二价铁离子对UASB反应器厌氧发酵产氢效能的影响  

Effect of Fe^(2+) on Fermentation Hydrogen Production in an UASB

作　　者：李永峰[1] 王艺璇[1] 程国玲[1] 刘春妍[1] 

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《环境科学》2013年第6期2290-2294,共5页Environmental Science

基　　金：环境保护公益性行业科研专项(200909043)

摘　　要：金属离子Fe2+在生物产氢机制中起着重要作用.以红糖为底物,研究了Fe2+在0～1 650 mg·L-1范围内对UASB发酵产氢效能的影响.结果表明,适当浓度的二价铁离子对产氢具有一定的促进作用.当Fe2+浓度为0～450 mg·L-1时,发酵产气量及其氢气含量都随着Fe2+浓度的增加而增加;且当Fe2+浓度为450 mg·L-1时,获得最大生物气体积为17.72 L,较空白组提高了40.75%,此时氢气含量60.01%.而当外加的Fe2+浓度大于450 mg·L-1时,则开始呈下降趋势.因此,Fe2+可以成为调控发酵制氢的工程措施之一.Fe2＋ has an important effect on the production of hydrogen in a biological way.With the brown sugar as the substrate,the effect of biotechnology hydrogen production capacity of the Fe2＋ concentration ranging from 0-1 650 mg·L-1 on the condition of anaerobic fermentation was studied.The results showed that appropriate divalent ions had the ability to enhance the hydrogen production.Biogas amounts and hydrogen content increased with increasing Fe2＋ concentration from 0-450 mg·L-1.Compared with the control group increased by 40.75%,the maximum biogas amount of 17.72 L was obtained at Fe2＋ concentration of 450 mg·L-1.And at the same time,the hydrogen content was 60.01 percent.Biogas amounts and hydrogen content decreased gradually when the concentration of Fe2＋ was higher than 450 mg·L-1.Therefore Fe2＋ is one of important engineering parameters for the fermentative hydrogen production.

关 键 词：UASB Fe2+ 发酵产氢 浓度 产氢能力 

分 类 号：X382[环境科学与工程—环境工程]