Temperature Effects on Adsorption Rate for Azo Dye Removal From Textile Waste Water Using Activated Bentonite Clay


  • Atif Khan University of Engineering and Technology Lahore
  • Syed Hassan Javed Naqvi Department of Chemical EngineeringUET Lahore
  • Shabana Afzal Department of Basic Sciences MNS UET Multan
  • Faisal Rehman
  • Abdul Rehman




Azo-dye, adsorption, Phosphoric, Acetic, Citric and Oxalic acids, SEM, FTIR, UV.


Waste water from the textile industry is one of the major sources of contamination causing serious health problems. In textile waste water, dyes are the main pollutant. In this research work textile waste water was treated with various organic acid-activated clays to remove the dyes. Pink Azo dye was selected as a component to remove from waste water. Adsorbent selected was bentonite clay and was activated by acids such as phosphoric, acetic, oxalic, and citric acids. Adsorbent characteristics have been analyzed through infrared spectroscopy (FTIR) and Scanning Electron Microscope (SEM) while the removal of dye at various temperatures has been analyzed through Ultraviolet (UV) analysis. It was observed that the bentonite clay-treated with phosphoric acid had relatively maximum capacity to remove the dye while the clay treated with oxalic acid got minimum capacity to remove the dye from same waste water.

Author Biographies

Atif Khan, University of Engineering and Technology Lahore

Lecturer in Department of Chemical and Polymer Engineering UET Lahore (Fsd Campus)

Syed Hassan Javed Naqvi, Department of Chemical EngineeringUET Lahore

Professor in Department of Chemical Engineering

Shabana Afzal, Department of Basic Sciences MNS UET Multan

Assistant Professor Chemistry 

MNS UET Multan


Ahmad, A., Mohd-Setapar, S. H., Chuong, C. S., Khatoon, A., Wani, W. A., Kumar, R., & Rafatullah, M. Recent advances in new generation dye removal technologies: novel search for approaches to reprocess wastewater. RSC Advances,2015, 5(39), 30801-30818.

Ahsan, T., Man, W., & Qureshi, M. A. Mean reverting financial leverage: theory and evidence from Pakistan. Applied Economics, 2016,48(5), 379-388.

Ali, I., Asim, M., & Khan, T. A. Low cost adsorbents for the removal of organic pollutants from wastewater. Journal of environmental management,2012 113, 170-183.

Asfaram, A., Ghaedi, M., Agarwal, S., Tyagi, I., & Gupta, V. K Removal of basic dye Auramine-O by ZnS: Cu nanoparticles loaded on activated carbon: optimization of parameters using response surface methodology with central composite design. RSC Advances,2015, 5(24), 18438-18450.

Atalay, S., & Ersöz, G. (2016). Introduction Novel Catalysts in Advanced Oxidation of Organic Pollutants 2016, (pp. 1-5).






Engineering Sciences