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Simultaneous removal of selenium and microbial contamination from drinking water using modified ferrihydrite-based adsorbent
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SYSNO ASEP 0576236 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Simultaneous removal of selenium and microbial contamination from drinking water using modified ferrihydrite-based adsorbent Author(s) Smržová, Darina (UACH-T) ORCID, SAI, RID
Ramteke, P. (IN)
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Šubrt, Jan (UACH-T) SAI, RID
Bezdička, Petr (UACH-T) SAI, RID, ORCID
Kubániová, D. (CZ)
Kormunda, M. (CZ)
Maršálek, R. (CZ)
Vislocká, Xénia (UACH-T) RID, SAI
Vykydalová, Anna (UACH-T)
Singh, S. K. (IN)
Wathore, R. (IN)
Shinde, V. M. (IN)
Labhasetwar, N. K. (IN)Number of authors 14 Article number 104337 Source Title Journal of Water Process Engineering. - : Elsevier - ISSN 2214-7144
Roč. 56, DEC (2023)Number of pages 17 s. Language eng - English Country NL - Netherlands Keywords E. coli ; Ferrihydrite samples ; Isotherm ; Selenium ; Zinc Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry R&D Projects LM2023066 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UACH-T - RVO:61388980 UT WOS 001092805800001 EID SCOPUS 85172458465 DOI 10.1016/j.jwpe.2023.104337 Annotation The ferrihydrite and modified ferrihydrite-based adsorbents were explored in the present study to remove selenate and bacterial contamination from drinking water. All the zinc-modified absorbents show >80 % bacterial count reduction, contrary to the unmodified adsorbents (30–40 % reduction). Ferrihydrite-based adsorbent modified with zinc (FH2–10) was the most efficient for selenate adsorption and exhibited the highest bactericidal activity. Sorption experiments showed that for Se (VI) concentration of 400 μg L−1, a sorbent dose of 0.5 g L−1 was sufficient to meet drinking water guidelines within the first 10 min. The maximum adsorption capacity of 40.984 mg/ g was obtained for FH2–10. The regeneration and reuse studies show that the selenium removal efficiency retained was >85 % even after three consecutive adsorption-desorption cycles. Column adsorption studies were performed to assess the adsorbent's field applicability, which inferred the adsorption capacity of 1.3 mg/ g. The FH2–10 adsorbent also showed >95 % bacterial growth reduction against E. coli. Hence the present detailed studies infer that FH2–10 is an efficient material for the simultaneous removal of selenium and bacterial contamination from drinking water, with potential for field application if the sulfate co-ions are not present in higher concentrations. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2024 Electronic address https://doi.org/10.1016/j.jwpe.2023.104337
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