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Selective adsorption of tannins onto hide collagen fibres

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Abstract

Hide collagen of animals is used to prepare adsorbent material and its adsorption properties to tannins are investigated. It is indicated that the collagen fibres has excellent adsorption selectivity and high adsorption capacity to tannins. The adsorption rate of tannins is more than 90% whilst less than 10% of functional components are retained by the adsorbent. The adsorption mechanism of tannins onto hide collagen fibres is hydrogen-bonding association. Freundlich model can be used to describe the adsorption isotherms, and the pseudo-second-order rate model can be used to describe adsorption kinetics.

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Authors and Affiliations

  1. Key Laboratory of Leather Chemistry and Engineering of Ministry of Education, Sichuan University, 610065, Chengdu, China

    Xuepin Liao, Zhongbing Lu & Bi Shi

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  1. Xuepin Liao
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  2. Zhongbing Lu
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  3. Bi Shi
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Correspondence to Bi Shi.

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Liao, X., Lu, Z. & Shi, B. Selective adsorption of tannins onto hide collagen fibres. Sc. China Ser. B-Chem. 46, 495–504 (2003). https://doi.org/10.1360/02yb0206

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  • DOI: https://doi.org/10.1360/02yb0206

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