State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
Bioresour Technol. 2015 Mar;180:192-9. doi: 10.1016/j.biortech.2014.12.023. Epub 2014 Dec 23.
Anaerobic co-digestion (A co-D) performance of Phragmites australis, feces and kitchen waste with addition of clinoptilolite (one main kind of zeolite) was investigated to evaluate the improvement of biogas/methane production and internal mechanism of nitrogen and organics control. A better biogas/methane production was observed by 10% clinoptilolite (v/v) than bentonite and diatomite, with the shortest lag phase of 0.070d(-1), the max rate of 15.89L/(kgVSday) and ultimate biogas production of 308.2L/kgVS as the modified Gompertz equation predicted. Accordingly, the content of methane in the biogas was increased from 44.10% to 65.30%. Furthermore, the clinoptilolite inhibited the acidification of digestion liquid (optimum pH 7.0-7.5) and enhanced the VFAs (acetic acid, propionic acid and butyric acid) destruction. Moreover, 10% of clinoptilolite optimally enhanced the microbial utilization of Ca(2+)/Mg(2+), controlled the C/N ratio, and improved the biogas production as well as NH3-N/NO3-N inhibition efficiency.
添加沸石（沸石的一种主要类型）对芦苇、粪便和厨余垃圾的厌氧共消化（A co-D）性能进行了研究，以评估沼气/甲烷产量的提高和氮和有机物控制的内部机制。与膨润土和硅藻土相比，添加 10%（v/v）沸石的沼气/甲烷产量更好，比伏尔特曼兰格方程预测的滞后期最短为 0.070d(-1)，最大速率为 15.89L/（kgVS·天），最终沼气产量为 308.2L/kgVS。因此，沼气中甲烷的含量从 44.10%增加到 65.30%。此外，沸石抑制了消化液的酸化（最佳 pH 值为 7.0-7.5），并增强了 VFAs（乙酸、丙酸和丁酸）的破坏。此外，10%的沸石最佳地增强了微生物对 Ca(2+)/Mg(2+)的利用，控制了 C/N 比，提高了沼气产量，以及 NH3-N/NO3-N 的抑制效率。
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