When the OLR was controlled at 15kg COD/m3 · d, the maximum biogas production capacity was 3. 12m3 H2/m3reactor · d, the maximum hydrogen production capacity of ethanol type fermentation was 1. 56 m3H2/m3reactor · d, and the hydrogen content was about 50%.
While, for the mixed acid fermentation, the hydrogen production capacity was relatively low, the maximum biogas production capacity was 0. 57 m3H2/ m3reactor · d, the maximum hydrogen production capacity was 0. 17 m3H2/m3reactor · d, and the hydrogen content was around 30%.
The thermodynamic analysis on direct hydrogen production from carbonaceous energy resources showed that there exist suitable reaction conditions and the heat balance could be realized.
The thermodynamic analysis and the experimental studies proved the feasibility of direct hydrogen production.
The paper summarized the virtue of hydrogen energy , the manufacture and storage of hydrogen, and the application foreground of hydrogen energy,imagined a happy future of hydrogen energy.
Batch experiments were conducted to investigate effects of glucose concentration, preculture time, inoculation volume, temperature, nitrogen source and various organic substrates on hydrogen production by a novel fermentative hydrogen-producing bacterial strain B49 (AF481148 in EMBL).
采用间歇实验,研究了葡萄糖浓度、菌龄、接种量、温度、氮源、不同有机底物对发酵产氢产酸细菌新菌种B49(AF481148 in EMBL)生物产氢的影响。
In the CoMSIA model, steric, electrostatic, hydrophobic and hydrogen bond donating factors were correlated to the activity and later the favorable and unfavorable regions of interaction were obtained.
tripos standard, hydrogen bonding, parabolic indicator in the case of CoMFA and steric, electrostatic, donor, acceptor, hydrophobic, donor and acceptor, steric and electrostatic in the case of CoMSIA.
Flavonoid antioxidants act as scavengers of free radicals by rapid donation of a hydrogen atom.
In addition, electrostatic, hydrogen-bonding, and dipole-dipole interactions are responsible for the above separations, which improve the selectivity of DNB for solutes.
Both metalation reaction with n-butyllithium and hydrochlorination reaction with dry hydrogen chloride selectively and quantitatively occurred at the pendant reactive sites, generating polymeric benzyllithium and 1-chloroethylbenzene species.