Simultaneous hydrogen production and consumption in Anaerobic mixed culture fermentation
Simultaneous hydrogen production and consumption in Anaerobic mixed culture fermentation
... decrease in butyrate and hydrogen production and an increase in acetate and ethanol with increasing pH. The authors agree that the results are reproducible, reversible and independent of the inoculum ... recognized as a possible hindrance for sustainable hydrogen production [21-24], simultaneous H 2 production and consumption has not been rigorously confirmed in...
Ngày tải lên: 05/09/2013, 14:58
Global Production and Trade in the Knowledge Economy pdf
... of transport costs, and we show how this re- lationship can be used to infer cross-country and cross-industry variation in the marginal cost facing multinationals in serving foreign markets. ... Substituting out i (z), integrating, substituting for bz A N using (10), and then taking logarithms of the resulting expression yields the following simple formula for this share of interm...
Ngày tải lên: 18/03/2014, 02:20
Production and Cost in the U.S. Paper and Paperboard Industry pdf
... pricing, as found in Bernstein (1992) and Christensen and Caves (1997). And notwithstanding significant consolidation in the mid-1980s, industry’s attempt to ‘get control’ of its capacity and ... newsprint, printing and writing papers, and household and sanitary papers) would improve our understanding of the competitive differences among these groups and this could help...
Ngày tải lên: 01/04/2014, 00:20
Báo cáo y học: "Strict glycaemic control in patients hospitalised in a mixed medical and surgical intensive care unit: a randomised clinical trial"
... 250) in thestandard insulin group and 36.6% (93 of 254) in the intensiveinsulin group. ICU mortality was similar for patients of thestandard insulin group and in those from the intensive insulingroup: ... standard insulin group and 83of 254 (32.7%) in the intensive insulin group.The mean calorie intake in 24 hours was 23.1 ± 12.7 kcal/kgin the standard insulin group and 25.5...
Ngày tải lên: 25/10/2012, 10:35
Food, Animal production and Human Comsumption in the Asian Region
... growth in livestock production 1980-2007. (FAO, 2009) 33 Livestock in ASIAN region, a casestudy • Cambodia • Lao PDR • Thailand • Vietnam 34 Land and population Countries Population Land area Population ... 28 Production of meat, eggs, and milk by developing countries 29 Livestock production by region 1980-2007 (FAO, 2009) 3 30 World production of meat 1961-2007 (FAO, 2009...
Ngày tải lên: 08/04/2013, 10:35
Characteristics of hydrogen production from food waste and waste activated sludge
... produced simultaneously with hydrogen production. Simultaneous n- butyrate production with hydrogen was also reported in anaerobic hydrogen fermentation (Lay et al., 1999; Noike et al., 2000), meaning ... and Benemann, J. R., 2002. Biological hydrogen production; fundamentals and limiting processes, Int. J. Hydrogen Energy, 27, 1185-1193. Han, S.-K. and Shin, H.-S....
Ngày tải lên: 05/09/2013, 08:40
INFLUENCE OF NITROGEN, ACETATE AND PROPIONATE ON HYDROGEN PRODUCTION FROM PINEAPPLE WASTE EXTRACT BY Rhodospirillum rubrum
... Periodic illuminated fermentation was more effective in producing hydrogen than continuous illuminated fermentation. The maximum hydrogen production potential (337 ml), specific hydrogen production ... bacteria strain Rhodospirillum rubrum in batch culture. The fermentation conditions used in this study were continuous illumination fermentation (24 hours of light) and...
Ngày tải lên: 05/09/2013, 09:08
Impact of pH on Anaerobic Substrate Uptake by PAOs and GAOs in an EBPR Activated Sludge Process Analyzed by MAR-FISH
... was examined by MAR-FISH, and the results are shown in Figs. 5 and 6. Lower initial pH conditions increased anaerobic acetate uptake by Candidatus ‘Accumulibacter phosphatis’ in the second and third ... determine the effect of pH on anaerobic acetate uptake by Candidatus ‘Accumulibacter phosphatis’ and Candidatus ‘Competibacter phosphatis’. Within the tested pH range (initial...
Ngày tải lên: 05/09/2013, 09:38
Sustainability of an energy conversion system in Canada involving large-scale integrated hydrogen production using solid fuels
... to increase once a market and demand are established. 4.3 Sustainability of fuel handling processes Solid fuels arriving at the system require temporary storage, drying, crushing/milling and internal ... indicators In this work, ecological indicators [18] help in assessing information about ecosystems and the impact of human activity on ecosystems pertaining to the large-scale prod...
Ngày tải lên: 05/09/2013, 14:58
Production of hydrogen using composite membrane in PEM water electrolysis
... used in all sectors of the economy. Today hydrogen is commonly used in industrial applications to manufacture petrochemicals and fertilizers. The current hydrogen industry does not produce hydrogen ... Boiling in 3% hydrogen peroxide (H 2 O 2) for 1h to oxidize organic impurities. • Rinsing with boiling water for 2h. • Boiling in H 2 SO 4 for 1h to remove ionic impurities. •...
Ngày tải lên: 05/09/2013, 16:11