Modification of Langmuir model for simulating initial pH and temperature effects on sorption process. Issue 15 (12th October 2020)

• Record Type: Journal Article
• Authors: Naji, Laith A.; Jassam, Salim H.; Yaseen, Mohammed J.; Faisal, Ayad A. H.; Al-Ansari, Nadhir
• Is Part Of: Separation science and technology. Volume 55:Issue 15(2020)
• Page Start: 2729
• Page End: 2736
• Publication Date: 2020-10-12
• Subjects: Langmuir model -- simulation -- sorption -- waste foundry sand -- solute transport; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2019.1655055
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: The present study modifies the sorption isotherm for simulating the influences of initial pH and temperature variations on the cadmium sorption from contaminated water using waste foundry sand based on Langmuir, Freundlich, and Temkin models. Results proved that the Langmuir expression is able to adopt these effects by relating sorption capacity and affinity constants with pH and temperature of aqueous solution through exponential relationships (determination coefficient = 0.9375). The present model is assumed that the sorption process occurs through acidic functional groups and this is consistent with FTIR outputs. Interaction of cadmium/WFS is found to be exothermic by thermodynamic analysis.