Spent Bleaching Earth Treatment in a Pilot Scale Tubular Reactor using Subcritical Water Technology | ||||
| The International Conference on Chemical and Environmental Engineering | ||||
| Article 5, Volume 7, 7th International Conference on Chemical & Environmental Engineering, May 2014, Page 1-10 PDF (250.08 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccee.2014.35412 | ||||
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| Authors | ||||
| Rehab AbdelFattah1; N. A. Mostafa2; Mohamed S. Mahmoud1; Wael Abdelmoez1 | ||||
| 1Chemical Engineering department, Minia University, 61516, Egypt. | ||||
| 2Faculty of applied medical science, Taif University, Taif, KSA. Corresponding author: Tel:+201000859791. | ||||
| Abstract | ||||
| Abstract This work represents the extraction of oilsand free fatty acids from the spent bleaching earth using sub-critical water as a solvent in pilot scale batch reactors. Prior to using the pilot scale reactors, the extraction conditions were optimized using laboratory small batch reactor of 34 cm3 volume. The optimization of the extraction condition showed that the optimum temperature, feed to solvent ratio, and extraction time were 270 °C, 1:3(the solvent is just water), 20 min. The obtained data were used to design tubularreactor with 7 Kg capacity heated with an electric heater. The extraction was carried out using 750 grams of the spent bleaching earth with 1:3 ratio. The results showed that more than 95% of the oil absorbed in the spent bleaching earth was recovered under 210 0C. The heating up period was 72 minutes with holding extraction time of 20 minutes at 210 0C and cooling down for 25 minutes. | ||||
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