Anaerobic digestibility of two processed municipal-solid-waste materials

Biomass Pub Date : 1990-01-01 DOI:10.1016/0144-4565(90)90059-S

Christopher J. Rivard, Todd B. Vinzant, William S. Adney, Karel Grohmann, Michael E. Himmel

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引用次数: 30

Abstract

Municipal solid waste (MSW) has been demonstrated to be highly heterogeneous in composition and poses a significant disposal problem. Processing MSW recycles important materials such as aluminum, ferrous metals, and glass, as well as decreasing the heterogeneity. The composition and anaerobic digestibility of products from two different MSW processing operations were compared. Compositions of the two processed MSW materials were found to be similar, with cellulose constituting approximately 50% by weight. This processed MSW was determined to be nutritionally deficient for stable anaerobic-digestion studies. Adding synthetic formulations or pre-anaerobically digested municipal sewage sludge to the processed MSW supplies adequate nutrients for stable anaerobic digestion. The anaerobic digestibility of the two processed MSW feedstocks was compared using laboratory-scale semi-continuously stirred tank reactors. Using the synthetic or pre-digested sludge nutrient additions, at retention times of 14–20 days, resulted in similar digestion performance and 67–81% digestion of the biodegradable cellulose.

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两种处理过的城市固体废物的厌氧消化率

城市固体废物(MSW)已被证明是高度不均匀的组成，并提出了重大的处理问题。处理城市生活垃圾回收了重要的材料，如铝、黑色金属和玻璃，并减少了非均质性。比较了两种不同城市生活垃圾处理工艺产物的组成和厌氧消化率。两种处理过的城市生活垃圾材料的成分相似，纤维素约占重量的50%。在稳定的厌氧消化研究中，这种处理过的城市生活垃圾被确定为营养缺乏。在处理后的城市生活垃圾中加入合成配方或预厌氧消化的城市污水污泥，为稳定的厌氧消化提供足够的营养。采用实验室规模的半连续搅拌槽反应器，比较了两种处理后的生活垃圾原料的厌氧消化率。使用合成或预消化污泥营养添加剂，在14-20天的保留时间内，消化性能相似，可生物降解纤维素的消化率为67-81%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biomass

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