Removing ammonium from water using modified corncob-biochar

Vu, TM; Trinh, VT; Doan, DP; Van, HT; Nguyen, TV; Vigneswaran, S; Ngo, HH

Removing ammonium from water using modified corncob-biochar

Vu, TM Trinh, VT Doan, DP Van, HT Nguyen, TV Vigneswaran, S

Ngo, HH

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Publication Type:: Journal Article
Citation:: Science of the Total Environment, 2017, 579 pp. 612 - 619
Issue Date:: 2017-02-01

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Field	Value	Language
dc.contributor.author	Vu, TM	en_US
dc.contributor.author	Trinh, VT	en_US
dc.contributor.author	Doan, DP	en_US
dc.contributor.author	Van, HT	en_US
dc.contributor.author	Nguyen, TV	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.date.available	2020-05-25T19:16:59Z
dc.date.issued	2017-02-01	en_US
dc.identifier.citation	Science of the Total Environment, 2017, 579 pp. 612 - 619	en_US
dc.identifier.issn	0048-9697	en_US
dc.identifier.uri	http://hdl.handle.net/10453/64569
dc.description.abstract	© 2016 Elsevier B.V. Ammonium pollution in groundwater and surface water is of major concern in many parts of the world due to the danger it poses to the environment and people's health. This study focuses on the development of a low cost adsorbent, specifically a modified biochar prepared from corncob. Evaluated here is the efficiency of this new material for removing ammonium from synthetic water (ammonium concentration from 10 to 100 mg/L). The characteristics of the modified biochar were determined by Brunauer-Emmett-Teller (BET) test, Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM). It was found that ammonium adsorption on modified biochar strongly depended on pH. Adsorption kinetics of NH4+-N using modified biochar followed the pseudo-second order kinetic model. Both Langmuir and Sips adsorption isotherm models could simulate well the adsorption behavior of ammonium on modificated biochar. The highest adsorption capacity of 22.6 mg NH4+-N/g modified biochar was obtained when the biochar was modified by soaking it in HNO3 6 M and NaOH 0.3 M for 8 h and 24 h, respectively. The high adsorption capacity of the modified biochar suggested that it is a promising adsorbent for NH4+-N remediation from water.	en_US
dc.relation.ispartof	Science of the Total Environment	en_US
dc.relation.isbasedon	10.1016/j.scitotenv.2016.11.050	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.title	Removing ammonium from water using modified corncob-biochar	en_US
dc.type	Journal Article
utslib.citation.volume	579	en_US
utslib.for	0904 Chemical Engineering	en_US
utslib.for	0907 Environmental Engineering	en_US
pubs.embargo.period	Not known	en_US
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	open_access
pubs.publication-status	Published	en_US
pubs.volume	579	en_US

Abstract:

© 2016 Elsevier B.V. Ammonium pollution in groundwater and surface water is of major concern in many parts of the world due to the danger it poses to the environment and people's health. This study focuses on the development of a low cost adsorbent, specifically a modified biochar prepared from corncob. Evaluated here is the efficiency of this new material for removing ammonium from synthetic water (ammonium concentration from 10 to 100 mg/L). The characteristics of the modified biochar were determined by Brunauer-Emmett-Teller (BET) test, Fourier transform infrared spectroscopy (FTIR) and Scanning electron microscopy (SEM). It was found that ammonium adsorption on modified biochar strongly depended on pH. Adsorption kinetics of NH4+-N using modified biochar followed the pseudo-second order kinetic model. Both Langmuir and Sips adsorption isotherm models could simulate well the adsorption behavior of ammonium on modificated biochar. The highest adsorption capacity of 22.6 mg NH4+-N/g modified biochar was obtained when the biochar was modified by soaking it in HNO3 6 M and NaOH 0.3 M for 8 h and 24 h, respectively. The high adsorption capacity of the modified biochar suggested that it is a promising adsorbent for NH4+-N remediation from water.

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http://hdl.handle.net/10453/64569