کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
591883 1453884 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A cost-effective porous carbon derived from pomelo peel for the removal of methyl orange from aqueous solution
ترجمه فارسی عنوان
کربن متخلخل مصنوعی مؤثر از پوست پوملو برای حذف متیل نارنجی از محلول آبی است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی


• Porous carbon (PCs) was prepared by carbonization pomelo peel and KOH activation.
• The dose of KOH was researched in the material activation process.
• PCs prepared by us possess abundant micropores and mesopores.
• PCs-2 showed high adsorption efficiency for methyl orange (MO).
• The adsorption process for MO was studied in detail.
• The reusability of PCs-2 was high.

A cost-effective approach was developed to prepare a porous carbon samples (PCs) by the simple carbonization of pomelo peel followed by KOH activation. The resulting materials were characterized by different techniques, such as SEM, XRD, FTIR, XPS, and BET surface area measurement. And the prepared PCs with high special surface area were first used as adsorbent materials for removal of methyl orange (MO) and experimental results indicated that PCs-2 activated by the mixture of KOH and pre-carbonization product (weight ratio 2:1) possesses the best adsorption performance among different weight ratio samples. The kinetic adsorption of different initial concentrations could be accurately described by the pseudo-second-order model and overall rate process was apparently influenced by external mass transfer and intraparticle diffusion. Furthermore, the Langmuir isotherm model showed a better fit with experimental data than Freundlich model and the maximum adsorption capacity was determined to be 680.2 mg/g. Moreover, the thermodynamic parameters indicated that the adsorption process was spontaneous and exothermic. Results of this work are of great significance for environmental applications of PCs as promising adsorbent materials for organic pollutant from aqueous solutions.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 489, 20 January 2016, Pages 191–199
نویسندگان
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