Essential Role of Trace Elements in Continuous Anaerobic Digestion of Food Waste
Essential Role of Trace Elements in Continuous Anaerobic Digestion of Food Waste
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DOI：
10.1016/j.proenv.2012.10.014
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Z. Lei;W. Ouyang;Aimin Lia
中科院分区：
文献类型：
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作者：
Z. Lei;W. Ouyang;Aimin Lia
本研究的目的是探索在半连续单级反应器中通过添加微量元素实现餐厨垃圾长期可持续厌氧消化的可能性。与长期运行后的餐厨垃圾厌氧消化失败相比，添加模型微量元素溶液可以明显提高工艺性能。虽然不能通过添加模型微量元素溶液来实现餐厨垃圾的可持续连续厌氧消化，但工艺性能与连续运行期间微量元素分布的相关性表明，性能下降的原因很可能是微量元素浓度的下降，特别是Co、Mo、Ni和Fe。这一发现有望为食物垃圾的可持续厌氧消化提供一种有前景的策略。
The purpose of this study is to explore the possibility of long-term sustainable anaerobic digestion of food waste in semi-continuous single-stage reactors by supplementing trace elements. Compared with the failure of anaerobic digestion of food waste after prolonged operation, a clearly enhancement of process performance was observed by supplementing a model trace element solution. Although the sustainable continuous anaerobic digestion of food waste could not be achieved by supplementing a model trace element solution, the correlation of process performance and trace element profile during continuous operating period revealed that the declining performance was highly likely due to the decreasing trace element concentrations, especially Co, Mo, Ni and Fe. This finding was expected to provide a promising strategy for sustainable anaerobic digestion of food waste.