Biohydrogen gas production from food processing and domestic wastewaters
Biohydrogen gas production from food processing and domestic wastewaters
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DOI：
10.1016/j.ijhydene.2004.09.017
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发表时间：
2005-12
影响因子：
7.2
通讯作者：
S. Ginkel;Sang-Eun Oh;B. Logan
中科院分区：
文献类型：
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作者：
S. Ginkel;Sang-Eun Oh;B. Logan
食品加工业产生高浓度、富含碳水化合物的废水，但其生物制氢的潜力尚未得到广泛研究。废水来自四个不同的食品加工行业，化学需氧量为9g/L（苹果加工），21g/L（土豆加工），0.6和20g/L（糖果A和B）。从所有四种食品加工废水中产生的沼气始终含有60%的氢，其余为二氧化碳。产氢的化学需氧量（COD）去除率一般在5-11%的范围内。苹果废水的总氢气转化率为0.7-0.9L-H2 /L-废水，糖果a为0.1L/L，糖果B为0.4-2.0L /L，马铃薯废水为2.1-2.8L /L。当样品中添加营养物时，产氢量与COD去除率之间存在良好的相关性，平均为0.10±0.01L-H2/g-COD。然而，在缺乏营养物或在马铃薯加工设施进行更广泛的厂内试验时，产氢不能与COD去除相关。由生活废水样品（浓缩25倍）产生的气体仅含有23±8%的氢，导致原始未稀释废水的估计最大产量仅为0.01L/L。根据观察到的马铃薯加工厂流出物产氢量为1.0L-H2/L，以及马铃薯加工厂的年流量，估计如果在该厂址生产氢气，其价值可高达65,000美元/年。
The food processing industry produces highly concentrated, carbohydrate-rich wastewaters, but their potential for biological hydrogen production has not been extensively studied. Wastewaters were obtained from four different food-processing industries that had chemical oxygen demands of 9g/L (apple processing), 21g/L (potato processing), and 0.6 and 20g/L (confectioners A and B). Biogas produced from all four food processing wastewaters consistently contained 60% hydrogen, with the balance as carbon dioxide. Chemical oxygen demand (COD) removals as a result of hydrogen gas production were generally in the range of 5–11%. Overall hydrogen gas conversions were 0.7–0.9L-H2/L-wastewater for the apple wastewater, 0.1L/L for Confectioner-A, 0.4–2.0L/L for Confectioner B, and 2.1–2.8L/L for the potato wastewater. When nutrients were added to samples, there was a good correlation between hydrogen production and COD removal, with an average of 0.10±0.01L-H2/g-COD. However, hydrogen production could not be correlated to COD removal in the absence of nutrients or in more extensive in-plant tests at the potato processing facility. Gas produced by a domestic wastewater sample (concentrated 25×) contained only 23±8% hydrogen, resulting in an estimated maximum production of only 0.01L/L for the original, non-diluted wastewater. Based on an observed hydrogen production yield from the effluent of the potato processing plant of 1.0L-H2/L, and annual flows at the potato processing plant, it was estimated that if hydrogen gas was produced at this site it could be worth as much as $65,000/year.