College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
Bioresour Technol. 2013 Jan;128:565-70. doi: 10.1016/j.biortech.2012.11.004. Epub 2012 Nov 10.
In order to ascertain the effects of different carbon sources (methanol, glucose, starch and NaHCO(3)) on denitrification in BESs, the experiment was conducted in a constant current, 3.5 of chemical oxygen demand to nitrate ratio in a greenhouse. Among the four carbon sources investigated in BESs, NaHCO(3) showed the highest nitrite accumulation and the ratio of soluble microbial products to soluble chemical oxygen demand (SMP/SCOD) with a value of 3.68 ± 0.68 mg/L and 94%, respectively. And the addition of organic substrates could reduce SMP production and enhance the denitrification process. In the constant voltage experiment, it was observed that the organics could be used by microbes to generate electrons at the anode. And a maximal current value of 11.0 mA in the BESs fed with starch indicated that the complex carbon source was easier to be used by microorganisms to generate electricity than the simple carbon source.
为了确定不同碳源（甲醇、葡萄糖、淀粉和 NaHCO3）对 BES 中反硝化的影响，在温室中进行了恒流实验，化学需氧量与硝酸盐的比值为 3.5。在 BES 中研究的四种碳源中，NaHCO3 表现出最高的亚硝酸盐积累和可溶微生物产物与可溶化学需氧量的比值（SMP/SCOD），分别为 3.68±0.68mg/L 和 94%。并且添加有机底物可以减少 SMP 的产生并增强反硝化过程。在恒压实验中，观察到有机物质可以被微生物用来在阳极产生电子。在以淀粉为食的 BES 中，电流达到了 11.0mA 的最大值，这表明复杂的碳源比简单的碳源更容易被微生物用来发电。
