• 文献标题:   Equilibrium and kinetics of Safranin O dye adsorption on MgO decked multi-layered graphene
  • 文献类型:   Article
  • 作  者:   ROTTE NK, YERRAMALA S, BONIFACE J, SRIKANTH VVSS
  • 作者关键词:   mgo decked multilayered graphene, composite, adsorbent, adsorption, dye removal, water purification
  • 出版物名称:   CHEMICAL ENGINEERING JOURNAL
  • ISSN:   1385-8947 EI 1873-3212
  • 通讯作者地址:   Univ Hyderabad
  • 被引频次:   31
  • DOI:   10.1016/j.cej.2014.07.065
  • 出版年:   2014

▎ 摘  要

MgO decked multi-layered graphene (MDMLG) is synthesized using a rudimentary combustion process involving ignition of Mg in the presence of dry ice. MDMLG is used as an adsorbent to remove Safranin 0 (SO) dye from water. Adsorption related experimental data is best fitted to Langmuir adsorption isotherm indicating that adsorption of SO dye onto MDMLG is uniform. Mono layer adsorption capacity of MDMLG is similar to 3.92 x 10(-4) mol/g. Mean adsorption energy is similar to 36.23 kJ/mol indicating that chemisorption is the major mode of adsorption. Pseudo 2nd order rate equation best describes the adsorption kinetics of SO dye onto MDMLG. Regeneration of SO dye in ethanol is similar to 73.5%, which also indicates chemisorption type adsorption. MDMLG is also found to remove a mixture of dyes from a real textile effluent. (C) 2014 Elsevier B.V. All rights reserved.