International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2528

Full Length Research Paper

Theoretical and experimental studies for wool wax recovery by flotation

Mohsen A. Hashem1* and Mohammednoor N. Almaghrabi2
1College of Engineering, Jazan University, P. O. Box 114 Jazan, Kingdom of Saudi Arabia. 2Mining Engineering Department, Faculty of Engineering, KING ABDULAZIZ UNIVERSITY, P.O. Box 80204  Jeddah, 21589 Kingdom of Saudi Arabia.
Email: [email protected]

  •  Accepted: 05 November 2013
  •  Published: 09 November 2013

Abstract

Theoretical and experimental studies have been performed to analyze the flotation processes for recovery of wool wax from an industrial effluent by air flotation. Batch flotation process was carried out at different experimental conditions and different air flow rates. The results obtained show that wool wax can be successfully recovered from the tested effluent using batch air flotation. The percentage of wax recovery increased with increasing the flotation time, that 90% wax recovery was achieved within 10 min. These high recoveries reduce extraction costs. Wax recovery was found to decrease with increasing the initial concentration of wax/water emulsion. The highest percentage recovery of wax was obtained at a column working height approximately eight times the diameter of the flotation column at an emulsion of pH value of 9.0, inlet flow rate 1560 ml/min at a wool-soaping concentration 0.5 g/L. An appropriate kinetic model was identified to represent the behavior of wool wax recovery from an industrial effluent by air flotation.

Key words: Wool wax, recovery, air flotation, industrial effluents.