کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1986356 1540250 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recovery of oil from oil-in-water emulsion using biopolymers by adsorptive method
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Recovery of oil from oil-in-water emulsion using biopolymers by adsorptive method
چکیده انگلیسی


• Removal of oil using raw chitin has not been reported elsewhere.
• The percentage of oil removal was found to be higher at acidic pH.
• Hydrophobicity plays an important role for cutting fluid removal.
• It is an economical and efficient material for oil removal.

In the present study, it is aimed to identify, a low cost sorbent for the recovery of oil from oil-in-water emulsion using biopolymers such as chitin and chitosan. Chitin has the greater adsorption capacity than chitosan due to its hydrophobic nature. The characterizations of chitin and chitosan were done using FTIR, SEM, EDAX, XRD, TGA and DSC techniques. Under batch equilibrium mode, a systematic study was performed to optimize the various equilibrium parameters viz., contact time, pH, dosage, initial concentration of oil, and temperature. The adsorption process reached equilibrium at 40 min of contact time and the percentage removal of oil was found to be higher (90%) in the acidic medium. The Freundlich and Langmuir models were applied to describe the equilibrium isotherms and the isotherm constants were calculated. Thermodynamic parameters such as ΔG°, ΔH° and ΔS° were calculated to find out the nature of the sorption mechanism. The kinetic studies were investigated with reaction-based and diffusion-based models. The suitable mechanism for the removal of oil has been established.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 70, September 2014, Pages 399–407
نویسندگان
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