Manufacturing method of spheres adsorbents of biomass from seaweed Sargassum sp. via Sol gel process suitable for the adsorption and capture of heavy metals present at low concentrations in large volumes of effluents of industrial lu00ecquidos

摘要

Manufacturing method of spheres adsorbents of biomass from seaweed Sargassum sp. via Sol gel process suitable for the adsorption and capture of heavy metals present at low concentrations in large volumes of effluents lu00ecquidos industrial. The present invention relates to a method for the manufacture of spheres adsorbents biomass of seaweed Sargassum sp., which is based on the known process of sol gel to immobilize microparticles ( 243 38 109 m) of the biomass of seaweed Sargassum sp. in the spherical format and pasting them with molecules of polyvinyl alcohol (PVA) and nanoparticles of bohemita ( 244 - A1 ~ 2 ~ ~ 3 ~.H ~ 2 ~), these nanoparticles obtained with the aid of a reaction processing sol gel at ambient temperature, in gaseous environment containing NH ~ 3 ~ and in an aqueous medium containing NH ~ 4 ~ oh.These spheres are obtained with good sphericity, mechanical strength higher than 2.3 kg / sphere, narrow diameter distribution, average diameter between 1 mm and 5 mm, with good chemical stability in means acidic, basic and neutral and with reasonable ( 242 18%) the ability to absorb water s. Taking a swelling destructive.These spheres are appropriate for the alternative treatment of large volumes of industrial liquid waste containing low concentrations of heavy metals, especially for CD, Cu and Zn, since they can be produced industrially at low cost and with removal efficiency of CD + Cu + Z. N more than 61%, and the removal efficiency of individual CD, Cu and Zn, respectively.More than 49%, 90% and 54%.