Cadmium Adsorption on Chitosan/Chlorella Biomass Sorbent Prepared by Ionic-Imprinting Technique

https://doi.org/10.22146/ijc.21210

Anis Shofiyani(1*), Narsito Narsito(2), Sri Juari Santosa(3), Sri Noegrohati(4), Titin Anita Zahara(5), Endah Sayekti(6)

(1) Department of Chemistry, Tanjungpura, University, Jl. A. Yani Pontianak 78124
(2) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara PO BOX BLS 21 Yogyakarta 55281
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara PO BOX BLS 21 Yogyakarta 55281
(4) Faculty of Pharmacy, Universitas Gadjah Mada, Jl. Sekip Utara Yogyakarta 55281
(5) Department of Chemistry, Tanjungpura, University, Jl. A. Yani Pontianak 78124
(6) Department of Chemistry, Tanjungpura, University, Jl. A. Yani Pontianak 78124
(*) Corresponding Author

Abstract


Ionic-Imprinted Chitosan/Chlorella biomass sorbent (IICCb) has been synthesized for selective adsorption of Cd(II) adsorption. IICCb was prepared by coating Cd(II)-complexed-chitosan hydrogel on the biomass surface followed by cross-linking procedure. Cd(II)-imprinting ions were then eluted using Na2EDTA solution to provide a specific template for binding sites of Cd(II). Batch adsorption was carried out as function of initial pH, contact time, and initial concentration of the Cd(II) solution. Result showed that the optimum adsorption of Cd(II) was found at pH 4-6. Study of pseudo-second order kinetic showed that the adsorption of Cd(II) on IICCb went faster than that on Ionic-Imprinted Chitosan (IIC) or Non-Imprinted Ionic Chitosan/Chlorella sorbent (NIICCb). The maximum Cd(II) adsorption capacity as obtained from Langmuir adsorption isotherm was found to be 53.76 mg/g on IICCb, that was comparatively higher than that on IIC (44.44 mg/g) or on NIICCb (51.02 mg/g) adsorbent.

Keywords


Ionic-Imprinted Chitosan/Chlorella biomass sorbent; adsorption; Cd(II)

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DOI: https://doi.org/10.22146/ijc.21210

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Indonesian Journal of Chemisty (ISSN 1411-9420 / 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

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