Arsenic removal by pomelo peel biochar coated with iron

Nguyen, TH; Loganathan, P; Nguyen, TV; Vigneswaran, S; Ha Nguyen, TH; Tran, HN; Nguyen, QB

Arsenic removal by pomelo peel biochar coated with iron

Nguyen, TH Loganathan, P Nguyen, TV Vigneswaran, S

Ha Nguyen, TH Tran, HN Nguyen, QB

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Chemical Engineering Research and Design, 2022, 186, pp. 252-265
Issue Date:: 2022-10-01

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Field	Value	Language
dc.contributor.author	Nguyen, TH
dc.contributor.author	Loganathan, P
dc.contributor.author	Nguyen, TV
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322
dc.contributor.author	Ha Nguyen, TH
dc.contributor.author	Tran, HN
dc.contributor.author	Nguyen, QB
dc.date.accessioned	2022-11-06T07:11:01Z
dc.date.available	2022-11-06T07:11:01Z
dc.date.issued	2022-10-01
dc.identifier.citation	Chemical Engineering Research and Design, 2022, 186, pp. 252-265
dc.identifier.issn	0263-8762
dc.identifier.issn	1744-3563
dc.identifier.uri	http://hdl.handle.net/10453/163242
dc.description.abstract	Arsenic present in drinking water is a serious concern due to its high toxicity. In this study, pomelo peel biochar coated with iron (PPCI) through slow pyrolysis carbonization and iron-coating processes was investigated for its ability to remove arsenite As(III) and arsenate As(V). The maximum adsorption capacity of As(III) and As(V) on PPCI at pH = 7 determined by the Langmuir model was11.77 mg/g and 15.28 mg/g, respectively. The PPCI's adsorption capacity was much higher than that of raw pomelo peel (PP) (0.033 mg/g and 0.034 mg/g for As(III) and As(V), respectively) and many other biomass-derived adsorbents reported in the literature. The change of solution pH (2.0–10 range) did not significantly affect the PPCI's adsorption capacity to As(III) or As(V) ions. In contrast, the presence of co-existing anions caused differential reductions in As removal efficiency (the effecting order: Cl–<SO42–<CO32–<SiO32–<HPO42–). The characterization of PPCI (morphological, textural, surface functionality, and surface charge properties) before and after adsorption was conducted. Results showed that adsorption mechanisms were reaction between Fe and As in the PPCI's surface, inner-sphere complexation for As(V) and As(III) ), and electrostatic attraction for As(V). PPCI is simply synthesized from abundant pomelo waste products and can be used for efficiently removing the two forms of toxic As ions from water.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Chemical Engineering Research and Design
dc.relation.isbasedon	10.1016/j.cherd.2022.07.022
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0102 Applied Mathematics, 0904 Chemical Engineering, 0911 Maritime Engineering, 0914 Resources Engineering and Extractive Metallurgy
dc.subject.classification	Chemical Engineering
dc.subject.classification	Strategic, Defence & Security Studies
dc.title	Arsenic removal by pomelo peel biochar coated with iron
dc.type	Journal Article
utslib.citation.volume	186
utslib.for	0102 Applied Mathematics
utslib.for	0904 Chemical Engineering
utslib.for	0911 Maritime Engineering
utslib.for	0914 Resources Engineering and Extractive Metallurgy
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2024-10-01T00:00:00+1000Z
dc.date.updated	2022-11-06T07:10:57Z
pubs.publication-status	Published
pubs.volume	186

Abstract:

Arsenic present in drinking water is a serious concern due to its high toxicity. In this study, pomelo peel biochar coated with iron (PPCI) through slow pyrolysis carbonization and iron-coating processes was investigated for its ability to remove arsenite As(III) and arsenate As(V). The maximum adsorption capacity of As(III) and As(V) on PPCI at pH = 7 determined by the Langmuir model was11.77 mg/g and 15.28 mg/g, respectively. The PPCI's adsorption capacity was much higher than that of raw pomelo peel (PP) (0.033 mg/g and 0.034 mg/g for As(III) and As(V), respectively) and many other biomass-derived adsorbents reported in the literature. The change of solution pH (2.0–10 range) did not significantly affect the PPCI's adsorption capacity to As(III) or As(V) ions. In contrast, the presence of co-existing anions caused differential reductions in As removal efficiency (the effecting order: Cl–

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http://hdl.handle.net/10453/163242