Combined use of nitrification inhibitor and struvite crystallization to reduce the NH3 and N2O emissions during composting
Combined use of nitrification inhibitor and struvite crystallization to reduce the NH3 and N2O emissions during composting
复制标题
硝化抑制剂与鸟粪石结晶联合使用减少堆肥过程中NH3和N2O的排放
DOI：
10.1016/j.biortech.2016.01.089
复制
发表时间：
2016-10-01
影响因子：
11.4
通讯作者：
Schuchardt, Frank
中科院分区：
文献类型：
--
作者：
Jiang, Tao;Ma, Xuguang;Schuchardt, Frank
鸟粪石结晶（SCP）与硝化抑制剂（双氰胺，DCD）结合使用，以减少堆肥过程中NH3和N2 O的排放。MgO和H3 PO 4以初始氮的15%（摩尔/摩尔）的比率加入，DCD分别以初始氮的0%、2.5%、5.0%、7.5%和10%（w/w）的比率加入。结果表明，SCP和DCD联合使用无植物毒素。SCP可以显著减少NH3损失45- 53%，但DCD不能。当DCD含量大于50 mg kg（-1）时，可显著抑制硝化作用，使N2 O排放量减少76.1- 77.6%。DCD在高温阶段降解较快，高温和高游离氨含量会抑制硝化作用，建议在成熟期施用2.5%的DCD。(C)2016爱思唯尔有限公司版权所有
Struvite crystallization (SCP) is combined with a nitrification inhibitor (dicyandiamide, DCD) to mitigate the NH3 and N2O emission during composting. The MgO and H3PO4 were added at a rate of 15% (mole/mole) of initial nitrogen, and the DCD was added at rates of 0%, 2.5%, 5.0%, 7.5% and 10% (w/w) of initial nitrogen respectively. Results showed that the combination use of SCP and DCD was phytotoxin free. The SCP could significantly reduce NH3 losses by 45-53%, but not the DCD. The DCD significantly inhibits nitrification when the content was higher than 50 mg kg(-1), and that could reduce the N2O emission by 76.1-77.6%. The DCD degraded fast during the thermophilic phase, as the nitrification will be inhibited by the high temperature and high free ammonia content in this stage, the DCD was suggested to be applied in the maturing periods by 2.5% of initial nitrogen. (C) 2016 Elsevier Ltd. All rights reserved.