期刊
WATER AIR AND SOIL POLLUTION
卷 204, 期 1-4, 页码 43-51出版社
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/s11270-009-0024-x
关键词
Airlift bioreactor; Candida; Cr(VI) reduction; Hexavalent chromium [Cr(VI)]; Pneumatic bioreactor
资金
- Secretar a de Investigacion y Posgrado, IPN
- CONACyT
The main purpose of this work was to conduct a kinetic study on cell growth and hexavalent chromium [Cr(VI)] removal by Candida sp. FGSFEP in a concentric draft-tube airlift bioreactor. The yeast was batch-cultivated in a 5.2-l airlift bioreactor containing culture medium with an initial Cr(VI) concentration of 1.5 mM. The maximum specific growth rate of Candida sp. FGSFEP in the airlift bioreactor was 0.0244 h(-1), which was 71.83% higher than that obtained in flasks. The yeast strain was capable of reducing 1.5 mM Cr(VI) completely and exhibited a high volumetric rate [1.64 mg Cr(VI) l(-1) h(-1)], specific rate [0.95 mg Cr(VI) g(-1) biomass h(-1)] and capacity [44.38 mg Cr(VI) g(-1) biomass] of Cr(VI) reduction in the airlift bioreactor, with values higher than those obtained in flasks. Therefore, culture of Candida sp. FGSFEP in a concentric draft-tube airlift bioreactor could be a promising technological alternative for the aerobic treatment of Cr(VI)-contaminated industrial effluents.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据