Basic Dye Adsorption onto Clay/MnFe2O4 Composite: A Mechanistic Study. (1st April 2017)

• Record Type: Journal Article
• Authors: Kanwal, Adeela; Bhatti, Haq Nawaz; Iqbal, Munawar; Noreen, Saima
• Is Part Of: Water environment research. Volume 89:Number 4(2017)
• Page Start: 301
• Page End: 311
• Publication Date: 2017-04-01
• Subjects: basic dye -- clay -- composite -- isotherm -- kinetic -- thermodynamics; Water quality management -- Periodicals; Water -- Purification -- Periodicals; Water -- Pollution -- Periodicals; Water -- Pollution; Water -- Purification; Water quality management; Sewage; Water Pollution; Periodicals; Electronic journals; Periodicals; 628.16
• DOI: 10.2175/106143017X14839994522984
• Languages: English
• ISSNs: 1061-4303

Abstract

Abstract : Native, HCl pretreated clay and MnFe2 O4 /clay composite were investigated as an adsorbent for crystal violet (CV) removal. The adsorption behavior of dye was studied in batch experiments as a function of contact time, adsorbent dose, pH, dye initial concentration and temperature. The medium pH 8, contact time 30 min, MnFe2 O4 /clay composite dose 0.05 mg/L, temperature 35 °C and 100 mg/L dye initial concentration furnished maximum CV adsorption. Adsorption data fitted well to the Langmuir isotherm model and maximum CV dye adsorption capacity of composite was 49.74 mg/g. The thermodynamic parameters revealed that the adsorption process of CV was exothermic and spontaneous in nature. CV adsorption followed the pseudo second order kinetic model. MnFe2 O4 /clay composite exhibited good CV adsorption capacity and can be used as an alternative adsorbent for the removal of basic dyes from effluents.