A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste: Key issue of impurities removal

Wenhao Yu; Peiyuan Zhang; Jiakuan Yang; Mingyang Li; Yuchen Hu; Sha Liang; Junxiong Wang; Suyuan Li; Keke Xiao; Huijie Hou; Jingping Hu; R. Vasant Kumar

doi:10.1016/j.jclepro.2018.11.133

A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste: Key issue of impurities removal

Wenhao Yu, Peiyuan Zhang, Jiakuan Yang^*, Mingyang Li, Yuchen Hu, Sha Liang, Junxiong Wang, Suyuan Li, Keke Xiao, Huijie Hou, Jingping Hu, R. Vasant Kumar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, including efficient desulfurization and pH-controlled acid leaching, is proposed. Effects of two typical desulfurizers (NaOH and Na₂CO₃) on desulfurization efficiency and removals of major impurities (Ba and Fe elements) were comparatively investigated for the first time. NaOH was more effective than Na₂CO₃ with a higher desulfurization efficiency of 99.3 wt% in 10 min. Approximately 26.2 wt% of BaSO₄ in the raw spent lead paste was converted into BaCO₃ in the Na₂CO₃ desulfurization system, causing more Ba element entered into the acid leaching solution. The significant decrease of pH in the acid leaching solution caused a high concentration of Fe element impurity, which was efficiently removed by further pH adjustment. The optimal conditions were determined to be: a NaOH/PbSO₄ molar ratio of 2.0 in the desulfurization step, a HNO₃/Pb molar ratio of 2.2 in the acid leaching step, and followed by adjusting the pH of the acid leaching solution to about 3.48. Up to 98.4 wt% of the Pb was recovered, while 99.8 wt% of Ba and 99.9 wt% of Fe element impurities were removed. The obtained low-impurity lead nitrate solution was further converted into high-purity PbCO₃ and α-PbO products, providing a viable alternative for the recovery of the spent lead pastes.

Original language	English
Pages (from-to)	1534-1544
Number of pages	11
Journal	Journal of Cleaner Production
Volume	210
DOIs	https://doi.org/10.1016/j.jclepro.2018.11.133
State	Published - 10 Feb 2019
Externally published	Yes

Keywords

Acid leaching
Batteries spent lead paste
Desulfurization
Impurities removal
Recycling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jclepro.2018.11.133

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title = "A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste: Key issue of impurities removal",

abstract = "Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, including efficient desulfurization and pH-controlled acid leaching, is proposed. Effects of two typical desulfurizers (NaOH and Na2CO3) on desulfurization efficiency and removals of major impurities (Ba and Fe elements) were comparatively investigated for the first time. NaOH was more effective than Na2CO3 with a higher desulfurization efficiency of 99.3 wt% in 10 min. Approximately 26.2 wt% of BaSO4 in the raw spent lead paste was converted into BaCO3 in the Na2CO3 desulfurization system, causing more Ba element entered into the acid leaching solution. The significant decrease of pH in the acid leaching solution caused a high concentration of Fe element impurity, which was efficiently removed by further pH adjustment. The optimal conditions were determined to be: a NaOH/PbSO4 molar ratio of 2.0 in the desulfurization step, a HNO3/Pb molar ratio of 2.2 in the acid leaching step, and followed by adjusting the pH of the acid leaching solution to about 3.48. Up to 98.4 wt% of the Pb was recovered, while 99.8 wt% of Ba and 99.9 wt% of Fe element impurities were removed. The obtained low-impurity lead nitrate solution was further converted into high-purity PbCO3 and α-PbO products, providing a viable alternative for the recovery of the spent lead pastes.",

keywords = "Acid leaching, Batteries spent lead paste, Desulfurization, Impurities removal, Recycling",

author = "Wenhao Yu and Peiyuan Zhang and Jiakuan Yang and Mingyang Li and Yuchen Hu and Sha Liang and Junxiong Wang and Suyuan Li and Keke Xiao and Huijie Hou and Jingping Hu and Kumar, {R. Vasant}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2019",

