Date

4-2008

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Amelia E. Parao

Committee Member

Catalino G. Alfafara, Jerico R. Aguila

Abstract

A study was conducted to determine the thermodynamic properties of adsorption Basic Magenta and Disperse Rubine SGL Dyes using bentonite clay as adsorbent.The effects of different temperatures (35°C, 45°C, and 55°C) on the adsorption kinetics and the adsorption isotherm of each dye were determined. The decay curves of each dye at different temperatures show that an increase in temperature effects an increase in the maximum adsorptive capacity of the dye into the adsorbent. For Basic Magenta dye, the maximum adsorptive capacity at 35°C, 45°C, and 55°C were 368.68, 400.82 and 1768.45mg dye/g adsorbent, respectively. For Disperse Rubine SGL dye, the maximum, respectively. For Disperse Rubine SGL dye, the maximum adsorptive capacity at 35°C, 45°C, and 55°C were 0.03, 0.07 and 0.37mg dye/g adsorbent respectively. The Basic Magenta dye-bentonite system fitted with the Langmuir Isotherm model while Disperse Rubine SGL-bentonite system fitted with the Freundlich isotherm curve. The affinity of the dyes into the bentonite clay was determined by calculating the thermodynamic parameters of adsorption; (1)Enthalpy (Disperse rubine SGL: 28.20 KJ/mol: Basic Magenta: 16.63KJ/mol), (2) Entropy (Disperse Rubine SGL35°C, 80.60J/mol/K: 45°C, 69.40J/mol/K: and 55°C, 85.51 J/mol/K:Basic Magenta: 35°C, 54.00KJ/mol/K; 45°C, 52.22KJ/mol/K; and 55°C, 50.62KJ/mol/K) and (3) Gibb's free energy ( Disperse Rubine SGL: 35°C, 3.36KJ/mol; 45°C, 6.1 KJ/mol; and 55°C, 136J/mol; Basic Magenta:35°C, -12.5KJ/mol; 45°C, -13.0KJ/mol; and 55°C, -17.1KJ/mol).

Language

English

LC Subject

Textile fibers. Dyes and dyeing--Textile fabrics. Land treatment of wastewater

Call Number

LG 993.5 2008 E62 G35

Document Type

Thesis

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