@article{ddd.uab.cat:174267,
      author = {Morillo Martín, Diego and Faccini, Mirko) and Amantia, David.)
               and Valiente Malmagro, Manuel and Pérez González, Gustavo and
               Aubouy, Laurent)},
       title = {Arsenate removal with 3-mercaptopropanoic acid-coated
               superparamagnetic iron oxide nanoparticles},
     journal = {Journal of Colloid and Interface Science},
        year = {2015},
      volume = {438},
       pages = {227--},
       month = {10},
    abstract = {In the present work, superparamagnetic iron oxide nanoparticles
               (SPION) surface-coated with 3-mercaptopropanoic acid (3-MPA) were
               prepared and their feasibility for the removal of arsenate from
               dilute aqueous solutions was demonstrated. The synthesized 3-MPA-
               coated SPION was characterized using transmission electron
               microscopy (TEM), thermogravimetric analysis (TGA) and Fourier
               transform infra-red spectrometry (FTIR). Separation efficiency of
               the coated nanoparticles and the equilibrium isotherm of arsenate
               adsorption were investigated. The obtained results reveal the
               arsenate adsorption to be highly pH-dependent, and the maximum
               adsorption was attained in less than 60 min. The resulting
               increase of 3-MPA-coated SPION adsorption capacity to twice the
               adsorption capacity of SPION alone under the same conditions is
               attributed to the increase of active adsorption sites. An
               adsorption reaction is proposed. On the other hand, efficient
               recovery of arsenate from the loaded nanoparticles was achieved
               using nitric acid (HNO3) solution, which also provides a
               concentration over the original arsenate solution},
         doi = {10.1016/j.jcis.2014.10.005},
         url = {https://ddd.uab.cat/record/174267},
}