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Anaerobic co-digestion of the organic fraction of municipal solid waste with several pure organic co-substrates

机译:城市生活垃圾有机部分与几种纯有机共底物的厌氧共消化

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摘要

A strategy to improve the operation of working anaerobic digesters treating the organic fraction of municipal solid wastes (OFMSW) to increase the biogas production is studied. It consists of increasing the organic loading rate of the digesters by adding extra organic matter from some problematic organic wastes. Vegetable oil (VO), animal fats (AF), cellulose and protein (protein) were used as pure co-substrates and the co-digestion anaerobic process was analysed in terms of the ultimate methane production, the methane production rate and the hydraulic residence time. The analysis of methane or biogas production led to different conclusions when expressing this parameter on a volatile solids basis or on a reactor volume basis. The need for a combined analysis is highlighted. In addition a new model to predict the biodegradability rate and evaluating the organic matter fraction susceptible to biodegradation was developed and proved to be suitable for assessing anaerobic digestion processes. All four co-substrates used led to some operative improvements. Vegetable oil is the most suitable co-substrate to be anaerobically digested with the OFMSW since all the parameters evaluated were greatly improved compared to the OFMSW digestion.
机译:研究了一种改善工作厌氧消化池操作的策略,该厌氧消化池处理城市固体废物的有机部分(OFMSW)以增加沼气的产量。它包括通过从一些有问题的有机废物中添加额外的有机物来提高消化池的有机负荷率。以植物油(VO),动物脂肪(AF),纤维素和蛋白质(蛋白质)为纯底物,并从最终甲烷生成量,甲烷生成速率和水力停留时间等方面分析了共消化厌氧过程。时间。当以挥发性固体或反应器体积为基础表达该参数时,对甲烷或沼气生产的分析得出不同的结论。强调需要进行组合分析。此外,还开发了一种新模型来预测生物降解率并评估易生物降解的有机物含量,并证明该模型适用于评估厌氧消化过程。所使用的全部四种共基质带来了一些操作上的改进。植物油是最适合用OFMSW厌氧消化的共底物,因为与OFMSW消化相比,所有评估的参数都得到了很大改善。

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    Ponsá Salas Sergio;

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  • 年度 2011
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  • 原文格式 PDF
  • 正文语种 eng
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