Premium
Magnetically separable CoFe 2 O 4 /Co x Fe y /activated carbon composites for Cd(II) removal from wastewater
Author(s) -
Xu Jingcai,
Hong Bo,
Jin Hongxiao,
Jin Dingfeng,
Peng Xiaoling,
Wang Xinqing
Publication year - 2017
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3662
Subject(s) - adsorption , chemistry , freundlich equation , activated carbon , enthalpy , isothermal process , langmuir , kinetic energy , magnetic nanoparticles , nuclear chemistry , analytical chemistry (journal) , nanoparticle , inorganic chemistry , thermodynamics , nanotechnology , chromatography , materials science , physics , quantum mechanics
CoFe 2 O 4 and Co x Fe y were anchored into activated carbon (AC) to synthesize CoFe 2 O 4 /Co x Fe y /AC composites using the sol–gel method for Cd(II) adsorption from wastewater. The results indicated that CoFe 2 O 4 and Co x Fe y nanoparticles existed in the pores of AC. The magnetic properties of CoFe 2 O 4 /Co x Fe y /AC indicated it could be separated and retrieved easily using an external magnet after Cd(II) adsorption. The effects of solution pH, temperature and initial Cd(II) concentration on the Cd(II) adsorption of AC and CoFe 2 O 4 /Co x Fe y /AC were investigated. The standard free energy, enthalpy change and entropy change were evaluated. The kinetic parameters of Langmuir and Freundlich isothermal equation were analyzed, and the Freundlich kinetic model was feasible for describing the Cd(II) adsorption process of CoFe 2 O 4 /Co x Fe y /AC composites.