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Position: Home > Articles > Biocrude oil production from Chlorella sp cultivated in anaerobic digestate after UF membrane treatment International Journal of Agricultural and Biological Engineering 2017,10 (1)

Biocrude oil production from Chlorella sp cultivated in anaerobic digestate after UF membrane treatment

作者：

Wang Meng;Wang Xinfeng;Zhu Zhangbing;Lu Jianwen;Zhang, Yuanhui;Li Baoming;Lu Haifeng;Duan Na;Zhang Dongming;Dong Taili;Liu Zhidan

单位：

China Agr Univ, Coll Water Resources & Civil Engn, Key Lab Agr Engn Struct & Environm, Minist Agr, Beijing 100083, Peoples R China;China Agr Univ, Coll Water Resources & Civil Engn, Lab Environm Enhancing Energy, Beijing 100083, Peoples R China;Shandong Minhe Biol Technol Co Ltd, Penglai 265600, Peoples R China;Univ Illinois, Dept Agr & Biol Engn, Urbana, IL 61801 USA

关键词：

microalgae;wastewater;hydrothermal liquefaction;anaerobic digestion effluent;WASTE-WATER TREATMENT;MACROALGAE ENTEROMORPHA-PROLIFERA;ALGAL BIOMASS;NUTRIENT REMOVAL;BIO-OIL;EFFLUENT;INTEGRATION;CONVERSION

摘要：

Algae cultivation in animal wastewater could recover nutrient resources, and harvest considerable amount of algae biomass for biofuel conversion. In this study, Chlorella sp. cultivated in ultrafiltration (UF) membrane treated anaerobic digestion effluent of chicken manure was converted into biocrude oil through hydrothermal liquefaction (HTL). The potential of biocrude production from grown Chlorella sp. was studied through changing the operational conditions of HTL, i. e., holding temperature (HT, 250 degrees C-330 degrees C), retention time (RT, 0.5-1.5 h), and total solid (TS) (15 wt%-25 wt%) of the feedstock. The highest biocrude oil yield was 32.9% at 330 degrees C, 1.5 h and 20 wt% TS. The single factor experiments of HT also suggested that the biocrude oil yield decreased when the temperature was higher than 330 degrees C. There were no significant differences of elemental contents in biocrude samples. The maximum higher heating values (HHV) of Chlorella sp. biocrude was 40.04 MJ/kg at HT of 330 degrees C, RT of 1 h and TS of 15 wt%. This study suggests the great potential for energy recovery from Chlorella sp. cultivated in UF membrane treated anaerobic digestion effluent via HTL.

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Biocrude oil production from Chlorella sp cultivated in anaerobic digestate after UF membrane treatment

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