Enhanced biofuel production from high-concentration bioethanol wastewater by a newly isolated heterotrophic microalga, Chlorella vulgaris LAM-Q

BioChem - DOS

Search

메타 데이터

바이오화학분류

- 바이오정밀화학
  1. 용매
  2. 화학제품
  3. 기타
- 화장품용 기능성소재
  1. 향수
  2. 계면활성제⁄증점제
- 의료용 화학소재
  1. 치료제
  2. 식품첨가제

논문

Enhanced biofuel production from high-concentration bioethanol wastewater by a newly isolated heterotrophic microalga, Chlorella vulgaris LAM-Q

학술지

Journal of microbiology and biotechnology

저자명

Xie, Tonghui; Liu, Jing; Du, Kaifeng; Liang, Bin; Zhang, Yongkui

초록

Microalgal biofuel production from wastewater has economic and environmental advantages. This article investigates the lipid production from high chemical oxygen demand (COD) bioethanol wastewater without dilution or additional nutrients, using a newly isolated heterotrophic microalga, Chlorella vulgaris LAM-Q. To enhance lipid accumulation, the combined effects of important operational parameters were studied via response surface methodology. The optimal conditions were found to be temperature of <TEX>$22.8^{\circ}C$</TEX>, initial pH of 6.7, and inoculum density of <TEX>$1.2{\times}10^8cells/ml$</TEX>. Under these conditions, the lipid productivity reached 195.96 mg/l/d, which was markedly higher than previously reported values in similar systems. According to the fatty acid composition, the obtained lipids were suitable feedstock for biodiesel production. Meanwhile, 61.40% of COD, 51.24% of total nitrogen, and 58.76% of total phosphorus were removed from the bioethanol wastewater during microalgal growth. In addition, 19.17% of the energy contained in the wastewater was transferred to the microalgal biomass in the fermentation process. These findings suggest that C. vulgaris LAM-Q can efficiently produce lipids from high-concentration bioethanol wastewater, and simultaneously performs wastewater treatment.

발행연도

2013

발행기관

The Korean Society for Microbiology and Biotechnology

ISSN

1017-7825

ISSN

1738-8872

권

호

페이지

pp.1460-1471