Activated Plantain Peel Biochar As Adsorbent For Removal of Zinc(II) Ions From Aqueous Solution: Equilibrium and Kinetics Studies.

Year 2018, Volume: 5 Issue: 3, 1257 - 1270, 01.09.2018

Nworie Felıx , Nwabue Ienna İkelle Ikelle Ogah Anselm Elom Nwabueze İtumoh Emeka Oroke Clinton

https://doi.org/10.18596/jotcsa.438332

Cited By: 12

Abstract

 Plantain peel biomass was carbonized, activated, and characterized using BET surface area and XRD. The XRD diffraction indicated crystalline structure with crystallite size of 14.56 nm evaluated through Debye-Scherrer equation. The pore size (cc/g) and pore surface area (m2/g) of the biochar was 8.79 and 16.69 respectively from BET surface area. Various parametric properties such as effect of initial metal ion concentration, pH, and contact time were studied in a batch reaction process. Adsorption of zinc from aqueous solution decreased with an increase of pH and initial concentration. Equilibrium modeling studies suggested that the data fitted mainly to the Langmuir isotherm. Adsorption kinetic data tested using various kinetic models fitted the Bangham’s pore diffusion model implicating pore diffusion as the main rate limiting step. The sorption studies indicated the potential of plantain peel biochar as an effective, efficient and low cost adsorbent for remediating zinc (II) ions contaminated environment.

Keywords

biochar, zinc (II) ions, adsorption and kinetic models, plantain peel

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