Adsorptive removal of heavy metals from water using sodium titanate nanofibres loaded onto GAC in fixed-bed columns

Sounthararajah, DP; Loganathan, P; Kandasamy, J; Vigneswaran, S

Adsorptive removal of heavy metals from water using sodium titanate nanofibres loaded onto GAC in fixed-bed columns

Sounthararajah, DP Loganathan, P Kandasamy, J Vigneswaran, S

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Publication Type:: Journal Article
Citation:: Journal of Hazardous Materials, 2015, 287 pp. 306 - 316
Issue Date:: 2015-04-08

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Field	Value	Language
dc.contributor.author	Sounthararajah, DP	en_US
dc.contributor.author	Loganathan, P	en_US
dc.contributor.author	Kandasamy, J	en_US
dc.contributor.author	Vigneswaran, S https://orcid.org/0000-0002-8117-4322	en_US
dc.date.available	2020-05-25T19:23:16Z
dc.date.issued	2015-04-08	en_US
dc.identifier.citation	Journal of Hazardous Materials, 2015, 287 pp. 306 - 316	en_US
dc.identifier.issn	0304-3894	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33393
dc.description.abstract	© 2015 Elsevier B.V. Heavy metals are serious pollutants in aquatic environments. A study was undertaken to remove Cu, Cd, Ni, Pb and Zn individually (single metal system) and together (mixed metals system) from water by adsorption onto a sodium titanate nanofibrous material. Langmuir adsorption capacities (mg/g) at 10-3M NaNO3 ionic strength in the single metal system were 60, 83, 115 and 149 for Ni, Zn, Cu, and Cd, respectively, at pH 6.5 and 250 for Pb at pH 4.0. In the mixed metals system they decreased at high metals concentrations. In column experiments with 4% titanate material and 96% granular activated carbon (w/w) mixture at pH 5.0, the metals breakthrough times and adsorption capacities (for both single and mixed metals systems) decreased in the order Pb>Cd, Cu>Zn>Ni within 266 bed volumes. The amounts adsorbed were up to 82 times higher depending on the metal in the granular activated carbon+titanate column than in the granular activated carbon column. The study showed that the titanate material has high potential for removing heavy metals from polluted water when used with granular activated carbon at a very low proportion in fixed-bed columns.	en_US
dc.relation.ispartof	Journal of Hazardous Materials	en_US
dc.relation.isbasedon	10.1016/j.jhazmat.2015.01.067	en_US
dc.subject.classification	Strategic, Defence & Security Studies	en_US
dc.subject.mesh	Oxides	en_US
dc.subject.mesh	Carbon	en_US
dc.subject.mesh	Metals, Heavy	en_US
dc.subject.mesh	Titanium	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Adsorption	en_US
dc.subject.mesh	Wood	en_US
dc.subject.mesh	Nanofibers	en_US
dc.title	Adsorptive removal of heavy metals from water using sodium titanate nanofibres loaded onto GAC in fixed-bed columns	en_US
dc.type	Journal Article
utslib.citation.volume	287	en_US
utslib.for	090404 Membrane and Separation Technologies	en_US
utslib.for	0907 Environmental Engineering	en_US
utslib.for	090407 Process Control and Simulation	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	09 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	287	en_US

Abstract:

© 2015 Elsevier B.V. Heavy metals are serious pollutants in aquatic environments. A study was undertaken to remove Cu, Cd, Ni, Pb and Zn individually (single metal system) and together (mixed metals system) from water by adsorption onto a sodium titanate nanofibrous material. Langmuir adsorption capacities (mg/g) at 10-3M NaNO3 ionic strength in the single metal system were 60, 83, 115 and 149 for Ni, Zn, Cu, and Cd, respectively, at pH 6.5 and 250 for Pb at pH 4.0. In the mixed metals system they decreased at high metals concentrations. In column experiments with 4% titanate material and 96% granular activated carbon (w/w) mixture at pH 5.0, the metals breakthrough times and adsorption capacities (for both single and mixed metals systems) decreased in the order Pb>Cd, Cu>Zn>Ni within 266 bed volumes. The amounts adsorbed were up to 82 times higher depending on the metal in the granular activated carbon+titanate column than in the granular activated carbon column. The study showed that the titanate material has high potential for removing heavy metals from polluted water when used with granular activated carbon at a very low proportion in fixed-bed columns.

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http://hdl.handle.net/10453/33393