bioaccumulation in Lumbriculus variegatus Inna Nybom - - PowerPoint PPT Presentation

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bioaccumulation in Lumbriculus variegatus Inna Nybom - - PowerPoint PPT Presentation

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NORDROCS 2012 September 18 21, Oslo Effects of carbon amendments on ecological responses and PCB bioaccumulation in Lumbriculus variegatus Inna Nybom inna.nybom@uef.fi University of Eastern Finland Department of Biology Joensuu campus

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Effects of carbon amendments on ecological responses and PCB bioaccumulation in Lumbriculus variegatus

NORDROCS 2012 September 18 – 21, Oslo

Inna Nybom

inna.nybom@uef.fi University of Eastern Finland Department of Biology Joensuu campus

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Contents

  • Background
  • Test setup
  • AC and Biochar
  • Site introduction
  • Results
  • Effects of AC
  • Effects pre-treatment on AC
  • Biochar
  • Conclusion
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Activated Carbon (AC)

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Activated Carbon (AC)

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Activated Carbon (AC)

Ghosh, U.; Luthy, R. G.; Cornelissen, G.; Werner, D.; Menzie, C. A. In-situ Sorbent Amendments: A New Direction in Contaminated Sediment Management. Environ. Sci. Technol. 2011, 45 (4), 1163- 1168.

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Direct effects of Activated carbon?

Nybom, I.; Werner, D.; Leppänen, M.T.; Siavalas, G.; Christanis, K.; Karapanagioti, H.; Kukkonen, J.V.K.; Akkanen, J. Responses of Lumbriculus variegatus to different activated carbon doses and particle sizes in two sediments. (submitted manuscript).

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Direct effects of Activated carbon?

Nybom, I.; Werner, D.; Leppänen, M.T.; Siavalas, G.; Christanis, K.; Karapanagioti, H.; Kukkonen, J.V.K.; Akkanen, J. Responses of Lumbriculus variegatus to different activated carbon doses and particle sizes in two sediments. (submitted manuscript).

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Direct effects of Activated carbon?

Nybom, I.; Werner, D.; Leppänen, M.T.; Siavalas, G.; Christanis, K.; Karapanagioti, H.; Kukkonen, J.V.K.; Akkanen, J. Responses of Lumbriculus variegatus to different activated carbon doses and particle sizes in two sediments. (submitted manuscript).

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Direct effects of Activated carbon?

  • Ecological responses of AC amendments

are contradictory

  • Gammarus pulex and Asellus aquaticus
  • Neanthes arenaceodentata

Kupryianchyk, D.; Reichman, E. P.; Rakowska, M. I.; Peeters, E. T. H. M.; Grotenhuis, J. T. C.; Koelmans, A. A. Ecotoxicological Effects of Activated Carbon Amendments on Macroinvertebrates in Nonpolluted and Polluted Sediments. Environ. Sci. Technol. 2011, 45 (19), 8567-8574. Janssen, E. M.-L..; Choi, Y.; Luthy, R. G. Assessment of Nontoxic, Secondary Effects of Sorbent Amendment to Sediments on the Deposit-Feeding Organism Neanthes arenaceodentata. Environ. Sci.

  • Technol. 2012, 46 (7), 4134-4141.
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Activated carbon and biochar

  • Activated Carbon
  • ø 63-200 µm (and 20-63 µm)
  • Coal based
  • Water treatment
  • SSA 900-1100 m2/g
  • Biochar
  • ø 20-63 µm
  • Spruce chips
  • SSA 210 m2/g
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PCB contaminated sediments

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PCB contaminated sediments

TOC: 4.4% 0.9% 4.4%

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Efficiency of AC to reduce PCB bioaccumulation

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Adverse effects of AC amendments

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Adverse effects of AC amendments

reduced bioaccumulation but adverse effects

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Activated carbon pre-treatment

Washing away the adverse effects?

Sediment S2, AC 20-63 µm

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Activated carbon pre-treatment

Washing away the adverse effects?

Sediment S2, AC 20-63 µm

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Comparison of AC and biochar

Sediment S2, AC/Biochar 20-63 µm

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Comparison of AC and biochar

low low

Sediment S2, AC/Biochar 20-63 µm

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Comparison of AC and biochar

Sediment S2, AC/Biochar 20-63 µm

low low high high

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Conclusions

  • Activated carbon
  • Effective in reducing bioaccumulation
  • May cause biological responses
  • Biochar
  • Lower biological effects
  • Not efficient in reducing bioavailability
  • Sediment quality plays a role both in

the biological effects and efficiency of carbon to reduce bioaccumulation

  • Site specific characterization is

important

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Thank you

Sebastian Abel Suvi Kärmeniemi David Werner George Siavalas Hrissi Karapanagioti Kimon Christanis Kimmo Mäenpää Matti T. Leppänen Jussi V.K. Kukkonen Jarkko Akkanen Acknowledgments:

  • Maj and Tor Nessling foundation
  • Maa- ja vesitekniikan tuki ry
  • EnSTe