英语翻译Hydrogen is an idea,l clean and sustainable energy sourc

英语翻译
Hydrogen is an idea,l clean and sustainable energy source for the future because of its high conversion and nonpolluting nature.Biohydrogen production by dark-fermentation appears to have a great potential to be developed for practical application.However,one limiting factor affecting the development of hydrogen-production industrialization is that the hydrogen-producing capacity of bacteria is lower,so how to increase bacteria’s hydrogen-producing abilitywill be an urgent issue.In this experiment,2 mutants,namelyUV3 andUV7,were obtained by ultra-violet radiation.They grew and produced hydrogen efficiently on iron-containing medium.The hydrogen evolution of UV3 and UV7 were 2 356·68 ml/L and 2 219·62 ml/L at a glucose concentration of 10 g/L,respectively.With wild parent strain Ethanoligenens sp.ZGX4,the hydrogen evolution was 1 806·02 ml/L under the same conditions.Mutants’hydrogen-producing capacities were about 29·71% and 22·22% higher than that of wild parent strain ZGX4.The maximum H2 production rate by mutants UV3 and UV7 were estimated to be 32·57 mmolH2/g cell h and 31·19 mmolH2/g cell h,respectively,which were 38·18% and 34·78% higher than the control (23·57 mmolH2/g cellh).The abundant products of UV3 and UV7 were ethanol and acetic,which accounted for 95% -98% of total soluble microbial products.In each case,mutant strains UV3 and UV7 evolved hydrogen at a higher rate than the wild type,showing a possible potential for commercial hydrogen production.Another mutant named UV20’ was also gained whose main end metabo lites were butyric acid and acetic acid.This would provide researched material for a discussion of metabolic pathways of hydrogen-producing bacteria.

氢气是一个想法,升清洁和可持续的能源来源,为未来的,因为它具有高度的转化率和无污染性.生物制氢是由黑暗发酵似乎是有一个很大的发展潜力,为实际应用.但是,一个限制因素是影响发展的氢气生产工业化是因为产氢能力的细菌低,因此如何增加细菌的产氢abilitywill是一个紧迫的问题.在这个实验中,2突变体,namelyuv3 anduv7 ,获得的紫外辐射.他们长大,并产生氢气有效铁含中等.氢的演变uv3和uv7被二三五六六八毫升/ L和二二一九六二毫升/ L时,在葡萄糖浓度为10克/ L ,分别.与野生亲株ethanoligenens藻zgx4 ,析氢是一八○六○二毫升/ L时相同的条件下.mutants'hydrogen产能力分别约为29.71 ％及22.22 ％ ,高于野生亲株zgx4 .最高氢气产率由突变uv3和uv7估计为32.57 mmolh2 / G细胞H和31.19 mmolh2 / G细胞h后,分别,其中38.18 ％和34.78 ％ ,高于对照（ 23.57 mmolh2 / g的cellh ） .丰富的产品uv3和uv7被乙醇和醋酸,占95 ％ -98 ％的总溶解性微生物产品.在每种情况下,突变株uv3和uv7演变氢,在更高的税率高于野生型,呈现出可能的潜在商业制氢.另一个突变命名uv20 '也上涨,其主要最终代谢lites被丁酸和乙酸.这将提供研究材料,为讨论代谢途径产氢细菌.