sustainable hydrogen production by thermochemical biomass processing

... yields of hydrogen production decrease by hydrogen recycling due to the presence of uptake hydrogenases1, which consume a portion of the hydrogen produced An additional factor that may reduce hydrogen ... for hydrogen productivity Finally, the hydrogen production stability of the enriched culture is compared in a continuous approach by UASB and a batch approach by an ASBR for stable hydrogen production ... as: Overall yield for hydrogen productions is one or two molecules of hydrogen per molecule of pyruvate which is considered low production The reduction of hydrogenase by NADH is an energetically...

Ngày tải lên: 22/10/2015, 21:14

... inhibited hydrogen production by photosynthetic bacteria These microorganisms produce hydrogen by the catalytic activity of nitrogenase, which is inhibited by nitrogen (at hydrogen production ... explained by Khanal et al (2004) The specific hydrogen production potential, Ps (ml/g Chemical Oxygen Demand-COD), was obtained by dividing P by COD of substrate applied, while the specific hydrogen production ... (1999) Hydrogen production from tofu wastewater by Rhodobacter sphaeroides immobilized in agar gels., Int J Hydrogen Energy, Vol.24: 305-310 Zürrer, H., and Bachofen, R (1979) Hydrogen production by...

Ngày tải lên: 05/09/2013, 09:08

... developed of the BCL (Battelle Columbus Laboratory) biomass gasifier The models were used to develop conceptual designs for biomass- toliquids and biomass- to -hydrogen plants, to size and cost these plants, ... liquid fuels and hydrogen produced from biomass Economics and greenhouse gas emissions were to be compared with more traditional approaches for converting biomass to fuel, such as the production of ... best match of biomass gasification technology to downstream syngas conversion technology for either hydrogen or liquid fuels production It therefore seems prudent to consider other biomass gasification...

Ngày tải lên: 18/03/2014, 02:20

... and parametric study of a hydrogen production process using steam glycerol reforming Energy 2014;64:473e83 [3] Chen J, Lu Y, Guo L, Zhang X, Xiao P Hydrogen production by biomass gasification in ... energy powered hydrogen production by PEM water electrolysis Energy 2014;69: 592e602 [5] Tanksale A, Beltramini J, Lu G A review of catalytic hydrogen production processes from biomass Renew Sustain ... A, Chen H, Kim J Biomass gasification in a circulating fluidized bed Biomass Bioenergy 2004;26:171e93 [28] Tan W, Zhong Q Simulation of hydrogen production in biomass gasifier by ASPEN PLUS In:...

Ngày tải lên: 29/07/2016, 14:03

... of Biomass Gasification in Dual Fluidized Bed Reactors under Aspen Plus Energ Fuel 2012;26:3840-3855 [16] Dufour A, Girods P, Masson E, Rogaume Y, Zoulalian A Synthesis gas production by biomass ... target Typically, the feedstock cost for biomass is 3~4 times higher than coal, therefore, it is important to reduce the feedstock cost by reducing the biomass fraction [10] The stringent particle ... investigated aims to lower GHG emissions [4, 9] Limited assessment of FTL production system via solar hybrid co-gasification of coal and biomass (SCBTL) has been reported, especially for the SCBTL system...

Ngày tải lên: 01/08/2016, 09:30

... utilization of by- product oxygen from electrolysis hydrogen production Energy 2005;30:2580e95 http://dx.doi.org/ 10.1016/j.energy.2004.07.004 [14] Orecchini F, Bocci E Biomass to hydrogen for the ... mass flow rate of biomass dry and ash free feeding the plant and HV is the Heating Value (High or Low) of hydrogen and dry ash free biomass, respectively As mentioned above, biomass feedstock ... production, funded by FCH-JU under the topic SP1-JTI-FCH.2011.2.3: Biomass- to -hydrogen thermal conversion processes) The authors are also grateful to HyGear (HYGEAR B.V “Engineering for sustainable...

Ngày tải lên: 01/08/2016, 09:32

... specific hydrogen production potential (mL/g VS) was obtained by dividing P by the substrate weight (g VS), while the specific hydrogen production rate was calculated by dividing Rm by the inoculum ... organic acids production almost ceased as hydrogen production ended up In most cases, nbutyrate was produced simultaneously with hydrogen production Simultaneous nbutyrate production with hydrogen ... the hydrogen production potential at 5.0 % of VS concentration (Van Ginkel et al., 2001; Lay, 2001) The hydrogen production potential decreased as sewage sludge composition increased Hydrogen production...

