Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine
The recycling of waste lead paste is the focus of the lead recycling industry. Traditional fire smelting has issues with high energy consumption and heavy pollution. Wet conversion is a green and low-carbon recycling technology for waste lead paste, but its leaching efficiency and recycling of leach...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Energy Environmental Protection
2024-10-01
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| Series: | 能源环境保护 |
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| Online Access: | https://eep1987.com/en/article/5141 |
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| author | CHEN Biao HUANG Ming CAO Jing ZHANG Junfeng* |
| author_facet | CHEN Biao HUANG Ming CAO Jing ZHANG Junfeng* |
| author_sort | CHEN Biao |
| collection | DOAJ |
| description | The recycling of waste lead paste is the focus of the lead recycling industry. Traditional fire smelting has issues with high energy consumption and heavy pollution. Wet conversion is a green and low-carbon recycling technology for waste lead paste, but its leaching efficiency and recycling of leaching agent need further improvement. In this study, triethylenetetramine (TETA) was used as a leaching agent to investigate the cyclic leaching of PbSO_4 from waste lead paste. An effective leaching model was established using the response surface method, and the leaching reaction parameters were optimized. With a n(TETA/PbSO_4) ratio of 1.3, a reaction time of 11 minutes, a liquid-solid ratio of 2, and a reaction temperature of 30 ℃, the predicted leaching rate of PbSO_4 was 99.99%, achieving an actual leaching rate of 99.93%. The apparent activation energy of PbSO_4 leaching reaction was found to be 47.5 kJ/mol. Furthermore, high-purity PbCO_3 with an impurity content of 0.020 4% could be obtained from TETA-Pb solution by using Na_2CO_3. This process allows for the regeneration cycle of TETA while maintaining a leaching rate of PbSO_4 above 90% in 10 cycles. The results provide a reference for the high-value utilization of waste lead paste. |
| format | Article |
| id | doaj-art-398ef4fb1aa544878985e5123d7e43da |
| institution | OA Journals |
| issn | 2097-4183 |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Editorial Office of Energy Environmental Protection |
| record_format | Article |
| series | 能源环境保护 |
| spelling | doaj-art-398ef4fb1aa544878985e5123d7e43da2025-08-20T02:26:00ZzhoEditorial Office of Energy Environmental Protection能源环境保护2097-41832024-10-0138514715610.20078/j.eep.20240711Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramineCHEN Biao0HUANG Ming1CAO Jing2ZHANG Junfeng*3College of Environment and Resources, Xiangtan University, Xiangtan 411105, ChinaCollege of Environment and Resources, Xiangtan University, Xiangtan 411105, ChinaCollege of Chemistry, Xiangtan University, Xiangtan 411105, ChinaCollege of Environment and Resources, Xiangtan University, Xiangtan 411105, ChinaThe recycling of waste lead paste is the focus of the lead recycling industry. Traditional fire smelting has issues with high energy consumption and heavy pollution. Wet conversion is a green and low-carbon recycling technology for waste lead paste, but its leaching efficiency and recycling of leaching agent need further improvement. In this study, triethylenetetramine (TETA) was used as a leaching agent to investigate the cyclic leaching of PbSO_4 from waste lead paste. An effective leaching model was established using the response surface method, and the leaching reaction parameters were optimized. With a n(TETA/PbSO_4) ratio of 1.3, a reaction time of 11 minutes, a liquid-solid ratio of 2, and a reaction temperature of 30 ℃, the predicted leaching rate of PbSO_4 was 99.99%, achieving an actual leaching rate of 99.93%. The apparent activation energy of PbSO_4 leaching reaction was found to be 47.5 kJ/mol. Furthermore, high-purity PbCO_3 with an impurity content of 0.020 4% could be obtained from TETA-Pb solution by using Na_2CO_3. This process allows for the regeneration cycle of TETA while maintaining a leaching rate of PbSO_4 above 90% in 10 cycles. The results provide a reference for the high-value utilization of waste lead paste.https://eep1987.com/en/article/5141waste lead pastewet conversionlead sulfatetriethylenetetramineleaching |
| spellingShingle | CHEN Biao HUANG Ming CAO Jing ZHANG Junfeng* Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine 能源环境保护 waste lead paste wet conversion lead sulfate triethylenetetramine leaching |
| title | Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| title_full | Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| title_fullStr | Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| title_full_unstemmed | Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| title_short | Study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| title_sort | study on the cyclic leaching performance of lead sulfate from waste lead paste by triethylene tetramine |
| topic | waste lead paste wet conversion lead sulfate triethylenetetramine leaching |
| url | https://eep1987.com/en/article/5141 |
| work_keys_str_mv | AT chenbiao studyonthecyclicleachingperformanceofleadsulfatefromwasteleadpastebytriethylenetetramine AT huangming studyonthecyclicleachingperformanceofleadsulfatefromwasteleadpastebytriethylenetetramine AT caojing studyonthecyclicleachingperformanceofleadsulfatefromwasteleadpastebytriethylenetetramine AT zhangjunfeng studyonthecyclicleachingperformanceofleadsulfatefromwasteleadpastebytriethylenetetramine |