Cost savings by novel seawater reverse osmosis elements and design concepts

Molina, Verónica García; Busch, Markus; Sehn, Peter

doi:10.5004/dwt.2009.703

Cited by 26 publications

(4 citation statements)

References 2 publications

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“…They offer high salts rejection, lowenergy requirement and high-productivity up to 47.5 m 3 /d [157][158][159]. Hybrid RO membrane interstage design also called internally staged design is introduced in which different membranes are packed in same pressure vessel to get operational and maintenance advantages and 5% to 8% of capital costs savings as reported by the manufactures [160][161][162][163][164][165].…”

Section: Swro Processesmentioning

confidence: 99%

Energy-water-environment nexus underpinning future desalination sustainability

et al. 2017

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Energy-water-environment nexus is very important to attain COP21 goal, maintaining environment temperature increase below 2 o C, but unfortunately two third share of CO2 emission has already been used and the remaining will be exhausted by 2050. A number of technological developments in power and desalination sectors improved their efficiencies to save energy and carbon emission but still they are operating at 35% and 10% of their thermodynamic limits. Research in desalination processes contributing to fuel World population for their improved living standard and to reduce specific energy consumption and to protect environment. Recently developed highly efficient nature-inspired membranes (aquaporin & graphene) and trend in thermally driven cycle's hybridization could potentially lower then energy requirement for water purification. This paper presents a state of art review on energy, water and environment interconnection and future energy efficient desalination possibilities to save energy and protect environment.

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Section: Swro Processesmentioning

confidence: 99%

Energy-water-environment nexus underpinning future desalination sustainability

et al. 2017

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“…This system involves the use of low-flux membranes in the front and high-flux membranes in the rear elements [50,51]. This system allows a significant reduction in permeate costs by requiring fewer pressure vessels and fewer membranes [52,53]. Figure 5 illustrates the proposed scheme.…”

Section: Ro Optimization Modelingmentioning

confidence: 99%

A Comparative Analysis of Statistical Models and Mathematics in Reverse Osmosis Evaluation Processes as a Search Path to Achieve Better Efficiency

Villena-Martínez

Alvizuri-Tintaya

Lora-García

et al. 2022

Water

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An effective alternative for water purification is reverse osmosis (RO). Laboratory-scale RO modeling is widely applied worldwide, and allows the evaluation of the behavior of the system to find the most convenient operating variables to be applied in future industrial scale-ups. Statistical models provide a wide range of information that allows a statistical prediction of the operation of the plant, and allows us to obtain efficiency indices in its development; these are useful in the planning, operation and monitoring process in RO plants. The mathematical models describe the physical behavior of the membrane and allow the identification of optimal operating conditions, taking into account economic aspects, guaranteeing a greater implementation of RO technology in developing countries which have problems with water contaminated with toxic heavy metals. The present work shows a review of different statistical and mathematical models, and the suitability of these in the analysis of RO in the separation of heavy metals in drinking water that can be applied in countries with serious environmental problems. Bolivia and several river basins, such as the Guadalquivir and Milluni, present this type of problem. A comparative method is proposed to establish the advantages and selection criteria to apply the different models in IO.

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“…ISD involves using lower flux membranes at the front and high flux membranes in subsequent elements (Figure 18) [102,103]. It has been shown that such a hybrid membrane inter-stage design has the potential for significant reductions in permeate costs by requiring fewer pressure vessels and membranes [104,105]. This section covers optimization of ISD and other such developments in RO membrane configurations using modelling and simulation over the last 5 years.…”

Section: Optimization Modelling In Romentioning

confidence: 99%

Mathematical and optimization modelling in desalination: State-of-the-art and future direction

et al. 2019

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The growing water demand across the world necessitates the need for new and improved processes as well as for a better understanding of existing processes. This level of understanding includes predicting system performance in scenarios that cannot always be evaluated experimentally. Mathematical modelling is a crucial component of designing new and improved engineering processes. Through mathematically modelling real life systems, we gain a deeper understanding of processes while being able to predict performance more effectively. Advances in computational capacity and the ease of assessing systems allow researchers to study the feasibility of various systems. Mathematical modelling studies enable optimization performance parameters while minimizing energy requirements and, as such, have been an active area of research in desalination. In this review, the most recent developments in mathematical and optimization modelling in desalination are discussed with respect to transport phenomena, energy consumption, fouling predictions, and the integration of multiple scaling evolution on heat transfer surfaces has been reviewed. Similarly, developments in optimization of novel reverse osmosis (RO) configurations have been analyzed from an energy consumption perspective. Transport models for membranebased desalination processes, including relatively less understood processes such as nanofiltration and forward osmosis are presented, with recent modifications to allow for different solutes and solutions. Mathematical modelling of hybrid systems integrated with RO has also been reviewed. A survey of the literature shows that mathematical and optimization modelling of desalination processes is an exciting area for researchers in which future scholarship includes coupling of renewable energy systems with desalination technologies, as well as more advanced descriptions of fouling evolution other than that of cake filtration in membrane-based processes.

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Cost savings by novel seawater reverse osmosis elements and design concepts

Cited by 26 publications

References 2 publications

Energy-water-environment nexus underpinning future desalination sustainability

Energy-water-environment nexus underpinning future desalination sustainability

A Comparative Analysis of Statistical Models and Mathematics in Reverse Osmosis Evaluation Processes as a Search Path to Achieve Better Efficiency

Mathematical and optimization modelling in desalination: State-of-the-art and future direction

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