Recovery of dilute aqueous butanol by membrane vapor extraction with dodecane or mesitylene

Chen, J.; Razdan, Neil K.; Field, Tyler; Liu, D.E.; Wolski, Paul W.; Cao, Xuejun; Prausnitz, John M.; Radke, Clayton J.

doi:10.1016/j.memsci.2017.01.018

Cited by 23 publications

(17 citation statements)

References 21 publications

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“…Mass transfer of water vapor across porous media regulates the behavior of numerous natural and applied systems including soils [1][2] , transpiration [2][3] , crushed ores, food processing 4 , leaks and cracks in construction [5][6][7] , electronic packaging 6 , membrane extractions of water vapor 8 and other chemicals 9 , and micro-and nano-fluidics [10][11][12][13][14][15][16][17] . Of those systems, we are interested in extracting desalted water from the oceans through membrane distillation (MD), wherein water vapor from hot salty streams is transferred through porous hydrophobic membranes to condense on the other side 9,[18][19][20][21] . If the other side comprises a stream of cold deionized water, the process is known as the direct contact membrane distillation (DCMD; Figure 1); or if the other side comprises air at low pressure, the process is known as the air gap MD 22 .…”

Section: Introductionmentioning

confidence: 99%

Evaluating the potential of superhydrophobic nanoporous alumina membranes for direct contact membrane distillation

Subramanian

Qamar

Alsaadi

et al. 2019

Journal of Colloid and Interface Science

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The average vapor fluxes, J, across three sets of AAO membranes with average nanochannel diameters (and porosities) centered at 80 nm (32%), 100 nm (37%), and 160 nm (57%) varied by < 25%, while we had expected them to scale with the porosities. Our multiscale simulations unveiled how the high thermal conductivity of the AAO membranes reduced the effective temperature drive for the mass transfer. Our results highlight the limitations of AAO membranes for DCMD and might advance the rational development of desalination membranes.

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Section: Introductionmentioning

confidence: 99%

Evaluating the potential of superhydrophobic nanoporous alumina membranes for direct contact membrane distillation

Subramanian

Qamar

Alsaadi

et al. 2019

Journal of Colloid and Interface Science

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“…Scenario 3 combines the vacuum fermentation with an absorption task, using a liquid with a high affinity for 2‐butanol and low affinity for water and CO 2 . Although suitable solvents exist for 1‐butanol extraction , absorption studies are scarce , and 2‐butanol extraction/absorption has been overlooked so far. Fortunately, when no experimental data are available, suitable solvents can be evaluated based on predictive group contribution methods .…”

Section: Methodsmentioning

confidence: 99%

Prospects and challenges for the recovery of 2‐butanol produced by vacuum fermentation – a techno‐economic analysis

Pereira

Lopez-Gomez

Reyes

et al. 2017

Biotechnology Journal

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The conceptual design of a bio-based process for 2-butanol production is presented for the first time. Considering a hypothetical efficient producing strain, a vacuum fermentation is proposed to alleviate product toxicity, but the main challenge is the energy-efficient product recovery from the vapor. Three downstream scenarios were examined for this purpose: 1) multi-stage vapor recompression; 2) temperature swing adsorption; and 3) vapor absorption. The processes were simulated using Aspen Plus, considering a production capacity of 101 kton/yr. Process optimization was performed targeting the minimum selling price of 2-butanol. The feasibility of the different configurations was analyzed based on the global energy requirements and capital expenditure. The use of integrated adsorption and absorption minimized the energy duty required for azeotrope purification, which represents 11% of the total operational expenditure in Scenario 1. The minimum selling price of 2-butanol as commodity chemical was estimated as 1.05 $/kg, 1.21 $/kg, and 1.03 $/kg regarding the fermentation integrated with downstream scenarios 1), 2), and 3), respectively. Significant savings in 2-butanol production could be achieved in the suggested integrated configurations if more efficient microbial strains were engineered, and more selective adsorption and absorption materials were found for product recovery.

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“…In this context, direct contact membrane distillation (DCMD) process can utilize solar-thermal energy or waste industrial heat for water desalination 3,4 . DCMD exploits water-repellent membranes to separate counterflowing streams of hot seawater and cold deionized water, allowing only pure water vapor to transport across from the hot to cold side 5,6,7,8,9 . Commercial DCMD membranes almost exclusively exploit perfluorocarbons because of their water repellency, characterized by the intrinsic contact angle of water, θ o ≈ 110°1 0 .…”

Section: Introductionmentioning

confidence: 99%

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO<sub>2</sub>/Si/SiO<sub>2</sub> Wafers for Green Desalination

Das

Arunachalam

Ahmad

et al. 2020

JoVE

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Desalination through direct contact membrane distillation (DCMD) exploits water-repellent membranes to robustly separate counterflowing streams of hot and salty seawater from cold and pure water, thus allowing only pure water vapor to pass through. To achieve this feat, commercial DCMD membranes are derived from or coated with water-repellent perfluorocarbons such as polytetrafluoroethylene (PTFE) and polyvinylidene difluoride (PVDF). However, the use of perfluorocarbons is limiting due to their high cost, non-biodegradability, and vulnerability to harsh operational conditions. Unveiled here is a new class of membranes referred to as gas-entrapping membranes (GEMs) that can robustly entrap air upon immersion in water. GEMs achieve this function by their microstructure rather than their chemical make-up. This work demonstrates a proof-ofconcept for GEMs using intrinsically wetting SiO 2 /Si/SiO 2 wafers as the model system; the contact angle of water on SiO 2 is θ o ≈ 40°. Silica-GEMs had 300 μm-long cylindrical pores whose diameters at the (2 μm-long) inlet and outlet regions were significantly smaller; this geometrically discontinuous structure, with 90° turns at the inlets and outlets, is known as the "reentrant microtexture". The microfabrication protocol for silica-GEMs entails designing, photolithography, chrome sputtering, and isotropic and anisotropic etching. Despite the water loving nature of silica, water does not intrude silica-GEMs on submersion. In fact, they robustly entrap air underwater and keep it intact even after six weeks (>10 6 seconds).On the other hand, silica membranes with simple cylindrical pores spontaneously imbibe water (< 1 s). These findings highlight the potential of the GEMs architecture for separation processes. While the choice of SiO 2 /Si/SiO 2 wafers for GEMs is limited to demonstrating the proof-of-concept, it is expected that the protocols and concepts presented here will advance the rational design of scalable GEMs using inexpensive common materials for desalination and beyond.

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Recovery of dilute aqueous butanol by membrane vapor extraction with dodecane or mesitylene

Cited by 23 publications

References 21 publications

Evaluating the potential of superhydrophobic nanoporous alumina membranes for direct contact membrane distillation

Evaluating the potential of superhydrophobic nanoporous alumina membranes for direct contact membrane distillation

Prospects and challenges for the recovery of 2‐butanol produced by vacuum fermentation – a techno‐economic analysis

Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO<sub>2</sub>/Si/SiO<sub>2</sub> Wafers for Green Desalination

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