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This paper is aimed to explore the effect of pH value on the hydrogen-producing kinetics by photosynthetic bacteria from the enzymolysis liquid from the cornstalks.Taking the dry weight of biomass as assessment indicators,we have studied the effect of the different pH values on the growth of photosynthetic bacteria.In proceeding with our research,we have done the regression simulation for the growth of photosynthetic bacteria and photosynthetic bacteria hydrogen production from the enzymolysis liquid of corn stalks by using the logistic model and MMF model.As a result,we have found the effect of the different pH values on the features of hydrogen production kinetics and the growth conditions of photosynthetic bacteria,which implies that different pH values tend to affect the growth kinetics of photosynthetic bacteria differently whereas the hydrogen production kinetics of corn stalks enzymolysis liquid significantly.We have also found that pH value has a significant impact on the growth of the photosynthetic bacteria and hydrogen production process.For example,with the increase of pH,the photosynthetic bacterial biomass tends to increase in a proportional manner.When the pH value is 8,the maximum of the photosynthetic bacterial biomass turns to be0.543 7 g/L with the best time for inoculation being 84-96 h.What is more,the hydrogen production of photosynthetic bacteria tends to increase first and then decrease with the growth of pH value.When the pH value becomes 6,it has been found that the rate and capacity of the hydrogen production may reach its maximum degree,29.72 mL/(L·h) and 168.96 mL respectively.The results of our experiment can help to provide a scientific reference for further improvement of the enzymatic saccharification of the corn stalks on the photosynthetic hydrogen production theoretically and technically.
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Basic Information:
DOI：10.13637/j.issn.1009-6094.2016.03.052
China Classification Code:TQ116.2;X71
Citation Information:
[1]LU Chao-yang,WANG Yi,CAO Ming ,et al.Effect of pH values on the biohydrogen production from the enzymolysis liquid of the corn stalks via the photosynthetic bacteria[J].Journal of Safety and Environment,2016,16(03):262-266.DOI:10.13637/j.issn.1009-6094.2016.03.052.
Fund Information:
国家自然科学基金项目(51376056);; 教育部博士点基金新能源优先领域项目(20134105130001);; 国家高技术研究发展计划(863计划)项目(2012AA051502)
2016-06-25
2016-06-25