Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

Brunetti, Adele; Macedonio, Francesca; Barbieri, Giuseppe; Drioli, Enrico

doi:10.1186/s42480-019-0020-x

Cited by 17 publications

(5 citation statements)

References 35 publications

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“…A membrane condenser is a new unit operation recently introduced for recovering the water vapor contained in waste gaseous (aeriforms) streams (Brunetti et al, 2013;Brunetti et al, 2019;Brunetti et al, 2020). Thanks to the presence of microporous hydrophobic membranes and under a temperature difference between the feed stream and the membrane module, the water vapor contained in the aeriform feed stream can be condensed and recovered on the retentate side of the membrane module, whereas the partially dehydrated gases pass through the membrane in the permeate side.…”

Section: Integrated Membrane Plant As Sustainable Perspective For Biogas Valorizationmentioning

confidence: 99%

Membrane Engineering for Biogas Valorization

Brunetti

Barbieri

2021

Front. Chem. Eng.

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Membrane operations nowadays drive the innovative design of important separation, conversion, and upgrading processes, and contribute to realizing the main principles of “green process engineering” in various sectors. In this perspective, we propose the re-design of traditional plants for biogas upgrading and integrating and/or replacing conventional operations with innovative membrane units. Bio-digester gas streams contain valuable products such as biomethane, volatile organic compounds, and volatile fatty acids, whose recovery has important advantages for environment protection, energy saving, and waste valorization. Advanced membrane units can valorize biogas by separating its various components, and establishing environmentally friendly and small-scale energivorous novel separation processes enables researchers to pursue the requirements of circular economy.

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Section: Integrated Membrane Plant As Sustainable Perspective For Biogas Valorizationmentioning

confidence: 99%

Membrane Engineering for Biogas Valorization

Brunetti

Barbieri

2021

Front. Chem. Eng.

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“…A membrane condenser (MC) is another innovative process to capture water vapor from flue gas, illustrated in Figure 3 b. It was first proposed and developed by researchers at ITM-CNR in Italy [ 22 , 23 , 24 , 25 ] and was recently reviewed by Brunetti, Macedonio, Barbieri, and Drioli [ 26 ]. The key idea is to employ hydrophobic polymer membranes (pore size in the range of 0.1 and 0.2 μm) to initiate heterogeneous condensation of water vapors at the surface.…”

Section: Membrane-based Flue Gas Dehydration: Three Different Techmentioning

confidence: 99%

“…Researchers at ITM-CNR have extensively investigated different aspects of membrane condensers, including the effects of the temperature gradient, feed flow rate, relative humidity, membrane materials, and process configurations on water recovery and water quality [ 22 , 24 , 26 ].…”

Section: Membrane-based Flue Gas Dehydration: Three Different Techmentioning

confidence: 99%

“…The advantage of using a hydrophobic membrane is to prevent liquid water from penetrating through the pores and allowing it to simply roll down by gravity. Researchers at ITM-CNR have extensively investigated different aspects of membrane condensers, including the effects of the temperature gradient, feed flow rate, relative humidity, membrane materials, and process configurations on water recovery and water quality [22,24,26].…”

Section: Membrane-based Flue Gas Dehydration: Three Different Technologiesmentioning

confidence: 99%

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Transport Membrane Condenser Heat Exchangers to Break the Water-Energy Nexus—A Critical Review

Kim

Drioli

2020

Membranes

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Under the notion of water-energy nexus, the unsustainable use of water in power plants has been largely accepted in silence. Moreover, the evaporated water from power plants acts as a primary nucleation source of particulate matter (PM), rendering significant air pollution and adverse health issues. With the emergence of membrane-based dehydration processes such as vapor permeation membrane, membrane condenser, and transport membrane condenser, it is now possible to capture and recycle the evaporated water. Particularly, the concept of transport membrane condensers (TMCs), also known as membrane heat exchangers, has attracted a lot of attention among the membrane community. A TMC combines the advantages of heat exchangers and membranes, and it offers a unique tool to control the transfer of both mass and energy. In this review, recent progress on TMC technology was critically assessed. The effects of TMC process parameters and membrane properties on the dehydration efficiencies were analyzed. The peculiar concept of capillary condensation and its impact on TMC performance were also discussed. The main conclusion of this review was that TMC technology, although promising, will only be competitive when the recovered water quality is high and/or the recovered energy has some energetic value (water temperature above 50 ∘C).

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“…MC exploits the hydrophobic nature of the membrane to recover water from the flue gas. In MC, flue gas flow is sent into a hydrophobic membrane allows water vapour to pass through and condensed in the permeate side [ 25 ]. In MC, up to 60% of water moisture could be recovered.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Membrane Distillation and Wet Scrubber for Simultaneous Recovery of Heat and Water from Flue Gas

Yusoff

Nyunt

Bilad

et al. 2020

Entropy

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Flue gas contains high amount of low-grade heat and water vapor that are attractive for recovery. This study assesses performance of a hybrid of water scrubber and membrane distillation (MD) to recover both heat and water from a simulated flue gas. The former help to condense the water vapor to form a hot liquid flow which later used as the feed for the MD unit. The system simultaneously recovers water and heat through the MD permeate. Results show that the system performance is dictated by the MD performance since most heat and water can be recovered by the scrubber unit. The scrubber achieved nearly complete water and heat recovery because the flue gas flows were supersaturated with steam condensed in the water scrubber unit. The recovered water and heat in the scrubber contains in the hot liquid used as the feed for the MD unit. The MD performance is affected by both the temperature and the flow rate of the flue gas. The MD fluxes increases at higher flue gas temperatures and higher flow rates because of higher enthalpy of the flue gas inputs. The maximum obtained water and heat fluxes of 12 kg m−2 h−1 and 2505 kJm−2 h−1 respectively, obtained at flue gas temperature of 99 °C and at flow rate of 5.56 L min−1. The MD flux was also found stable over the testing period at this optimum condition. Further study on assessing a more realistic flue gas composition is required to capture complexity of the process, particularly to address the impacts of particulates and acid gases.

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Membrane condenser as emerging technology for water recovery and gas pre-treatment: current status and perspectives

Cited by 17 publications

References 35 publications

Membrane Engineering for Biogas Valorization

Membrane Engineering for Biogas Valorization

Transport Membrane Condenser Heat Exchangers to Break the Water-Energy Nexus—A Critical Review

Hybrid Membrane Distillation and Wet Scrubber for Simultaneous Recovery of Heat and Water from Flue Gas

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