Abstract

The inadequate management of municipal solid waste can cause environmental and health issues, however the predominance of municipal biowaste and food waste make anaerobic digestion (AD) an attractive option for the treatment and recovery of organic matter. From AD two by-products with high potential use are obtained, such as methane gas (present in biogas) and the digestate, whilst the process contributes to a mitigation of the problems generated by final disposal. Nevertheless, the AD process is affected by different factors associated with environmental conditions, the substrate, inoculum and reactor and experimental configuration. This paper presents an analysis and reflection on the effect of the variables associated with these factors from a technological surveillance over the period 2009–2019. Among the most studied variables, are temperature (in the thermophilic and mesophilic ranges), pH, and nutrients, while evaluation on psychrophilic temperature conditions and the head space effect, are less studied. In addition, few studies have evaluated the simultaneous performance of different variables, which is of interest, when considered that their interaction can elucidate elements that lead to a greater approximation between the theoretical and experimental production of methane.

Graphic Abstract

中文翻译：

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确定影响城市生物垃圾和食物垃圾厌氧消化的因素和变量

摘要

对城市固体废物的管理不当会引起环境和健康问题，但是城市生物垃圾和食物垃圾的盛行使厌氧消化（AD）成为处理和回收有机物的有吸引力的选择。从公元方法中，获得了两种具有高潜在用途的副产品，例如甲烷气（存在于沼气中）和消化液，同时该工艺有助于减轻最终处置产生的问题。尽管如此，AD过程仍受到与环境条件，底物，接种物和反应器以及实验配置相关的不同因素的影响。本文提供了对这些因素相关变量的影响的分析和反思，这些因素来自2009-2019年期间的技术监视。在研究最多的变量中，温度（在嗜热和中温范围内），pH和营养素，而对嗜冷温度条件和顶空效应的评估则较少研究。此外，很少有研究评估不同变量的同时性能，这是很有意义的，因为考虑到它们之间的相互作用可以阐明导致甲烷的理论产量与实验产量之间更大程度近似的元素。

图形摘要