Moringa oleifera seed derivatives as potential bio-coagulant for environmentally microalgae chlorella sp. harvesting

Endut, Azizah (2015) Moringa oleifera seed derivatives as potential bio-coagulant for environmentally microalgae chlorella sp. harvesting. In: Unisza Research Conference, 14-16 april 2015, Gong Badak Campus, UniSZA, Terengganu.

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Microalgae is an economical and potential raw material of biomass energy, which offer a wide range of potential commercial to produce valuable substances for applications in pharmaceutical purposes and biofuels production. Recent studies have demonstrated microalgae has been widely used in fish feeds due to its substantial content of high quality proteins. However, lack of of an economical, efficient and convenient method to harvest microalgae is a bottleneck to boost their full-scale application. Hence, this study is proposed to investigate the potentialities of Moringa oleifera (MO) seed derivatives as an environmentally bio-coagulant to harvest microalgae Chlorella sp. biomass from the water column, which acts as a binder to coagulate particulate impurities to form larger aggregates. The determination of the zeta potential (ZP) of microalgae-flocculant suspension and the flocculation performance was carried out. MO seed derivatives were found to have better biomass recovery of 122.51% as compared to 37.08% of alum at similar dosages of 10 mg L-1. In addition, it was found that the zeta potential values of mixed microalgae-coagulant suspension shows positive correlation on the flocculation parameters. For biomass recovery, the correlation for MO protein powder showed the R2-value of 0.9565 whereas the control chemical flocculant, alum with the R2-value of 0.7920. The Zeta potential study will enhance on the mechanism and rapid optimization of bio-flocculant for application in microalgae biomass harvesting. MO has a great potential in high-efficient and economical for environmentally microalgae harvesting and the adaptation of biological harvesting technology especially for the purpose of aquaculture feed Malaysia.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > Q Science (General)
Faculty / Institute: East Coast Environmental Research Institute (ESERI)
Depositing User: AP DR AZIZAH ENDUT
Date Deposited: 01 Nov 2015 03:23
Last Modified: 01 Nov 2015 03:23

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