High pH-induced flocculation-sedimentation and effect of supernatant reuse on growth rate and lipid productivity of Scenedesmus obliquus and Chlorella vulgaris

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메타 데이터

바이오화학분류

- 바이오정밀화학
  1. 용매
  2. 화학제품
- 화장품용 기능성소재
  1. 기능성
  2. 계면활성제⁄증점제
- 의료용 화학소재
  1. 건강보조식품
  2. 식품첨가제

논문

High pH-induced flocculation-sedimentation and effect of supernatant reuse on growth rate and lipid productivity of Scenedesmus obliquus and Chlorella vulgaris

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Castrillo, M.; Lucas-Salas, L.M.; Rodriguez-Gil, C.; Martinez, D.

초록

High pH-induced flocculation-sedimentation of Scenedesmus obliquus and Chlorella vulgaris was studied with the objective of improving the efficiency of microalgae harvesting, since it is one of the most expensive steps of production of microalgae. Desired pH values were achieved by addition of NaOH and Ca(OH)2. Growth rate and lipid productivity in fresh media prepared with tap water and with analytical-grade water, and in reused media prepared with culture centrifuged supernatant and the supernatant from high pH-induced flocculation-sedimentation were compared. Since the growth rates for reused media were about 1.7 times higher than in fresh media, and the lipid productivities were about 25 and 26mgL-1d-1 in flocculated and centrifuged reused media respectively, medium reuse is a suitable method of saving water and nutrients.

발행연도

2013

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

128

페이지

pp.324-329

DOI

10.1016/j.biortech.2012.10.114