2011 - Europe Direct Iasi
2011 - Europe Direct Iasi
2011 - Europe Direct Iasi
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EUROINVENT <strong>2011</strong><br />
CLASS 1.<br />
Environment - Pollution Control<br />
1.1.<br />
Title<br />
Different agro-industrial wastes as new materials with<br />
sorbtive properties from removal the textile dyes from<br />
industrial waste water<br />
Authors Daniela SUTEU, Carmen ZAHARIA<br />
Institution<br />
“Gh.Asachi” Technical University of <strong>Iasi</strong>, Faculty of<br />
Chemical Engineering and Environment Protection<br />
Patent no. OSIM ref no. 488/02.11.2010:<br />
The proposed paper presents new materials with high<br />
adsorptive properties prepared from different types of agroindustrial<br />
wastes, having predominant ligno-cellulose<br />
composition, proposed as sorbents into a primary<br />
Description<br />
technological step based on adsorption of a treatment process<br />
applied for some coloured industrial effluents. It is<br />
considered the adsorption as a basic technological step<br />
followed by separation of solid/liquid (S/L) phases by<br />
sedimentation and/or filtration, together with the treatment<br />
and previous valorisation of separated phases. The proposed<br />
materials are components of the category of agro-industrial<br />
wastes or by-products: lignin, cello-lignin, peat, sawdust, sun<br />
flower seed shells and corn cob. The tested coloured<br />
effluents were presented variable loads of textile dyes (Red<br />
Briliant HE-3B, Orange 16, Rodamine B, Methylene Blue,<br />
Crystal Violet) (i.e. 24 – 200 mg/L dye), and the treated<br />
effluent can be recycled or discharged in different receiving<br />
basins with respecting of maximum admissible limits from<br />
the specific environmental legislation. The efficiency of dyes<br />
removal from the tested industrial effluents after the<br />
technological step based on adsorption and separation of<br />
solid phase was variable between 42 - 99 % function of the<br />
tested ligno-cellulose material type, characteristics of the<br />
industrial effluent and operational conditions.<br />
Class 1<br />
35<br />
1