Efficient and sustainable removal of linear alkylbenzene sulfonate in a membrane biofilm: Oxygen supply dosage impacts mineralization pathway.

ABSTRACT: Linear alkylbenzene sulfonate (LAS) can be thoroughly mineralized within sufficient oxygen (O₂), but which is energy intensive and may causes serious foaming problem. Although cometabolism can achieve efficient LAS removal within a wide range of O₂ dosages, how O₂ dosage systematically affects LAS metabolic pathway is still unclear. Here, membrane aerated biofilm reactor (MABR) enabled accurate O₂ delivery and bulk dissolved oxygen (DO) control. MABR achieved efficient removal of LAS (>96.4 %), nitrate (>97.8 %) and total nitrogen (>96.2 %) at the three target DO conditions. At high DO condition (0.6 mg/L), LAS was efficiently removed by aerobic mineralization (predominant) coupled with aerobic denitrification biodegradation with the related func

SUBMITTER: Wei T 

PROVIDER: S-EPMC11567133 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature