Granulation and immobilisation of methanogenic and sulfate-reducing bacteria in high-rate anaerobic reactors |
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| Authors: | A. Visser P. A. Alphenaar Y. Gao G. van Rossum G. Lettinga |
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| Affiliation: | (1) Department of Environmental Technology, Agricultural University of Wageningen, P.O.B. 8129, 6700 EV Wageningen, The Netherlands;(2) Present address: TAUW Infra Consult BV, P.O.B. 479, 7400 AL Deventer, The Netherlands;(3) Present address: Biothane Corporation, 2500 Broadway Drawer 5, 08104 Camden, NJ, USA |
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| Abstract: | The formation of anaerobic granular sludge on a sulfate-containing waste-water was studied in up-flow anaerobic sludge blanket reactors. Three systems were examined: a sulfidogenic system, a methanogenic system and a mixed sulfidogenic/methanogenic system. No significant granulation was observed in the sulfidogenic system. For the methanogenic and the mixed methanogenic/sulfidogenic system granulation proceeded well, and no significant difference in the granule diameter could be detected. In the three systems studied, different types of sludge developed. A (mainly) methanogenic granular sludge was developed in the methanogenic system, a (more) sulfate-reducing granular sludge was developed in the mixed methanogenic/sulfidogenic system, and a flocculant sulfate-reducing sludge was developed in the sulfidogenic system.Correspondence to: A Visser |
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