Microbial degradation of chlorolignins

Sulfate pulping and conventional bleaching of spruce wood, which had been labeled with super(14)C in the lignin component, gave rise to super(14)C-labeled chlorolignins. High relative molecular mass fractions of both the chlorination (C) and alkali extraction (E) stages were obtained by ultrafiltrat...

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Bibliographic Details
Published in:Environmental science & technology 1985-11, Vol.19 (11), p.1086-1089
Main Authors: Eriksson, Karl Erik, Kolar, Marie Claude
Format: Article
Language:English
Subjects:
Applied sciences
Biological and medical sciences
Biological treatment of waters
Biotechnology
Environment and pollution
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Industrial wastewaters
Pollution
Wastewaters
Water treatment and pollution
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Summary:Sulfate pulping and conventional bleaching of spruce wood, which had been labeled with super(14)C in the lignin component, gave rise to super(14)C-labeled chlorolignins. High relative molecular mass fractions of both the chlorination (C) and alkali extraction (E) stages were obtained by ultrafiltration (cutoff at 1000 daltons). The degradation of these labeled chlorolignins was studied by measuring evolved super(14)CO sub(2) using two different bacterial mixtures, isolated from aerated lagoons receiving spent bleach liquors, and the white-rot fungus Sporotrichum pulverulentum). The results obtained showed that the bacterial consortia degraded high molecular mass chlorolignins only very slowly, less than 4% of the super(14)C material being converted super(14)CO sub(2) within 3 months. However, the fungus degraded the same material much more rapidly, 35-45% of available super(14)C being converted to super(14)CO sub(2) within 2 months.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00141a011