Adsorptive Removal of Reactive Blue ۲۵ and Reactive Blue ۴۹ Dyes from Aquatic Solutions Using Zinc Oxide Nanoparticles
Publish place: Iranian Journal of Analytical Chemistry، Vol: 8، Issue: 2
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJAC-8-2_008
تاریخ نمایه سازی: 8 اسفند 1400
Abstract:
In this work, Zinc oxide nanoparticles (ZnONPs) were utilized as a potential adsorbent for the adsorption of Reactive Blue ۲۵ (RB۲۵) and Reactive Blue ۴۹ (RB۴۹) dyes from aqueous solutions. ZnONPs adsorbent was synthesized by precipitation method and characterized using XRD, TEM, SEM, and N۲ adsorption /desorption techniques. The effect of various parameters including solution pH, shaking time, adsorbent amount and initial concentration of the dyes on the adsorption efficiency was studied. The experimental adsorption data analyzed with various kinetic and isothermal methods. The adsorption kinetic study revealed that the adsorption process followed pseudo-second-order kinetic model. Additionally, adsorption isotherm studies indicated that adsorption equilibrium data were well fitted to Langmuir model and accordingly, the maximum adsorption capacity of the adsorbent for RB۲۵ and RB۴۹ found to be ۳۴.۳۶ and ۳۴.۶۰ (mg/g), respectively. From this study, ZnONPs is suggested as an effectual adsorbent for the removal of dyes from aqueous samples.
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Authors
Zahra Monsef Khoshhesab
Department of Chemistry, Payame Noor University, ۱۹۳۹۵-۴۶۹۷, Tehran, Iran
Mohammadreza Mohammadi Pour Salehloo
Department of Chemistry, Payame Noor University, ۱۹۳۹۵-۴۶۹۷, Tehran, Iran
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