Abstract
Abstract Process waters and coal wastes from the physical cleaning of coals were collected at heavy media cyclone and water washing plants. The process wastewaters and leachates of the wastes were extracted and the organic compounds in these extracts were characterized by gas chromatography (GC) and combination gas chromotography/mass spectrometry (GC/ MS). Most of the identified compounds were aliphatic acids present at less than 1 mgL−1. Base/neutral compounds were present at less than 10μgL−1 in 22 different samples.
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