Electrochemical Copper Removal from Dilute Solutions by Packed Bed Electrodes

Sarfarazi, Fereshteh; Ghoroghchian, Jamal

doi:10.1006/mchj.1994.1055

Cited by 11 publications

(2 citation statements)

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“…Various removal methods of heavy metals from wastewater have been developed, such as chemical precipitation, membrane filtration, ion exchange, liquid extraction, or electrodialysis. [5][6][7][8] However, these methods are not widely used because of their high cost and low feasibility for small-scale industries. In contrast, the adsorption technique is one of the preferred methods for removal of heavy metals because of its efficiency and low cost.…”

Section: Introductionmentioning

confidence: 99%

Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Coşkun

Soykan

2009

J of Applied Polymer Sci

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In this study, a fibrous adsorbent containing amidoxime groups was prepared by graft copolymerization of acrylonitrile (AN) onto poly(ethylene terephthalate) (PET) fibers using benzoyl peroxide (Bz 2 O 2 ) as initiator in aqueous solution, and subsequent chemical modification of cyano groups by reaction with hydroxylamine hydrochloride in methanol. The grafted and modified fibers were characterized by FTIR, TGA, SEM, and XRD analysis. The crystallinity increased, but thermal stability decreased with grafting and amidoximation. The removal of Cu(II), Ni(II), Co(II), Pb(II), and Cd(II) ions from aqueous solution onto chelating fibers were studied using batch adsorption method. These properties were investigated under competitive conditions. The effects of the pH, contact time, and initial ion concentration on the removal percentage of ions were studied. The results show that the adsorption rate of metal ions followed the given order Co(II) > Pb(II) > Cd(II) > Ni(II) > Cu(II). The percentage removal of ions increased with initial ion concentration, shaking time, and pH of the medium. Total metal ion removal capacity was 49.75 mg/g fiber on amidoximated fiber. It was observed that amidoximated fibers can be regenerated by acid without losing their activity, and it is more selective for Pb(II) ions in the mixed solution of Pb-Cu-Ni-Co-Cd at pH 4.

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Section: Introductionmentioning

confidence: 99%

Preparation of amidoximated polyester fiber and competitive adsorption of some heavy metal ions from aqueous solution onto this fiber

Coşkun

Soykan

2009

J of Applied Polymer Sci

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“…The primary sources of copper discharge from industries include printed circuit boards, metal finishing industries, tannery operations, chemical manufacturing and mining drainage. As cop-per is a highly toxic element, the removal of Cu 2+ from wastewater has been the subject of many studies (Sarfarazi and Ghoroghchian, 1994;Keane, 1998;Ho, 2003;Lai and Lin, 2004).…”

Section: Introductionmentioning

confidence: 99%