Biochar potential to relegate metal toxicity effects is more soil driven than plant system: A global meta-analysis

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dc.contributor.authorRehman, Abdul
dc.contributor.authorArif, Muhammad Saleem
dc.contributor.authorTufail, Muhammad Aammar
dc.contributor.authorShahzad, Sher Muhammad
dc.contributor.authorTFarooq, Taimoor Hassan
dc.contributor.authorWaqas, Ahmed
dc.contributor.authorMehmood, Tariq
dc.contributor.authorFarooq, Muhammad Raza
dc.contributor.authorJaved, Zeeshan
dc.contributor.authorShakoor, Awais
dc.date.accessioned2022-03-08T07:44:32Z
dc.date.embargoEndDate2023-09-20
dc.date.issued2021-09-20
dc.date.updated2022-03-08T07:44:32Z
dc.description.abstractPollution from potentially toxic metals (PTMs) is one of the most pressing global environmental challenge with soaring human health concerns. It is now critical to seek out effective remediation technologies to control PTMs in the terrestrial environment. Biochar has piqued the interest of researchers due to its ability to immobilize PTMs, particularly in soil, with the assumption that biochar having unique physico-chemical properties may influence PTM mobility. A meta-analysis was performed using 1503 observations extracted from 80 peer-reviewed articles to determine: (a) the effects of various physico-chemical properties of biochar on the bioavailability of PTMs (As, Cd, Cu, Ni, Pb, Zn) in soil and plants, and (b) the best specification of physico-chemical properties of biochar for effective remediation of these PTMs. The findings revealed that the reduction rate of PTM bioavailability is heavily influenced by the physico-chemical properties of both biochar and soil. The physico-chemical parameters of biochar that have effective response to PTMs immobilization were as; 101-500 m2 g−1 surface area, neutral to alkaline pH, pyrolysis temperature > 500 °C, with best application rate of 1.1-3%. However, overall results indicate that the biochar, with given specification of physico-chemical attributes, can decrease the bioavailability of PTMs by 40% in soil and 22% in plants. Moreover, edaphic factors such as soil pH, texture, and crop type can also influence the biochar mediated PTMs adsorption and transformation under field or pot conditions. Furthermore, research gaps remain to be filled in order to investigate the efficiency, high specificity, and secondary pollution aspects of biochar, particularly on large-scale applications as an amendment for PTM remediation.
dc.description.sponsorshipAwais Shakoor would like to express his gratitude for the grant provided by the University of Lleida, Spain. The part of work contributed by Muhammad Aammar Tufail, has received funding from the European Union’s Horizon 2020 Research and Innovation program under the Maria Skłodowska-Curie grant agreement no. 722642 (project INTERFUTURE). The authors would like to appreciate the valuable comments from the editors and anonymous reviewers to improve the quality of this study.
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.jclepro.2021.128276
dc.identifier.idgrec032088
dc.identifier.issn0959-6526
dc.identifier.urihttp://hdl.handle.net/10459.1/73212
dc.language.isoeng
dc.publisherElsevier
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.jclepro.2021.128276
dc.relation.ispartofJournal Of Cleaner Production, 2021, vol. 316, 128276
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/722642
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/722642/EU/INTERFUTURE
dc.rightscc-by-nc-nd (c) Elsevier, 2021
dc.rights.accessRightsinfo:eu-repo/semantics/embargoedAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectPotentially toxic metals
dc.subjectSoil remediation
dc.subjectPhysico-chemical parameters
dc.subjectMetals immobilization
dc.titleBiochar potential to relegate metal toxicity effects is more soil driven than plant system: A global meta-analysis
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
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