Adsorption of Pb (II) Using Sheep  Fur: Isotherm, Kinetics and  Thermodynamic Studies

Salaudeen Abdulwasiu Olawale; Aduloju Emmanuel; Okike Okorie; Oladokun Benjamen Niran; Adedeji Sunday Asher

doi:10.9734/ajacr/2022/v12i4229

Research Article Open access CC BY 4.0

Adsorption of Pb (II) Using Sheep Fur: Isotherm, Kinetics and Thermodynamic Studies

Salaudeen Abdulwasiu Olawale, Aduloju Emmanuel, Okike Okorie, Oladokun Benjamen Niran, Adedeji Sunday Asher

Asian Journal of Applied Chemistry Research · pp. 27–33 · Published 31 Dec 2022

10.9734/ajacr/2022/v12i4229

Abstract

Sheep fur (SF), a keratinous biomaterial, was used as a low cost adsorbent for removal of Pb (II) from aqueous solution. The sorbent was characterized, where moisture content, pH, bulk density and loss on ignition were determined. The experimental data were analyzed by Langmuir, Freundlich, Temkin and Dubinin Radushkevich model with the Langmuir model showing the best fit. Maximum adsorption capacity of Pb (II) by the SF was 45.46 mg/g. Separation factor RL was 0.037 indicating a favourable adsorption process. The results also indicated that kinetic data were best described by the pseudo second-order model with a correlation coefficient (R2) of 0.997. Negative standard Gibb’s free energy (ΔG) obtained indicated that the Pb (II) adsorption process was spontaneous and thermodynamically feasible. Fourier Transform Infra-red Spectroscopy (FTIR) analysis confirmed the presence of carboxyl, hydroxyl, amino and sulphur-containing functional groups on the SF.

Sheep fur, isotherm, kinetics thermodynamic adsorption fourier transform infra-red spectroscopy

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Salaudeen Abdulwasiu Olawale, Aduloju Emmanuel, Okike Okorie, Oladokun Benjamen Niran, Adedeji Sunday Asher (2022). Adsorption of Pb (II) Using Sheep Fur: Isotherm, Kinetics and Thermodynamic Studies. Asian Journal of Applied Chemistry Research , 27–33. https://doi.org/10.9734/ajacr/2022/v12i4229

Affiliations

Salaudeen Abdulwasiu Olawale — Chemistry Unit of Applied Mathematics Programme, National Mathematical Centre, Kwali, Abuja, Nigeria.
Aduloju Emmanuel — Department of Science Technology, Federal Polytechnic Offa, Kwara State, Nigeria.
Okike Okorie — Theoritical Physics Programme, National Mathematical Centre, Kwali, Abuja, Nigeria.
Oladokun Benjamen Niran — Department of Chemistry, University of Abuja, Nigeria.
Adedeji Sunday Asher — Chemistry Unit of Applied Mathematics Programme, National Mathematical Centre, Kwali, Abuja, Nigeria.

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