微藻利用制氢废液生长及产油研究  

Study on the growth and oil production of chlorella utilizing hydrogen production effluent

作　　者：殷天名 李建瑞 任宏宇[1] 刘冰峰[1] YIN Tianming;LI Jianrui;REN Hongyu;LIU Bingfeng(Harbin Institute of Technology,Harbin 150000,China)

机构地区：[1]哈尔滨工业大学,哈尔滨150000

出　　处：《给水排水》2024年第S1期715-720,共6页Water & Wastewater Engineering

基　　金：国家自然科学基金(No.51978204);黑龙江省重点研发计划(2022ZX02C14)

摘　　要：研究旨在探索微藻在不同培养条件下利用制氢废液的生长和产油效能,以及其在水质改善方面的潜力。研究发现在制氢废液中补充添加氮源(NaNO_(3)或NH_(4)Cl)进一步提高了微藻的生长效率,生物量分别提升至1.54 g/L和1.71 g/L,同时COD去除率也分别达到了81.28%和86.01%。同时探讨初始pH值对微藻利用VFAs的影响。在pH 5.5至6.5的区间内,微藻展现出最佳的生长和VFAs利用效率,其中在pH 5.5时生物量达到最大值1.81 g/L,COD去除率高达94.38%,总氮去除率为85.47%。进一步分析pH对微藻产油能力的影响表明,在pH 4至7的范围内,pH 5为最佳产油环境,微藻生物量达到1.86 g/L,油脂含量最高为27%,并且COD去除率在此pH值下达到最高89.12%。本研究通过调节培养条件中的氮源和pH值来优化微藻的生长、油脂积累和资源利用效率,为微藻生物能源的生产提供了新的策略。This study aims to explore the growth and oil production efficiency of microalgae utilizing hydrogen production wastewater under different culture conditions,as well as their potential in water quality improvement.The study found that supplementing the hydrogen production wastewater with nitrogen sources(NaNO_(3) or NH_(4)Cl)further enhanced microalgal growth,with biomass increasing to 1.54 g/L and 1.71 g/L,respectively,and the COD removal rates reaching 81.28%and 86.01%respectively.The effect of initial pH on the utilization of VFAs by microalgae was also investigated.Within the pH range of 5.5 to 6.5,microalgae exhibited the best growth and VFA utilization efficiency,with the maximum biomass of 1.81 g/L achieved at pH 5.5,and the highest COD removal rate of 94.38%and total nitrogen removal rate of 85.47%.Further analysis of the effect of pH on the oil production capability of microalgae showed that at pH 5,within the range of pH 4 to 7,the optimal environment for oil production was established,with microalgal biomass reaching 1.86 g/L and the highest lipid content being 27%,while the COD removal rate peaked at 89.12%at this pH.The results of the study provide new strategies for the production of microalgal bioenergy,emphasizing the optimization of microalgal growth,lipid accumulation,and resource utilization efficiency by adjusting nitrogen sources and pH values in culture conditions.

关 键 词：VFAs 微藻生长 微藻产油 PH 

分 类 号：TU992[建筑科学—市政工程]