Nitric acid heating reflux modified multi-walled carbon nanotubes (HMWCNTs) were used for the removal of vanadium(V) in aqueous solution. The removal rate of vanadium(V) decreased with the increase of the initial vanadium(V) concentration and the solution pH, and increased with the increase of reaction time, HMWCNTs amount and solution temperature. The adsorption equilibrium and dynamic kinetics fitted the Langmuir adsorption isotherm and pseudo-second order models. The results obtained by scanning electron micrography and Fourier transform infrared spectroscopy analysis revealed that the hydroxyl and carboxyl functional groups are mainly responsible for the vanadium adsorption. This study showed that the HMWCNTs proved to be a considerable adsorbent for the removal of vanadium from wastewater.
机构:
Tsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R ChinaTsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R China
Sun, WX
Huang, ZP
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Tsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R ChinaTsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R China
Huang, ZP
Zhang, L
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Tsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R ChinaTsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R China
Zhang, L
Zhu, J
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Tsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R ChinaTsing Hua Univ, Sch Mat Sci & Engn, Electron Microscopy Lab, Beijing 100084, Peoples R China
机构:
Islamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, IranIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Enayatpour, Behdad
Rajabi, Mostafa
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Islamic Azad Univ, East Tehran Branch, Young Researchers & Elite Club, Tehran, IranIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Rajabi, Mostafa
Moradi, Omid
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Islamic Azad Univ, Shahre E Qods Branch, Dept Chem, Tehran, IranIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Moradi, Omid
Asdolehzade, Neda
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Islamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, IranIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Asdolehzade, Neda
Nayak, Arunima
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Graph Era Univ, Dept Chem, Dehra Dun, Uttar Pradesh, IndiaIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Nayak, Arunima
Agarwal, Shilpi
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Univ Johannesburg, Dept Appl Chem, Johannesburg, South AfricaIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
Agarwal, Shilpi
Gupta, Vinod Kumar
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Univ Johannesburg, Dept Appl Chem, Johannesburg, South Africa
King Abdulaziz Univ, Dept Biol Sci, Jeddah 21589, Saudi ArabiaIslamic Azad Univ, Dept Chem, Shahre Ray Branch, Tehran, Iran
机构:
Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Zhong, R
Cong, HT
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Cong, HT
Liu, C
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Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R ChinaChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China