CIESC Journal ›› 2012, Vol. 20 ›› Issue (3): 426-432.

• 香港科技大学化学与生物分子工程系戈登?麦凯教授退休纪念专刊 • 上一篇    下一篇

丝胶生物吸附剂选择性去除废水中染料的评估

CHEN Xinqing1, LAM Koon Fung1, MAK Shuk Fong1, CHING Wai Kwong1, NG Tsz Nok1, YEUNG King Lun1,2   

  1. 1 Department of Chemical and Biomolecular Engineering, 2 Division of Environment, the Hong Kong University of Science and Technology, Hong Kong, China
  • 收稿日期:2012-03-15 修回日期:2012-04-04 出版日期:2012-06-28 发布日期:2012-04-04

Assessment of sericin biosorbent for selective dye removal

CHEN Xinqing1, LAM Koon Fung1, MAK Shuk Fong1, CHING Wai Kwong1, NG Tsz Nok1, YEUNG King Lun1,2   

  1. 1 Department of Chemical and Biomolecular Engineering, 2 Division of Environment, the Hong Kong University of Science and Technology, Hong Kong, China
  • Received:2012-03-15 Revised:2012-04-04 Online:2012-06-28 Published:2012-04-04

摘要： The silk sericin is the main residue in silk production and it is found to be a low cost and efficient biosorbent. In this study, sericin was characterized with various techniques including SEM (scanning electron microscope), XRD, N2 physisorption, FTIR (Fourier transformed infrared spectroscopy) and XPS (X-ray photoelectron spectroscopy). The nitrogen content of sericin was ca. 8.5 mmol•g?1 according to elemental analysis. Dye adsorption by sericin biosorbent was investigated with the acid yellow (AY), methylene blue (MB) and copper (II) phthalocyanine-3,4′4″4′″-tetrasulfonic acid (CuPc) dyes from water. Sericin displayed large capacity for AY and CuPc adsorption with adsorption capacities of respectively 3.1 and 0.35 mmol•g?1, but it did not adsorbed methyl-ene blue dye. This selectivity is due to the basicity of amide groups in sericin biosorbents.

关键词: dye adsorption, silk protein, biosorbent

Abstract: The silk sericin is the main residue in silk production and it is found to be a low cost and efficient biosorbent. In this study, sericin was characterized with various techniques including SEM (scanning electron microscope), XRD, N2 physisorption, FTIR (Fourier transformed infrared spectroscopy) and XPS (X-ray photoelectron spectroscopy). The nitrogen content of sericin was ca. 8.5 mmol•g?1 according to elemental analysis. Dye adsorption by sericin biosorbent was investigated with the acid yellow (AY), methylene blue (MB) and copper (II) phthalocyanine-3,4′4″4′″-tetrasulfonic acid (CuPc) dyes from water. Sericin displayed large capacity for AY and CuPc adsorption with adsorption capacities of respectively 3.1 and 0.35 mmol•g?1, but it did not adsorbed methyl-ene blue dye. This selectivity is due to the basicity of amide groups in sericin biosorbents.

Key words: dye adsorption, silk protein, biosorbent

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