Removal of cyanobacteria from synthetic and real water by dielectric barrier discharge process
| Autor: | Stephanie Ting Yu Chew, Shu Harn Te, Tuti Mariana Lim, Yi Zhang |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Chlorophyll
Cyanobacteria Salinity Chlorophyll a Health Toxicology and Mutagenesis Fresh Water Dielectric barrier discharge Biology Cell morphology Water Purification chemistry.chemical_compound Environmental Chemistry Ecotoxicology Total organic carbon Chlorophyll A Environmental engineering Parts-per notation Water General Medicine biology.organism_classification Pollution chemistry Environmental chemistry Feasibility Studies Water Microbiology |
| Zdroj: | Environmental Science and Pollution Research. 22:18967-18976 |
| ISSN: | 1614-7499 0944-1344 |
| Popis: | The feasibility of cyanobacteria removal from freshwater by a dielectric barrier discharge (DBD) process is investigated. Seven commercial and environmental cyanobacteria strains, as well as real algae-laden water, were tested. The removal of the cyanobacteria was evaluated by analyzing the changes in chlorophyll a content, total organic carbon (TOC) concentration, and cell morphology. Nearly total removal of chlorophyll a was achieved within 20 min, while the TOC analysis exhibited an increase-decrease-increase trend in 60 min of treatment, likely due to the oxidation of intracellular and intercellular materials. Observation under light microscopy revealed the disruption of intracellular and intercellular structures within 5 min of DBD treatment and thus supported the TOC analysis. Increasing the salinity of the medium from 0 to 5 parts per thousand (ppt) improved treatment efficiency, where similar level of chlorophyll a removal (around 93%) was achieved in only half the treatment time. Application of DBD on real algae-laden water from a fish farm yielded higher treatment efficiency than in synthetic medium, indicating the promising application of DBD as a means to control cyanobacteria bloom in fresh and estuary water bodies. |
| Databáze: | OpenAIRE |
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