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Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters

  • Authors (legacy)
    Corresponding: Noorimotlagh Z.
    Co-authors: Nourmoradi H., Rahmati Z., Javaheri M., Moradnejadi K. and Noorimotlagh Z.
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  • gnest_01738_published.pdf
  • Paper ID
    gnest_01738
  • Paper status
    Published
  • Date paper submitted
  • Date paper accepted
  • Date paper online
DOI
https://doi.org/10.30955/gnj.001738
Abstract

This study was conducted to investigate the effect of praestol, as a coagulant-aid, to improve coagulation-flocculation process in the removal of disperse red 60 from aqueous solutions. The effect of various parameters including coagulants dose (10-1000 mg l-1), praestol dose (0-1000 mg l-1), solution pH (3-11), initial dye concentration (100-500 mg l-1), flocculation speed (30-60 rpm), flocculation time (15-30 min), settling time (5-60 min) and ionic strength (0-6 mg l-1) was evaluated on the dye removal. The dye removal efficiency was substantially increased by using praestol in the concentration of 80 mg l-1 and 400 mg l-1 for coagulation with alum and polyaluminum chloride (PACl), respectively. The maximum dye removal by alum coupled with praestol (Al-P) and PACl coupled with praestol (PA-P) was found to be 97.8% and 98.7%, respectively that were occurred at pH 7. The results showed that the application of PA-P or Al-P can be effectively used to remove disperse red 60 (DR 60) in aqueous solutions.

 

Keywords
Wastewater dye Coagulation Praestol Alum PACl.
Cite this article
Noorimotlagh, Z. et al. (2016) “Effect of Praestol as a Coagulant-Aid to Improve Coagulation-Flocculation in Dye containing Wastewaters”, Global NEST Journal, 18(1). Available at: https://doi.org/10.30955/gnj.001738.
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  • gnest_01738_published.pdf