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Adsorptive removal of Zn (II) from aqueous solution using rice husk-based activated carbon.

Ghazali, Muhammad Zubair (2012) Adsorptive removal of Zn (II) from aqueous solution using rice husk-based activated carbon. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

The study of rice husk as potential activated carbon as a low-cost adsorbent to remove zinc (Zn) from Zn(II) ion solution was investigated. Raw rice husk as an agricultural waste was chosen for this project due to its huge amount of production during milling activities. The scope of this study covers from preparation ofthe rice husk activated carbon (RHAC) to the experimental works for removal of Zn(II) ion from aqueous solution. The preparation involves three stages which are preparation ofraw rice husk to size of 63um, digestion and carbonization. 63um raw rice husks were digested with 1.0 M sodium hydroxide (NaOH) solution for 24 hours. The treated rice husks were then carbonized at 500°C for 1 hour in order to remove volatile organic constituents leaving behind highly porous carbonaceous materials, Once the activated carbon was prepared, mixing process with Zn(II) ion solution at various contact time ranging from 5 to 120 minutes was carried out to study the adsorption capacity. In this study, pores development in rice husk was analyzed using FESEM for each stage. Other analyses on rice husk activated carbon were also conducted using BET Surface Area Analyzer, Fourier Transmitter Infrared Spectroscopy (FTIR), CHN Elemental Analyzer, and X-ray Diffraction (XRD) for the characterization study. The adsorption capacity towards metal ion was determined using Atomic Adsorption Spectroscopy (AAS). Isotherm models are also developed, which is Langmuir and Freundlich Isotherm. The results obtained from the adsorption study showed that rice husk has a potential to be converted to adsorbent for the removal ofheave metals.

Item Type: Final Year Project
Academic Subject : Academic Department - Chemical Engineering - Separation Process
Subject: T Technology > TP Chemical technology
Divisions: Engineering > Chemical
Depositing User: Users 2053 not found.
Date Deposited: 24 Oct 2013 14:55
Last Modified: 25 Jan 2017 09:40
URI: http://utpedia.utp.edu.my/id/eprint/9646

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