Is Electrocoagulation a Promising Technology for Algal Organic Matter Removal? Current Knowledge and Open Questions

Author:

Krusinova Zuzana12,Prokopova Michaela12,Krystynik Pavel13,Kluson Petr24,Pivokonsky Martin1ORCID

Affiliation:

1. Institute of Hydrodynamics of the Czech Academy of Sciences Pod Patankou 30/5 166 00 Prague 6 Czech Republic

2. Charles University Institute for Environmental Studies, Faculty of Science Benatska 2 128 01 Prague 2 Czech Republic

3. University of J. E. Purkyne Faculty of Environment Pasteurova 3632/15 400 96 Usti nad Labem Czech Republic

4. Institute of Chemical Process Fundamentals of the Czech Academy of Sciences Rozvojova 135 165 02 Prague 6 Czech Republic

Abstract

AbstractElectrocoagulation (EC) is a practical alternative to chemical coagulation for the treatment of drinking water that contains various pollutants, including humic substances. Nevertheless, the performance of EC for removal of algal organic matter (AOM) is still largely unexplored. In this review, the properties of AOM, the principles of chemical coagulation and EC, and the current state of knowledge on the coagulation of AOM have been outlined. The limited available literature on the EC of AOM is critically reviewed and let conclude that this is a promising technology for AOM removal. However, the studies on EC are inconsistent in their approaches, and they lack thorough optimization of operating conditions (resultant pH, coagulant dosing) and reports of residual metal concentrations. Some of the identified needs for future research include the complete optimization of EC for AOM removal, its direct comparison with chemical coagulation, and EC testing for the elimination of mixtures of AOM, humic substances, and inorganic particles.

Funder

Akademie Věd České Republiky

Publisher

Wiley

Subject

Industrial and Manufacturing Engineering,Filtration and Separation,Process Chemistry and Technology,Biochemistry,Chemical Engineering (miscellaneous),Bioengineering

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