Ngày tải lên: 05/09/2013, 08:40

... in the simultaneous production of several hydrogen streams (as shown in Figure 1) The hydrogen is derived in various stages from the hydrogen portion of hydrocarbons and by splitting water The ... with hydrogen production when using these two energy sources [14], except when using oxy-fuel combustion [15], which is currently at the developmental stage The need for large-scale hydrogen production, ... on future changes in the global energy market Large-scale integrated hydrogen production system The large-scale production of hydrogen using an integration of conversion technologies as shown in...

Ngày tải lên: 05/09/2013, 14:58

... culture at 55 °C Even though molecular hydrogen consumption has been recognized as a possible hindrance for sustainable hydrogen production [21-24], simultaneous H2 production and consumption has not ... Implications of hydrogen consumption (molecular hydrogen or equivalents) on the overall hydrogen yield are previously discussed by Dinamarca and Bakke [7] The formation of reduced products, biomass growth ... hinders for sustainable mixed culture hydrogen production Microbial electrohydrogenesis can become a method to overcome these hiders If so, the fermentation investigated here, with low hydrogen...

Ngày tải lên: 05/09/2013, 14:58

... Gaudernack, Steinar Lynum, Hydrogen from natural gas without release of CO2 to the atmosphere Int J Hydrogen Energy, 1998, 23, 1087-1093 [2] Steinberg M, Production of hydrogen and methanol from ... decarbonization of fossil fuels, Int J Hydrogen Energy, 2001, 26, 1165-1175 [5] Muradov N.Z, From hydrocarbon to hydrogen carbon to hydrogen economy, Int J Hydrogen Energy, 2005, 30, 225-237 [6] ... Jun Kong, Gui Young Han, Byung Kwon Lee, Tae-Jin Lee, Ki June Yoon, Int J Hydrogen Energy, 2004, 29, 187- 193 [7] Muradov N Thermo catalytic CO2 – free production of hydrogen from hydrocarbon...

Ngày tải lên: 05/09/2013, 15:28

... created by eliminating genome-length HCV RNA from the O cells by IFN treatment; and OR6c, cured cells which were created by eliminating genome-length HCV RNA from the cloned OR6 cells [44] by IFN ... its activation is mediated by the TLR3 but not the TLR4 signaling pathway, we examined whether or not activation of IRF-3 by M-pIC treatment is specifically mediated by the TLR3 signaling pathway ... mRNAs is mediated by the IFN-b induced by poly(I-C) treatment In summary, these results revealed that PH5CH8 cells retain both the Cardif- and TRIF-mediated pathways for IFN-b production, whereas...

Ngày tải lên: 18/02/2014, 16:20

... volumetric lipid production rate (QP) and specific rate of lipid production (qP) by cultivation with an initial urea concentration of 5g/L and 10 g/L B Microbial Lipid Production by an Integrated ... different of volumetric lipid production rate (QP), specific product yield (YP/X), volumetric cell mass production rate (QX) and specific rate of lipid production (qP) by using different source of ... dry biomass weight of microalgae strain The culture broth (5 mL) was centrifuged at 5,000 rpm for Harvested biomass was washed twice with 5mL of distilled water Duplicate samples of harvested biomass...

Ngày tải lên: 21/02/2014, 10:20

... representing a production of chemicals with sanitary impact • A process of the downstream chemistry for representing production of chemicals except the steam crackers, the PVC production and ... industry This production can be also representative of no sanitary impact unit • Production of pharmaceutical active ingredients representing the speciality chemical industry (production in batch ... This synopsis sheet is related to the PVC production by the suspension process only The suspension process for producing PVC resins is characterised by the formation of polymers in droplets of...

