Abstract

QUINONES, Edgar; TEJADA, Candelaria; ARCIA, Cesar  and  RUIZ, Víctor. REMOVAL OF LEAD AND NICKEL IN AQUEOUS SOLUTIONS USING LIGNOCELLULOSIC BIOMASS: A REVIEW. rev.udcaactual.divulg.cient. [online]. 2013, vol.16, n.2, pp.479-489. ISSN 0123-4226.

The present review identifies bioadsorbents, extracted from residual biomass used in the removal of two highly toxic heavy metals in the environment: lead and nickel. The ability of removal was evaluated, highlighting those which showed removal, presenting the kinetics applied in these experiments. The bioadsorbente used include wood waste, nut shells, grain waste and citrus. It was found that for the removal of lead(II), the sugar cane bagasse with a removal capacity of 333mg/g and for nickel (II) acacia bark with a removal capacity of 294.1mg/g, stand out. These bioadsorbents are those reported with efficient removal ability. The kinetics of the adsorption process in most of the revised experiments is governed by the rate equation of pseudo-second order. A design of a pilot plant for removal of metal ions with biomasses with high adsorption capacity is recommended in order that these processes can be carried out in an industrial scale.

Keywords : Adsorption; bioadsorbent; metalion.

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