微藻生物质与小麦秸秆的厌氧共消化及其与热碱预处理的关系。
Anaerobic co-digestion of microalgal biomass and wheat straw with and without thermo-alkaline pretreatment.
机构信息
GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya Barcelona Tech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain; LBE, INRA, Avenue des Etangs, F-11100 Narbonne, France.
GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya Barcelona Tech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain; UBC Bioreactor Technology Group, School of Engineering, The University of British Columbia, Okanagan Campus, 3333 University Way, Kelowna, BC V1V 1V7, Canada.
出版信息
Bioresour Technol. 2017 Aug;237:89-98. doi: 10.1016/j.biortech.2017.03.151. Epub 2017 Mar 27.
This study aimed at analyzing the anaerobic co-digestion of microalgal biomass grown in wastewater and wheat straw. To this end, Biochemical Methane Potential (BMP) tests were carried out testing different substrate proportions (20-80, 50-50 and 80-20%, on a volatile solid basis). In order to improve their biodegradability, the co-digestion of both substrates was also evaluated after applying a thermo-alkaline pretreatment (10% CaO at 75°C for 24h). The highest synergies in degradation rates were observed by adding at least 50% of wheat straw. Therefore, the co-digestion of 50% microalgae - 50% wheat straw was investigated in mesophilic lab-scale reactors. The results showed that the methane yield was increased by 77% with the co-digestion as compared to microalgae mono-digestion, while the pretreatment only increased the methane yield by 15% compared to the untreated mixture. Thus, the anaerobic co-digestion of microalgae and wheat straw was successful even without applying a thermo-alkaline pretreatment.
本研究旨在分析在废水和小麦秸秆中生长的微藻生物质的厌氧共消化。为此，进行了生物甲烷潜力（BMP）测试，测试了不同的底物比例（20-80、50-50 和 80-20%，基于挥发性固体）。为了提高它们的生物降解性，还评估了在应用热-碱性预处理（10%CaO 在 75°C 下 24 小时）后两种底物的共消化。通过添加至少 50%的小麦秸秆，观察到降解率的协同作用最高。因此，在中温实验室规模反应器中研究了 50%微藻-50%小麦秸秆的共消化。结果表明，与微藻单消化相比，共消化使甲烷产量增加了 77%，而预处理与未处理混合物相比仅使甲烷产量增加了 15%。因此，即使不应用热-碱性预处理，微藻和小麦秸秆的厌氧共消化也取得了成功。
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