2012 - Europe Direct Iasi

X. 40.
Title
Authors
Institution
Description
EUROINVENT 2012
of the column and to ensure reasonable values of aqueous
solution flow rate. The main advantage of this procedure is that
after passing through the biosorbent mixture-packed column, the
aqueous waste stream has significant lower concentrations of
heavy metals and inorganic anions, which are also pollutant for
aquatic environment. The procedure described in this invention
included: (i) the methodology for preparation of biosorbent
mixture and column-packed equipment; (ii) study of the
influence of most important design parameters, such as flow rate
and initial pollutants concentration on the biosorption
performances of the column; (iii) optimal experimental
conditions required for the efficient and economic integrated
treatment of aqueous waste stream, (iv) implementation limits of
the biosorbent mixture-packed column. The procedure described
in this invention includes methodological details for each work
step and applicability limits.
Enhancing of biosorptive performances of algae biomass for
heavy metals by alkaline treatment
Laura Bulgariu 1 , Marius Lupea 1 , Dumitru Bulgariu 2,3 , Matei
Macoveanu 1
1
Gheorghe Asachi Technical Univeristy of Iasi, Faculty of of
Chemical Engineering and Environmental Protection
2
“Al.I.Cuza” University of Iasi, Faculty of Geography
3
Romanian Academy, Filial of Iasi, Collective of Geography
This invention relates to the description of alkaline treatment
procedure for enhancing of biosorptive performances of algae
biomass for heavy metals (Cd(II), Pb(II) and Co(II)) from
aqueous effluents. This treatment implied the mixing of algae
biomass with alkaline solution (0.2 mol/L NaOH) when an
increase of biosorption capacity with 23–26% for studied heavy
metals was obtained. The main advantage of this procedure is
that the enhancement of the biosorption capacity of algae
biomass is done without using additional expensive additives,
and thus the cost of the adsorbent preparation remains low.
The procedure described in this invention included: (i) the
methodology for preparation of alkaline treated algae biomass;
(ii) comparative study of the influence of some experimental
(initial heavy metals concentration and contact time) on the
biosorption capacity of algae biomass and alkaline treated algae
biomass; (iii) optimal experimental conditions required for the
efficient and economic removal of heavy metals by biosorption
on alkaline treated algae biomass; (iv) implementation limits of
the biosorption procedure. The main advantage of this procedure
Innovative Researches
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