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Enzymatic degradation of oxalic acid for prevention of scaling

Nilvebrant, NO; Reimann, A; de Sousa, F; Cassland, Pierre LU ; Larsson, S; Hong, Feng LU and Jönsson, LJ (2002) 8th International Conference on Biotechnology in the Pulp and Paper Industry In Progress in Biotechnology (Biotechnology in the Pulp and Paper Industry - 8th ICBPPI ) 21. p.231-238
Abstract
Formation of calcium oxalate incrusts, scaling, may cause severe problems in the pulp and paper industry. Enzymatic degradation of oxalic acid provides a novel approach to eliminate the problems with calcium oxalate precipitation. The performance of two oxalate-degrading enzymes, oxalate oxidase from barley and oxalate decarboxylase from Aspergillus, was tested in model experiments with respect to catalytic efficiency under different conditions, including pH, temperature and enzyme concentration. Oxalate decarboxylase was found to be more sensitive to temperature variations than oxalate oxidase, which was selected for further experiments. Authentic samples from pulp bleach plants were used to test the performance of oxalate oxidase. The... (More)
Formation of calcium oxalate incrusts, scaling, may cause severe problems in the pulp and paper industry. Enzymatic degradation of oxalic acid provides a novel approach to eliminate the problems with calcium oxalate precipitation. The performance of two oxalate-degrading enzymes, oxalate oxidase from barley and oxalate decarboxylase from Aspergillus, was tested in model experiments with respect to catalytic efficiency under different conditions, including pH, temperature and enzyme concentration. Oxalate decarboxylase was found to be more sensitive to temperature variations than oxalate oxidase, which was selected for further experiments. Authentic samples from pulp bleach plants were used to test the performance of oxalate oxidase. The results showed that oxalic acid could be degraded enzymatically also in the industrial bleaching filtrates, which were obtained from D-, E-, O-, OP-, PO-, Q-, QP-, and Z-stages. The bleaching filtrates contained compounds that inhibited the action of oxalate oxidase. The degree of inhibition was strongly dependent on the filtrate and could be alleviated by dilution. (Less)
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author
organization
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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Progress in Biotechnology (Biotechnology in the Pulp and Paper Industry - 8th ICBPPI )
volume
21
pages
231 - 238
publisher
Elsevier
conference name
8th International Conference on Biotechnology in the Pulp and Paper Industry
external identifiers
  • wos:000178572100024
  • scopus:0037618698
ISSN
0921-0423
DOI
10.1016/S0921-0423(02)80025-9
language
English
LU publication?
yes
id
c11aaafa-5a58-4314-99a4-fb615e5ab385 (old id 1407209)
date added to LUP
2009-06-03 09:48:15
date last changed
2017-09-03 04:43:56
@inproceedings{c11aaafa-5a58-4314-99a4-fb615e5ab385,
  abstract     = {Formation of calcium oxalate incrusts, scaling, may cause severe problems in the pulp and paper industry. Enzymatic degradation of oxalic acid provides a novel approach to eliminate the problems with calcium oxalate precipitation. The performance of two oxalate-degrading enzymes, oxalate oxidase from barley and oxalate decarboxylase from Aspergillus, was tested in model experiments with respect to catalytic efficiency under different conditions, including pH, temperature and enzyme concentration. Oxalate decarboxylase was found to be more sensitive to temperature variations than oxalate oxidase, which was selected for further experiments. Authentic samples from pulp bleach plants were used to test the performance of oxalate oxidase. The results showed that oxalic acid could be degraded enzymatically also in the industrial bleaching filtrates, which were obtained from D-, E-, O-, OP-, PO-, Q-, QP-, and Z-stages. The bleaching filtrates contained compounds that inhibited the action of oxalate oxidase. The degree of inhibition was strongly dependent on the filtrate and could be alleviated by dilution.},
  author       = {Nilvebrant, NO and Reimann, A and de Sousa, F and Cassland, Pierre and Larsson, S and Hong, Feng and Jönsson, LJ},
  booktitle    = {Progress in Biotechnology (Biotechnology in the Pulp and Paper Industry - 8th ICBPPI )},
  issn         = {0921-0423},
  language     = {eng},
  pages        = {231--238},
  publisher    = {Elsevier},
  title        = {Enzymatic degradation of oxalic acid for prevention of scaling},
  url          = {http://dx.doi.org/10.1016/S0921-0423(02)80025-9},
  volume       = {21},
  year         = {2002},
}