

@article {1849,
	title = {Mesophilic and thermophilic temperature co-phase anaerobic digestion compared with single-stage mesophilic- and thermophilic digestion of sewage sludge},
	journal = {Water Res},
	volume = {38},
	number = {7},
	year = {2004},
	note = {Song, Young-Chae Kwon, Sang-Jo Woo, Jung-Hui eng Comparative Study Research Support, Non-U.S. Gov{\textquoteright}t England 2004/03/18 05:00 Water Res. 2004 Apr;38(7):1653-62.},
	pages = {1653-62},
	type = {Journal Article},
	abstract = {The performance of thermophilic and mesophilic temperature co-phase anaerobic digestions for sewage sludge, using the exchange process of the digesting sludge between spatially separated mesophilic and thermophilic digesters, was examined, and compared to single-stage mesophilic and thermophilic anaerobic digestions. The reduction of volatile solids from the temperature co-phase anaerobic digestion system was dependent on the sludge exchange rate, but was 50.7-58.8\%, which was much higher than 46.8\% of single-stage thermophilic digestion, as well as 43.5\% of the mesophilic digestion. The specific methane yield was 424-468 mL CH(4) per gram volatile solids removed, which was as good as that of single-stage mesophilic anaerobic digestion. The process stability and the effluent quality in terms of volatile fatty acids and soluble chemical oxygen demand of the temperature co-phase anaerobic digestion system were considerably better than those of the single-stage mesophilic anaerobic processes. The destruction of total coliform in the temperature co-phase system was 98.5-99.6\%, which was similar to the single-stage thermophilic digestion. The higher performances on the volatile solid and pathogen reduction, and stable operation of the temperature co-phase anaerobic system might be attributable to the well-functioned thermophilic digester, sharing nutrients and intermediates for anaerobic microorganisms, and selection of higher substrate affinity anaerobic microorganisms in the co-phase system, as a result of the sludge exchange between the mesophilic and thermophilic digesters.},
	keywords = {Anaerobic/*physiology *Bioreactors Enterobacteriaceae Micronutrients/metabolism Sewage/*chemistry Temperature Waste Disposal, bacteria, Fluid/*methods Water Microbiology Water Purification/*methods},
	issn = {0043-1354 (Print) 0043-1354 (Linking)},
	doi = {10.1016/j.watres.2003.12.019},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/15026219},
	author = {Song, Y. C. and Kwon, S. J. and Woo, J. H.}
}
