Adsorption behavior of PB(II) onto xanthated rubber (Hevea brasiliensis) leaf powder

Wan Mohd Khalir, Wan Khaima Azira and Megat Hanafiah, Megat Ahmad Kamal and Mat So'ad, Siti Zaiton and Wan Ngah, Wan Saime (2011) Adsorption behavior of PB(II) onto xanthated rubber (Hevea brasiliensis) leaf powder. Polish Journal of Chemical Technology, 13 (4). pp. 86-92. ISSN 15098117

PDF Restricted to Registered users only until 2015. Download (1MB) | Request a copy

Abstract

A plant waste, rubber (Hevea brasiliensis) leaf powder was modified with carbon disulfide (xanthation) for the purpose of introducing sulfur groups, and the adsorbent performance in removing Pb(II) ion was evaluated. Pb(II) adsorption was confirmed by spectroscopic analysis, which involved Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The amount of Pb(II) adsorbed increased with increasing pH, contact time and concentration but slightly decreased with increasing ionic strength. Adsorption equilibrium was achieved in less than 60 min and followed the pseudo-second order model. The isotherm data indicated that Pb(II) adsorption on xanthated rubber leaf (XRL) fitted well with Langmuir isotherm model. The maximum adsorption capacity computed from the Langmuir isotherm model was 166.7 mg/g. Pb(II) adsorption occurred via ion-exchange and complexation mechanisms.

Item Type:	Article (Journal)
Additional Information:	5652/14526
Uncontrolled Keywords:	Adsorption, Isotherm, Kinetic, Lead, Xanthated rubber leaf powder
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy > Department of Pharmaceutical Chemistry
Depositing User:	Dr. Siti Zaiton Mat So'ad
Date Deposited:	14 Feb 2012 09:35
Last Modified:	14 Feb 2012 09:35
URI:	http://irep.iium.edu.my/id/eprint/14526

Actions (login required)

View Item