Novel Landfill-Gas-to-Biomethane Route Using a Gas–Liquid Membrane Contactor for Decarbonation/Desulfurization and Selexol Absorption for Siloxane Removal DOI Open Access
Guilherme da Cunha, José Luiz de Medeiros, Ofélia de Queiroz Fernandes Araújo

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(8), P. 1667 - 1667

Published: Aug. 8, 2024

A new landfill-gas-to-biomethane process prescribing decarbonation/desulfurization via gas–liquid membrane contactors and siloxane absorption using Selexol are presented in this study. Firstly, an extension for HYSYS simulator was developed as a steady-state contactor model featuring: (a) hollow-fiber countercurrent/parallel contacts; (b) liquid/vapor mass/energy/momentum balances; (c) CO2/H2S/CH4/water fugacity-driven bidirectional transmembrane transfers; (d) temperature changes from heat/mass transfers, phase change, compressibility effects; (e) external heat transfer. Secondly, batteries countercurrent contact parallel were simulated selective landfill-gas with water. Several separation methods applied the process: water solvent battery adiabatic decarbonation/desulfurization; regeneration high-pressure strippers, reducing compression power CO2 exportation; Selexol. The results show that usual isothermal/isobaric simplification is unrealistic at industrial scales. converts water-saturated (CH4 = 55.7%mol, 40%mol, H2S 150 ppm-mol, Siloxanes 2.14 ppm-mol) to biomethane specifications of CH4MIN 85%mol, CO2MAX 3%mol, H2SMAX 10 mg/Nm3, SiloxanesMAX 0.03 mg/Nm3. This work demonstrates can be validated bench-scale literature data used industrial-scale same hydrodynamics. Once calibrated, becomes economically valuable since it can: (i) predict performance under scale-up/scale-down conditions; (ii) detect faults, leakages, wetting; (iii) troubleshooting.

Language: Английский

Integrating artificial intelligence modeling and membrane technologies for advanced wastewater treatment: Research progress and future perspectives DOI Creative Commons
Stefano Cairone, Shadi W. Hasan, Kwang‐Ho Choo

et al.

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 944, P. 173999 - 173999

Published: June 13, 2024

Membrane technologies have become proficient alternatives for advanced wastewater treatment, ensuring high contaminant removal and sustainable resource recovery. Despite significant progress, ongoing research efforts aim to further optimize treatment performance. Among the challenges faced, membrane fouling persists as a relevant obstacle in technologies, necessitating development of more effective mitigation strategies. Mathematical models, widely employed predicting performance, generally exhibit low accuracy suffer from uncertainties due complex variable nature wastewater. To overcome these limitations, numerous studies proposed artificial intelligence (AI) modeling accurately predict technologies' performance mechanisms. This approach aims provide simulations predictions, thereby enhancing process control, optimization, intensification. literature review explores recent advancements membrane-based processes through AI models. The analysis highlights enormous potential this field efficiency technologies. role defining optimal operating conditions, developing strategies mitigation, novel improving fabrication techniques is discussed. These enhanced optimization control driven by ensure improved effluent quality, optimized consumption, minimized costs. contribution cutting-edge paradigm shift toward examined. Finally, outlines future perspectives, emphasizing that require attention current limitations hindering integration plants.

Language: Английский

Citations

13

Machine learning framework for wastewater circular economy — Towards smarter nutrient recoveries DOI Creative Commons
Allan Soo, Li Gao, Ho Kyong Shon

et al.

Desalination, Journal Year: 2024, Volume and Issue: 592, P. 118092 - 118092

Published: Sept. 7, 2024

Language: Английский

Citations

5

A data-driven segmented model based on variance information for centrifugal pump efficiency prediction DOI
Zenan Sun, Shuihua Zheng, Weiwei Zhang

et al.

Engineering Applications of Artificial Intelligence, Journal Year: 2024, Volume and Issue: 136, P. 108992 - 108992

Published: July 19, 2024

Language: Английский

Citations

1

A temporal case-based reasoning approach for performance improvement in intelligent environmental decision support systems DOI Creative Commons
Josep Pascual Pañach, Miquel Sànchez‐Marrè, Miquel Àngel Cugueró Escofet

et al.

Engineering Applications of Artificial Intelligence, Journal Year: 2024, Volume and Issue: 136, P. 108833 - 108833

Published: June 27, 2024

Language: Английский

Citations

0

Novel Landfill-Gas-to-Biomethane Route Using a Gas–Liquid Membrane Contactor for Decarbonation/Desulfurization and Selexol Absorption for Siloxane Removal DOI Open Access
Guilherme da Cunha, José Luiz de Medeiros, Ofélia de Queiroz Fernandes Araújo

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(8), P. 1667 - 1667

Published: Aug. 8, 2024

A new landfill-gas-to-biomethane process prescribing decarbonation/desulfurization via gas–liquid membrane contactors and siloxane absorption using Selexol are presented in this study. Firstly, an extension for HYSYS simulator was developed as a steady-state contactor model featuring: (a) hollow-fiber countercurrent/parallel contacts; (b) liquid/vapor mass/energy/momentum balances; (c) CO2/H2S/CH4/water fugacity-driven bidirectional transmembrane transfers; (d) temperature changes from heat/mass transfers, phase change, compressibility effects; (e) external heat transfer. Secondly, batteries countercurrent contact parallel were simulated selective landfill-gas with water. Several separation methods applied the process: water solvent battery adiabatic decarbonation/desulfurization; regeneration high-pressure strippers, reducing compression power CO2 exportation; Selexol. The results show that usual isothermal/isobaric simplification is unrealistic at industrial scales. converts water-saturated (CH4 = 55.7%mol, 40%mol, H2S 150 ppm-mol, Siloxanes 2.14 ppm-mol) to biomethane specifications of CH4MIN 85%mol, CO2MAX 3%mol, H2SMAX 10 mg/Nm3, SiloxanesMAX 0.03 mg/Nm3. This work demonstrates can be validated bench-scale literature data used industrial-scale same hydrodynamics. Once calibrated, becomes economically valuable since it can: (i) predict performance under scale-up/scale-down conditions; (ii) detect faults, leakages, wetting; (iii) troubleshooting.

Language: Английский

Citations

0