Civil and Environmental Engineering, University of Waterloo, Waterloo, ON, Canada N2L 3G1.
Bioresour Technol. 2012 Dec;126:123-30. doi: 10.1016/j.biortech.2012.09.043. Epub 2012 Sep 25.
Sulfide impact on biohydrogen production using dark fermentation of glucose at 37 °C was investigated. Dissolved sulfide (S(2-)) at a low concentration (25mg/L) increased biohydrogen production by 54% relative to the control (without iron addition). Whereas on initial dissolved S(2-) concentration of 500 mg/L significantly inhibited the biohydrogen production with total cumulative biohydrogen decreasing by 90% compared to the control (without iron addition). At sulfide concentrations of 500 mg S(2-)/L, addition of Fe(2+) at 3-4 times the theoretical requirement to precipitate 100% of the dissolved S(2-) entirely eliminated the inhibitory effect of sulfide.
研究了 37°C 下利用葡萄糖暗发酵生产生物氢气过程中硫的影响。与对照组（不加铁）相比，低浓度（25mg/L）的溶解硫（S(2-)）使生物氢气产量增加了 54%。然而，当初始溶解 S(2-)浓度为 500mg/L 时，生物氢气的产量显著受到抑制，与对照组相比，总累积生物氢气减少了 90%（不加铁）。在 500mg/L 的 S(2-)浓度下，添加 3-4 倍于理论需求量的 Fe(2+)可完全沉淀 100%的溶解 S(2-)，从而消除了硫的抑制作用。
