Journal
BIORESOURCE TECHNOLOGY
Volume 112, Issue -, Pages 1-9Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.02.079
Keywords
Anaerobic digestion; Methanosarcina; Methanosaeta; Syntrophic acetate oxidation; Biogas
Funding
- Ghent University Multidisciplinary Research Partnership (MRP) - Biotechnology for a sustainable economy [01 MRA 510W]
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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-1, salt concentrations up to 18,000 mg Na+L-1, a pH shock of 0.8-1.0 units and acetate concentrations up to 15,000 mg COD L-1. The possibilities of Methanosarcina sp. as key organisms in specific types of anaerobic digestion systems are demonstrated in this review. (C) 2012 Elsevier Ltd. All rights reserved.
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