Details

Autor(en) / Beteiligte

• Turp, Sinan Mehmet
• Ekinci, Necla

Titel

METHYLENE BLUE DYE ADSORPTION ISOTHERMS AND KINETICS VIA POROUS MATERIALS NATURALAND EXPANDED PERLITE

Ist Teil von

• Fresenius environmental bulletin, 2021-12, Vol.30 (12), p.13058

Ort / Verlag

Freising: Parlar Scientific Publications

Erscheinungsjahr

2021

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• In the present research study, natural perlite obtained specifically from the perlite mine at Balikesir, Turkey province, and expanded perlite samples that are produced at a temperature of 1000 °C were employed in order to remove the textile dye methylene blue from wastewater. In aqueous solutions, adsorption isotherm and kinetic models of methylene blue along with natural perlite and expanded perlite were determined to be in interaction. The adsorption capacities of natural perlite and expanded perlite for methylene blue were respectively 0.455 mg. g-1, and 0.365 mg. g-1. The most efficient removal rates were determined at the following conditions: 5 mg. L-1 initial dye concentration, 10 g. L-1 adsorbent dose within 60 minutes of contact time through 25 °C wastewater temperature. The adsorption process on natural perlite was detected to be randomly compatible with the Freundlich and Temkin isotherm models, whereas adsorption on expanded perlite was 99% compatible with the Temkin isotherm model. In this kinetic study, natural perlite and expanded perlite adapted to the pseudo-first and pseudo-second kinetic models. It was clear that the correlation value was higher (R2 = 0.99) for the pseudo-second kinetic model. The correlation value was not significant for the expanded perlite obtained for pseudo-first kinetic model. Both natural and expanded perlite were 99% compatible with the pseudo-second kinetic model.