Co-digestion of polylactide and kitchen garbage in hyperthermophilic and thermophilic continuous anaerobic process.
Co-digestion of polylactide and kitchen garbage in hyperthermophilic and thermophilic continuous anaerobic process.
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DOI：
10.1016/j.biortech.2012.02.064
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发表时间：
2012-05
影响因子：
11.4
通讯作者：
Feng Wang;T. Hidaka;H. Tsuno;J. Tsubota
中科院分区：
文献类型：
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作者：
Feng Wang;T. Hidaka;H. Tsuno;J. Tsubota
两个系列的两相厌氧系统，包括超高温（80°C）反应器和高温（55°C）反应器，喂入餐厨垃圾（KG）和聚丙交酯（PLA）的混合物，与单相高温反应器的整体性能进行了比较。结果表明，超高温条件下添加氨促进了PLA颗粒向乳酸的转化。超高温处理系统在PLA转化率和甲烷转化率方面相对于控制系统具有优势。在有机负荷率（OLR）为10.3gCOD/（Lday）下，两相体系的PLA转化率分别为82.0%和85.2%，高于对照体系（63.5%）。两相系统的甲烷转化率分别为82.9%和80.8%，高于控制系统的70.1%。微生物群落分析表明，超高温处理很容易安装到传统的高温厌氧消化装置上，无需接种特殊细菌。
Two series of two-phase anaerobic systems, consisting of a hyperthermophilic (80°C) reactor and a thermophilic (55°C) reactor, fed with a mixture of kitchen garbage (KG) and polylactide (PLA), was compared with a single-phase thermophilic reactor for the overall performance. The result indicated that ammonia addition under hyperthermophilic condition promoted the transformation of PLA particles to lactic acid. The systems with hyperthermophilic treatment had advantages on PLA transformation and methane conversion ratio to the control system. Under the organic loading rate (OLR) of 10.3gCOD/(Lday), the PLA transformation ratios of the two-phase systems were 82.0% and 85.2%, respectively, higher than that of the control system (63.5%). The methane conversion ratios of the two-phase systems were 82.9% and 80.8%, respectively, higher than 70.1% of the control system. The microbial community analysis indicated that hyperthermophilic treatment is easily installed to traditional thermophilic anaerobic digestion plants without inoculation of special bacteria.