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引用本文:乔腾生,董训赞,黄力,余旭亚.Mg2+对糖蜜酒精废醪液培养单针藻(Monoraphidium sp.FXY-10)油脂合成的影响.海洋与湖沼,2019,50(5):1043-1049.
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Mg2+对糖蜜酒精废醪液培养单针藻(Monoraphidium sp.FXY-10)油脂合成的影响
乔腾生1, 董训赞1, 黄力2, 余旭亚1
1.昆明理工大学 生命科学与技术学院 昆明 650500;2.昆明冶金高等专科学校 昆明 650500
摘要:
为拓展糖蜜酒精废醪液(molasses wastewater,MW)综合利用途径,本实验研究了在MW中添加Mg2+对单针藻Monoraphidium sp.FXY-10生长和油脂含量影响,并考察了Mg2+对MW中总氮、总磷、化学需氧量(chemical oxygen demand,COD)的移除率。结果显示:当Mg2+浓度为800μmol/L时,微藻的生物量和油脂含量达到最高,为0.91g/L和59.58%,分别是对照组的1.62和1.26倍;CO2固定效率比对照增加了95.15%;总氮、总磷、COD的移除率分别达到88.37%、93.69%和87.98%。研究表明,适宜浓度的Mg2+可以促进MW中微藻生长和油脂含量的积累,将废水的处理和微藻油脂制备相结合,是微藻资源化利用的另一策略。
关键词:  糖蜜酒精废醪液  单针藻  Mg2+  油脂  化学需氧量(chemical oxygen demand,COD)
DOI:10.11693/hyhz20190300047
分类号:TK6
基金项目:国家自然科学基金项目,21766012号,21666012号。
EFFECT OF Mg2+ ON LIPID ACCMULATION BY MONORAPHIDIUM SP. FXY-10 IN MOLASSES WASTEWATER
QIAO Teng-Sheng1, DONG Xun-Zan1, HAUNG Li2, YU Xu-Ya1
1.Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China;2.Institute of Chemical Industry, Kunming Metallurgy College, Kunming 650500, China
Abstract:
To make use of molasses wastewater (MW) comprehensively for biofuel production, we studied the effect of exogenous Mg2+ in the MW on the biomass and lipid content in Monoraphidium sp. FXY-10, in which the removal rates of total nitrogen, total phosphorus and chemical oxygen demand (COD) in MW by microalgae were investigated. Results show that when Mg2+ at 800μmol/L, the biomass and lipid content of Monoraphidium sp. FXY-10 were 0.91g/L and 59.58%, which is 1.62 and 1.26-fold of the control group's, respectively. The fixed efficiency of CO2 increased by 95.15% from that of the control. Meanwhile, the removal rates of total nitrogen, total phosphorus, and COD from the MW reached 88.37%, 93.69%, and 87.98%, respectively. Therefore, Mg2+ addition could promotes the biomass and lipid production in microalgae in MW. Combining wastewater treatment with production of microalgae biodiesel provides a new strategy for the utilization of microalgae.
Key words:  molasses wastewater  Monoraphidium sp. FXY-10  Mg2+  lipid  chemical oxygen demand (COD)
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