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Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272

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Main Authors: Fazlul Bari, Noorzahan, Begum, Kamarudin, Hussin, Samsul Baharin, Jamaludin
Format: Article
Language:English
Published: Elsevier B.V. 2009
Subjects:
Adsorption isotherms
Copper
Cyanex 272
Immobilization
Nickel
Sol-gel silica
Solid phase extraction
Zinc
Silica
Metallurgy
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/6762
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spelling my.unimap-67622009-08-10T03:00:58Z Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272 Fazlul Bari Noorzahan, Begum Kamarudin, Hussin Samsul Baharin, Jamaludin Adsorption isotherms Copper Cyanex 272 Immobilization Nickel Sol-gel silica Solid phase extraction Zinc Silica Metallurgy Link to publisher's homepage at www.elsevier.com The extraction and separation of Cu(II), Ni(II) and Zn(II) from aqueous sulfate-acetate solution were carried out using solid phase sol-gel silica containing immobilized Cyanex 272 {bis(2,4,4-trimethylpentyl)phosphinic acid, HA} (SGSIC). Characterisation of SGSIC by FT-IR, EDX, SEM, TG-DTA and BET proved the presence of Cyanex 272 in the sol-gel silica. It was found that SGSIC can extract about 95% Zn(II) at equilibrium pH 3.0, 99% Cu(II) at pH 5.3 and 91% Ni(II) at pH 6.2 from synthetic solutions containing 20 mg/L of each metal ion. Various parameters such as pH of the aqueous solution, ratio of solid to liquid, Cyanex 272 to silica, initial Cu(II) concentration and temperature were studied. The adsorption data fitted the Langmuir adsorption model, but at higher Cu(II) concentrations (8.9-82 mM), it followed the Freundlich adsorption model. The maximum adsorption capacity of Cu(II) was found to be 20.9 mg/g (0.33 mmol/g). SGSIC was easily regenerated and reused in the subsequent removal of Cu(II) in five cycles. By varying the aqueous pH and solid to liquid ratio, the separation and recovery of Cu(II), Zn(II) and Ni(II) from a dilute leach solution of printed circuit board was demonstrated. 2009-08-10T02:57:14Z 2009-08-10T02:57:14Z 2009-03 Article Hydrometallurgy, vol.96 (1-2), 2009, pages 140-147. 0304-386X http://www.sciencedirect.com/science/journal/0304386X http://hdl.handle.net/123456789/6762 en Elsevier B.V.
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Adsorption isotherms
Copper
Cyanex 272
Immobilization
Nickel
Sol-gel silica
Solid phase extraction
Zinc
Silica
Metallurgy
spellingShingle Adsorption isotherms
Copper
Cyanex 272
Immobilization
Nickel
Sol-gel silica
Solid phase extraction
Zinc
Silica
Metallurgy
Fazlul Bari
Noorzahan, Begum
Kamarudin, Hussin
Samsul Baharin, Jamaludin
Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
description Link to publisher's homepage at www.elsevier.com
format Article
author Fazlul Bari
Noorzahan, Begum
Kamarudin, Hussin
Samsul Baharin, Jamaludin
author_facet Fazlul Bari
Noorzahan, Begum
Kamarudin, Hussin
Samsul Baharin, Jamaludin
author_sort Fazlul Bari
title Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
title_short Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
title_full Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
title_fullStr Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
title_full_unstemmed Extraction and separation of Cu(II), Ni(II) and Zn(II) by sol-gel silica immobilized with Cyanex 272
title_sort extraction and separation of cu(ii), ni(ii) and zn(ii) by sol-gel silica immobilized with cyanex 272
publisher Elsevier B.V.
publishDate 2009
url http://dspace.unimap.edu.my/xmlui/handle/123456789/6762
_version_ 1643788598923755520
score 13.222552

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