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Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates
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SYSNO ASEP 0504018 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates Author(s) Leite, LS. (BR)
Daniel, LA. (BR)
Pivokonský, Martin (UH-J) SAI, ORCID, RID
Novotná, Kateřina (UH-J) SAI, ORCID, RID
Brányiková, Irena (UCHP-M) RID, ORCID, SAI
Brányik, T. (CZ)Article number 121352 Source Title Bioresource Technology. - : Elsevier - ISSN 0960-8524
Roč. 286, August (2019)Number of pages 7 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords alkaline flocculation ; Chlorella sorokiniana ; wastewater ; interfering compounds Subject RIV DJ - Water Pollution ; Quality OECD category Environmental sciences (social aspects to be 5.7) Subject RIV - cooperation Institute of Chemical Process Fundamentals - Industrial Chemistry, Chemical Engineering R&D Projects GA18-05007S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UH-J - RVO:67985874 ; UCHP-M - RVO:67985858 UT WOS 000468297700001 EID SCOPUS 85064662961 DOI 10.1016/j.biortech.2019.121352 Annotation Amongst harvesting processes, alkaline flocculation stands out as a technically feasible and low cost method. The interference of model wastewater components with alkaline flocculation of Chlorella sorokiniana (pH 8-12), induced by calcium phosphate (CaP) precipitates, was evaluated. Between the compounds tested, inorganic nitrogen, sodium alginate, salinity and algal organic matter had no effect on flocculation efficiency (FE). The negative effect of humic acids, sodium dodecyl sulphate and alkalinity on FE was partial. Bovine serum albumin and bacterial organic matter (BOM) of Escherichia coli showed the strongest disruption of FE. The impact of BOM can be explained by the high protein content (65% of total organic carbon). Proteins, negatively charged at alkaline pH, interrupt microalgae flocculation by preferentially interacting with positively charged CaP precipitates. The simultaneous effects of multiple substances were tested to simulate real wastewater. The results confirm the need to investigate the composition of wastewater prior to alkaline flocculation. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2020 Electronic address https://www.sciencedirect.com/science/article/pii/S0960852419305747?via%3Dihub
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