Flux patterns and membrane fouling propensity during desalination of seawater by forward osmosis

Li, Zhenyu; Yangali-Quintanilla, Victor; Linares, Rodrigo Valladares; Li, Qingyu; Zhan, Tong; Amy, Gary L.

doi:10.1016/j.watres.2011.10.051

Cited by 203 publications

(109 citation statements)

References 35 publications

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“…However, there is some scope of improvements in membrane processes due to improved membranes, higher efficiency pumps and energy recovery systems (including integrated systems) and pretreatment methods. New design configurations (interstaged membrane operations) [38] and use of forward osmosis [39] can also reduce energy consumption in SWRO. The use of 16-inch RO modules can also have an impact on cost (mainly lower footprint) despite designers of construction companies are still reluctant to use these mega-modules which were developed several years ago.…”

Section: Some Reasons For the Recent Increased Twc And The Impact Of mentioning

confidence: 99%

Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability

2013

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Desalination capacity has rapidly increased in the last decade because of the increase in water demand and a significant reduction in desalination cost as a result of significant technological advances, especially in the reverse osmosis process. The cost of desalinated seawater has fallen below US$0.50/m 3 for a large scale seawater reverse osmosis plant at a specific location and conditions while in other locations the cost is 50% higher (US$1.00/m 3 ) for a similar facility. In addition to capital and operating costs, other parameters such as local incentives or subsidies may also contribute to the large difference in desalted water cost between regions and facilities. Plant suppliers and consultants have their own cost calculation methodologies, but they are confidential and provide water costs with different accuracies.The few existing costing methodologies and software packages such as WTCost© and DEEP provide an estimated cost with different accuracies and their applications are limited to specific conditions. Most of the available cost estimation tools are of the black box type, which provide few details concerning the parameters and methodologies applied for local conditions. Many desalination plants built recently have greater desalinated water delivery costs caused by special circumstances, such as plant remediation or upgrades, local variation in energy costs, and site-specific issues in raw materials costs (e.g., tariffs and transportation). Therefore, the availability of a more transparent and unique methodology for estimating the cost will help in selecting an appropriate desalination technology suitable for specific locations with 2 consideration of all the parameters influencing the cost. A techno-economic evaluation and review of the costing aspects and the main parameters influencing the total water cost produced by different desalination technologies are herein presented in detail. Some recent developments, such as the increase of unit capacity, improvements in process design and materials, and the use of hybrid systems have contributed to cost reduction as well as reduction in energy consumption. The development of new and emerging low-energy desalination technologies, such as adsorption desalination, will have an impact on cost variation estimation in the future.

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Section: Some Reasons For the Recent Increased Twc And The Impact Of mentioning

confidence: 99%

Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability

2013

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“…PH can also play a role in the ionization and polymerization of silica; nevertheless at most natural pH levels (including that of the SW, around 8.5) silica is relatively unionized, lowering the risk of scaling [79].…”

Section: Particulate and Colloidal Fouling In MDmentioning

confidence: 99%

Scaling and fouling in membrane distillation for desalination applications: A review

et al. 2015

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“…Surface modification proved to greatly increase membrane surface hydrophilicity and reduce fouling propensity in FO membrane process. There are several methods for membrane surface modification depends on introduction of hydrophilic substances onto the surface of hydrophobic membranes such as: adsorption, surface coating [20][21][22]; chemical reactions induced by high energy substances (UV, plasma) or strong acids [23], [24] and surface grafting [25][26][27]. Recently, the most common commercially FO membrane is the asymmetric cellulose triacetate (CTA) membrane from Hydration Technology Innovations (HTI, Albany, OR).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of nonwoven cellulose triacetate forward-osmosis membranes by surface coating modification

Aly¹,

Gadallah²,

Ali³

et al. 2017

IJET

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Forward osmosis (FO) is considered as one of the emerging techniques in membrane technology. The enhancement of FO performance is governed by two major factors: the first one is development of high-performance draw solutions and the second is utilizing of high efficient FO membranes. The aim of this work is to investigate chemical surface coating modification of commercial nonwoven forward osmosis membrane with new hydrophilic coating materials namely, o-phenylene di-amine and benzoyl chloride. The effect of coating addition at different concentrations was studied. The membrane morphology and chemical structure characterization of modified membranes proved the formation of dense layer and higher membrane porosity. Finally, it was demonstrated that increasing of coating material concentration gradually increases porosity and membrane performance till 0.75 g/l. By further increasing of coating materials, the porosity and membrane performance tend to decrease.

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Flux patterns and membrane fouling propensity during desalination of seawater by forward osmosis

Cited by 203 publications

References 35 publications

Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability

Technical review and evaluation of the economics of water desalination: Current and future challenges for better water supply sustainability

Scaling and fouling in membrane distillation for desalination applications: A review

Enhancement of nonwoven cellulose triacetate forward-osmosis membranes by surface coating modification

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