Air gap membrane distillation of aqueous alcohol solutions

Garcı́a-Payo, M.C.; Izquierdo-Gil, M.A.; Fernández‐Pineda, C.

doi:10.1016/s0376-7388(99)00326-9

Cited by 166 publications

(60 citation statements)

References 13 publications

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“…is not only supported by our experimental data but also reported in published AGMD literature [14,17,37]. However, the validity of the mathematical model should not be judged based on predicting the trend of the process but also on how closely it predicts the absolute experimental data.…”

Section: Model Validation At Different Operating Parameterssupporting

confidence: 86%

Modeling of air-gap membrane distillation process: A theoretical and experimental study

Alsaadi

Ghaffour

et al. 2013

Journal of Membrane Science

178

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Section: Model Validation At Different Operating Parameterssupporting

confidence: 86%

Modeling of air-gap membrane distillation process: A theoretical and experimental study

Alsaadi

Ghaffour

et al. 2013

Journal of Membrane Science

178

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“…In AGMD, the air gap is usually the controlling factor for the mass and heat transfers [30] because of its greater thermal and mass transfer resistances. In comparison with the thickness (40-250 µm) and conductivity of the membrane, the air gap is much thicker (general 2000-10,000 µm) [31,32] and has lower thermal conductivity.…”

Section: Configurations Of Membrane Distillationmentioning

confidence: 99%

“…While SGMD and VMD are the most energy intensive MD techniques, they are generally preferred to separate two mixed liquids having different boiling points to avoid further treatments linked to the contamination of another carrier liquid on the permeate side [1,19,22,30,213]. On the other hand for water purification, desalination and dewatering AGMD and DCMD are generally used since only water is evaporated from the bulk feed [115,[214][215][216][217][218][219][220].…”

Section: Advances On Membrane Fabrication For MDmentioning

confidence: 99%

Advances in Membrane Distillation for Water Desalination and Purification Applications

Camacho

Dumée

Zhang

et al. 2013

Water

624

342

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Membrane distillation is a process that utilizes differences in vapor pressure to permeate water through a macro-porous membrane and reject other non-volatile constituents present in the influent water. This review considers the fundamental heat and mass transfer processes in membrane distillation, recent advances in membrane technology, module configurations, and the applications and economics of membrane distillation, and identifies areas that may lead to technological improvements in membrane distillation as well as the application characteristics required for commercial deployment. Keywordsa function of temperature, vapor pressure, and of the gas molecular mass K 0 membrane characteristic defined by Equation (9) Kn Knudsen number K(T) a function of temperature and molecular weight of the gas l mean free path of the molecules l m distance between parallel spacer fibres (m) LEP Limit Entry Pressure (kPa) M molecular mass (g/mol) M w molecular weights of water (g/mol) M a molecular weights of air (g/mol) n number of CNTs per unit cross section in bucky-paper P pressure in the air gap (kPa) half time to reach the maximum intensity-laser flash technique (s) t proportion of conductive heat (balance due to evaporative heat) loss through the membrane T mean temperature in the pores (K)

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“…There are several types of distillation processes depending on the mode of operation including air gap membrane distillation [17], vacuum membrane distillation [18], and direct contact membrane distillation (DCMD) [19], In DCMD, water vapor is transported by the partial pressure difference across the membrane from feed side to the permeate side and condenses in the permeate side [19]. DCMD is attracting much attention due to the simple operation and cost-effective equipment [20].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Simulated Coalbed Methane Produced Water Using Direct Contact Membrane Distillation

Cho

Song

Yoon

et al. 2016

Water

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Expolitation of coalbed methane (CBM) involves production of a massive amount saline water that needs to be properly managed for environmental protection. In this study, direct contact membrane distillation (DCMD) was utilized for treatment of CBM-produced water to remove saline components in the water. Simulated CBM waters containing varying concentrations of NaCl (1, 20, and 500 mM) and NaHCO 3 (1 and 25 mM) were used as feed solutions under two transmembrane temperatures (∆40 and 60˝C). In short-term distillation (~360 min), DCMD systems showed good performance with nearly 100% removal of salts for all solutes concentrations at both temperatures. The permeate flux increased with the feed temperature, but at a given temperature, it remained fairly stable throughout the whole operation. A gradual decline in permeate flux was observed at ∆60˝C at high NaHCO 3 concentration (25 mM). In long-term distillation (5400 min), the presence of 25 mM NaHCO 3 further decreased the flux to 25%-35% of the initial value toward the end of the operation, likely due to membrane fouling by deposition of Ca-carbonate minerals on the pore openings. Furthermore, pore wetting by the scalants occurred at the end of the experiment, and it increased the distillate conducitivity to 110 µS¨cm´1. The precipitates formed on the surface were dominantly CaCO 3 crystals, identified as aragonite.

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Air gap membrane distillation of aqueous alcohol solutions

Cited by 166 publications

References 13 publications

Modeling of air-gap membrane distillation process: A theoretical and experimental study

Modeling of air-gap membrane distillation process: A theoretical and experimental study

Advances in Membrane Distillation for Water Desalination and Purification Applications

Treatment of Simulated Coalbed Methane Produced Water Using Direct Contact Membrane Distillation

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