دورية أكاديمية
Adsorption of Di-N-butyl Phthalate onto Nutshell-Based Activated Carbon. Equilibrium, Kinetics and Thermodynamics
| العنوان: | Adsorption of Di-N-butyl Phthalate onto Nutshell-Based Activated Carbon. Equilibrium, Kinetics and Thermodynamics |
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| المؤلفون: | Z.Q. Fang, H.J. Huang |
| المصدر: | Adsorption Science & Technology, Vol 27 (2009) |
| بيانات النشر: | SAGE Publications, 2009. |
| سنة النشر: | 2009 |
| المجموعة: | LCC:Physical and theoretical chemistry |
| مصطلحات موضوعية: | Physical and theoretical chemistry, QD450-801 |
| الوصف: | The adsorption of di-n-butyl phthalate (DBP) from aqueous solution was studied in a batch adsorption system. Activated carbons from coals, coconut shell and nutshell were evaluated to determine the most effective adsorbent. Kinetic and equilibrium studies were investigated at various initial DBP concentration (3–6 mg/ℓ), adsorbent dosage (40–140 mg/ℓ), suspension pH (3–9) and temperature (25–55 °C). Equilibrium adsorption isotherms were analyzed using the Langmuir, Freundlich and Temkin models. The experimental isotherms were S-type, with the Freundlich isotherm giving a good description of the data obtained at lower DBP concentration. The pseudo-first-order, pseudo-second-order and intra-particle diffusion models were used to fit the kinetic adsorption data. It was found that the adsorption of DBP followed pseudo-first-order kinetics, with the adsorption rate being controlled by both film and pore diffusion. The enthalpy, entropy and Gibbs' free energy constants were calculated. It was found that the adsorption was spontaneous and endothermic, with favourable adsorption capacities being observed at higher temperatures. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0263-6174 2048-4038 |
| العلاقة: | https://doaj.org/toc/0263-6174Test; https://doaj.org/toc/2048-4038Test |
| DOI: | 10.1260/0263-6174.27.7.685 |
| الوصول الحر: | https://doaj.org/article/0763ee92079f47358de63c1870cfd729Test |
| رقم الانضمام: | edsdoj.0763ee92079f47358de63c1870cfd729 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 02636174 20484038 |
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| DOI: | 10.1260/0263-6174.27.7.685 |