Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/69439
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dc.contributor.authorChou, C.H.en_US
dc.contributor.authorWang, C.W.en_US
dc.contributor.authorHuang, C.C.en_US
dc.contributor.authorLay, J.J.en_US
dc.date2008zh_TW
dc.date.accessioned2014-06-11T05:58:20Z-
dc.date.available2014-06-11T05:58:20Z-
dc.identifier.issn0360-3199zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/69439-
dc.description.abstractTen and 100L bioreactors were utilized to evaluate the effect of stirring and pH on anaerobes converting spent brewery grains to hydrogen. Experimental results of 10-L bioreactor demonstrated that both stirring speed and pH significantly affected the hydrogen conversion and the chemical oxygen demand reduction of the spent grains. Highly reproducible metabolic data confirmed that the anaerobes from grass compost could convert the spent grains to fatty acids and alcohols as well as hydrogen. Multiple analyses indicated that stirring mainly affected the hydrogen production rate. pH level was a more important factor than the stirring on shortening hydrogen production lag and increasing hydrogen yield. Optimum conditions of pH = 6.0 and stirring speed = 120 rpm were obtained for 10-L bioreactor converting 3% grains to hydrogen by observing its production rate together with yield, found to be 161 mLH(2)/gTVS/d and 13 mL H(2)/g TVS, respectively. However, the rate and the yield decreased along with stirring speeds increased above 120 rpm. When the stirring speeds of 10-L bioreactor were greater than this value, its mixing condition changed from laminar flow to turbulent flow. The 100-L experiment with a sequencing batch mode operation confirmed that the hydrogen production rate obtained with laminar flow was significantly more stable and reproducible than with turbulent flow. (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationInternational Journal of Hydrogen Energyen_US
dc.relation.ispartofseriesInternational Journal of Hydrogen Energy, Volume 33, Issue 5, Page(s) 1550-1558.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.ijhydene.2007.09.031en_US
dc.subjectanaerobicen_US
dc.subjecthydrogenen_US
dc.subjectmixen_US
dc.subjectorganic wastesen_US
dc.subjectpHen_US
dc.subjectReynolds numberen_US
dc.subjectdigested-sludgeen_US
dc.subjectglucoseen_US
dc.subjectfermentationen_US
dc.subjectmicrofloraen_US
dc.subjectcelluloseen_US
dc.subjectcultureen_US
dc.subjectwateren_US
dc.titlePilot study of the influence of stirring and pH on anaerobes converting high-solid organic wastes to hydrogenen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.ijhydene.2007.09.031zh_TW
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