Degradation of aniline in Weihe riverbed sediments under denitrification conditions.

Three groups of microcosm tests were conducted to study the possibility of aniline degradation and the effects of organic matter and hydrous metal oxides on the degradation in Weihe riverbed sediments under denitrification conditions. After the riverbed sediments (20 g) and groundwater (800 ml) were put into bottles, aniline, nitrate and other reagents were added, and then the bottles were flushed with N2 for 30 minutes to create microcosms. Samples from the microcosms were employed for the analysis of aniline, nitrate, and chemical oxygen demand (COD).