Trace element supplementation in the biogas production from wheat stillage--optimization of metal dosing.
Trace element supplementation in the biogas production from wheat stillage--optimization of metal dosing.
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DOI：
10.1016/j.biortech.2014.02.124
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发表时间：
2014-09
影响因子：
11.4
通讯作者：
T. Schmidt;M. Nelles;F. Scholwin;Jürgen Pröter
中科院分区：
文献类型：
--
作者：
T. Schmidt;M. Nelles;F. Scholwin;Jürgen Pröter
本研究建立了小麦秸秆厌氧消化的微量元素投加策略。间歇式CSTR反应器在某些情况下以含硫底物麦渣为原料，在微量元素缺乏的情况下运行。在启动期间补充微量元素后，Fe、Ni、Co、Mo和W中的一种元素在一个消化池中耗尽，同时仍在增加其他元素，以确定每种元素的最低需要量。铁和镍的缺乏导致挥发性脂肪酸的快速积累，而钴和钨的作用似乎是长期的。根据结果，有可能减少微量元素的用量，这对经济和环境方面是积极的。
A trace element dosing strategy for the anaerobic digestion of wheat stillage was developed in this study. Mesophilic CSTR reactors were operated with the sulfuric substrate wheat stillage in some cases under trace element deficiency. After supplementing trace elements during the start-up, one of the elements of Fe, Ni, Co, Mo, and W were depleted in one digester while still augmenting the other elements to determine minimum requirements for each element. The depletion of Fe and Ni resulted in a rapid accumulation of volatile fatty acids while Co and W seem to have a long-term effect. Based on the results it was possible to reduce the dosing of trace elements, which is positive with reference to economic and environmental aspects.