Initial Cost Barrier of Ammonia Control in Central China
Initial Cost Barrier of Ammonia Control in Central China
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DOI：
10.1029/2019gl084351
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发表时间：
2019-12
影响因子：
5.2
通讯作者：
Mingming Zheng;Yuhang Wang;J. Bao;Lianxin Yuan;Huang Zheng;Yingying Yan;Dantong Liu;M. Xie;Shaofei Kong
中科院分区：
文献类型：
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作者：
Mingming Zheng;Yuhang Wang;J. Bao;Lianxin Yuan;Huang Zheng;Yingying Yan;Dantong Liu;M. Xie;Shaofei Kong
氨控制作为降低颗粒物浓度的一种措施越来越受到关注。对2015年9月至2016年8月期间中国中部观测数据的建模分析显示，颗粒物pH和质量对氨排放的响应明显不对称。当NHx（NH3 + NH 4+）变化±80%时，相应的ΔpH值分别为+0.5和-3.0，相应的颗粒NH 4+变化分别为+2.62%和-61.8%。这种不对称性意味着存在临界总氨浓度，高于该临界总氨浓度，颗粒pH和质量对氨控制不敏感。对观测数据的分析表明，临界总氨浓度为-25%。对于湖北省来说，NHx减少25%的估计成本为1.4 - 3.2亿美元，这是在中国中部地区氨控制可以有效影响颗粒物pH值和质量之前的初始成本障碍。随着NOx和SO2排放量的减少，这一成本障碍将增加。
Ammonia control has received increasing attention as a measure to decrease particulate concentrations. Modeling analysis of observation data from central China over the period of September 2015 to August 2016 shows clear asymmetric responses of particulate pH and mass to ammonia emissions. With a change of ±80% of NHx (NH3 + NH4+), the corresponding ΔpH are +0.5 and −3.0, respectively, and the corresponding particulate NH4+ changes are +2.62% and −61.8%, respectively. This asymmetry implies that there is a Critical Total Ammonia Concentration, above which particulate pH and mass are insensitive to ammonia control. Analysis of the observation data suggests that the Critical Total Ammonia Concentration is −25%. The estimated cost for an NHx reduction of 25% is $140 – 320 million for Hubei province, which is the initial cost barrier before ammonia control can effectively affect particulate pH and mass in central China. This cost barrier will increase as NOx and SO2 emissions decrease.