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مقالات فارسیISIکنفرانسهاژورنالها

Low-cost magnetic char derived from oily sludge for Methylene Blue dye removal: optimization, isotherm, and kinetic approach

محل انتشار: فصلنامه پیشرفت ها در فناوری محیط زیست، دوره: 8، شماره: 4
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 145

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لینک ثابت به این مقاله:
https://civilica.com/doc/1583797

شناسه ملی سند علمی:

JR_AET-8-4_007

تاریخ نمایه سازی: 20 دی 1401

چکیده مقاله:

The excessive increase of dye-contaminated wastewater has become an environmental challenge worldwide, menacing human beings, the environment, and the ecosystem. In light of this subject, the current study for the first time evaluated the potential of oily sludge with its intrinsic magnetic characteristics for Methylene Blue adsorption. A single-step pyrolysis approach was employed to convert oily sludge to magnetic char (Fe۳O۴/Char). The effects of operational parameters such as pH, contact time, Methylene Blue concentration, and adsorbent dose were examined. The maximum adsorption was ۸۴% with a capacity of ۸۸.۷۱ mg/g at a pH of ۳, ۱۰۰ mg/L Methylene Blue concentration, ۱۰۰ mg Fe۳O۴/Char concentration, and ۱۲۰ min contact time. The Redlich-Peterson isotherm model (R۲= ۰.۹۸۵۴) best described the adsorption experiment, which revealed that the adsorption process followed a mixed adsorption mechanism, namely physical and chemical adsorption. Moreover, the Elovich kinetic model was more suitable to represent the Methylene Blue adsorption onto Fe۳O۴/Char, confirming a chemisorption process. The significant function of the sludge-based char with high iron content in the adsorption of Methylene Blue provides insight into the inherent potential of oily sludge as a promising approach for removing hazardous dyes.

کلیدواژه ها:

oily sludge ، Methylene Blue adsorption ، Magnetic char ، kinetic modeling

نویسندگان

Saeedeh Rastgar

Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

Hassan Rezaei

Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

Habibollah Younesi

Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran

Hajar Abyar

Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

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