Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review
Mercury (Hg) contamination is acknowledged as a global issue and has generated concerns globally due to its toxicity and persistence. Tunable surface-active sites (SASs) are one of the key features of efficient BCs for Hg remediation, and detailed documentation of their interactions with metal ions...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323014203 |
| _version_ | 1797350594803924992 |
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| author | Muhammad Rizwan Ghulam Murtaza Faisal Zulfiqar Anam Moosa Rashid Iqbal Zeeshan Ahmed Imran Khan Kadambot H.M. Siddique Lijian Leng Hailong Li |
| author_facet | Muhammad Rizwan Ghulam Murtaza Faisal Zulfiqar Anam Moosa Rashid Iqbal Zeeshan Ahmed Imran Khan Kadambot H.M. Siddique Lijian Leng Hailong Li |
| author_sort | Muhammad Rizwan |
| collection | DOAJ |
| description | Mercury (Hg) contamination is acknowledged as a global issue and has generated concerns globally due to its toxicity and persistence. Tunable surface-active sites (SASs) are one of the key features of efficient BCs for Hg remediation, and detailed documentation of their interactions with metal ions in soil medium is essential to support the applications of functionalized BC for Hg remediation. Although a specific active site exhibits identical behavior during the adsorption process, a systematic documentation of their syntheses and interactions with various metal ions in soil medium is crucial to promote the applications of functionalized biochars in Hg remediation. Hence, we summarized the BC's impact on Hg mobility in soils and discussed the potential mechanisms and role of various SASs of BC for Hg remediation, including oxygen-, nitrogen-, sulfur-, and X (chlorine, bromine, iodine)- functional groups (FGs), surface area, pores and pH. The review also categorized synthesis routes to introduce oxygen, nitrogen, and sulfur to BC surfaces to enhance their Hg adsorptive properties. Last but not the least, the direct mechanisms (e.g., Hg- BC binding) and indirect mechanisms (i.e., BC has a significant impact on the cycling of sulfur and thus the Hg-soil binding) that can be used to explain the adverse effects of BC on plants and microorganisms, as well as other related consequences and risk reduction strategies were highlighted. The future perspective will focus on functional BC for multiple heavy metal remediation and other potential applications; hence, future work should focus on designing intelligent/artificial BC for multiple purposes. |
| first_indexed | 2024-03-08T12:47:14Z |
| format | Article |
| id | doaj.art-4a130ec94b04472cb71d600bd03083cd |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-08T12:47:14Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-4a130ec94b04472cb71d600bd03083cd2024-01-21T05:05:30ZengElsevierEcotoxicology and Environmental Safety0147-65132024-01-01270115916Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive reviewMuhammad Rizwan0Ghulam Murtaza1Faisal Zulfiqar2Anam Moosa3Rashid Iqbal4Zeeshan Ahmed5Imran Khan6Kadambot H.M. Siddique7Lijian Leng8Hailong Li9School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, ChinaFaculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaDepartment of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur-63100, PakistanDepartment of Plant Pathology, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur-63100, PakistanDepartment of Agronomy, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur-63100, PakistanXinjiang Institute of Ecology & Geography, Chinese Academy of Sciences, Urumqi 830011, China; Cele National Station of Observation and Research for Desert-Grassland Ecosystems, Chinese Academy of Sciences, Urumqi 848300, ChinaSchool of Physics and Electronics, Central South University, Changsha, Hunan 410083, ChinaThe UWA Institute of Agriculture, The University of Western Australia, Perth WA 6001, Australia; Corresponding authors.School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China; Xiangjiang Laboratory, Changsha 410205, China; Corresponding author at: School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China.School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China; Corresponding authors.Mercury (Hg) contamination is acknowledged as a global issue and has generated concerns globally due to its toxicity and persistence. Tunable surface-active sites (SASs) are one of the key features of efficient BCs for Hg remediation, and detailed documentation of their interactions with metal ions in soil medium is essential to support the applications of functionalized BC for Hg remediation. Although a specific active site exhibits identical behavior during the adsorption process, a systematic documentation of their syntheses and interactions with various metal ions in soil medium is crucial to promote the applications of functionalized biochars in Hg remediation. Hence, we summarized the BC's impact on Hg mobility in soils and discussed the potential mechanisms and role of various SASs of BC for Hg remediation, including oxygen-, nitrogen-, sulfur-, and X (chlorine, bromine, iodine)- functional groups (FGs), surface area, pores and pH. The review also categorized synthesis routes to introduce oxygen, nitrogen, and sulfur to BC surfaces to enhance their Hg adsorptive properties. Last but not the least, the direct mechanisms (e.g., Hg- BC binding) and indirect mechanisms (i.e., BC has a significant impact on the cycling of sulfur and thus the Hg-soil binding) that can be used to explain the adverse effects of BC on plants and microorganisms, as well as other related consequences and risk reduction strategies were highlighted. The future perspective will focus on functional BC for multiple heavy metal remediation and other potential applications; hence, future work should focus on designing intelligent/artificial BC for multiple purposes.http://www.sciencedirect.com/science/article/pii/S0147651323014203Mercury (Hg)Functional biocharActive sitesFunctional groupsSoil and sedimentImpact of biochar |
| spellingShingle | Muhammad Rizwan Ghulam Murtaza Faisal Zulfiqar Anam Moosa Rashid Iqbal Zeeshan Ahmed Imran Khan Kadambot H.M. Siddique Lijian Leng Hailong Li Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review Ecotoxicology and Environmental Safety Mercury (Hg) Functional biochar Active sites Functional groups Soil and sediment Impact of biochar |
| title | Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review |
| title_full | Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review |
| title_fullStr | Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review |
| title_full_unstemmed | Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review |
| title_short | Tuning active sites on biochars for remediation of mercury-contaminated soil: A comprehensive review |
| title_sort | tuning active sites on biochars for remediation of mercury contaminated soil a comprehensive review |
| topic | Mercury (Hg) Functional biochar Active sites Functional groups Soil and sediment Impact of biochar |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323014203 |
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