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ASPECTS SUR LES PROCESSUS DE BIODEGRADATION ET SUR LA
TOXICITE DE CERTAINS DECHETS PROVENUS DE L'INDUSTRIE DE
CELLULOSE ET DU PAPIER DANS LE MILIEU MARIN 


Maria Mirza 1), G. Camburu 2), Cezarina Dincu 1)
et Gabriela Topciu 1)
1) Institut Roumain de Recherches Marines Constanta
2) Institut National de Medicine Veterinaire "Pasteur" Bucharest

Abstract
Paper deals with the degradation in the eutrophised sea water, from 
wastes of the callulose and paper industry by action of physical
ambiental factors or cumulated with the action of isolated bacteria
from Black Sea. Sulphite liquor 5% (obtained by means of sulphite
procedure I) and ammonium lignosulphonate 2.5% (obtained by means of 
sulphate procedure II) degradated by action of ambiental physical
factor into stereilized sea water having and yield 86% (I) and 19% 
(II) into laboratory and halfnaturally conditions; into insterilized
sea water medium the yield was 95.71% (I) and 19% (II). Proteus 
vulgaris isolated from sea water didn't distroy (I) and (II) in
sterilized eutrophised sea water medium; also is setting a strong
synergism between Proteus and total germs from insterilized sea water
medium. In the latter case registered yield was 98.33% (I)respectively
48.68% (II). Acinetobacter calcoaceticus isolated from sea water
actioned with yields 96.53% (I) and 44% (II) into sterilized sea 
water medium; Acinetobacter shows an antagomism with all germs. The
addition in excess of Acinetobacter into insterilized sea water 
medium was determined a null effect upon biodegradation (I) and also
a diminution of biodegradation (II). The acute toxicity LC50 was for
sulphite liquor and ammonium lignosulphonate 8 g/l and respectively
5 g/l with the following exposure times: Idotea baltica/24 h;
Mytilus galloprovincialis (4.0-5.2 cm size)/144 h; Mytilaster 
spp/192h; Actinia aequina/192 h.