Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions
Methylmercury (MeHg) has remarkable toxicological effects on humans, plants, and other lives in the environment, which may restrict the comprehensive utilization of biomass source in view of possibly forming biohazardous waste. In this study, a kinetic study of MeHg degradation under UVB, UVA, natur...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2019/9585140 |
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| author | Yutao Zhang Xia Chen Qixia Jiang Xiaojuan Zhang Qiuyun Zhang |
| author_facet | Yutao Zhang Xia Chen Qixia Jiang Xiaojuan Zhang Qiuyun Zhang |
| author_sort | Yutao Zhang |
| collection | DOAJ |
| description | Methylmercury (MeHg) has remarkable toxicological effects on humans, plants, and other lives in the environment, which may restrict the comprehensive utilization of biomass source in view of possibly forming biohazardous waste. In this study, a kinetic study of MeHg degradation under UVB, UVA, natural light, and dark was carried out. The result showed that light radiation enhanced MeHg degradation but had no significant influence on the final balance between MeHg and inorganic mercury (Hg2+) in pure water. The balance is of great importance and can be used as a key fundamental to estimate MeHg cycling in other complicated aquatic environments. MeHg degradation was identified to be second-order reaction using the fitting optimization level of the regression equation, and the second-order rate constants were 1.61, 0.82, and 0.91 L·ng−1·d−1, half-lives were calculated to be 0.62, 1.3, and 1.08 d for UVB, UVA, and natural light, respectively. A possible MeHg degradation mechanism was proposed, and it could perfectly explain the results obtained in this paper and some previous studies. |
| format | Article |
| id | doaj-art-51f271f114f74c5b8208203041cfc255 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-51f271f114f74c5b8208203041cfc2552025-02-03T01:07:31ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/95851409585140Kinetic Study of Biodangerous Methylmercury Degradation under Various Light ConditionsYutao Zhang0Xia Chen1Qixia Jiang2Xiaojuan Zhang3Qiuyun Zhang4Engineering Technology Center of Control and Remediation of Soil Contamination of Provincial Science & Technology Bureau, Anshun University, Anshun, Guizhou 561000, ChinaCollege of Elemental Education, Jining University, Jining, Shandong 273100, ChinaZoucheng Senior School of Vocational Technology, Jining, Shandong 273500, ChinaEngineering Technology Center of Control and Remediation of Soil Contamination of Provincial Science & Technology Bureau, Anshun University, Anshun, Guizhou 561000, ChinaEngineering Technology Center of Control and Remediation of Soil Contamination of Provincial Science & Technology Bureau, Anshun University, Anshun, Guizhou 561000, ChinaMethylmercury (MeHg) has remarkable toxicological effects on humans, plants, and other lives in the environment, which may restrict the comprehensive utilization of biomass source in view of possibly forming biohazardous waste. In this study, a kinetic study of MeHg degradation under UVB, UVA, natural light, and dark was carried out. The result showed that light radiation enhanced MeHg degradation but had no significant influence on the final balance between MeHg and inorganic mercury (Hg2+) in pure water. The balance is of great importance and can be used as a key fundamental to estimate MeHg cycling in other complicated aquatic environments. MeHg degradation was identified to be second-order reaction using the fitting optimization level of the regression equation, and the second-order rate constants were 1.61, 0.82, and 0.91 L·ng−1·d−1, half-lives were calculated to be 0.62, 1.3, and 1.08 d for UVB, UVA, and natural light, respectively. A possible MeHg degradation mechanism was proposed, and it could perfectly explain the results obtained in this paper and some previous studies.http://dx.doi.org/10.1155/2019/9585140 |
| spellingShingle | Yutao Zhang Xia Chen Qixia Jiang Xiaojuan Zhang Qiuyun Zhang Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions Journal of Chemistry |
| title | Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions |
| title_full | Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions |
| title_fullStr | Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions |
| title_full_unstemmed | Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions |
| title_short | Kinetic Study of Biodangerous Methylmercury Degradation under Various Light Conditions |
| title_sort | kinetic study of biodangerous methylmercury degradation under various light conditions |
| url | http://dx.doi.org/10.1155/2019/9585140 |
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