Synthesis and characterisation of novel organopalygorskites for removal of p-nitrophenol from aqueous solution: isothermal studies

Journal of Colloid and Interface Science
Binoy SarkarRavi Naidu

Abstract

Organopalygorskites were synthesised by using dimethyldioctadecylammonium bromide (DMDOA) and cetylpyridinium chloride (CP) with surfactant loadings equivalent to 100% and 200% CEC of the palygorskite. The four organopalygorskites, thus produced, were characterised by Fourier Transform Infrared Spectroscopy (FTIR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and zeta potential measurement. FTIR and TGA data demonstrated that higher surfactant loadings as well as long branched chain DMDOA produced highly ordered surfactant conformation. SEM morphological results showed that the organopalygorskites had less entangled fibres than the unmodified palygorskite. The zeta potential values showed positive charge formation on the organopalygorskites surface when they were synthesised with surfactant loadings equivalent to 200% CEC of the palygorskite. The organopalygorskites were tested for adsorption of p-nitrophenol (PNP) with a special focus on the adsorption isotherms. The adsorption data could be fitted with multiple isothermal models indicating that the adsorption was controlled by multiple mechanisms. Sorbent loading rate, initial pH, temperature and ionic strength might all affect the adsorption process. ...Continue Reading

References

Jul 28, 2004·Journal of Colloid and Interface Science·Yunfei XiRay L Frost
Oct 13, 2004·Journal of Colloid and Interface Science·Cheng-Cai WangHuan-Ping Chao
Sep 7, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Yunfei XiThor Bostrom
May 8, 2007·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ray L FrostYunfei Xi

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Citations

Jan 26, 2013·Journal of Hazardous Materials·Binoy SarkarRavi Naidu
Dec 5, 2012·Journal of Colloid and Interface Science·Yuri ParkRay L Frost
Apr 11, 2012·Journal of Colloid and Interface Science·Runliang ZhuKaixun Tian
Aug 27, 2011·Journal of Hazardous Materials·Barbara DmochowskaGrzegorz Węgrzyn
Sep 22, 2010·Journal of Hazardous Materials·Binoy SarkarRavi Naidu
Aug 3, 2010·Journal of Hazardous Materials·Binoy SarkarRavi Naidu
Jul 21, 2015·Journal of Colloid and Interface Science·Layaly ObeidAgnès Bée
Jul 22, 2015·Journal of Colloid and Interface Science·Yujie ZhangAiqin Wang
Nov 11, 2020·Journal of Environmental Management·Po-Hsiang Chang, Binoy Sarkar

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