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Unveiling the mechanisms of Fe(Ⅲ)-loaded chitosan composite(CTS-Fe)in enhancing anaerobic digestion of waste activated sludge

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Journal of Environmental Sciences 2024年第4期138卷 200-211页

作者： Boaiqi Zhang Ziwen Zhao ruima Nan Chen Zhe Kong Zhongfang Lei Zhenya Zhang Graduate School of Life and Environmental Sciences University of Tsukuba1-1-1 TennodaiTsukubaIbaraki 305-8572Japan The Key Laboratory of Water and Sediment Sciences Ministry of Education/State Environmental Protection Key Laboratory of All Material Fluxes in River Ecosystems/College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510345China School of Water Resources and Environment China University of Geosciences(Beijing)Beijing 100083China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China

Anaerobic digestion(AD)of waste activated sludge(WAS)is usually limited by the low generation efficiency of ***(Ⅲ)-loaded chitosan composite(CTS-Fe)have been reported to effectively enhanced the digestion of WAS,but its role in promoting anaerobic sludge digestion remains *** present study,the effects of CTS-Fe on the hydrolysis and methanogenesis stages of WAS anaerobic digestion were *** addition of CTSFe increased methane production potential by 8%-23%under the tested conditions with the addition of 5-20 g/L ***,the results demonstrate that the addition of CTS-Fe could effectively promote the hydrolysis of WAS,evidenced by lower protein or polysaccharides concentration,higher soluble organic carbon in rector adding CTS-Fe,as well as the increased activity of extracellular hydrolase with higher CTS-Fe ***,the enrichment of Clostridia abundance(iron-reducing bacteria(IRBs))was observed in CTS-Fe adding reactor(8.9%-13.8%),which was higher than that in the control reactor(7.9%).The observation further suggesting the acceleration of hydrolysis through dissimilatory iron reduction(DIR)process,thus providing abundant substrates for ***,the presence of CTS-Fe was inhibited the acetoclastic and hydrogenotrophic methanogenesis process,which could be ascribed to the Fe(Ⅲ)act as electron acceptor coupled to methane for anaerobic ***,coenzyme F420 activity in the CTS-Fe added reactor was 34.9% lower than in the blank,also abundance of microorganisms involved in hydrogenotrophic methanogenesis was *** from this study could provide theoretical support for the practical applications of CTS-Fe.

关键词： Chitosan-Fe(Ⅲ)composite Methanogenesis Dissimilatory iron reduction Enzyme activity Microbial community structure

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附子汤加味治疗风湿性关节炎临床观察

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中医学报 2010年第4期25卷 752-753页

作者：黄彦德田瑞曼谢忠礼新县中医院河南新县465550 河南中医学院河南郑州450008

目的:观察附子汤加味治疗风湿性关节炎的临床疗效。方法:风湿性关节炎患者39例,以附子汤为基础辨证加药治疗,30d为1个疗程,2个疗程后作疗效评价。结果:39例中治愈15例(38.46%);好转17例(43.59%);未愈7例(17.95%),有效率82.05%。结论:附... 详细信息

目的:观察附子汤加味治疗风湿性关节炎的临床疗效。方法:风湿性关节炎患者39例,以附子汤为基础辨证加药治疗,30d为1个疗程,2个疗程后作疗效评价。结果:39例中治愈15例(38.46%);好转17例(43.59%);未愈7例(17.95%),有效率82.05%。结论:附子汤为基础辨证加药治疗风湿性关节炎有较好疗效。

关键词：附子汤风湿性关节炎痹证

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