Kim Ga-Yeong, Yun Yeo-Myeong, Shin Hang-Sik, Kim Hee-Sik, Han Jong-In
Department of Civil and Environmental Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea.
College of Agriculture, Forestry and Natural Resource Management, University of Hawaii at Hilo, 200 W. Kawili St., Hilo, HI 96720, United States.
Bioresour Technol. 2015 Nov;196:235-40. doi: 10.1016/j.biortech.2015.07.091. Epub 2015 Jul 29.
In this study, a microalgae-based technology was employed to treat wastewater and produce biodiesel at the same time. A local isolate Scenedesmus sp. was found to be a well suited species, particularly for an effluent from anaerobic digester (AD) containing low carbon but high nutrients (NH3-N=273mgL(-1), total P=58.75mgL(-1)). This algae-based treatment was quite effective: nutrient removal efficiencies were over 99.19% for nitrogen and 98.01% for phosphorus. Regarding the biodiesel production, FAME contents of Scenedesmus sp. were found to be relatively low (8.74% (w/w)), but overall FAME productivity was comparatively high (0.03gL(-1)d(-1)) due to its high biomass productivity (0.37gL(-1)d(-1)). FAMEs were satisfactory to the several standards for the biodiesel quality. The Scenedesmus-based technology may serve as a promising option for the treatment of nutrient-rich wastewater and especially so for the AD effluent.
在本研究中，采用了一种基于微藻的技术来同时处理废水和生产生物柴油。发现一种本地分离的栅藻属物种是非常合适的，特别是对于来自厌氧消化器（AD）的含有低碳但高营养物质（NH₃-N = 273mgL⁻¹，总磷 = 58.75mgL⁻¹）的废水。这种基于藻类的处理方法非常有效：氮的营养去除效率超过99.19%，磷的去除效率为98.01%。关于生物柴油生产，发现栅藻属的脂肪酸甲酯（FAME）含量相对较低（8.74%（w/w）），但由于其高生物量生产率（0.37gL⁻¹d⁻¹），总体FAME生产率相对较高（0.03gL⁻¹d⁻¹）。FAME符合生物柴油质量的多项标准。基于栅藻的技术可能是处理富营养废水的一个有前途的选择，特别是对于厌氧消化器废水而言。
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