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KMID : 0380020140290030220
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Korean Journal of Biotechnology and Bioengineering
2014 Volume.29 No. 3 p.220 ~ p.224
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Optimization of Spirogyra Flocculation Using Polyaluminium Chloride
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Baek Jae-Won
Choi Jong-Il
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Abstract
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Flocculation is known one of the effective methods for harvesting microalgae. This study was aimed to optimize the flocculation condition for decreasing the amounts of flocculant and obtaining the highest yield of algal biomass. To achieve this goal, it was optimized the flocculant concentration, reaction pH and the concentration of cell density for harvest using response surface methodology (RSM). The flocculation of microalgae, Spirogyra varians, was carried out using inorganic flocculant polyaluminium chloride. By the RSM result, the optimal flocculation condition was calculated 5 ppm of polyaluminum chloride, pH 7.5 and 0.33 of optical cell density at OD640. The obtained recovery yield of S. varians was 97.6% at the optimal condition.
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KEYWORD
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Microalgae, Flocculation, Response surface methodology
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