Removal and Transformation of Resin Acids during Secondary Treatment at a New Zealand Bleached Kraft Pulp and Paper Mill

1994 ◽  
Vol 29 (5-6) ◽  
pp. 105-121 ◽  
Author(s):  
J. A. Zender ◽  
T. R. Stuthridge ◽  
A. G. Langdon ◽  
A. L. Wilkins ◽  
K. L. Mackie ◽  
...  

Investigations were undertaken on a full scale lagoon treatment system receiving effluents from a bleached kraft pulp and paper mill which processed softwoods. The system was examined over four phases, including lagoons, aerobic transport channels and the recipient discharge point to determine the removal efficiency of resin acids during effluent treatment. The total treatment system removed 96% of the influent resin acids. The major compounds remaining after treatment were abietic acid, dehydroabietic acid, and a variety of hydrogenated resin acid transformation products. Each section of the treatment system differed in its ability to remove the major classes of resin acids. For example, the average removal rates for resin acids within the first phase lagoons and of the channel leaving the lagoons were 1.2 and 17 g.kg-1 VSS.day-1, respectively. A pathway for the biodegradation and biotransformation of influent resin acids is proposed on the basis of the observed changes in effluent composition through the treatment system.

1999 ◽  
Vol 40 (11-12) ◽  
pp. 273-280 ◽  
Author(s):  
William W. Mohn ◽  
Vincent J. J. Martin ◽  
Zhongtang Yu

A better understanding of the mechanisms and ecology of resin acid biodegradation will contribute to improved performance of existing treatment systems and development of new treatment systems for pulp and paper mill effluents. Using molecular genetic methods, we have partially elucidated the biochemical pathway for degradation of abietane resin acids by Pseudomonas abietaniphila BKME-9. We identified genes encoding putative membrane-associated proteins that are required for abietane metabolism. These proteins may function in cellular uptake of, or response to, resin acids. Genetic and physiological evidence suggests that a monooxygenase is involved in the biochemical pathway. A quantitative PCR assay was developed for ditA1, a gene from BKME-9 encoding resin acid degradation. In an aerated lagoon treating pulp mill effluent, a population carrying ditA1 was found, which was a small fraction (10−7) of the total microbial community. This population was evenly distributed throughout the system and was a stable member of the community over time. Quantitative PCR assays were used to monitor Pseudomonas abietaniphila BKME-9 and Zoogloea resiniphila DhA-35 when they were separately used to inoculate a complex microbial communities in laboratory sequencing batch reactors. Both inocula were stably maintained in the community for 24 days. These inocula stimulated resin acid removal by the community when it was stressed by high pH or by high resin acid loading.


1991 ◽  
Vol 24 (3-4) ◽  
pp. 309-317 ◽  
Author(s):  
T. R. Stuthridge ◽  
D. N. Campin ◽  
A. G. Langdon ◽  
K. L. Mackie ◽  
P. N. McFarlane ◽  
...  

The effectiveness of the two biological treatment systems operating at a New Zealand bleached kraft softwood integrated pulp and paper mill was assessed. The two systems operate in different configurations. Treatment system A, which receives general mill wastewaters and chlorination stage bleaching discharges utilises deep, aerated lagoons and has a 4.5 day retention time. Treatment system B, which receives alkali extraction bleaching wastewaters and foul condensates, uses a lagoon system with a retention time of 45 days. Detailed chemical analyses of the untreated and treated wastewaters were made. Mass balances were calculated for a range of physical parameters and for specific chlorinated and non-chlorinated organic constituents. Significant differences in the treatability of various constituents were found. In particular, while system A was able to reduce levels of AOX by 65%, no significant reduction in AOX occurred in system B. In contrast, system B reduced levels of chloroacetic acids by 84% while system A did not achieve any statistically significant removal of these compounds. The treatability of chlorophenolic compounds also differed. System A was unable to remove chlorophenols and chloroguaiacols while system B did not reduce levels of chlorocatechols. These results confirm that the treatability of bleached kraft pulp and paper mill wastewater constituents is dependent upon the characteristics of the treatment systems and the compositions of the wastewaters.


1977 ◽  
Vol 34 (6) ◽  
pp. 838-843 ◽  
Author(s):  
B. Brownlee ◽  
M. E. Fox ◽  
W. M. J. Strachan ◽  
S. R. Joshi

Sediments adjacent to a kraft pulp and paper mill on western Nipigon Bay, Lake Superior, were examined for resin acids. Dehydroabietic acid was the predominant resin acid with surficial concentrations of less than 5–100 μg/g.The areal distribution indicated the mill to be the primary source of this compound. Depth profiles of the acid and core dating by 210Pb methods enabled the calculation of a mean sediment accumulation rate of 0.11 cm∙yr−1 and a half-life for the disappearance of dehydroabietic acid in the sediments of approximately 21 yr. A half-life of 0.12 yr was estimated for this compound in the water column. It appears, therefore, that the primary removal mechanism of dehydroabietic acid is degradation in the water column.


1997 ◽  
Vol 43 (7) ◽  
pp. 599-611 ◽  
Author(s):  
Steven N. Liss ◽  
Paul A. Bicho ◽  
John N. Saddler

Resin acids, a group of diterpenoid carboxylic acids present mainly in softwood species, are present in many pulp mill effluents and toxic to fish in recipient waters. They are considered to be readily biodegradable. However, their removal across biological treatment systems has been shown to vary. Recent studies indicate that natural resin acids and transformation products may accumulate in sediments and pose acute and chronic toxicity to fish. Several resin acid biotransformation compounds have also been shown to bioaccumulate and to be more resistant to biodegradation than the original material. Until recently, the microbiology of resin-acid degradation has received only scant attention. Although wood-inhabiting fungi have been shown to decrease the level of resin present in wood, there is no conclusive evidence that fungi can completely degrade these compounds. In contrast, a number of bacterial isolates have recently been described which are able to utilize dehydroabietic or isopimaric acids as their sole carbon source. There appears to be an unusually high degree of substrate specificity with respect to the utilization of abietane congeners and the presence of substituents. Pimaranes do not appear to be attacked to the same extent as the abietanes. This paper reviews the occurrence, chemistry, toxicity, and biodegradation of resin acids in relation to the biological treatment of pulp and paper mill effluents.Key words: resin acids, biodegradation, pulp mill effluents.


1989 ◽  
Vol 42 (6) ◽  
pp. 983 ◽  
Author(s):  
AL Wilkins ◽  
AG Langdon ◽  
GN Mills ◽  
SS Panadam ◽  
TR Stuthridge

A new hydroxylated resin acid from the biologically treated effluents of a New Zealand pulp and paper mill has been identified as 13 β-hydroxyabietan-18-oic acid. This hydroxy acid appears to be an anaerobic degradation product of abietic acid.


2006 ◽  
Vol 25 (9) ◽  
pp. 2322 ◽  
Author(s):  
Andrew M. Belknap ◽  
Keith R. Solomon ◽  
Deborah L. MacLatchy ◽  
Monique G. Dubé ◽  
L. Mark Hewitt

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