Global status of dioxin emission and China’s role in reducing the emission

焚化 环境科学 中国 环境保护 发展中国家 环境工程 废物管理 地理 工程类 经济增长 经济 考古
作者
Rongrong Lei,Zhenci Xu,Ying Xing,Wenbin Liu,Xiaolin Wu,Tianqi Jia,Shurui Sun,Yunchen He
出处
期刊:Journal of Hazardous Materials [Elsevier BV]
卷期号:418: 126265-126265 被引量:57
标识
DOI:10.1016/j.jhazmat.2021.126265
摘要

Abstract The global status of dioxin emissions across 150 countries/regions were compiled in this study. China, the major emitter of dioxin and the largest developing country, was chosen as an example to illustrate its emission reductions. The global dioxin emissions were about 97.0 kg TEQ/year, Asia and Africa emitted the most dioxins among the continents. Globally, open burning processes were the most important sources of dioxins. Dioxin emissions in developed countries have remained at low and stable level, while those in developing countries have remained at relatively high level or have continued to increase in recent years. It can be speculated that the global dioxin emissions will increase first and then decrease in the future. Chinese dioxin emissions were stable around 9 kg toxic equivalent (TEQ) in recent years, while 17 subcategories are the key sources of dioxin control in the future. Moreover, according to analysis toward China’s dioxin emission trend and sources, there is a large space for dioxins reduction in industries such as metal production, waste incineration and disposal. The results indicated that there is at least 30–70% of reduction scope in China based on three scenarios, and this will reduce the world's annual dioxin emissions by 2.7–6.8%.

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