The techno-economic case for coupling advanced spacers to high-permeance RO membranes for desalination

Toh, K.Y.; Liang, Yanyan; Lau, Woei Jye; Weihs, G.A. Fimbres

doi:10.1016/j.desal.2020.114534

Cited by 24 publications

(12 citation statements)

References 64 publications

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“…Despite previous studies having evaluated the economic impacts [ 144 , 145 , 146 ] or total cost [ 147 ] of large-scale desalination systems, only a handful of studies have evaluated the impact of spacer design on total cost [ 148 ]. A recent techno-economic study by Toh et al [ 149 ] found that improving spacer design is more crucial than increasing permeance at same recovery, especially for SWRO systems. In addition, the sensitivity analysis in that study reveals that the cost reduction associated with using advanced spacers for high-permeance membranes is independent of economic assumptions (e.g., amortisation factor and membrane cost).…”

Section: Module Performance Metricsmentioning

confidence: 99%

A Review of CFD Modelling and Performance Metrics for Osmotic Membrane Processes

et al. 2020

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Simulation via Computational Fluid Dynamics (CFD) offers a convenient way for visualising hydrodynamics and mass transport in spacer-filled membrane channels, facilitating further developments in spiral wound membrane (SWM) modules for desalination processes. This paper provides a review on the use of CFD modelling for the development of novel spacers used in the SWM modules for three types of osmotic membrane processes: reverse osmosis (RO), forward osmosis (FO) and pressure retarded osmosis (PRO). Currently, the modelling of mass transfer and fouling for complex spacer geometries is still limited. Compared with RO, CFD modelling for PRO is very rare owing to the relative infancy of this osmotically driven membrane process. Despite the rising popularity of multi-scale modelling of osmotic membrane processes, CFD can only be used for predicting process performance in the absence of fouling. This paper also reviews the most common metrics used for evaluating membrane module performance at the small and large scales.

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Section: Module Performance Metricsmentioning

confidence: 99%

A Review of CFD Modelling and Performance Metrics for Osmotic Membrane Processes

et al. 2020

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“…Generally, CSP is favorable for larger categories of power generation up to 600 MW. Figure 9 shows the UPC comparison between Toh et al [23] and the present work with different feed pressures. Increasing the pressure on the RO caused an increase in the UPC, and the results showed compatibility and convergence.…”

Section: Data Results Compared With Solar-orcmentioning

confidence: 82%

Techno-Economic Optimization of a Solar–Wind Hybrid System to Power a Large-Scale Reverse Osmosis Desalination Plant

2021

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Solar-wind hybrid systems have grown to become a pivotal option for powering membrane desalination processes, especially because they have zero harmful emissions. In this work, solar photovoltaic (PV) and horizontal wind turbine (HWT) systems were used to drive a reverse osmosis (RO) desalination process to produce large-capacity fresh water. Moreover, an investigation into a hybrid PV–HWT system combined with RO was also conducted. The proposed systems are compared technically and economically with the solar organic Rankine cycle (SORC) for RO. Technical and analytical optimization methods were performed to minimize the unit product cost (USD/m3). The results revealed that photovoltaic-powered RO is recommended over wind energy operations. However, for large capacities, both thermal and wind farms dominate.

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“…Recent technoeconomic study [ 146 ] found that enhancing feed‐side mixing through improved spacer design for SWM module is another important key factor to further reduce total processing cost. The technoeconomic results show good agreement with common trends for SEC, given that the major component of the total processing cost is the operating pressure cost.…”

Section: Strategies For Energy Reduction In Desalination Processesmentioning

confidence: 99%

Energy Efficient Seawater Desalination: Strategies and Opportunities

2021

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With the change in climate patterns, rapid industrialization, and population growth, the increasing water and energy demand became a major concern in the past decades. Desalination has been touted as the answer to the global water crisis, due to its capability in producing high‐quality fresh water from saline water. The continual research and innovations in the desalination field have resulted in the commercialization of large‐scale desalination in many water scarce regions. In the energetic context, all desalination processes are energy intensive. With the necessity to make desalination a more affordable and sustainable process, the energy efficiency of desalination is becoming an important topic. Herein, it is aimed to provide insights into the recent efforts and strategies established to tackle the energy‐related issues of both, thermal‐based and membrane‐based desalination processes. Depending on the principle of various commercial and emerging desalination processes, the directions of energy efficiency improvements, which include operating condition optimization, high‐performance material development, and renewable energy exploitation are discussed. The ideas and strategies reviewed herein, whether in their implementation or theoretical stage, are expected to provide insights into the possible improvement for application in commercial desalination plants.

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The techno-economic case for coupling advanced spacers to high-permeance RO membranes for desalination

Cited by 24 publications

References 64 publications

A Review of CFD Modelling and Performance Metrics for Osmotic Membrane Processes

A Review of CFD Modelling and Performance Metrics for Osmotic Membrane Processes

Techno-Economic Optimization of a Solar–Wind Hybrid System to Power a Large-Scale Reverse Osmosis Desalination Plant

Energy Efficient Seawater Desalination: Strategies and Opportunities

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