Bleached kraft pulp mill discharged organic matter in recipient lake sediment - Environmental and molecular properties

EK Saski*, R Mikkola, JVK Kukkonen, M Salkinoja-Salonen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Environmental properties of organic matter contained halogen and sulfur were studied in sediments of bleached kraft pulp mill effluent (BKME) recipient lakes and 2 m(3) outdoor enclosures (mesocosms). The BKME contributed to 1% (v/v) of the total water flow in the lake downstream of the pulp mill where the sediments contained 1.7 to 4 mg of tetrahydrofuran extractable organic halogen (EOX-Cl) and 0.6 to 0.8 mg of tetrahydrofuran extractable organic sulfur (EOS-S) g(-1) of organic matter. Upstream sediment contained 0.03 mg of EOX-Cl and 0.7 mg of EOS-S g(-1) of organic matter. EOX was a better indicator for the influence of BKME in the recipient sediment than EOS. The polarity of BKME contained EOX corresponded to log K-ow of <1, and that of the downstream sediment contained EOX to > 4.5. HP-SEC analysis of the molecular weight distribution (MWD) of the EOX showed a peak between 300 to 600 g mol(-1) for the BKME and between 1000 to 2000 g mol(-1) for the downstream sediment. The MWD of the BKME contained EOS peaked at 300 to 1000 g mol(-1), and that of the downstream sediment contained EOS at 1000 to 5000 g mol(-1). These results indicate that BKME contained organic halogen and sulfur undergo major structural transformations when incorporated into sediment. The biota-to-sediment accumulation factor (BSAF) of EOX from sediments formed downstream of the mill and in the mesocosms to the lipids of Lumbriculus variegatus was 0.4 to 0.7. This is of a similar order of magnitude to the BSAF reported for 2,3,7,8-tetrachlorodibenzo-p-dioxin and 2,3,7,8-tetrachlorodibenzofuran.

Original languageEnglish
Pages (from-to)194-202
Number of pages9
JournalENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume4
Issue number4
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

Keywords

  • bioaccumulation
  • freshwater
  • organic halogen
  • organic sulfur
  • polarity
  • molecular weight
  • pulp mill effluent
  • recipient
  • sediment
  • DIBENZO-P-DIOXINS
  • CHLORINE COMPOUNDS
  • LEVEL ESTIMATION
  • SUM PARAMETERS
  • EFFLUENTS
  • WATER
  • IDENTIFICATION
  • HALOGENS
  • FINLAND
  • GULF

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