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Methane production from wheat straw with anaerobic sludge by heme supplementation

文献类型： 外文期刊

作者： Xi, Yonglan 1 ; Chang, Zhizhou 1 ; Ye, Xiaomei 1 ; Xu, Rong 1 ; Du, Jing 1 ; Chen, Guangyin 2 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Jiangsu Collaborat Innovat Ctr Solid Organ Waste, Lab Agr Wastes Treatment & Recycling, Nanjing 210014, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Jiangsu Collaborat Innovat Ctr Solid Organ Waste, Lab Ag

关键词： Wheat straw;Heme;Anaerobic digestion;Methane;NADH/NAD~+

期刊名称：BIORESOURCE TECHNOLOGY （ 2020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： Wheat straw particles were directly used as substrate for batch anaerobic digestion with anaerobic sludge under 35 °C to evaluate the effects of adding heme on methane production. When 1 mg/l heme was added to the fermentation process with no agitated speed, a maximum cumulative methane production of 12227.8 ml was obtained with cumulative methane yield of wheat straw was 257.4 ml/g-TS (total solid), which was increased by 20.6% compared with 213.5 ml/g-TS of no heme was added in the reactor. Meanwhile, oxido-reduction potential (ORP) level was decreased, the activity of coenzyme F_(420) was significantly improved and NADH/NAD~+ ratio were the highest than other experimental groups. These results suggest that heme-supplemented anaerobic sludge with no agitated speed may be providing a more reductive environment, which is a cost-effective method of anaerobic digestion from biomass waste to produce methane with less energy consuming.

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