2. ENVIRONMENTAL ChEMISTRy & TEChNOLOGy 2.1. Lectures

Chem. Listy, 102, s265–s1311 (2008) Environmental Chemistry & Technology
A
B
C
Fig. 2. Mophology of surface of the zinc ferrite sorbent, A – primary,
b – pasivated, C – biological and chemical regenerised
Conclusions
The presented results confirm the possibility of utilization
of the biological-chemical method as a new regeneration
method of desulphurization sorbents based on zinc ferrite.
The big advantage of this process in comparison with conventional
regeneration methods is the lowering of the temperature
of leaching from 500°C to 30°C. The period of the
duration of the regeneration seems to be an disadvantage, its
lowering requires the additional research aimed at the con-
s417
Table I
Comparison of the selected fysical and chemical charakteristic
of the zinc ferrite sorbents before and after biological and
chemical regeneration
Specific Surfaces
Average of
Sample surface SA factor f *
particles
[m2 g –1 ] d50 [μm]
primary
sorbent
pasivated
sorbent
regenerised
sorbent
2.6 1.022 4.77
2.8 1.478 9.10
6.2 1.797 2.19
tinual optimalization of conditions for biologico-chemical
regeneration.
This work was supported by the Slovak Research and
Development Agency under the contract No. APVV-51-
027705.
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