| Removal of algae using froth flotation. | |
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MedLine Citation:
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PMID: 12641256 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This paper describes the removal of algae and attached water using a froth flotation method as a function of the collector type, aeration rates, the pH of the algal suspension and temperature of operation. Dispersed air flotation was used in this study to remove Scenedesmus quadricaudo. The addition of surfactants such as cetyltrimethylammonium bromide and sodium dodecylsulfate increased the aeration rates and reduced the size of air bubbles. Only cetyltrimethylammonium bromide gave high algal removal (90%) whereas sodium dodecylsulfate gave poor algal removal (16%). However, by decreasing the pH values of the algal suspension, it was possible to increase the algal removal efficiency up to 80%. Low temperature operation had an important effect on reducing the rate of algal removal but when the temperature was 20 degrees C or higher there was little change with further temperature rises. The amount of water removed with the algal phase was reduced by using a two-stage flotation process. |
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Authors:
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W Phoochinda; D A White |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Environmental technology Volume: 24 ISSN: 0959-3330 ISO Abbreviation: Environ Technol Publication Date: 2003 Jan |
Date Detail:
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Created Date: 2003-03-18 Completed Date: 2003-05-20 Revised Date: 2007-03-21 |
Medline Journal Info:
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Nlm Unique ID: 9884939 Medline TA: Environ Technol Country: England |
Other Details:
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Languages: eng Pagination: 87-96 Citation Subset: IM |
Affiliation:
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Department of Chemical Engineering, Faculty of Engineering, Imperial College of Science, Technology and Medicine, London SW7 2BY, United Kingdom. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Algae, Green
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isolation & purification* Hydrogen-Ion Concentration Surface-Active Agents / chemistry Temperature Water Microbiology Water Purification / methods* |
| Chemical | |
Reg. No./Substance:
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0/Surface-Active Agents |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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