Chemosphere, Год журнала: 2025, Номер 377, С. 144322 - 144322

Опубликована: Апрель 4, 2025

Photocatalysis has been previously identified as an effective pre-treatment for biodegrading naphthenic acid fraction compounds (NAFCs) in oil sands process-affected water (OSPW), achieving mineralization rates unattainable by standalone methods. However, previous studies focused on bacteria cultures biological treatment, overlooking the potential of algae-bacteria co-growth and its possible effects enhancing mineralization. Thus, this study replicated those experiments under conditions that promote algal growth. Synthetic OSPW underwent photocatalytic varying durations, followed treatment illuminated microcosms. Biostimulation, through phosphate addition, was also tested to determine effect accelerating Photocatalytic pre-treatments 24 h or longer created oligotrophic conditions, triggering production algal-derived organics, which released nutrients into reduced during phase. Moreover, nutrient addition generally exacerbated these promoting photosynthetic biomass Nutrient-fixing symbiotic microbes were identified, contributing prolonged organic phases. These phases persistent generation could pose a risk eutrophication, highlighting need mitigate light exposure post-biological treatments. Under controlled exposure, BPCs with treatments offer scalable, energy-efficient solution addressing complex industrial wastewater challenges, advancing sustainable management similar hard-to-treat sources.

Язык: Английский