Characterisation and perspectives of energetic use of dissolved gas recovered from anaerobic effluent with membrane contactor.

Biogas is a source of renewable energy, and its production and use has been validated in anaerobic-based sewage treatment plants (STPs). However, in these systems, a large amount of methane is lost as dissolved methane (D-CH) in the liquid effluent. In this study, the characteristics and potential energetic uses of the gas recovered during the desorption of D-CH from anaerobic effluents with hollow fibre membrane contactors were investigated.

Simultaneous removal of dissolved sulphide and dissolved methane from anaerobic effluents with hollow fibre membrane contactors.

Dissolved gases in the effluent of anaerobic reactors, specifically dissolved methane (D-CH) and sulphide (S), are a drawback for anaerobic-based sewage treatment plants (STPs). This article studied the simultaneous desorption/removal of both gases from anaerobic effluents with hollow fibre membrane contactors (HFMCs), evaluating two types of membrane materials (e.g.

Mitigation of diffuse CH and HS emissions from the liquid phase of UASB-based sewage treatment plants: challenges, techniques, and perspectives.

Upflow anaerobic sludge blanket (UASB) reactors are considered to be a sustainable and well-established technology for sewage treatment in warm climate countries. However, gases dissolved in the effluent of these reactors, CH and HS in some instances, are a major drawback. These dissolved gases can be emitted into the atmosphere downstream of the anaerobic reactors, resulting in odour nuisance and, in the case of HS, corrosion, while in the case of CH, increasing greenhouse gas emissions with a significant loss of potentially recoverable energy.