month = feb,

day = "10",

doi = "10.1016/j.jclepro.2018.11.133",

language = "英语",

volume = "210",

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TY - JOUR

T1 - A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste

T2 - Key issue of impurities removal

AU - Yu, Wenhao

AU - Zhang, Peiyuan

AU - Yang, Jiakuan

AU - Li, Mingyang

AU - Hu, Yuchen

AU - Liang, Sha

AU - Wang, Junxiong

AU - Li, Suyuan

AU - Xiao, Keke

AU - Hou, Huijie

AU - Hu, Jingping

AU - Kumar, R. Vasant

PY - 2019/2/10

Y1 - 2019/2/10

N2 - Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, including efficient desulfurization and pH-controlled acid leaching, is proposed. Effects of two typical desulfurizers (NaOH and Na2CO3) on desulfurization efficiency and removals of major impurities (Ba and Fe elements) were comparatively investigated for the first time. NaOH was more effective than Na2CO3 with a higher desulfurization efficiency of 99.3 wt% in 10 min. Approximately 26.2 wt% of BaSO4 in the raw spent lead paste was converted into BaCO3 in the Na2CO3 desulfurization system, causing more Ba element entered into the acid leaching solution. The significant decrease of pH in the acid leaching solution caused a high concentration of Fe element impurity, which was efficiently removed by further pH adjustment. The optimal conditions were determined to be: a NaOH/PbSO4 molar ratio of 2.0 in the desulfurization step, a HNO3/Pb molar ratio of 2.2 in the acid leaching step, and followed by adjusting the pH of the acid leaching solution to about 3.48. Up to 98.4 wt% of the Pb was recovered, while 99.8 wt% of Ba and 99.9 wt% of Fe element impurities were removed. The obtained low-impurity lead nitrate solution was further converted into high-purity PbCO3 and α-PbO products, providing a viable alternative for the recovery of the spent lead pastes.

AB - Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, including efficient desulfurization and pH-controlled acid leaching, is proposed. Effects of two typical desulfurizers (NaOH and Na2CO3) on desulfurization efficiency and removals of major impurities (Ba and Fe elements) were comparatively investigated for the first time. NaOH was more effective than Na2CO3 with a higher desulfurization efficiency of 99.3 wt% in 10 min. Approximately 26.2 wt% of BaSO4 in the raw spent lead paste was converted into BaCO3 in the Na2CO3 desulfurization system, causing more Ba element entered into the acid leaching solution. The significant decrease of pH in the acid leaching solution caused a high concentration of Fe element impurity, which was efficiently removed by further pH adjustment. The optimal conditions were determined to be: a NaOH/PbSO4 molar ratio of 2.0 in the desulfurization step, a HNO3/Pb molar ratio of 2.2 in the acid leaching step, and followed by adjusting the pH of the acid leaching solution to about 3.48. Up to 98.4 wt% of the Pb was recovered, while 99.8 wt% of Ba and 99.9 wt% of Fe element impurities were removed. The obtained low-impurity lead nitrate solution was further converted into high-purity PbCO3 and α-PbO products, providing a viable alternative for the recovery of the spent lead pastes.

KW - Acid leaching

KW - Batteries spent lead paste

KW - Desulfurization

KW - Impurities removal

KW - Recycling

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U2 - 10.1016/j.jclepro.2018.11.133

DO - 10.1016/j.jclepro.2018.11.133

M3 - 文章

AN - SCOPUS:85059332115

SN - 0959-6526

VL - 210

SP - 1534

EP - 1544

JO - Journal of Cleaner Production

JF - Journal of Cleaner Production

ER -

A low-emission strategy to recover lead compound products directly from spent lead-acid battery paste: Key issue of impurities removal

Abstract

Keywords

UN SDGs

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