Optimization of reverse osmosis networks with split partial second pass design

Du, Yawei; Xie, Lixin; Liu, Yan; Zhang, Shaofeng; Xu, Yongzhi

doi:10.1016/j.desal.2015.03.019

Cited by 42 publications

(36 citation statements)

References 24 publications

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“…With SPSP, the front permeate (lower TDS) bypasses the second-pass RO, while the rear permeate is fed into the second-pass, after which the two permeates are mixed. SPSP is reported to have the lowest SEC of the two pass configurations (Du et al, 2015).…”

Section: Ro Process Configurationsmentioning

confidence: 99%

“…Partial two pass RO ( Figure 1B) involves feeding a portion of the first pass permeate through the second RO, while the remaining permeate bypasses the RO, blending with the second pass permeate. The SEC is dependent on the ratio of permeate treated to permeate bypassed (Du et al, 2015).…”

Section: Ro Process Configurationsmentioning

confidence: 99%

“…Additional RO configurations involve passing RO concentrate through a second RO unit have been designed to achieve increased recovery and reduced concentrate volume, reducing plant size requirements. However, SEC is increased due to high pressure requirements of the second pass (Du et al, 2015).…”

Section: Ro Process Configurationsmentioning

confidence: 99%

See 2 more Smart Citations

Energy Recovery in SWRO Desalination: Current Status and New Possibilities

Schunke

Herrera

Padhye

et al. 2020

Front. Sustain. Cities

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Reverse osmosis (RO) technology requires high energy input in order to extract freshwater from seawater. Improvements in RO technology have led to seawater RO (SWRO) becoming the dominant form of large scale desalination around the world. However, the specific energy consumption (SEC) of SWRO remains substantially higher than that for surface water treatment and indirect potable recycling, making SWRO less cost effective than other alternatives for producing potable water. Furthermore, where non-renewable energy sources are used to supply SWRO energy demand, higher levels of greenhouse gas are emitted compared with lower energy alternatives. The purpose of this paper is to review the RO process configurations currently available and their impact on reducing SWRO energy consumption. This paper highlights the main factors contributing to SWRO energy consumption and presents some of the commonly adopted approaches to reducing SEC in SWRO plants. The use of energy recovery devices (ERDs) in SWRO is explored and the relative effectiveness of the various types of ERDs in reducing SEC presented.

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Section: Ro Process Configurationsmentioning

confidence: 99%

Section: Ro Process Configurationsmentioning

confidence: 99%

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Energy Recovery in SWRO Desalination: Current Status and New Possibilities

Schunke

Herrera

Padhye

et al. 2020

Front. Sustain. Cities

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show abstract

“…The authors commented that PSE methodology was useful in herb leaching processes, encouraging the modernization of traditional Chinese medicine production. In 2015, Du et al adopted superstructure-based MINLP optimization for optimal synthesis of reverse osmosis networks with split partial second pass design for seawater desalination [127]. In 2016, Yan et al proposed a superstructure representation of biomass to biomethane system through digestion and formed a multi-objective MINLP problem, which was solved using the nondominated sorting genetic algorithm (NSGA-II) [128].…”

Section: Since Late-1980s: Sargent's Ideas Integrated Into Developmenmentioning

confidence: 99%

Advances in Energy Systems Engineering and Process Systems Engineering in China—A Review Starting from Sargent’s Pioneering Work

Qian

Liu

2019

Processes

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Process systems engineering (PSE), after being proposed by Sargent and contemporary researchers, has been fast developing in various domains and research communities around the world in the last couple of decades, with energy systems engineering featuring a typical yet still fast propagating domain, and the Chinese PSE community featuring a typical community with its own unique challenges for applying PSE theory and methods. In this paper, development of energy systems engineering and process systems engineering in China is discussed, and Sargent's impacts on these two fields are the main focus. Pioneering work conducted by Sargent is firstly discussed. Then, a venation on how his work and thoughts have motivated later researchers and led to progressive advances is reviewed and analyzed. It shows that Sargent's idea of optimum design and his work on nonlinear programming and superstructure modelling have resulted in well-known methods that are widely adopted in energy systems engineering and PSE applications in tackling problems in China. Following Sargent's pioneering ideas and conceptual design of the PSE mansion, future development directions of energy systems engineering are also discussed.Processes 2019, 7, 350 2 of 22 and applications in solving local challenging problems of China, inspired by Sargent's work, are then summarized. Last, future directions of energy systems engineering are proposed, following the PSE framework set up by Sargent, and based on characteristics of energy systems which are unique from a generic process system. Contributions of Professor SargentOver his research career, Professor Sargent made tremendous contributions to the field of PSE. His work can be found in almost every discipline, including system decomposition, optimal design, process control, solution of nonlinear algebraic equations (NAE), differential algebraic equations (DAE), and others. In addition, it is more creditable that Professor Sargent does not only make great achievements in his own research, but also acts as a leader of PSE researchers, providing guiding light for the development of the whole field. In 1967, he published an inspiring and insightful article, pointing out possible directions for future research [4]. The most important one in this article might be the idea of integrated design, i.e., combining design and optimization instead of regarding them as two separate tasks. Sargent also pointed out the need for future work in better understanding of physical mechanisms of chemical process, in development of model simplification techniques, and in exploration of dynamic behaviour. In 1971, he presented another review article as a supplement of the former one [4], in which he pointed out that much work remained to be done in the solution of large-scale NAEs, stochastic optimal control, nonlinear filtering, and the automatic determination of model structure [5]. Those research directions he had mentioned have almost all become research frontends in the next few decades. With such significant contributions, P...

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“…However, each of these methods has their own restrictions such as high operating pressure, membrane fouling, low selectivity, and high energy consumption. 9 The SLM process shows a great potential in removal and recovery of a desired solute. The removal and recovery processes in SLM occur in one single step, thus providing maximum driving force for the separation of desired solutes with high recovery rates.…”

Section: Introductionmentioning

confidence: 99%

Effect of VIPS fabrication parameters on the removal of acetic acid by supported liquid membrane using a PES–graphene membrane support

et al. 2018

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In this study, the removal of acetic acid by supported liquid membrane (SLM) using hybrid polyethersulfone (PES)-graphene membrane prepared by vapor induced phase separation (VIPS) was investigated. The effects of graphene loading, coagulation bath temperature, air exposure time, and air humidity on the morphology, mechanical strength, porosity, and contact angle of the membrane were analyzed. The performance and stability of the hybrid membrane as a SLM support for acetic acid removal were studied. The best PES-graphene membrane support was produced at a coagulation bath temperature of 50 C, an air exposure time of 30 s and air humidity of 80%. The fabricated membrane has a symmetrical micropore cellular structure, high porosity and high contact angle. Under specific SLM conditions, almost 95% of acetic acid was successfully removed from 10 g L À1 aqueous acetic acid solution. The hybrid membrane remains stable for more than 116 h without suffering any membrane breakage during the continuous SLM process.

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Optimization of reverse osmosis networks with split partial second pass design

Cited by 42 publications

References 24 publications

Energy Recovery in SWRO Desalination: Current Status and New Possibilities

Energy Recovery in SWRO Desalination: Current Status and New Possibilities

Advances in Energy Systems Engineering and Process Systems Engineering in China—A Review Starting from Sargent’s Pioneering Work

Effect of VIPS fabrication parameters on the removal of acetic acid by supported liquid membrane using a PES–graphene membrane support

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