The biodegradation of anionic synthetic detergents is studied by means of a new laboratory test. The bacterial source used in this test is activated sludge from the Sewage Works at Amsterdam. Important differences in biological 舠softness舡 were found between various detergents with this test, which gives results similar to those found in pilot plant experiments.
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Borstlap et al. (1963) studied this question.
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