Effect of Metal Ion Concentration on the Biosorption of Al3+ and Cr6+ by Almond Tree (Terminalia catappa L.) Leaves
Abstract
The influence of initial metal ion concentration of the batch sorption of Al3+ and Cr6+ onto a low-cost biosorbent was investigated. The experimental results were analysed in terms of Langmuir and Freundlich isotherms. According to the evaluation using Langmuir equation, the monolayer sorption capacity obtained were 1.12mg/g and 2.67mg/g for Al3+ and Cr6+ respectively. The data further showed that sorption of the two metals onto the biomass increased with increase in initial metal ion concentration. The thermodynamic assessment of the metal ion – almond tree (Terminalia catappa L. biomass system indicates the feasibility and spontaneous nature of the process. ?Go was evaluated as ranging from -4.56 to – 6.64 KJ mol-1 and –4.03 to -6.10 KJ mol-1 for Al3+ and Cr6+ sorption respectively. The order of magnitude of the ?Go values indicates an ion exchange physiosorption process.
Keywords: Adsorption, Almond tree, Heavy metals removal, Phytoremediation, water treatment.
To list your conference here. Please contact the administrator of this platform.
Paper submission email: CMR@iiste.org
ISSN (Paper)2224-3224 ISSN (Online)2225-0956
Please add our address "contact@iiste.org" into your email contact list.
This journal follows ISO 9001 management standard and licensed under a Creative Commons Attribution 3.0 License.
Copyright © www.iiste.org