naa a22 4500 510820867 CHVBK 20180411083531.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11814-013-0080-1 doi (NATIONALLICENCE)springer-10.1007/s11814-013-0080-1 The adsorption of malachite green (MG) as a cationic dye onto functionalized multi walled carbon nanotubes [Elektronische Daten] [Mohammad Shirmardi, Amir Mahvi, Bayram Hashemzadeh, Abolfazl Naeimabadi, Ghasem Hassani, Mehdi Niri] Synthetic dyes are widely used by several industries to color their products. The discharge of colored wastewater into the hydrosphere causes serious environmental problems. We used functionalized multi wall carbon nanotubes as an adsorbent for the adsorption of cationic dye, malachite green, from aqueous solution. Based on information provided by the Iranian Research Institute of Petroleum Industry, carbon nanotubes are produced using a chemical vapor deposition (CVD) technique. These as-received MWCNTs were functionalized by acid treatment. The remaining dye concentration was read by UV-visible absorption spectroscopy at maximum adsorption wavelength. The effect of different operational parameters such as contact time, pH of solution, adsorbent dose and initial dye concentration were studied. The results showed that by increasing of contact time, pH and adsorbent dose the removal of dye increased, but by increasing initial dye concentration, the removal efficiency decreased. Adsorption isotherms and kinetics behavior of f-MWCNTs for removal of malachite green was analyzed, and fitted to various existing models. The experimental data were well correlated with the Langmuir isotherm with a maximum adsorption capacity (q m ) and regression coefficient (R2) of 142.85 mg/g and 0.997, respectively. The results of this study indicate that functionalized multi wall carbon nanotubes can be used as an effective adsorbent for the removal of dyes. Korean Institute of Chemical Engineers, Seoul, Korea, 2013 Adsorption nationallicence Carbon Nanotube nationallicence Dye nationallicence Isotherm nationallicence Kinetic Study nationallicence Shirmardi Mohammad Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut Mahvi Amir School of Public Health and Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran aut Hashemzadeh Bayram Department of Environmental Health, Khoy School of Nursing and Public Health, Urmia University of Medical Sciences, Urmia, Iran aut Naeimabadi Abolfazl Department of Environmental Health, School of Public Health, North Khorasan University of Medical Sciences, Bojnourd, Iran aut Hassani Ghasem Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut Niri Mehdi Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1603-1608 0256-1115 30:8<1603 2013 30 11814 https://doi.org/10.1007/s11814-013-0080-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-013-0080-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shirmardi Mohammad Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut NATIONALLICENCE 700 1- Mahvi Amir School of Public Health and Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran aut NATIONALLICENCE 700 1- Hashemzadeh Bayram Department of Environmental Health, Khoy School of Nursing and Public Health, Urmia University of Medical Sciences, Urmia, Iran aut NATIONALLICENCE 700 1- Naeimabadi Abolfazl Department of Environmental Health, School of Public Health, North Khorasan University of Medical Sciences, Bojnourd, Iran aut NATIONALLICENCE 700 1- Hassani Ghasem Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut NATIONALLICENCE 700 1- Niri Mehdi Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/8(2013-08-01), 1603-1608 0256-1115 30:8<1603 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer