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Anaerobic Biodegradability of Agricultural Renewable Fibers

机译：农业可再生纤维的厌氧生物降解性

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Natural fiber-based paper and paperboard products are likely disposed of in municipal wastewater, composting, or landfill after an intended usage. However, there are few studies reporting anaerobic sludge digestion and biodegradability of agricultural fibers although the soiled sanitary products, containing agricultural fibers, are increasingly disposed of in municipal wastewater or conventional landfill treatment systems, in which one or more unit operations are anaerobic digestion. We conducted a series of biodegradation studies using corn stalk and wheat straw pulp fibers to elucidate biodegradability and biodegradation kinetics under anaerobic sludge digestion conditions. The degradation results indicate that corn stalk achieved 78.4% biodegradation and wheat straw 72.4% biodegradation, all within 56 days of the study. In comparison, corn stalk generated more biogas than wheat straw. Unlike any raw agricultural crop residues, anaerobic biodegradation of agricultural fibers is largely unaffected by the presence of lignin, physical sizes of crop stalks, and plant cell wall constitutes.
机译：天然纤维基纸和纸板产品可能会在预定用途后作为市政废水，堆肥或垃圾填埋场处置。然而，很少有研究报告对农业纤维进行厌氧污泥消化和生物降解性，尽管含有农业纤维的被污染的卫生产品越来越多地用于市政废水或传统的垃圾填埋处理系统中，在这些系统中，一个或多个单元操作是厌氧消化。我们使用玉米秸秆和麦草浆纤维进行了一系列生物降解研究，以阐明厌氧污泥消化条件下的生物降解性和生物降解动力学。降解结果表明，在研究的56天内，玉米秸秆的生物降解率为78.4％，麦秸秆的生物降解率为72.4％。相比之下，玉米秸秆比小麦秸秆产生更多的沼气。与任何未加工的农作物残留物不同，木质素的存在，农作物秸秆的物理尺寸和植物细胞壁的构成在很大程度上不会影响农业纤维的厌氧生物降解。

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