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Removal of Heavy Metals Using Fish Scales

Karim, Mohd Fadly (2005) Removal of Heavy Metals Using Fish Scales. universiti teknologi petronas. (Unpublished)

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Abstract

The selection of activated carbon has always preceded other adsorbents as the material is the most versatile adsorbent in industry. However, the trend nowadays is aimed at diversifying the origin of adsorbent most of which comes from micro organisms and biomass product. This project is aimed to study the feasibility of using fish scale as industrial adsorbent to remove heavy metal from its aqueous solution. The adsorptive nature of three types of metals namely Copper (Cu), Nickel (Ni) and Lead (Pb) on fish scale are studied independently. These objectives were achieved via batch experiment whereby a set of metal solution is added with the fish scales and the adsorption test was carried out. The fish scales were first washed with deionized water and further grinded into powdered form (<500um). Fish scales activation was not implemented inthis study. The effects of initial metal concentration and temperature were studied in the adsorption test. The effect of initial metal concentration was studied at lOppm, 30ppm and 50ppm while the effect oftemperature was studied at 20°C, 30°C, 40°C and 50°C. Atomic Absorption Spectrophotometer (A.A.S) was usedto determine the concentration of the identified metal in the particular solution. Fourier Transform Infrared Spectrophotometer (FTIR) was used to determine the functional group of the fish scales. Batch experiments and isotherm kinetics studies were carried out to investigate the effect of contact time, initial concentration of the adsorbate, particle size and temperature. It was noted that an increase in the metal concentration and temperature and a reduction in particle size resulted in an increase in the metal uptake per unit weight of adsorbent. For temperature effect, however the trend increases up to a maximum temperature then decreases. The maximum temperature depends on the type ofheavymetal and they differ from one another. Langmuir and Freundlich adsorption isotherms were applied to calculatethe thermodynamics properties of the adsorption process. The feasibility and IV spontaneous nature of adsorption process is well confirmed from thenegative values of -AG0 The positive values of enthalpy change (AH°) further suggest the endothermic nature, while positive AS0 values reflect the affinity of the adsorbent materials towards lead and also as an indication that the disorder of the adsorption process increases. The FTIR analysis showed that there are a lot of functional group that exist on the surface of the fish scales; hydroxyl, carbonyl, carboxyl, amides, amines, and esters.

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: 30 Sep 2013 16:55
Last Modified: 25 Jan 2017 09:46
URI: http://utpedia.utp.edu.my/id/eprint/7806

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