Blar i Norsk institutt for vannforskning på emneord "kjemikalie"
Viser treff 1-7 av 7
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Biodegradation of Anco Green Novaplus Drilling Muds on Cuttings Deposited in Benthic Chambers
(NIVA-rapport;3475, Research report, 1996)Discharge of drilling fluids attached to bore hole cuttings may affect the benthic environment on the deposition sites in the North Sea. The effects may vary according to dose and properties of the base fluid and other ... -
Biodegradation of Esters and Olefins in Drilling Mud Deposited on Arctic soft-bottom communities in a low-temperature Mesocosm
(NIVA-rapport;3760, Research report, 1997)Discharge of chemicals from off-shore drilling operations represent a matter of concern for the oil industry and pollution control authorities world-wide. As the industry expands towards higher latitudes and greater depths, ... -
Biodegradation of Ultidril Base Fluid and Drilling Mud on Cuttings Deposited in Benthic Chambers
(NIVA-rapport;3321, Research report, 1995)Synthetic drilling fluids have replaced much of the mineral oil previously used in mud systems for offshore drilling operations The cmemicals are entered into the North Sea environment attached to bore hole cuttings, which ... -
"ESTHER" - et svenskt system for analyse og vurdering av kjemikaliers miljøfarlighet
(NIVA-rapport;2062, Research report, 1987)Basert på to utredninger fra Statens Naturvårdsverk, Sverige, er det gitt en kort innføring i og vurdering av det svenske "ESTHER" - opplegget for innledende og avansert miljøfarlighetsanalyse. Den innledende analyse består ... -
Flotasjonskjemikaliers virkning på resipienter
(NIVA-rapport;2488, Research report, 1990)Rapporten gir en oversikt over hvilke flotasjonskjemikalier som brukes ved norske bedrifter. Det gis typer og mengder totalt for hele oppredningsbransjen og for hver bedrift for seg. Forbrukstallene er for 1988. Kjemikaliene ... -
Test on Degradation of AQUAMUL BII Drill Mud on Cuttings under Simulated Seabed Conditions
(NIVA-rapport;3092, Research report, 1994)New, synthetic drilling fluids are exploited by the oil industry to replace mineral oil in muds for North Sea drilling operations. Aquamul BII, which is a modification of the previously tested Aquamul B, is a high purity ... -
Tests on degradation of a new drill mud type under natural conditions
(NIVA-rapport;2538, Research report, 1991)Petrofree and Base Oil cuttings from offshore drillings were degradation tested in seminatural sea bottom ecosystem. dltrofree is a mixture of fatty acid esters. After 93 days the reduction in ester was significant and ...