Eco-friendly activated carbon developed from rice hulls for chromium and iron ion removal
- 1 June 2022
- journal article
- research article
- Published by Thomas Telford Ltd. in Journal of Environmental Engineering and Science
- Vol. 17 (2), 53-66
- https://doi.org/10.1680/jenes.21.00002
Abstract
Rice hulls (RH), a harmful biowaste, was used to produce nanosized activated carbon (RHAC) by combustion and phosphoric acid treatment. The developed RHAC was characterized using various structural and morphological techniques (SEM, XRD, FTIR, and N2 adsorption). The prepared RHAC was used to remove heavy metal ions (Fe(III) and Cr(VI)) by the adsorption mechanism. Adsorption parameters, e.g., contact time, the dose, initial concentration of the heavy metals ions, were investigated. Five adsorption models (2 & 3 parameters) were studied. Also, the adsorption kinetic through the intraparticle diffusion model was applied. RHAC shows adsorption capacities of 47.00 and 45.00 mg/g for Fe(III) and Cr(VI), respectively. The findings recommend using RHAC as low-cost and eco-friendly for metal ions removal and water treatment applications.Keywords
This publication has 64 references indexed in Scilit:
- Kinetics and equilibrium adsorption of iron (II), lead (II), and copper (II) onto activated carbon prepared from olive stone wasteDesalination and Water Treatment, 2013
- Synthesis, Growth Mechanism, and Electrochemical Properties of Hollow Mesoporous Carbon Spheres with Controlled DiameterThe Journal of Physical Chemistry C, 2011
- Modeling and evaluation of chromium remediation from water using low cost bio-char, a green adsorbentJournal of Hazardous Materials, 2011
- Supported metal nanoparticles on porous materials. Methods and applicationsChemical Society Reviews, 2008
- Synthesis of carbon nanostructures with unique morphologies via a reduction-catalysis reaction routeMaterials Research Bulletin, 2006
- Preparation of Monodisperse, Submicrometer Carbon Spheres by Pyrolysis of Melamine–Formaldehyde ResinSmall, 2006
- Adsorption of Cu(II), Cd(II), Zn(II), Mn(II) and Fe(III) ions by tannic acid immobilised activated carbonSeparation and Purification Technology, 2006
- Adsorptive removal of phenol by bagasse fly ash and activated carbon: Equilibrium, kinetics and thermodynamicsColloids and Surfaces A: Physicochemical and Engineering Aspects, 2006
- Chromium(VI) adsorption from aqueous solution by Hevea Brasilinesis sawdust activated carbonJournal of Hazardous Materials, 2005
- Kinetics and mechanism of removal of methylene blue by adsorption on various carbons—a comparative studyDyes and Pigments, 2001