Optimization of malachite green cationic dye adsorption process by chitosan-ethyl acrylate polymer biosorbent using Taguchi model

Subject Areas : Chemistry and Chemical Engineering of all specializations

Nasim Ziaei far ^{1 *} , Saber Khodaei ²

1 - Assistant Prof. of applied Chemistry, Department of science, branch, Islamic Azad University, Maragheh, Iran.
2 - Department of Statistics, Maragheh branch, Islamic Azad University, Maragheh, Iran.

Received: 2024-01-05 Accepted : 2024-04-20 Published : 2024-07-23

Keywords: polymeric bioabsorbent, chitosan, malachite green, Taguchi,

Abstract :

Many dyes, such as malachite green, produce toxic by-products due to various reactions, which are harmful to aquatic organisms and humans. Surface absorption technology has wide applications in water and wastewater treatment. In this study, the natural biopolymer chitosan was modified with the organic compound of ethyl acrylate and was used for the surface absorption of malachite green cationic dye. The obtained compound was identified using infrared spectroscopy. To investigate the decolorization characteristics of the synthesized compound, effective factors such as pH, concentration of absorbent, concentration of dye, temperature and the effect of different salts were investigated. The results showed that increasing the pH and amount of adsorbent has a positive effect on the amount of color removal, Taguchi method was used to investigate the effect and determine the optimal conditions of each of these parameters. The results of the experiment design showed the highest parameter, gram of bioabsorbent compared to other parameters and the lowest effect related to temperature in surface absorption.

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