The using of Bentonite/Amberlite XAD-7 composite material for the adsorption of Methylen Blue and characterization of adsorbent

Barak H., Yönten V.

Global Summit on Advanced Materials and Sustainable Energy (G-AMSE22) , Van, Turkey, 3 - 04 October 2022, pp.14-16

  • Publication Type: Conference Paper / Full Text
  • City: Van
  • Country: Turkey
  • Page Numbers: pp.14-16
  • Van Yüzüncü Yıl University Affiliated: Yes


The human population and the developing of technology are damaging and polluting our natural resources. Protecting our resources has recently become a necessity. Especially the removal and disposal of some toxic, harmful and carcinogenic wastes in drinking water has been an issue that should be emphasized by scientists. Some important techniques and processes are used in this field. In our study, the adsorption process, which is a very preferred method although it is cheap, easy and economical, was used. Methylene Blue (MB), a cationic dyestuff, was selected as the pollutant to be adsorbed and synthetic solutions were prepared. Both calibration and experimental data were calculated quantitatively by measuring the dyestuff at different concentrations in a UV Spectrophotometer. Again in our study, Bentonite/Amberlite XAD-7 composite material was formed by mixing cheap and easily available bentonite as adsorbent material and Amberlite XAD-7, which is a polymeric resin, under certain ambient conditions. Characterization of this material was done with Scanning Electron Microscope (SEM) and Fouirer Transform Infrared Spectrophotometer (FTIR) devices. As a result of the characterization, the structural form of the material was clarified, especially when the structure before and after adsorption was considered, the percentages of the elements and compounds in the dyestuff attached to the material by immobilization changed. These incremental changes proved that the adhesion event was positive. The result show that the composite material’ a adsorption capacity was calculate as 14 mgg-1. Langmuir , Freudlich and Temkin isotherms were used to describe the adsorption equilibriums. Temkin models yields a somewhat better than Freudlich and Langmuir models on adsorption of dye on composite material as reflected with correlation coefficients (R2). The data and data obtained as a result of our study have been brought to the literature and practice.