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Reference type: Journal
Authors: Jiang W, Su HJ, Huo HY, Tan TW
Article Title: Synthesis and Properties of Surface Molecular Imprinting Adsorbent for Removal of Pb2+.
Publication date: 2010
Journal: Applied Biochemistry and Biotechnology
Volume: 160
Issue: (2)
Page numbers: 467-476.
DOI: 10.1007/s12010-008-8366-1

Abstract: Abstract: A new chitosan imprinting adsorbent using diatomite as core material was prepared by using the surface molecular imprinting technology with the Pb2+ as imprinted ion. The preparation process conditions of the surface molecular imprinting adsorbent were studied. The adsorbent was characterized by using Fourier transform infrared (FTIR) spectrum. FTIR spectrum indicated that it was cross-linked by epichlorohydrin. The new imprinting adsorbent could provide a higher adsorption capacity for Pb2+, which reached 139.6 mg/g increasing 32.3% compared with cross-linking chitosan adsorbent (the initial Pb2+ concentration of 600 mg/L). The adsorption velocity was quick and the equilibration time of the imprinting adsorbent for Pb2+ was 3h that shortened about 40% compared with cross-linking chitosan adsorbent. It had a more wide pH range of 57 than that of cross-linking chitosan adsorbent. The new imprinting adsorbent can be reused for up to ten cycles without loss of adsorption capacity. In the kinetics and isotherm study, the pseudosecond order model and Langmuir model could represent the adsorption process
Template and target information: Pb(II), lead ion
Author keywords: surface molecular imprinting, chitosan, Diatomite, adsorption, Lead ion

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