Effective removal of zinc ions from aqueous solutions using crab carapace biosorbent

Shuguang Lu, Emma Cochrane, Stuart l Gibb

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The carapace of the crab (Cancer pagurus), a waste material disposed of by the seafood industry, has recently been shown to have potential as a biosorbent for the removal of metals from aqueous media. Crab carapace in the particle size ranges 0.25-0.8mm and 0.8-1.5mm were used to investigate the effects of agitation speed, contact time, metal concentration and initial pH on the removal of Zn(2+). In sequential-batch process Zn(2+) uptakes of 105.6 and 67.6 mg/g were recorded for 0.25-0.8 mm and 0.8-1.5 mm particles, respectively, while values of 141.3 and 76.9 mg/g were recorded in fixed-bed column studies. Binary-metal studies showed that the presence of Cu(2+) or Pb(2+) significantly suppressed Zn(2+) uptake. This study confirms that crab carapace may be considered a viable and cost-effective alternative to commercial activated carbon or ion-exchange resins for the removal of metals from aqueous media.
Original languageEnglish
Pages (from-to)208-217
Number of pages10
JournalJournal of Hazardous Materials
Volume149
Issue number1
DOIs
Publication statusPublished - 2007

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Animal Shells
Zinc
crab
aqueous solution
Metals
zinc
Ions
ion
metal
Anomura
Ion Exchange Resins
Seafood
Ion exchange resins
seafood
Particle Size
Activated carbon
activated carbon
cancer
resin
ion exchange

Cite this

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abstract = "The carapace of the crab (Cancer pagurus), a waste material disposed of by the seafood industry, has recently been shown to have potential as a biosorbent for the removal of metals from aqueous media. Crab carapace in the particle size ranges 0.25-0.8mm and 0.8-1.5mm were used to investigate the effects of agitation speed, contact time, metal concentration and initial pH on the removal of Zn(2+). In sequential-batch process Zn(2+) uptakes of 105.6 and 67.6 mg/g were recorded for 0.25-0.8 mm and 0.8-1.5 mm particles, respectively, while values of 141.3 and 76.9 mg/g were recorded in fixed-bed column studies. Binary-metal studies showed that the presence of Cu(2+) or Pb(2+) significantly suppressed Zn(2+) uptake. This study confirms that crab carapace may be considered a viable and cost-effective alternative to commercial activated carbon or ion-exchange resins for the removal of metals from aqueous media.",
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Effective removal of zinc ions from aqueous solutions using crab carapace biosorbent. / Lu, Shuguang; Cochrane, Emma; Gibb, Stuart l.

In: Journal of Hazardous Materials, Vol. 149, No. 1, 2007, p. 208-217.

Research output: Contribution to journalArticle

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AU - Cochrane, Emma

AU - Gibb, Stuart l

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