pH value Author(s) Čermáková, Lenka (UH-J) RID, ORCID, SAI
Fialová, Kateřina (UH-J) ORCID, SAI, RID
Kopecká, Ivana (UH-J) SAI, RID, ORCID
Barešová, Magdalena (UH-J) RID, ORCID, SAI
Pivokonský, Martin (UH-J) SAI, ORCID, RIDSource Title Environmental Technology. - : Taylor & Francis - ISSN 0959-3330
Roč. 43, č. 8 (2022), s. 1152-1162Number of pages 11 s. Publication form Online - E Language eng - English Country GB - United Kingdom Keywords adsorption ; algal organic matter ; amino acid ; temperature ; water treatment Subject RIV DJ - Water Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) Method of publishing Limited access Institutional support UH-J - RVO:67985874 UT WOS 000570284200001 EID SCOPUS 85091071663 DOI 10.1080/09593330.2020.1820082 Annotation Low molecular weight algal organic matter (AOM), as a frequent water contaminant with poor coagulation efficiency, adversely affects the quality of produced water and serves as a source of potentially carcinogenic disinfection by-products. AOM removal from water is inevitable to eliminate the negative health and environmental impacts. This research evaluates the removal of arginine, phenylalanine and aspartic acid, which are amino acids abundant in AOM. Adsorption experiments were performed at 10, 18 and 25 °C and pH 5, 7 and 9 using two different activated carbons (FTL, PIC). Amino acids showed endothermic adsorption behaviour, with a higher removal at higher temperature. Higher temperature increased the diffusion of amino acid molecules, reduced the solution viscosity, or enhanced the hydrophobic interactions contributing to adsorption. The effect of temperature manifested differently during experiments depending on the chemical nature of the amino acids, the pH value and the surface properties of the carbon. Phenylalanine isotherms showed specific waves (Langmuir type 4). pH had a greater effect on arginine adsorption than did temperature. Aspartic acid isotherms exhibited a decrease in adsorption at higher pH values and higher temperatures. The principal mechanisms involved in amino acid adsorption were hydrophobic interactions, electrostatic interactions or hydrogen bonds. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2023 Electronic address https://www.tandfonline.com/doi/full/10.1080/09593330.2020.1820082
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