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Effects of Recirculation of Exhaust Air in Rotary Drum Composter on Composting Properties and Energy Consumption
Waste and Biomass Valorization ( IF 3.2 ) Pub Date : 2020-09-26 , DOI: 10.1007/s12649-020-01249-1
Cenk Soyöz , Kamil Ekinci , Şeref Kilic

Rotary drum composting appears to be a good option for decentralized composting. While aiming to transform the feedstock organic matter into stable humic compounds, composting should also take into account energy conservation. This experimental study quantified the impacts of exhaust air of a 0.38 m3 fully-automatic rotary drum composter on output parameters, decomposition rates, and energy consumption per loss of organic matter. Decomposition rates of labile and recalcitrant parts were evaluated using a multi-component kinetic model. The recirculation processes of exhaust air in the rotary drum composting enhanced the decomposition rates and maintained a better heat retention. In particular, the rotary drum composter with the dynamic gas recirculation system led to more matured material according to final C/N and \({\mathrm{NH}}_{4}^{+}-\mathrm{N}/{\mathrm{NO}}_{3}^{-}-\mathrm{N}\) ratios, and germination index as well as to less energy consumption per loss of organic matter in reaching the stabile humus compounds in the final material as fast as possible.

Graphic Abstract



中文翻译:

旋转鼓式堆肥机中废气再循环对堆肥特性和能耗的影响

旋转鼓式堆肥似乎是分散式堆肥的好选择。旨在将原料有机物转化为稳定的腐殖质化合物时,堆肥还应考虑到节能问题。这项实验研究量化了0.38 m 3的废气的影响全自动旋转鼓式混合机,可提高输出参数,分解速率和每损失有机物的能耗。使用多组分动力学模型评估了不稳定和难降解部分的分解速率。旋转鼓式堆肥中废气的再循环过程提高了分解速率并保持了更好的保热性。特别是,带有动态气体再循环系统的转鼓堆肥机根据最终C / N和\({\ mathrm {NH}} _ {4} ^ {+}-\ mathrm {N} / { \ mathrm {NO}} _ {3} ^ {-}-\ mathrm {N} \)的比率,发芽指数,以及达到最终物料中稳定的腐殖质化合物时每损失一次有机质所消耗的能量,即尽可能快。

图形摘要

更新日期:2020-09-26
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