Removal of oil from produced water by coalescence/filtration in a granular bed.

Oil production generates a significant amount of water byproduct known as produced water. Following primary gravity separation, produced water is normally disposed of by injection into the formation from which it came. However, high amounts of suspended solids or oil in the produced water may cause clogging of the injection formation.

[Specificity of immunofluorescent methods detecting malarial antibodies: comparative study in the screening of blood donations].

Unlabelled: In France, no case of transfusion-transmitted malaria has been reported since 1994, reflecting the efficiency of the blood donations screening. However, an insufficiently specific serological assay leads to an unjustified loss of red cell units.

Materials And Methods: A retrospective study included 55 sera previously disqualified for the presence of malarial antibodies.