Life cycle assessment for waste acid treatment in zinc smelting

被引：2
|
作者：
Hu, Ying-yan [1 ]
Li, Min [1 ]
Wu, Wei-guo [1 ]
Ke, Yong [2 ,3 ]
Liu, Lu-jing [4 ,5 ]
Wang, Xue-liang [1 ]
机构：
[1] China Enfi Engn Corp, Beijing 100038, Peoples R China
[2] Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[3] Chinese Natl Engn Res Ctr Control & Treatment Hea, Changsha 410083, Peoples R China
[4] Chinese Acad Sci, Natl Sci Lib, Beijing 100190, Peoples R China
[5] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2022年 / 32卷 / 11期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
zinc smelting; waste acid treatment; life cycle assessment; environmental impact; RECOVERY; COPPER; SULFIDE; LEAD; SEPARATION; RESIDUE; METALS; WATER; MODEL;
D O I：
10.1016/S1003-6326(22)66061-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Lift cycle assessment (LCA) methodology was applied to evaluating and comparing two waste acid disposal processes in zinc smelting. The results indicate that environmental impacts of gas-liquid vulcanization technologies are human toxicity, abiotic depletion potential, and global warming risk, which are mainly caused in neutralizingevaporating-crystallization unit and electrodialysis unit. As for traditional lime neutralization method, vulcanization unit is the main factor. In this regard, the total environmental impact of traditional lime neutralization method is much higher than that of gas-liquid vulcanization technologies. Furthermore, the sensitive analysis shows that electricity and sodium sulfide (60%) are sensitive factors in two waste acid disposal technologies. In addition, the total cost of disposing a functional unit waste acid in traditional lime neutralization process is nearly 27 times that of the gas-liquid vulcanization waste acid disposal technologies.
引用
收藏
页码：3822 / 3834
页数：13
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