Methanosarcina: The rediscovered methanogen for heavy duty biomethanation

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• 作者：Jo De Vrieze ; Tom Hennebel ; Nico Boon ; Willy Verstraete ; ^{Willy.Verstraete@UGent.be} ;
• 关键词：CSTR ; continuously stirred tank reactor ; DIET ; direct interspecies electron transfer ; HM ; hydrogenotrophic methanogenesis ; OLR ; organic loading rate ; SAB ; syntrophic acetogenic bacteria ; SAO ; syntrophic acetate oxidation ; SRT ; sludge retention time ; TAN
• 刊名：Bioresource Technology
• 出版年：2012
• 期刊代码：11_09608524
• 类别：ce
• 出版时间：May, 2012
• 卷：112
• 期：Complete
• 页码：1-9
• 文件大小：353 K

摘要

Anaerobic digestion is an important technology in the framework of renewable energy production. The anaerobic digestion system is susceptible to perturbations due to the sensitivity of the methanogens towards environmental factors. Currently, technology is evolving from conventional waste treatment, i.e. the removal of pollutants, to very intensive biogas production from concentrated wastes, in the framework of bio-energy production. In the latter configuration Methanosarcina species appear to be of crucial importance. Methanosarcina sp. are, compared to other methanogens, quite robust towards different impairments. They are reported to be tolerant to total ammonium concentrations up to 7000 mg L^鈭?, salt concentrations up to 18,000 mg Na⁺ L^鈭?, a pH shock of 0.8-1.0 units and acetate concentrations up to 15,000 mg COD L^鈭?. The possibilities of Methanosarcina sp. as key organisms in specific types of anaerobic digestion systems are demonstrated in this review.