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Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor: A pilot-scale harvesting study.
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SYSNO ASEP 0555589 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor: A pilot-scale harvesting study. Author(s) Lucáková, Simona (UCHP-M) RID, ORCID, SAI
Brányiková, Irena (UCHP-M) RID, ORCID, SAI
Kováčiková, Sára (UCHP-M)
Masojídek, Jiří (MBU-M) RID, ORCID
Ranglová, Karolína (MBU-M) ORCID
Brányik, T. (CZ)
Růžička, Marek (UCHP-M) RID, ORCID, SAIArticle number 126996 Source Title Bioresource Technology. - : Elsevier - ISSN 0960-8524
Roč. 351, May 2022 (2022)Number of pages 8 s. Language eng - English Country NL - Netherlands Keywords electrocoagulation ; electroflocculation ; chlorella ; microalgae OECD category Industrial biotechnology R&D Projects TJ01000297 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Open access with time embargo (01.06.2024) Institutional support UCHP-M - RVO:67985858 ; MBU-M - RVO:61388971 UT WOS 000841154500012 EID SCOPUS 85126467641 DOI 10.1016/j.biortech.2022.126996 Annotation The most frequently used method to harvest microalgae on an industrial scale is centrifugation, although this has very high energy costs. To reduce these costs, a continuous electrocoagulation process for harvesting Chlorella vulgaris was developed and tested using a pilot-scale 111 L working volume device consisting of an electrolyser with iron electrodes, aggregation channel and lamellar settler. The flow rate of the microalgal suspension through the device was 240 L/h. When using controlled cultivation and subsequent electrocoagulation, a high harvesting efficiency (above 85%), a low Fe contamination in the harvested biomass (<4 mg Fe/g dry biomass, a harvested biomass complied with legislative requirements for food) and significant energy savings were ach ieved. When comparing electrocoagulation and subsequent centrifugation with the use of centrifugation alone, energy savings were 80 % for a biomass harvesting concentration of 0.23 g/L. Electrocoagulation was thus proven to be a feasible pre-concentration method for harvesting microalgae. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2023 Electronic address http://hdl.handle.net/11104/0330074
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