화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.21, 189-197, January, 2015
DOI10.1016/j.jiec.2014.02.024  Export Citation
Modification of surface behaviour of Eichhornia crassipes using surface active agent: An adsorption study
Sumanjit, Seema, R.K. Mahajan, and Vinod Kumar Gupta1, †
  • Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, India
  • 1Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
E-mail:
Eichhornia charcoal modified with cationic surfactant is used as an adsorbent. The characterization was done by Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller, X-ray diffraction, scanning electron micrograph, and point of zero charge measurements. Effect of contact time, initial dye concentration, adsorbent dose and temperature were studied. Experimental data were contemplated for various kinetic models and thermodynamic models and interpreted that adsorption followed second order kinetic model. Langmuir model deduced the maximum adsorption capacity as 103.2 mg g-1 at 323 K. Gibbs free energy, enthalpy and entropy have been calculated and the present adsorption system is speculated as spontaneous and endothermic in nature.
Keywords:Adsorption;Congo red;Kinetics;Isotherm;Cetyltrimethyl ammonium bromide
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