Strategic enhancement of algal biomass, nutrient uptake and lipid through statistical optimization of nutrient supplementation in coupling Scenedesmus obliquus-like microalgae cultivation and municipal wastewater treatment
文献类型： 外文期刊
作者： Zhang, Chunmin 1 ; Zhang, Yalei 1 ; Zhuang, Baolu 2 ; Zhou, Xuefei 1 ;
作者机构： 1.Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Minist Educ, Key Lab Yangtze Water Environm, Shanghai 200092, Peoples R China
2.Chinese Acad Fishery Sci, Fishery Machinery & Instrument Res Inst, Shanghai 200092, Peoples R China
关键词： Microalgae biofuels;Wastewater treatment;Optimization of nutrient addition;Plackett-Burman design;Response surface methodology
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
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收录情况： SCI
摘要： Supplementing proper nutrients could be a strategy for enhancing algal biomass, nutrients uptake and lipid accumulation in the coupling system of biodiesel production and municipal wastewater treatment. However, there is scant information reporting systematic studies on screening and optimization of key supplemented components in the coupling system. The main factors were scientifically screened and optimized using statistical methods. Plackett-Burman design (PBD) was used to explore the roles of added nutrient factors, whereas response surface methodology (RSM) was employed for optimization. Based on the statistic analysis, the optimum added TP and FeCl_3?6H_2O concentrations for Scenedesmus obliquus-like microalgae growth, nutrients uptake and lipid accumulation were 4.41 mg L~(-1) and 6.48 mg L~(-1), respectively. The corresponding biomass, lipid content and TN/TP removal efficiency were 1.46 g L~(-1), 36.26% and >99%. The predicted value agreed well with the experimental value, as determined by validation experiments, which confirmed the availability and accuracy of the model.
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