Selective adsorption and recovery of precious metal ions using protein-rich biomass as efficient adsorbents

Tatsuo Maruyama, Yasuki Terashima, Shinano Takeda, Fumiyoshi Okazaki, Masahiro Goto

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Various types of protein-rich biomass were examined as selective and environment-friendly adsorbents for precious metal ions. In the presence of base metal ions, Au3+, Pd2+ and Pt4+ ions were selectively adsorbed to samples of protein-rich biomass. Among the biomass samples tested, egg-shell membrane exhibited the highest adsorption ability and had high selectivity for Au, Pd and Pt ions. The maximum adsorption amount of Au, Pd and Pt ions to egg-shell membrane was approximately 250, 110 and 50 mg/g, respectively, in the presence of 0.1 M HCl. Microscopic observations and metal-ion desorption studies suggested that the precious metal ions were adsorbed and a portion of them was reduced to form metal nanoparticles on the egg-shell membrane, leading to high adsorption ratios. Investigations using glycoproteins indicated the importance of sugar chains in the adsorption of Au ions to the egg-shell membrane. Successful recovery of Au, Pd and Pt ions from industrial waste solutions was also demonstrated using egg-shell membrane. Biomass sheets (1 mm thick) made from egg-shell membrane also exhibited adsorption abilities for precious metal ions.

Original languageEnglish
Pages (from-to)850-857
Number of pages8
JournalProcess Biochemistry
Volume49
Issue number5
DOIs
Publication statusPublished - Jan 1 2014

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Precious metals
Biomass
Adsorbents
Adsorption
Metal ions
Egg Shell
Metals
Ions
Proteins
Membranes
Recovery
Industrial Waste
Glycoproteins
Metal nanoparticles
Industrial wastes
Sugars
Metal Nanoparticles
Desorption

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology

Cite this

Selective adsorption and recovery of precious metal ions using protein-rich biomass as efficient adsorbents. / Maruyama, Tatsuo; Terashima, Yasuki; Takeda, Shinano; Okazaki, Fumiyoshi; Goto, Masahiro.

In: Process Biochemistry, Vol. 49, No. 5, 01.01.2014, p. 850-857.

Research output: Contribution to journalArticle

Maruyama, Tatsuo ; Terashima, Yasuki ; Takeda, Shinano ; Okazaki, Fumiyoshi ; Goto, Masahiro. / Selective adsorption and recovery of precious metal ions using protein-rich biomass as efficient adsorbents. In: Process Biochemistry. 2014 ; Vol. 49, No. 5. pp. 850-857.
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