title: Cultivation of Chlorella sp. using raw dairy wastewater for nutrient removal and biodiesel production: Characteristics comparison of indoor bench-scale and outdoor pilot-scale cultures.
abstract: The biomass productivity and nutrient removal capacity of simultaneous Chlorella sp. cultivation for biodiesel production and nutrient removal in raw dairy wastewater (RDW) in indoor bench-scale and outdoor pilot-scale photobioreactors were compared. Results from the current work show that maximum biomass productivity in indoor bench-scale cultures can reach 260 mg L(-1) day(-1), compared to that of 110 mg L(-1) day(-1) in outdoor pilot-scale cultures. Maximum chemical oxygen demand (COD), total nitrogen (TN), and total phosphorous (TP) removal rate obtained in indoor conditions was 88.38, 38.34, and 2.03 mg L(-1) day(-1), respectively, this compared to 41.31, 6.58, and 2.74 mg L(-1) day(-1), respectively, for outdoor conditions. Finally, dominant fatty acids determined to be C16/C18 in outdoor pilot-scale cultures indicated great potential for scale up of Chlorella sp. cultivation in RDW for high quality biodiesel production coupling with RDW treatment.
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; School of Chemistry and Environmental Engineering, Shaoguan University, Shaoguan 512005, China; Universtity of Chinese Academy of Sciences, Beijing 100049, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Lu
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: wangzm@ms.giec.ac.cn.
authors.forename: Zhongming
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Foshan Sanshui Energy Environmental Technology Innovation and Incubation Center, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Foshan 528137, China.
authors.forename: Xuewei
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Zhenhong
authors.initials: Z
authors.lastname: Yuan
mesh_terms: D056804:Biofuels / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D002708:Chlorella / Q000254:growth & development / Q000378:metabolism*; D003612:Dairying; D005227:Fatty Acids / Q000032:analysis; D058086:Microalgae / Q000254:growth & development / Q000378:metabolism; D009584:Nitrogen / Q000378:metabolism*; D010758:Phosphorus / Q000378:metabolism*; D058433:Photobioreactors; D010865:Pilot Projects; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*; D062065:Wastewater / Q000032:analysis*; D060753:Water Quality
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D009584:Nitrogen; D010758:Phosphorus; D062065:Wastewater
keywords: Biodiesel production; Dairy wastewater; Microalgae; Nutrient removal