Počet záznamů: 1
Ozonation and coagulation of non-proteinaceous algal organic matter
- 1.
SYSNO ASEP 0542420 Druh ASEP A - Abstrakt Zařazení RIV O - Ostatní Název Ozonation and coagulation of non-proteinaceous algal organic matter Tvůrce(i) Prokopová, Michaela (UH-J) ORCID, RID, SAI
Novotná, Kateřina (UH-J) SAI, ORCID, RID
Pivokonská, Lenka (UH-J) SAI, ORCID, RID
Pivokonský, Martin (UH-J) SAI, ORCID, RIDZdroj.dok. Book of abstracts. Water research and innovations in digital era. - Riga : Riga Technical Universtiy, 2021 / Feierabend, M. ; Juhna T. ; Dejus S. - ISBN 978-9934-22-618-2
S. 94-95Poč.str. 2 s. Forma vydání Tištěná - P Akce Eastern European Young Water Professionals Conference /12./ Datum konání 31.03.2021 - 02.04.2021 Místo konání Riga Země LV - Lotysško Typ akce WRD Jazyk dok. eng - angličtina Země vyd. LV - Lotysško Klíč. slova algal organic matter ; alum coagulation ; ozonation ; drinking water treatment Vědní obor RIV DJ - Znečištění a kontrola vody Obor OECD Environmental sciences (social aspects to be 5.7) Institucionální podpora UH-J - RVO:67985874 Anotace This research examines pre-ozonation-coagulation and coagulation-post-ozonation of AOM, specifically its non-proteinaceous fraction (NP). O3 doses of 0.05–4.0 mg per 5 mg dissolved organic carbon were applied at pH 5.5, 7.8, and 9.0, coagulation was performed in pH range 5.0–9.0. Coagulation alone exhibited maximum removal of 15%, and pre-ozonation before coagulation had different impacts depending on both the O3 dose and ozonation pH. In case of pH 5.5 and 7.8, the lowest and highest O3 doses improved the removal (by max. 7%), by contrast, the medium O3 dose deteriorated coagulation. In case of pH 9.0, at which different oxidation pathways predominate, the low and medium O3 doses had negligible effects, while the highest O3 dose improved NP removal (by max. 11%). Post-ozonation after coagulation contributed to NP removal (additional 5–6%) at the highest O3 dose. In general, positive effects of ozonation were ascribed to charge alterations and partial mineralization of NP, adverse effects to changes in molecular weights. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2022
Počet záznamů: 1