Isotopie Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States

Zhen Wang; Shifeng Dai; Ellen A. Cowan

首页> 外文期刊>Environmental Science & Technology: ES&T >Isotopie Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States

【24h】

Isotopie Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States

机译：Isotopie Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Despite extensive research and technology to reduce the atmospheric emission of Pb from burning coal for power generation, minimal attention has been paid to Pb associated with coal ash disposal in the environment. This study investigates the isotopie signatures and output rates of Pb in fly ash disposal in China, India, and the United States. Pairwise comparison between feed coal and fly ash samples collected from coal-fired power plants from each country shows that the Pb isotope composition of fly ash largely resembles that of feed coal, and its isotopie distinction allows for tracing the release of Pb from coal fly ash into the environment. Between 2000 and 2020, approx. 236, 56, and 46 Gg Pb from fly ash have been disposed in China, India, and the U.S., respectively, posing a significant environmental burden. A Bayesian Pb isotope mixing model shows that during the past 40 to 70 years, coal fly ash has contributed significantly higher Pb (~26%) than leaded gasoline (~7%) to Pb accumulation in the sediments of five freshwater lakes in North Carolina, U.S.A. This implies that the release of disposed coal fly ash Pb at local and regional scales can outweigh that of other anthropogenic Pb sources.

著录项

来源
《Environmental Science & Technology: ES&T》 |2023年第33期|12259-12269|共11页
作者
Zhen Wang; Shifeng Dai; Ellen A. Cowan;
展开▼
作者单位

Nicholas School of the Environment, Duke University, Durham, North Carolina 27708, United States;

College of Geoscience and Survey Engineering, China University of Mining and Technology, Beijing 100083, China;

Department of Geological and Environmental Sciences, Appalachian State University, Boone, North Carolina 28608, United States;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
lead (Pb) outputs; coal combustion; fly ash disposal; isotopie compositions; mixing model; environmental impacts;

Isotopie Signatures and Outputs of Lead from Coal Fly Ash Disposal in China, India, and the United States

摘要

著录项

相关主题

期刊订阅