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High-Performance Removal of Toxic Phenol by Single-Walled and Multi-Walled Carbon Nanotubes: Kinetics, Adsorption, Mechanism and Optimization Studies Publisher



Dehghani MH1, 2 ; Mostofi M1 ; Alimohammadi M1 ; Mckay G3 ; Yetilmezsoy K4 ; Albadarin AB5 ; Heibati B1 ; Alghouti M6 ; Mubarak NM7 ; Sahu JN8
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Source: Journal of Industrial and Engineering Chemistry Published:2016


Abstract

The adsorption capabilities of two nano-sized adsorbents: multi-walled carbon nanotubes (MWCNTs) and single-walled carbon nanotubes (SWCNTs) were investigated for the removal of toxic phenol. The maximum adsorption capacities of MWCNTs and SWCNTs were determined as 64.60 and 50.51 mg/g, respectively. Adsorption kinetics followed the pseudo-second order model for both adsorbents. The optimum conditions using SWCNTs and MWCNTs were pH 6.57 and 4.65, phenol concentration 50 and 50 mg/L, dose 1.97 and 2 g/L and contact time 36 and 56 min, respectively. The results indicated that MWCNTs and SWCNTs were proven as high-performance adsorbents for toxic phenol removal from wastewater. © 2015 The Korean Society of Industrial and Engineering Chemistry.
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