The following is a survey of some recently reported magnetic
nano-sorbents with their applications for removal of heavy metals.
A natural biodegradable and renewable resin with abundant
hydroxyl and carboxylic groups was used as a coating layer on the
surface of iron oxide magnetic nano-material and reported as a
newly synthesized effective adsorbent for cadmium removal from
aqueous solution [6]. Adsorption of arsenate on iron(III) oxidecoated-
ethylenediamine and functionalized multi-wall carbon
nano-tubes was recently reported [7]. The sorptive removal of
arsenic from water by magnetic Fe-hydrotalcite (MFeHT) seeding
by nano-magnetite was investigated [8]. Magnetic binary oxides
(MBOP) were synthesized by using chitosan template and
investigated for the uptake of arsenic(III) [9]. A magnetic
composite nano-material was synthesized from pectin-iron oxide
adsorbent and used for removal of copper(II) [10]. Magnetite nanoparticles
synthesized through the co-precipitation method with