Changes in the fluorescence intensity, degradability, and aromaticity of organic carbon in ammonium and phenanthrene-polluted aquatic ecosystems.

ABSTRACT: Mixed cultures were established by a sediment to investigate the changes in organic carbon (C) in a combined ammonium and phenanthrene biotransformation process in aquatic ecosystems. The microorganisms in the sediment demonstrated significant ammonium-N and phenanthrene biotransformation capacity with removal efficiencies of 99.96% and 99.99%, respectively. The changes in the organic C characteristics were evaluated by the fluorescence intensity, degradability (humification index (HIX) and UV absorbance at 254 nm (A ₂₅₄)), aromaticity (specific UV absorbance at 254 nm (SUVA₂₅₄) and fluorescence index (FI)). Compared with C2 (the second control), the lower values of fluorescence intensity (after the 15^th d), HIX (after the 8^th d), A

SUBMITTER: Qiao Z 

PROVIDER: S-EPMC8693519 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature