Removal of resin acids and sterols from pulp mill effluents by activated sludge treatment

Water Research
A Kostamo, J V K Kukkonen

Abstract

The wastewater treatment plant of an elemental chlorine free bleaching kraft pulp mill located in eastern Finland was sampled in order to study the fate of wood extractives and the toxicity to luminescence bacteria (Vibrio fischeri) in different parts of the plant. Resin acids and sterols were analyzed from water, particles and sludge samples during three different runs. Waters before biotreatment and primary sludge were found to be toxic; but in the activated sludge treatment toxicity was removed. During wastewater treatment, concentrations of wood extractives were reduced over 97%. In activated sludge treatment, over 94% of the resin acids and over 41% of the sterols were degraded or transformed to other compounds. Furthermore, in general, less than 5% of the resin acids and over 31% of the sterols were removed in biosludge to the sludge thickener. Most of the extractives were discharged attached to particles. Although some disturbing factors increased the load of wood extractives during samplings, these factors did not affect the operational efficiency of the secondary treatment system.

References

Jan 1, 1997·Environmental Science and Pollution Research International·P Stahlschmidt-AllnerT Knacker

❮ Previous
Next ❯

Citations

May 12, 2005·Archives of Environmental Contamination and Toxicology·J O HonkanenJ V K Kukkonen
Jul 11, 2007·Chemical Society Reviews·Natalia Maximova, Olli Dahl
Nov 12, 2013·Journal of Environmental Management·Zahid Mahmood-Khan, Eric R Hall
May 24, 2012·TheScientificWorldJournal·Letícia FlohrWilliam Gerson Matias
Apr 18, 2008·Ecotoxicology and Environmental Safety·T L Korkea-ahoJ Taskinen
Jan 25, 2008·Journal of Bioscience and Bioengineering·Gladys VidalClaudia R Xavier
Oct 9, 2007·Journal of Hazardous Materials·T Leiviskä, J Rämö
Apr 7, 2007·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Inga Christianson-HeiskaBoris Isomaa
Jan 22, 2008·Toxicology in Vitro : an International Journal Published in Association with BIBRA·I Christianson-Heiska, B Isomaa
Apr 9, 2005·Ecotoxicology and Environmental Safety·Yasushi KamayaKyoji Suzuki
Nov 20, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Natalia A LuchnikovaIrina B Ivshina
Mar 23, 2021·Biotechnology and Applied Biochemistry·Owik Matthias Herold-MajumdarClaus Felby
Apr 13, 2021·Frontiers in Endocrinology·Ricardo O BarraKelly R Munkittrick
May 11, 2006·Environmental Science & Technology·Michael R van den HeuvelA Bruce McKague

❮ Previous
Next ❯

Related Concepts

Related Feeds

Bioremediation (ASM)

Bioremediation is the treatment and removal of harmful pollutants or contaminants through the use of microorganisms. Discover the latest research here.