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Effect of Humification Processes on Polyaromatic Hydrocarbons Concentration During Wastewater Treatment
Author(s) -
Sułkowski Wiesław W.,
Polak Justyna,
Miształ Iwona,
Miształ Jarosław,
Bartoszek Mariola,
Sułkowska Anna
Publication year - 2006
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.1002/j.1554-7531.2006.tb00318.x
Subject(s) - humus , chemistry , wastewater , aeration , humic acid , environmental chemistry , sewage treatment , organic matter , soil water , waste management , organic chemistry , environmental science , fertilizer , soil science , engineering
The aim of the present work was to compare the concentration changes of polyaromatic hydrocarbons (PAH) and the course of humification processes during wastewater treatment. Studies of samples from a biological‐mechanical wastewater treatment plant in Sosnowiec‐Zagórze (Poland) were carried out. Determination of PAH was performed both for wastewater sludge and sludge water. Observations of the course of humification processes for humic acid fractions isolated from sludges were conducted.
Analysis of PAH extracted from wastewaters and from sludge was performed by means of high‐performance liquid chromatography. Investigations of humification processes were conducted by electron paramagnetic resonance and nuclear magnetic resonance methods. The elementary composition changes in the structure of the extracted humic acids were determined.
It was found that polyaromatic hydrocarbons appear during the processes of humification. Their content in water decreased only after the process of sludge aeration; however, sludge water leaving the settlers was PAH‐enriched.