Chemical treatment of an anionic surfactant wastewater: electrospray-Ms studies of intermediates and effect on aerobic biodegradability

摘要

The effect of wet air oxidation on the aerobic biodegradability of a model wastewater containing 1000 mg L~-1 of linear alkylbenzene sulfonate (LAS) has been investigated. Semibatch oxidation experiments were performed at a temperature of 473 K, an oxygen partial pressure of 1.3 Mpa and residence times varying from 40 to 390 min, while continuous oxidation experi- ments were performed at a residence tie of 120 min.