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Mar Pollut Bull ; 69(1-2): 28-37, 2013 Apr 15.
Article in English | MEDLINE | ID: mdl-23419752

ABSTRACT

Biologically treated wastewater (WW) from the Hammerfest LNG (liquefied natural gas) plant is discharged to the sea. A study using biomarkers in mussels and Atlantic cod was performed to examine whether this discharge meets a zero harmful emission requirement. Caging of mussels close to the outfall and exposure of mussels and fish to WW in the laboratory were conducted, and a suite of contaminant responsive markers was assessed in exposed animals. In mussels the markers included chemical contaminant levels, haemocyte lysosomal instability and nucleus integrity, cellular energy allocation, digestive gland and gonad histopathology and shell-opening behaviour. In fish, biliary PAH metabolites and gill histopathology biomarkers were measured. A consistent cause-effect relationship between WW treatments and markers measured in test animals was not found. The results therefore indicate that the WW emission is unlikely to represent a significant stress factor for the local marine environment under the conditions studied.


Subject(s)
Environmental Monitoring/methods , Wastewater/analysis , Water Pollutants, Chemical/metabolism , Animals , Biomarkers/metabolism , Gadus morhua/metabolism , Mytilus/metabolism , Natural Gas , Norway , Polycyclic Aromatic Hydrocarbons/analysis , Polycyclic Aromatic Hydrocarbons/metabolism , Risk Assessment , Water Pollutants, Chemical/analysis
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