Abstract
Humic and fulvic acid components in coal slurry transport wastewater (pipeline and laboratory generated) were fractionated by XAD-8 adsorption chromatography. The wastewaters were dominated by fulvic acids with humic acid contributing <1% of the total DOC. Partial degradation of the fulvic and non-fulvic acid fractions were conducted using permanganate oxidation and derivatization with diazomethane. Methylated decomposition products were examined by GC-MS. Wyodak coal slurry preparations were dominated by both aromatic and aliphatic moieties as demonstrated by six distinct classes of decomposition products, while Black Mesa pipeline wastewater DOC appeared to be dominated by fulvic acids of an aliphatic character as suggested by the presence of a single decomposition product, oxalic acid.
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