Ngày tải lên: 05/03/2014, 21:20

... CLEANER PRODUCTION 1.1 What is Cleaner Production? 1.2 Why invest in Cleaner Production? 1.3 Cleaner Production can be practised now 1.4 Cleaner Production and sustainable development 1.5 Cleaner Production ... series include: • Cleaner Production Assessment in Dairy Processing; • Cleaner Production Assessment in Meat Processing; and • Cleaner Production Assessment in Fish Processing This document is ... Overview of Dairy Processing OVERVIEW OF DAIRY PROCESSING Primary production and dairy processing The dairy industry is divided into two main production areas: • the primary production of milk...

Ngày tải lên: 10/03/2014, 20:25

... biomass growth is substrate limited, then biomass production decreases proportionally with biomass concentration YG and qm can be determined by measurement of biomass production at di€erent biomass ... alone had no e€ect on biomass production, but caused additional protonphore induced reduction of biomass production At pH 6.2 the eciency of biomass production was 1125 reduced by 77% when the feed ... Reducing production of excess biomass phosphorylation reduces ATP production and so reduces biomass production and may also result in stimulated substrate catabolism This may be achieved by elevating...

Ngày tải lên: 11/03/2014, 23:04

... (ride) Figure 3: Translation Example by Example-based Processing etc For instance, the following E-to-J simple pattern (a) is converted into a full-scale pattern (b) by the pattern compiler (a) [VP] ... input is performed by the exact-matching It is a straightforward idea to extend this exact-matching to fuzzy-matching so that we can reduce the number of translation patterns by merging some patterns ... the preference of these results are usually determined by the cost value calculated as the sum of costs of used rules This example-based processing adds fuzzy-matching cost to this base cost The...

Ngày tải lên: 17/03/2014, 07:20

... (LPS)-induced TNF-a protein production Furthermore, inhibition of FXR1 production can abolish the suppression of TNF-a TGF inhibits LPS induction of TNF via FXR1 protein production induced by TGF-b1 FXR1 ... mRNA-binding proteins known to modulate TNF-a, is induced by TGF-b1 but not by LPS The specific role of FXR1 in this process was shown by inhibition by siRNA on the one hand, and stable overexpression ... (Fig 4A) FXR1 siRNA inhibited FXR1 mRNA expression by 74% as compared with a control siRNA Inhibition of FXR1 protein production was assessed by using RAW 264.7 cells treated with TGF-b1 for h...

Ngày tải lên: 22/03/2014, 21:21

... and 2B3 was not affected by incubation time, but was significantly affected by the pH of the buffer The persistence in binding of 2B12 to Kb was not significantly affected by either incubation time ... APP leading to enhanced cleavage by b-secretase, but that they are reducing Ab by a different mechanism It suggests that they are inhibiting the cleavage of APP by b-secretase The lack of a significant ... amyloid-b production Determination of antibody epitopes Binding of 2B3 and 2B12 to full-length APP The epitopes of 2B3 and 2B12 on APP were investigated by western blotting, as above, and by comparing...

Ngày tải lên: 29/03/2014, 00:20

... Dependence factor of the hydrogen flux on the hydrogen partial pressure Pressure The pre-exponential factor The hydrogen permeability Hydrogen partial pressures at the permeate side Hydrogen partial pressures ... atomic hydrogen on membrane surface; dissolution of atomic hydrogen into the palladium matrix; diffusion of atomic hydrogen through the membrane; re-combination of atomic hydrogen to form hydrogen ... the hydrogen flux to the hydrogen partial pressure, JH2 the hydrogen flux permeating through the membrane, Pe the hydrogen permeability, d the membrane thickness, pH2 ;ret and pH2 ;perm the hydrogen...

Ngày tải lên: 01/04/2014, 10:34

... substantial demand for hydrogen in sustainable industrial production such as for chemicals and steels 1.2  Hydrogen Properties 1.2.1  Hydrogen Isotopes Having atomic number 1, hydrogen is the lightest ... materials processing such as glass production, food preparation, and chemical production 1.3.1  Ammonia Production Ammonia (NH3) is typically produced by catalyzed chemical reaction of hydrogen, ... LLC 12 Nuclear Hydrogen Production Handbook TABLE 1.3 Estimated Coal Feeds and Emissions of Direct CTL Using Coal-Sourced Hydrogen and Nuclear Hydrogen Coal-Derived Hydrogen Synfuel production capacity...

Ngày tải lên: 01/04/2014, 11:40