Dissociation mechanism of particulate matter containing arsenic and lead in smelting flue gas by pyrite

被引：31

作者：

Yao, Wenming ^{[1
]}

Min, Xiaobo ^{[1
,2
]}

Li, Qingzhu ^{[1
,2
]}

Wang, Qingwei ^{[1
,2
,3
]}

Liu, Hui ^{[1
,2
]}

Liang, Yanjie ^{[1
,2
]}

Li, Kaizhong ^{[1
]}

Zhao, Zongwen ^{[1
]}

Qu, Shengli ^{[3
]}

Dong, Zhunqin ^{[3
]}

机构：

[1] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China

[2] Chinese Natl Engn Res Ctr Control & Treatment Hea, Changsha 410083, Peoples R China

[3] Shandong Humon Smelting Co Ltd, Yantai 264109, Peoples R China

来源：

JOURNAL OF CLEANER PRODUCTION | 2020年 / 259卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Smelting flue gas; Particulate matter; Lead arsenate; Lead arsenite; Pyrite; CONDENSATION BEHAVIOR; ADSORPTION; REMOVAL; PBS; FACILE; VAPORS; WATER; SO2; H2O; XPS;

D O I：

10.1016/j.jclepro.2020.120875

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Copper smelters are the main anthropogenic source of arsenic. In this study, the formation pathway of arsenic-lead particulate matter in a heat recovery steam generator (HRSG) of a copper smelting facility were investigated. Lead monoxide and arsenic trioxide reacted easily with each other to form particulate matter with a high arsenic content, while the relative content of lead arsenate and lead arsenite in the particulate matter varied with the fluctuation of the smelting flue gas. The dissociation mechanism by pyrite of particulate matter containing arsenic and lead were also studied for the first time. The structures and components of the resultant composites were characterized by ion chromatography plasma optical emission spectrometry, X-ray diffraction, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Pyrite promoted the dissociation of lead arsenate and lead arsenite due to the formation of more lead sulfate, and then further inhibited the formation of lead arsenate and lead arsenite. This study is of great significance for the control of arsenic in flues. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：8

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