selective cultivation of easily harvestable algae using crossflow-microscreening
The implementation of algal systems as a viable wastewater treatment option has been seriously limited by the availability of cost effective techniques for removing algae from the effluent stream. In this study, the problem of biomass separation was overcome by the selective cultivation of algae spe...
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| Veröffentlicht in: | Water science and technology 1985-01, Vol.17 (4/5), p.791-802 |
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| container_title | Water science and technology |
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| creator | Pretorius, W.A Hensman, L.C |
| description | The implementation of algal systems as a viable wastewater treatment option has been seriously limited by the availability of cost effective techniques for removing algae from the effluent stream. In this study, the problem of biomass separation was overcome by the selective cultivation of algae species which could be removed effectively by simple screening. The selection of desired species was achieved by a combination of short hydraulic space time and various size micro-screens operating as algae selectors on the effluent stream. A high rate algae growth system, in which the mean cell residence time and hydraulic space time could be manipulated independently, was developed.
With humus tank effluent as feedstock, a hydraulic space time of 10 hours and a 200 µm opening size crossflow-microscreen, the filamentous green algae, Stigeoclonium, became the dominant species. This selected culture could be readily maintained at any predetermined concentration in the system with less than 20 mg/ℓ suspended solids in the effluent. The biomass produced was exceptionally easy to harvest. |
| doi_str_mv | 10.2166/wst.1985.0180 |
| format | Article |
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With humus tank effluent as feedstock, a hydraulic space time of 10 hours and a 200 µm opening size crossflow-microscreen, the filamentous green algae, Stigeoclonium, became the dominant species. This selected culture could be readily maintained at any predetermined concentration in the system with less than 20 mg/ℓ suspended solids in the effluent. The biomass produced was exceptionally easy to harvest.</description><identifier>ISSN: 0273-1223</identifier><identifier>EISSN: 1996-9732</identifier><identifier>DOI: 10.2166/wst.1985.0180</identifier><language>eng</language><publisher>London: IWA Publishing</publisher><subject>Algae ; Algae harvesting ; algal cultures ; Aquatic plants ; Biomass ; Cell culture ; Cultivation ; Decomposing organic matter ; Dominant species ; Effluent streams ; Effluents ; harvesting ; Humus ; Hydraulics ; Residence time ; Rivers ; screening ; Screens ; Selectors ; Stigeoclonium ; Suspended particulate matter ; Suspended solids ; Wastewater ; Wastewater treatment</subject><ispartof>Water science and technology, 1985-01, Vol.17 (4/5), p.791-802</ispartof><rights>Copyright IWA Publishing Apr 1985</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c318t-d9555a2d3f2c7a6a47260cb92b0c5760934e6740040c695c5187bc780cfe9923</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids></links><search><creatorcontrib>Pretorius, W.A</creatorcontrib><creatorcontrib>Hensman, L.C</creatorcontrib><title>selective cultivation of easily harvestable algae using crossflow-microscreening</title><title>Water science and technology</title><description>The implementation of algal systems as a viable wastewater treatment option has been seriously limited by the availability of cost effective techniques for removing algae from the effluent stream. In this study, the problem of biomass separation was overcome by the selective cultivation of algae species which could be removed effectively by simple screening. The selection of desired species was achieved by a combination of short hydraulic space time and various size micro-screens operating as algae selectors on the effluent stream. A high rate algae growth system, in which the mean cell residence time and hydraulic space time could be manipulated independently, was developed.
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In this study, the problem of biomass separation was overcome by the selective cultivation of algae species which could be removed effectively by simple screening. The selection of desired species was achieved by a combination of short hydraulic space time and various size micro-screens operating as algae selectors on the effluent stream. A high rate algae growth system, in which the mean cell residence time and hydraulic space time could be manipulated independently, was developed.
With humus tank effluent as feedstock, a hydraulic space time of 10 hours and a 200 µm opening size crossflow-microscreen, the filamentous green algae, Stigeoclonium, became the dominant species. This selected culture could be readily maintained at any predetermined concentration in the system with less than 20 mg/ℓ suspended solids in the effluent. The biomass produced was exceptionally easy to harvest.</abstract><cop>London</cop><pub>IWA Publishing</pub><doi>10.2166/wst.1985.0180</doi><tpages>12</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0273-1223 |
| ispartof | Water science and technology, 1985-01, Vol.17 (4/5), p.791-802 |
| issn | 0273-1223 1996-9732 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_13829621 |
| source | EZB Electronic Journals Library |
| subjects | Algae Algae harvesting algal cultures Aquatic plants Biomass Cell culture Cultivation Decomposing organic matter Dominant species Effluent streams Effluents harvesting Humus Hydraulics Residence time Rivers screening Screens Selectors Stigeoclonium Suspended particulate matter Suspended solids Wastewater Wastewater treatment |
| title | selective cultivation of easily harvestable algae using crossflow-microscreening |
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