Optimization of Important Factors on the Adsorption of Methyl Violet by Modified Palm Fiber Using Experimental Design Method
Publish place: Advanced Journal of Chemistry-Section A، Vol: 3، Issue: 3
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_AJCS-3-3_001
تاریخ نمایه سازی: 28 فروردین 1399
Abstract:
Via Box-Behnken method, we evaluated the influence of various factors on absorption, including the amount of absorbent, the speed of stirring the solution and absorbent, pH of solution, time of contact, and various concentrations of violet methyl colour, to obtain optimum conditions. The maximum extent of violet methyl removal was found at 100 mg/L concentration, pH = 4.6, contact time = 50 minutes, 120 rotation speed, and absorbent dose = 1.488 g/L (0.0744 gram in 50 millilitre). In order to determine the reaction mechanism, two kinetic models were used, namely pseudo-first-order and pseudo-second kinetics models. The adsorption kinetics followed pseudo-second order model, and the mechanism of chemical reaction was the rate-limiting step. Furthermore, the Langmuir and Freundlich Isotherms were considered for absorbing the violet methyl on the palm fiber absorbent. The adsorption isotherms showed a balanced relationship between the materials adsorbed on the adsorbent (qe) and a balanced concentration in the solution (Ce) at a constant temperature. This method was used to remove the violet methyl colour from real samples such as industrial sewage, tap and river water.
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Authors
Maryam Abrishamkar
Department of Chemistry, Science and research Branch, Islamic Azad University, Ahvaz, Iran | Department of Chemistry, Islamic Azad University of Ahvaz, Ahvaz, Iran
Rashin Andayesh
Department of Chemistry, Science and research Branch, Islamic Azad University, Ahvaz, Iran | Department of Chemistry, Islamic Azad University of Ahvaz, Ahvaz, Iran
Hossein Hodaee
Department of Chemistry, Science and research Branch, Islamic Azad University, Ahvaz, Iran | Department of Chemistry, Islamic Azad University of Ahvaz, Ahvaz, Iran
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