2011 - Europe Direct Iasi

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