Scaled-up experimental biogas production from two agro-food waste mixtures having high inhibitory compound concentrations
Scaled-up experimental biogas production from two agro-food waste mixtures having high inhibitory compound concentrations
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DOI：
10.1016/j.renene.2015.03.007
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发表时间：
2015-09-01
期刊：
影响因子：
8.7
通讯作者：
Ruggeri, Bernardo
中科院分区：
文献类型：
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作者：
Battista, Federico;Fino, Debora;Ruggeri, Bernardo
普利亚（意大利）最丰富的农业食品废物来自橄榄油生产，例如，橄榄渣（OP）和橄榄磨坊废水（OMW），或来自乳品活动，例如，乳清。所有这些废物都具有酸性pH值（3.5 - 5.5）、高有机质挥发性固体、高于50克/升的a（VS）以及诸如总氮（TN）、总氨（TAN）和总磷（TP）等化学物质，这些化学物质在未经任何处理就释放到地下的情况下能够改变土壤的性质并污染含水层。存在两种类型的OP，但具有不同的化学特性：来自两相离心（OPII）的OP和来自三相离心（OPIII）的OP。这些主要区别在于它们的水含量，其在OPIII中更高，以及它们的多酚和氨含量。在目前的工作中，从橄榄油和乳制品生产的废物的两种混合物的制备和初步测试在一个50 L的分批消化器。然后，在放大的2m（3）厌氧反应器中实现了连续模式的试验。测试了两种进料：含有OPII的第一混合物和具有OPIII的第二混合物。测试在嗜温条件（35 ° C）下以连续模式进行，其中总固体（TS）含量为约10%w/w。包括OPIII的测试显示出1.23 L-CH4/L d的生产率，而OPII的测试为0.83 L-CH4/L d，这是由于有机物含量较高以及OPIII中的次要抑制化合物（氨和多酚）浓度的同时作用。(C)2015爱思唯尔有限公司版权所有。
The most abundant agro-food wastes in Puglia (Italy) are derived either from olive oil production, e.g., olive pomace (OP) and olive mill wastewaters (OMW), or from diary activity, e.g., milk whey. All of these wastes have an acidic pH (3.5-5.5), high organic matter volatile solids, a (VS) higher than 50 g/L, and chemical substances such as total nitrogen (TN), total ammonia (TAN) and total phosphorous (TP), which are able to alter the properties of the soil and pollute aquifers in scenarios where they were released into the ground without any treatment. Two types of OP exist but have different chemical characteristics: OP from a two phase centrifugation (OPII) and OP from a three phase centrifugation (OPIII). These differ primarily in their water content, which is higher in OPIII, and in their polyphenol and ammonia content. In the present work, two mixtures of wastes from olive oil and dairy production were prepared and initially tested in a 50 L batch digester. Then, in a scaled up 2 m(3) anaerobic reactor a test in continuous mode was realized. Two feeds were tested: a first mixture containing OPII and a second mixture with OPIII. The tests were conducted in mesophilic conditions (35 degrees C) with a total solid (TS) content of approximately 10% w/w in continuous mode. The test including OPIII showed a productivity of 1.23 L-CH4/L d against 0.83 L-CH4/L d for the test with OPII, as a consequence of the higher organic content and the simultaneous effect of the minor inhibitory compound (ammonia and polyphenols) concentration in OPIII. (C) 2015 Elsevier Ltd. All rights reserved.