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Analysis of lead pollution control in anode slime micromorphology evolution induced by Mn2+ ions for cleaner production of zinc electrolysis
Zhang, Chen-Mu1; Shi, Yao1; Jiang, Lin-Hua3; Hu, Ying-Yan1; Li, Qiang1; Li, Hui-Quan1,2
2021-05-15
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume297Pages:10
Abstract

To explore cleaner production technologies to control lead (Pb) pollution caused by anode slime is a challenging issue for zinc electrolysis industry. The influence of manganese ions (Mn2+) on anode slime microtopography evolution and its relationship with Pb release of lead-based anodes was studied in detail. Scaling analysis was first introduced to quantitatively evaluate anode slime micromorphology evolution, and reveal its intrinsic growth mechanism induced by Mn2+ ions through parameterizing the morphological information of atomic force microscopy (AFM). Low Mn2+ concentrations (1-3 g/L) were found to induce the initial anode slime micromorphology to be compact, of which growth was revealed to be controlled by surface diffusion alone corresponding the exponent alpha = 0.95. Results of Scanning electron microscopy (SEM) and inductively coupled plasma mass spectrometry (ICP-MS) extended to 240 h of electrolysis supported that anode slime micromorphology evolution in this case could contribute to inhibiting lead pollution, and the release of Pb from lead-based anodes into electrolytes was controlled at 0.5 mg/L. As the Mn2+ concentration increased to 10 g/L, the initial anode slime micromorphology was found that the evolution trend from smooth to rough. And the changes in the growth mechanism from the surface diffusion control to volume or bulk diffusion control were found, which appeared as two distinct hierarchical features corresponding to static exponents alpha = 0.92 and alpha' = 0.55. In this case, excess Mn2+ ions inducing deteriorated anode slime micromorphology evolution was revealed, and large fluctuations of Pb2+ concentrations (1.2-1.5 mg/L) in electrolytes with prolonged electrolysis suggested that it was inadequate in inhibiting Pb2+ release. Scaling analysis for in-depth analysing and predicting the evolution trend of anode slime microtopography induced by Mn2+ ions has been established, thus new insights gained herein can contribute to exploring approaches to control lead pollution by cleaner production technologies during zinc electrolysis. (C) 2021 Published by Elsevier Ltd.

KeywordScaling Analysis Heavy Metal Pollution Cleaner Control Zinc Electrolysis Industry
DOI10.1016/j.jclepro.2021.126700
Language英语
WOS KeywordAtomic-force Microscopy ; Behavior ; Pb ; Ag ; Cu
Funding ProjectNational Key R&D Program of China[2018YFC1903305] ; National Natural Science Foundation of China[41701550] ; Major Science and Technology Program for Water Pollution Control and Treatment[2018ZX077010017]
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment
WOS IDWOS:000641457800015
PublisherELSEVIER SCI LTD
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48616
Collection中国科学院过程工程研究所
Corresponding AuthorShi, Yao; Jiang, Lin-Hua
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Cleaner Prod Technol Hydromet, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Chinese Res Inst Environm Sci, Res Ctr Cleaner Prod & Circular Econ, Beijing 100012, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Chen-Mu,Shi, Yao,Jiang, Lin-Hua,et al. Analysis of lead pollution control in anode slime micromorphology evolution induced by Mn2+ ions for cleaner production of zinc electrolysis[J]. JOURNAL OF CLEANER PRODUCTION,2021,297:10.
APA Zhang, Chen-Mu,Shi, Yao,Jiang, Lin-Hua,Hu, Ying-Yan,Li, Qiang,&Li, Hui-Quan.(2021).Analysis of lead pollution control in anode slime micromorphology evolution induced by Mn2+ ions for cleaner production of zinc electrolysis.JOURNAL OF CLEANER PRODUCTION,297,10.
MLA Zhang, Chen-Mu,et al."Analysis of lead pollution control in anode slime micromorphology evolution induced by Mn2+ ions for cleaner production of zinc electrolysis".JOURNAL OF CLEANER PRODUCTION 297(2021):10.
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