Optimization of biomass harvesting of microalgae, Chlorella sp. utilizing auto-flocculating microalgae, Ankistrodesmus sp. as bio-flocculant

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dc.contributor.authorFathurrahman Lananan
dc.contributor.authorFareza Hanis Mohd Yunos
dc.contributor.authorNurfarahana Mohd Nasir
dc.contributor.authorNur Syuhada Abu Bakar
dc.contributor.authorSu Shiung Lam
dc.contributor.authorAhmad Jusoh
dc.date.accessioned2017-04-11T03:13:12Z
dc.date.available2017-04-11T03:13:12Z
dc.date.issued2016
dc.description.abstractCurrent microalgae harvesting technology depends on sophisticated and complex approaches such as hollow fiber filtration, chemical flocculants and centrifugation, which are deemed feasible if high value products were obtained. In this study the potential of auto-flocculating microalgae Ankistrodesmus sp. was examined for its potential as bio-flocculant to harvest Chlorella sp. Zeta Potential Analysis was performed on the microalgae in the pH range of 4.16e9.55 before subjecting the microalgae to the coagulation e flocculation assay. The isoelectric point of microalgae suspension was observed in the range of pH 5e8 and the magnitude of zeta potentials ranged between 10 mv to 35 mV. Ankistrodesmus sp. was inoculated at a dosage of 50% (v/v) into a batch of Chlorella sp. culture during the coagulation e flocculation assay. The removal efficiency shown by Ankistrodesmus sp. was 82% at pH 7.1 followed by 55% at pH 6.2. Utilizing Ankistrodesmus sp. for flocculation was efficient since it did not require any changes of pH because isoelectric point was observed within the normal pH of Chlorella sp. growth condition. Development of innovative microalgae treatment technology incorporating continuous bio-harvesting with microalgae-microalgae flocculation could provide a low-cost and sustainable wastewater treatment approach. In addition, the use of microalgae itself to harvest microalgae biomass harvesting could simplify downstream processing, saving resources and would reduce the production cost for future microalgae-based technology.en_US
dc.identifier.citationVol.113; 391-396 p.en_US
dc.identifier.issn9648305
dc.identifier.urihttp://hdl.handle.net/123456789/5657
dc.language.isoenen_US
dc.publisherInternational Biodeterioration and Biodegradationen_US
dc.subjectMicroalgaeen_US
dc.subjectHarvestingen_US
dc.subjectAuto-flocculatingen_US
dc.subjectChlorella sp.en_US
dc.subjectAnkistrodesmus sp.en_US
dc.titleOptimization of biomass harvesting of microalgae, Chlorella sp. utilizing auto-flocculating microalgae, Ankistrodesmus sp. as bio-flocculanten_US
dc.typeArticleen_US
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