Bioremediation of oligotrophic waters by iron-humus-containing bio-immobilized materials: Performance and possible mechanisms

Water Research, Год журнала: 2024, Номер 268, С. 122713 - 122713

Опубликована: Окт. 30, 2024

Язык: Английский

Response of VFAs Produced by Kitchen Waste Fermentation to Intermittent pH Regulation and Enhanced Denitrification Efficiency

Water, Год журнала: 2025, Номер 17(8), С. 1157 - 1157

Опубликована: Апрель 13, 2025

To investigate the effects of intermittent pH regulation on volatile fatty acid (VFA) production during kitchen waste fermentation and its impact nitrogen removal efficiency in anaerobic/anoxic/oxic (A2O) process, five experimental groups were set up (pH = 3, 5, 7, 9, control). The study examined promotion soluble chemical oxygen demand (SCOD) VFA release under different conditions their contribution to total (TN) release. Additionally, methanol was used as a control carbon source explore enhancement denitrification when broth A2O process. results indicated that neutral alkaline could enhance SCOD conversion VFAs, with more pronounced effect conditions. maximum concentrations VFAs reached 36,412 5947 mg/L, respectively. Furthermore, TN most significant conditions, being 2.39 times group. When source, Proteobacteria Bacteroidota significantly enriched. relative abundance key functional genes (napA, norB, nosZ) involved cycling enzymes ([EC: 1.7.1.15], [EC: 1.7.2.1], 1.7.2.5]) enhanced, which strengthened performance.

Язык: Английский

Nano-Fe3O4/FeCO3 modified red soil-based biofilter for simultaneous removal of nitrate, phosphate and heavy metals: Optimization, microbial community and possible mechanism

Journal of Hazardous Materials, Год журнала: 2024, Номер 480, С. 136428 - 136428

Опубликована: Ноя. 7, 2024

Язык: Английский