Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars

Abstract Antimony (Sb) is increasingly being recognized as an important contaminant due to its various industrial applications and mining operations. Environmental remediation approaches for Sb are still lacking, as is the understanding of Sb environmental chemistry. In this study, biosolid biochar...

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Autores principales:	Md. Aminur Rahman, Mohammad Mahmudur Rahman, Md. Mezbaul Bahar, Peter Sanderson, Dane Lamb
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/17084df788bb4e30ad869546a31374b8
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spelling	oai:doaj.org-article:17084df788bb4e30ad869546a31374b82021-12-02T15:51:12ZAntimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars10.1038/s41598-021-86978-62045-2322https://doaj.org/article/17084df788bb4e30ad869546a31374b82021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86978-6https://doaj.org/toc/2045-2322Abstract Antimony (Sb) is increasingly being recognized as an important contaminant due to its various industrial applications and mining operations. Environmental remediation approaches for Sb are still lacking, as is the understanding of Sb environmental chemistry. In this study, biosolid biochar (BSBC) was produced and utilized to remove antimonate (Sb(V)) from aqueous solution. Zirconium (Zr), Zirconium-iron (Zr–Fe) and Fe–O coated BSBC were synthesized for enhancing Sb(V) sorption capacities of BSBC. The combined results of specific surface area, FTIR, SEM–EDS, TEM–EDS, and XPS confirmed that Zr and/or Zr–Fe were successfully coated onto BSBC. The effects of reaction time, pH, initial Sb(V) concentration, adsorbate doses, ionic strength, temperature, and the influence of major competitive co-existing anions and cations on the adsorption of Sb(V) were investigated. The maximum sorption capacity of Zr–O, Zr–Fe, Zr–FeCl3, Fe–O, and FeCl3 coated BSBC were 66.67, 98.04, 85.47, 39.68, and 31.54 mg/g respectively under acidic conditions. The XPS results revealed redox transformation of Sb(V) species to Sb(III) occurred under oxic conditions, demonstrating the biochar’s ability to behave as an electron shuttle during sorption. The sorption study suggests that Zr–O and Zr–O–Fe coated BSBC could perform as favourable adsorbents for mitigating Sb(V) contaminated waters.Md. Aminur RahmanMohammad Mahmudur RahmanMd. Mezbaul BaharPeter SandersonDane LambNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Md. Aminur Rahman Mohammad Mahmudur Rahman Md. Mezbaul Bahar Peter Sanderson Dane Lamb Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
description	Abstract Antimony (Sb) is increasingly being recognized as an important contaminant due to its various industrial applications and mining operations. Environmental remediation approaches for Sb are still lacking, as is the understanding of Sb environmental chemistry. In this study, biosolid biochar (BSBC) was produced and utilized to remove antimonate (Sb(V)) from aqueous solution. Zirconium (Zr), Zirconium-iron (Zr–Fe) and Fe–O coated BSBC were synthesized for enhancing Sb(V) sorption capacities of BSBC. The combined results of specific surface area, FTIR, SEM–EDS, TEM–EDS, and XPS confirmed that Zr and/or Zr–Fe were successfully coated onto BSBC. The effects of reaction time, pH, initial Sb(V) concentration, adsorbate doses, ionic strength, temperature, and the influence of major competitive co-existing anions and cations on the adsorption of Sb(V) were investigated. The maximum sorption capacity of Zr–O, Zr–Fe, Zr–FeCl3, Fe–O, and FeCl3 coated BSBC were 66.67, 98.04, 85.47, 39.68, and 31.54 mg/g respectively under acidic conditions. The XPS results revealed redox transformation of Sb(V) species to Sb(III) occurred under oxic conditions, demonstrating the biochar’s ability to behave as an electron shuttle during sorption. The sorption study suggests that Zr–O and Zr–O–Fe coated BSBC could perform as favourable adsorbents for mitigating Sb(V) contaminated waters.
format	article
author	Md. Aminur Rahman Mohammad Mahmudur Rahman Md. Mezbaul Bahar Peter Sanderson Dane Lamb
author_facet	Md. Aminur Rahman Mohammad Mahmudur Rahman Md. Mezbaul Bahar Peter Sanderson Dane Lamb
author_sort	Md. Aminur Rahman
title	Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
title_short	Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
title_full	Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
title_fullStr	Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
title_full_unstemmed	Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
title_sort	antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/17084df788bb4e30ad869546a31374b8
work_keys_str_mv	AT mdaminurrahman antimonatesequestrationfromaqueoussolutionusingzirconiumironandzirconiumironmodifiedbiochars AT mohammadmahmudurrahman antimonatesequestrationfromaqueoussolutionusingzirconiumironandzirconiumironmodifiedbiochars AT mdmezbaulbahar antimonatesequestrationfromaqueoussolutionusingzirconiumironandzirconiumironmodifiedbiochars AT petersanderson antimonatesequestrationfromaqueoussolutionusingzirconiumironandzirconiumironmodifiedbiochars AT danelamb antimonatesequestrationfromaqueoussolutionusingzirconiumironandzirconiumironmodifiedbiochars
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Antimonate sequestration from aqueous solution using zirconium, iron and zirconium-iron modified biochars

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