Adsorption and desorption of copper(II) ions onto garden grass

Hossain, MA; Ngo, HH; Guo, WS; Setiadi, T

Adsorption and desorption of copper(II) ions onto garden grass

Hossain, MA Ngo, HH

Guo, WS

Setiadi, T

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2012, 121 pp. 386 - 395
Issue Date:: 2012-10-01

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Field	Value	Language
dc.contributor.author	Hossain, MA	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, WS https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Setiadi, T	en_US
dc.date.available	2012-06-20	en_US
dc.date.issued	2012-10-01	en_US
dc.identifier.citation	Bioresource Technology, 2012, 121 pp. 386 - 395	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/23091
dc.description.abstract	The garden grass (GG) was firstly used to remove copper(II) from water as bioadsorbent. From the results of characterisation, the GG had the merits of high specific surface area, significant adsorption sites and functional groups. Copper-adsorption significantly depends on the initial copper concentrations, contact time, pH, adsorbent doses, particle sizes and temperature. The positive values of ΔG° indicates that the adsorption of copper onto garden grass is non-spontaneous and values lies within the ranges of 4.452-13.660kJ/mol for supporting physical adsorption. 0.1N H2SO4 was found as suitable eluent, which could be used 5 cycles of adsorption-desorption. The data from adsorption and desorption equilibrium were well fitted by the Langmuir, SIPS and Redlich-Peterson isotherm models. The maximum adsorption and desorption capacities were 58.34 and 319.03mg/g, respectively, for 1g dose. Adsorption and desorption kinetics could be described by the Pseudo-first-order model. © 2012 Elsevier Ltd.	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2012.06.119	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Poaceae	en_US
dc.subject.mesh	Sulfuric Acids	en_US
dc.subject.mesh	Copper	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Temperature	en_US
dc.subject.mesh	Water Purification	en_US
dc.subject.mesh	Kinetics	en_US
dc.subject.mesh	Adsorption	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Particle Size	en_US
dc.subject.mesh	Models, Biological	en_US
dc.subject.mesh	Time Factors	en_US
dc.subject.mesh	New South Wales	en_US
dc.title	Adsorption and desorption of copper(II) ions onto garden grass	en_US
dc.type	Journal Article
utslib.citation.volume	121	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	closed_access
pubs.publication-status	Published	en_US
pubs.volume	121	en_US

Abstract:

The garden grass (GG) was firstly used to remove copper(II) from water as bioadsorbent. From the results of characterisation, the GG had the merits of high specific surface area, significant adsorption sites and functional groups. Copper-adsorption significantly depends on the initial copper concentrations, contact time, pH, adsorbent doses, particle sizes and temperature. The positive values of ΔG° indicates that the adsorption of copper onto garden grass is non-spontaneous and values lies within the ranges of 4.452-13.660kJ/mol for supporting physical adsorption. 0.1N H2SO4 was found as suitable eluent, which could be used 5 cycles of adsorption-desorption. The data from adsorption and desorption equilibrium were well fitted by the Langmuir, SIPS and Redlich-Peterson isotherm models. The maximum adsorption and desorption capacities were 58.34 and 319.03mg/g, respectively, for 1g dose. Adsorption and desorption kinetics could be described by the Pseudo-first-order model. © 2012 Elsevier Ltd.

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http://hdl.handle.net/10453/23091