Novel nanomaterials for water desalination technology

Cohen-Tanugi, David; Dave, Shreya H.; McGovern, Ronan Killian; Lienhard, John H.; Grossman, Jeffrey C.

doi:10.1109/sustech.2013.6617333

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…Cohen-Tanugi et al [66] assessed the benefits gained from ultra-permeable membranes for SWRO and BWRO. For SWRO, feed concentration was assumed as 42,000 ppm, recovery rate was 42%, and salt rejection of membrane was 99.8%.…”

Section: Water Permeabilitymentioning

confidence: 99%

“…When the cost of pressure vessels is taken into consideration, the decrease of total water production cost is 0.7-3.5%. Cohen-Tanugi et al [66] calculated the total number of pressure vessels needed for a 100,000 m 3 /d permeate as a function of membrane water permeability for single-stage SWRO with 42,000 ppm of feed salinity and single-stage BWRO with 2,000 ppm of feed salinity assuming fixed feed pump pressure. The results of calculation are shown in Fig.…”

Section: Costs Other Than Energy 321 Ro Membrane Performancementioning

confidence: 99%

“…References [66] and [68] showed large differences about how membrane area can be reduced by increasing membrane water permeability. In reference [66], the number of pressure vessels, which is proportional to membrane surface area, is approaching an asymptote at membrane water permeability over 5 LMH/bar for SWRO. In reference [68], the membrane surface area can be decreased even past 10 LMH/bar.…”

Section: Costs Other Than Energy 321 Ro Membrane Performancementioning

confidence: 99%

“…Fig. 14 Calculated required number of pressure vessels as a function of membrane water permeability for singlestage SWRO with 42,000 ppm feed, 42% recovery rate, 70 bar feed pump pressure and single-stage BWRO with 2,000 ppm feed, 65% recovery rate, and 12 bar feed pump pressure for total capacity of 100,000 m 3 /d, extracted from [66]. models of CAPEX.…”

Section: Ro Element Performance and Other Cost Driversmentioning

confidence: 99%

“…In 2014, Cohen-Tanugi et al [66] indicated that today's RO membrane water permeability is effectively "high enough" and approaching performance limits set by either external mass transfer rates or thermodynamic constraints fixed by the feed and permeate streams. Subsequently, in 2016, a review by Werber et al [67], highlighted the need for higher membrane selectivity.…”

Section: Introductionmentioning

confidence: 99%

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How RO membrane permeability and other performance factors affect process cost and energy use: A review

2019

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Reverse osmosis (RO) technology has progressed steadily over the last few decades. Those gains were achieved through improvements in both RO membrane element performance and energy recovery technologies. However, some recent literature indicates that RO membrane water permeability is approaching performance limits imposed by transport processes and thermodynamic constraints. This paper reviews how RO membrane element performance affects the cost of RO processes, especially the specific energy consumption. RO membrane performance encompasses water permeability, salt permeability, and other some characteristics of the RO element. This paper considers not only conventional RO processes, but also the recently proposed closed-circuit RO and batch RO processes. Even if the membrane water permeability increases, little additional effect is found when the membrane water permeability exceeds around 3 LMH/bar for seawater RO and 8 LMH/bar for brackish water RO in conventional single-stage RO. Increasing membrane water permeability has the potential to decrease membrane surface area and associated costs. A major limitation of most existing literature is that performance is evaluation on in terms of the initial operating conditions. Chronological changes, such as result from fouling, must also be considered to accurately validate how membrane element performance affects RO cost.

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Section: Water Permeabilitymentioning

confidence: 99%

Section: Costs Other Than Energy 321 Ro Membrane Performancementioning

confidence: 99%

Section: Costs Other Than Energy 321 Ro Membrane Performancementioning

confidence: 99%

Section: Ro Element Performance and Other Cost Driversmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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How RO membrane permeability and other performance factors affect process cost and energy use: A review

2019

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Synthetic Two‐Dimensional Materials: A New Paradigm of Membranes for Ultimate Separation

2016

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Microporous membranes act as selective barriers and play an important role in industrial gas separation and water purification. The permeability of such membranes is inversely proportional to their thickness. Synthetic two-dimensional materials (2DMs), with a thickness of one to a few atoms or monomer units are ideal candidates for developing separation membranes. Here, groundbreaking advances in the design, synthesis, processing, and application of 2DMs for gas and ion separations, as well as water desalination are presented. This report describes the syntheses, structures, and mechanical properties of 2DMs. The established methods for processing 2DMs into selective permeation membranes are also discussed and the separation mechanism and their performances addressed. Current challenges and emerging research directions, which need to be addressed for developing next-generation separation membranes, are summarized.

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