Ammonia emissions and biodegradation of organic carbon during sewage sludge composting with different extra carbon sources
Ammonia emissions and biodegradation of organic carbon during sewage sludge composting with different extra carbon sources
复制标题
不同额外碳源污泥堆肥过程中氨排放及有机碳生物降解
DOI：
10.1016/j.ibiod.2013.04.013
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发表时间：
2013-11-01
影响因子：
4.8
通讯作者：
Wu, Chuandong
中科院分区：
文献类型：
--
作者：
Li, Yunbei;Li, Weiguang;Wu, Chuandong
堆肥过程中的氨排放导致农业生产价值降低，还可能污染空气。为研究不同碳源对堆肥中氨排放的影响，采用葡萄糖、蔗糖和秸秆粉3种不同碳源进行了6个堆肥试验。氨累积挥发量从3.11 g/kg（R6）降低到2.46 g/kg（R1）、2.17 g/kg（R2）、2.23 g/kg（R4）和1.93 g/kg（R5）。与对照相比，R3（3.15 g/kg）的混合物中，氨的排放和碳降解没有观察到显着差异，这是与秸秆粉单独修改。蔗糖和秸秆粉的共同添加导致最低的氨排放量。根据这些结果，较高的C/N比并不一定表明减少氨排放的有效解决方案，并且并非所有容易获得的碳化合物都有助于减少氨排放。蔗糖的添加促进了氨排放强度阶段有机碳的分解，秸秆和蔗糖的组合延长了这种促进作用。因此，蔗糖和秸秆粉的共同添加使得有可能通过氮固定来大幅减少氨的排放。(C)2013爱思唯尔有限公司保留所有权利。
Ammonia emissions during composting result in the reduced value of agronomic production and can also pollute the air. To evaluate the influence of various carbon sources on ammonia emissions, six composting experiments were carried out with different amendments of carbon sources (glucose, sucrose and straw powder). The cumulative ammonia volatilizations were reduced from 3.11 g/kg (R6) to 2.46 g/kg (R1), 2.17 g/kg (R2), 2.23 g/kg (R4) and 1.93 g/kg (R5). Compared to the control, no significant difference of ammonia emissions and carbon degradation was observed for the mixture of R3 (3.15 g/kg), which was amended with straw powder alone. The co-addition of sucrose and straw powder led to the lowest ammonia emissions. According to these results, a higher C/N ratio did not necessarily indicate an effective solution for reducing ammonia emissions, and not all readily available carbon compounds were helpful in reducing ammonia emissions. The addition of sucrose promoted the decomposition of organic carbon during the intensive stage of ammonia emissions, and the combination of straw and sucrose prolonged this promotion. Thus, the co-addition of sucrose and straw powder made it possible to reduce ammonia emissions drastically by nitrogen immobilization. (C) 2013 Elsevier Ltd. All rights reserved.