Kinetic Studies of Biogas Generation Using Chicken Manure as Feedstock

WOS: 000448383600019The gas generated by anaerobic fermentation of organic wastes is called biogas. Since it contains methane, it can be burnt and so it can be used as an alternative energy source. The production of biogas is an anaerobic treatment process, it is important to understand the basic biochemistry and microbiology of anaerobic systems. This study demonstrates the kinetic study to find out the best microbial kinetics which will be necessary for the design of an anaerobic fermenter. For this purpose, chicken manure and chicken manure with inoculation culture were used. Experiments were operated under mesophilic conditions in laboratory type glass fermenters each having a volume of ten liters.European CommunityEuropean Community (EC)This study was held at Ege University, Chemical Engineering Department, Izmir-Turkey. This project, Fermented Product As A Hygienic Fertilizer And Soil Improver"was supported by European Community

Determination of optimum conditions and the kinetics of methanol oxidation

In this study, the catalytic oxidation of methanol to formaldehyde was investigated in a laboratory-scale fixedbed catalytic reactor, under a large number of different conditions. Iron-molybdate catalysts supported by silica or alumina with a molybdenium/iron (Mo/Fe) ratio of 1.5, 3 and 5 were studied for the gas phase reaction. In order to obtain the optimum conditions, six different temperatures in the range of 250-375°C and three different space times of 50.63, 33.75 and 20.25 g/(mol/h) were investigated. After determining the optimum conditions for this reaction, experiments aimed at understanding the reaction kinetics, were carried out. These experiments were performed on the catalyst favoring the formation of formaldehyde, which has a (Mo/Fe) ratio of 5 on a silica support. Seven reaction models derived by the mechanisms cited in the literature were tested to elucidate the kinetics of the reaction and the surface reaction controlling model was found to be the most suitable reaction mechanism. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Effect of temperature and catalyst type on the catalytic combustion of formaldehyde

WOS: 000338928400007In this study, the catalytic combustion of a volatile organic compound (VOC) namely formaldehyde on manganese oxide catalysts supported on silica or alumina, and on an industrial catalyst, i.e. a mixture of copper oxide and zinc oxide, was studied in the temperature range 125-225 degrees C. Formaldehyde was used as the aqueous solution. It was found that as the temperature was increased, the combustion of the produced and feed formaldehyde was enhanced whereas methanol combustion decreased. Also, the degree of conversion increased with the percentage of MnO in the catalysts.Ege University, Chemical Engineering Department, Izmir-TurkeyEge UniversityThis study was held and supported by the Ege University, Chemical Engineering Department, Izmir-Turkey