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1

Investigations into the effect of 4-chloro-2-methylphenoxyacetic acid (MCPA) derivative on organic pollutants degradation kinetics and nitrification

100%
Grabinska-Sota E., Wisniowska E., Kalka J., Scieranka B.
Biotechnologia
|
2001
|
issue 3
208-218
EN
The paper presents the results of investigations into the effect of 4-chloro-2-methylphenoxyacetic acid (MCPA) derivative on organic pollutants biodegradation and nitrification. Conventional activated sludge process was used. MCPA derivative concentration was 40 mg(a.i.)?L-1. Control without pesticide addition was run concurrently. Sedimentation properties of sewage sludge were bed during process however COD was degraded to less than 22 mg?L-1- and 65 mg?L-1 for control tank and tank with MCPA derivative addition, respectively. Nitrification rates were 0,0372 ? 0,0139 [mgN/mgd.m.?d] and 0,0358 ? 0,0102 [mg N/mgd.m?d] for the control and investigated system, respectively. Pesticide addition inhibited nitrification and biodegradation process rate only at about 5-10%.
2

Transport model of pollutants in the Gulf of Gdansk

86%
Jedrasik J., Kowalewski M.
Oceanological Studies
|
1993
|
issue 64/3
61-75
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