Demonstrating commercial hollow fibre membrane contactor performance at industrial scale for biogas upgrading at a sewage treatment works
| Autor: | Tony Rutherford, Adam Brookes, Daniel Herron, Peter Vale, Sam Houlker, Andrew Moore, Ewan J. McAdam, Marc Pidou |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
lcsh:Hydraulic engineering
Geography Planning and Development 02 engineering and technology Aquatic Science Biochemistry lcsh:Water supply for domestic and industrial purposes 020401 chemical engineering Biogas lcsh:TC1-978 biogas Deposition (phase transition) 0204 chemical engineering wastewater treatment works Water Science and Technology Contactor lcsh:TD201-500 membrane fouling carbon capture Membrane fouling Industrial gas Partial pressure prefiltration 021001 nanoscience & nanotechnology Pulp and paper industry Environmental science Sewage treatment 0210 nano-technology Syngas |
| Zdroj: | Water Volume 13 Issue 2 Water, Vol 13, Iss 172, p 172 (2021) |
| Popis: | Hollow fibre membrane contactor (HFMC) technology has been developed for CO2 absorption primarily using synthetic gas, which neglects the critical impact that trace contaminants might have on separation efficiency and robustness in industrial gases. This study, therefore, commissioned a demonstration-scale HFMC for CO2 separation at a full-scale anaerobic digester facility to evaluate membrane integrity over six months of operation on real biogas. The CO2 capture efficiency identified using real biogas was benchmarked at comparable conditions on synthetic gas of an equivalent partial pressure, and an equivalent performance identified. Two HFMC were subsequently compared, one with and one without a pre-treatment stage that targeted particulates, volatile organic compounds (VOCs) and humidity. Similar CO2 separation efficiency was again demonstrated, indicating limited impact within the timescale evaluated. However, gas phase pre-treatment is advised in order to ensure robustness in the long term. Over longer-term operation, a decline in CO2 separation efficiency was observed. Membrane autopsy identified shell-side deposition, where the structural morphology and confirmation of amide I and II groups, indicated biofouling. Separation efficiency was reinstated via chemical cleaning, which demonstrated that proactive maintenance could minimise process risk. |
| Databáze: | OpenAIRE |
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