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生物质分类表征蔬菜废物高温好氧降解特征及其动力学描述

Keywords: 蔬菜废物,高温好氧降解,动力学,生物质组分

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Abstract:

通过对不同种类蔬菜废物的高温好氧降解试验,研究了其好氧降解过程中各种生物质组分的降解规律。结果表明,易降解组分如总糖、蛋白质、脂肪及半纤维素等,其降解率均较高,平均降解率为55.6%,而且降解主要集中在好氧降解前期(0 ̄6d),难降解组分主要在后期(6 ̄14d),平均降解率仅为20.9%。统计分析表明,各生物质组分高温好氧降解可用一级动力学描述,其中易降解组分的降解速率常数为0.090 ̄0.147d-1,难降解组分为0.025 ̄0.035d-1。不同生物质降解速率常数大小顺序为:脂肪>总糖>半纤维素>蛋白质>纤维素>木质素。

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