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EC number: 946-382-0
CAS number: -
In a 3 h activated sludge respiration inhibition study conducted according to OECD guideline 209 and GLP, the EL50 and NOEL for microorganisms in activated sludge exposed to PEMP product were determined to be 780 mg/L and 100 mg/L, respectively. The study was reliable without restrictions.
In a 3 h activated sludge respiration
inhibition study conducted according to OECD guideline 209 and GLP,
microorganisms in activated sludge were exposed to PEMP product at
loading rates of 3.2, 10, 32, 100, 320 and 1000 mg/L.
No statistically significant inhibition of
the respiration rate of the sludge was recorded at or below a loading
rate of 100 mg PEMP product per litre, with mean inhibition values of
-6%, 3%, -6% and 0% at 3.2, 10, 32 and 100 mg/L. At higher loading rates
the inhibitory effect of PEMP product on aerobic waste water (activated
sludge) bacteria increased with increasing loading rate, ranging from an
average of 40% inhibition of the respiration rate at 320 mg/L to 51% at
1000 mg/L. The EL50 and NOEL were 780 mg/L and 100 mg/L, respectively.
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