LCA of herring a case study Nordic Network on LCA of Fish Roskilde 1819 November 2002

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LCA of herring - a case studyNordic Network on
LCA of FishRoskilde 18-19 November 2002

• Per Christensen
• Aalborg Universitet

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Steps in the herring case

• 1997 First assesment. Based on EDIP. Used
  Excell for calculations. 3 effect-categories
• 2000 Other assessment. Other fishproducts -
  mackerel and mussels. Based on EDIP but using
  SimaPro. All effect categories
• 2002 Second assessment on Herring. Plaice and
  cod.

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Functional unit

• Glass of pickled herring on 580 gr net weight
• Herring is 205 gr.
• Marinade is 354 ml.
• The rest is onions and spices

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Allocation

• Traditional technical and economical allo-cation
  is used (so far)
• Offal for production of fishmeal
• Cogeneration of heat and electricity
• System-expansion is used for some new cases in
  order to see how it works out

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The first LCA on herring
The environmental effects from the life cycle of
a glass of pickled herring when fishing with
trawl or seine
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Hot spots in the lifecycle

• Environmental regulation has focussed on the
  emission (of waste water) from fish processing
  industries
• Often vi find hot-spots other places in the
  lifecycle (fishing - energy usage - sugar) - also
  because water savings and cleaner technologies
  have been implemented in the industries

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Normalised effectpotentials when using seine
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Normalised effectpotentials when using trawl
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New hot spots in the lifecycle

• Anti-fouling paints are very important (TBT,
  copper). Underlines the importance of fishing
• Production (melting) of recycled glass (oil and
  benzene)

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Fuel consumption for species / species groups in
the Danish fishery in 2000
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Fuel consumption per kg caught fish for different
fishing gears in year 2000. Allocation is avoided
by system expansion
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Estimated consumption of anti fouling agents for
different species / species groups in the Danish
fishery in 2000
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Problems facing us !

• Environmental effects - toxicity - from chemicals
  hijacks the conclusions
• Avoiding allocation ?
• Many problems using databases and software. The
  validation is not good enough!