Long-run operation of a reverse electrodialysis system fed with wastewaters

Salvo, Javier Luque Di; Cosenza, Alessandro; Tamburini, Alessandro; Micale, G.; Cipollina, Andrea

doi:10.1016/j.jenvman.2018.03.110

Cited by 62 publications

(36 citation statements)

References 69 publications

(104 reference statements)

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“…They concluded that natural organic matter (NOM) plays a major role in RED fouling effects, with NOM decreasing the power density up to 43% [15]. Di Salvo et al (2018) investigated the use of high salinity fishery wastewater and low salinity wastewater after a membrane bioreactor in RED. They observed clear obstruction of the feed channels and adsorption of foulants onto the AEM [19].…”

Section: Introductionmentioning

confidence: 99%

“…Di Salvo et al (2018) investigated the use of high salinity fishery wastewater and low salinity wastewater after a membrane bioreactor in RED. They observed clear obstruction of the feed channels and adsorption of foulants onto the AEM [19]. Different anti-fouling strategies are reported.…”

Section: Introductionmentioning

confidence: 99%

“…Air sparging is an effective way to combat fouling when using real seawater and river water (after pre-treatment by 10 µm filtration) [20] and Moreno et al (2017) reported the use of CO 2 -saturated water as a two-phase flow for successful cleaning and fouling control [21]. Comparable to electrodialysis (ED) reversal, short ED pulses can be used in RED to detach foulants from the membranes [19]. Nevertheless, the literature on fouling in RED remains limited and has mainly focused on stack design [22,23], membrane development [24][25][26] and cleaning strategies [20,21] to combat fouling.…”

Section: Introductionmentioning

confidence: 99%

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Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

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Gutierrez

et al. 2019

Separation and Purification Technology

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art Highlights  RED-RO is a promising technology for energy-efficient seawater desalination  Secondary-treated wastewater is a potential low salinity source for RED  An efficient pre-treatment of wastewater is needed before use in RED  Rapid sand filtration and 100 µm provide efficient wastewater pre-treatment  River bank filtration does not provide adequate feed water quality AbstractAlthough Reverse Electrodialysis (RED) is most commonly known as a selective separation technology used for the production of sustainable energy, it can also serve as a valuable pre-desalination tool. By coupling RED to Reverse Osmosis (RO) for seawater desalination: (1) sustainable energy is produced in the RED process and (2) seawater is partially desalinated prior to RO thus, decreasing the energy demand. In this study, secondary-treated wastewater is proposed as the low salinity source in RED and suitable pre-treatment techniques for this effluent are investigated. Although it is generally accepted that RED is less prone to fouling than typical pressure driven membrane processes, results showed that pre-treatment is a key to ensure efficient operation of the wastewater-seawater RED. Both 100 µm filtration and rapid sand filtration proved to be suitable, with an increase in pressure drop of only 0.09-0.18 bar and a permselectivity decrease of only approximately 20% during 40 days of continuous operation. Conversely, River bank filtration did not perform better than the non-pretreated sample. As such, 100 µm filtration and rapid sand filtration are considered suitable, robust, and cost efficient pretreatment options for wastewater fed RED, enabling the improvement of the hybrid process of RED-RO seawater desalination.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

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Vooren

Gutierrez

et al. 2019

Separation and Purification Technology

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“…RED was performed with both compartments fed by treated wastewater [433]. Similarly to the previous cases, the low-salinity solution was a reclaimed urban WWTP effluent (from membrane bio-reactor pilot plant) at conductivity of 0.6-1.8 mS/cm (corresponding to~0.004-0.016 M NaCl).…”

Section: Energy Recoverymentioning

confidence: 99%

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

et al. 2020

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This paper presents a comprehensive review of studies on electrodialysis (ED) applications in wastewater treatment, outlining the current status and the future prospect. ED is a membrane process of separation under the action of an electric field, where ions are selectively transported across ion-exchange membranes. ED of both conventional or unconventional fashion has been tested to treat several waste or spent aqueous solutions, including effluents from various industrial processes, municipal wastewater or salt water treatment plants, and animal farms. Properties such as selectivity, high separation efficiency, and chemical-free treatment make ED methods adequate for desalination and other treatments with significant environmental benefits. ED technologies can be used in operations of concentration, dilution, desalination, regeneration, and valorisation to reclaim wastewater and recover water and/or other products, e.g., heavy metal ions, salts, acids/bases, nutrients, and organics, or electrical energy. Intense research activity has been directed towards developing enhanced or novel systems, showing that zero or minimal liquid discharge approaches can be techno-economically affordable and competitive. Despite few real plants having been installed, recent developments are opening new routes for the large-scale use of ED techniques in a plethora of treatment processes for wastewater.

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“…Permselectivities of up to 66% were reported by Tedesco et al when using an LCC solution of 0.5 M NaCl and HCC solutions of 5 M NaCl in RED [40]. In fact, the use of highly concentrated solutions also runs the risk of membrane fouling such as scaling [3,38,41], which can be controlled by, for example, periodic air sparging and/or feed water reversal [42]. A high fixed-charge density of an IEM would benefit at high salinity gradients by reducing the permeation of the co-ions, whereas thick membranes would benefit at low salinity gradients by decreasing the osmotic flux.…”

Section: Impact Under High Feed Salinity Conditionsmentioning

confidence: 99%

Design of Monovalent Ion Selective Membranes for Reducing the Impacts of Multivalent Ions in Reverse Electrodialysis

et al. 2019

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Reverse electrodialysis (RED) represents one of the most promising membrane-based technologies for clean and renewable energy production from mixing water solutions. However, the presence of multivalent ions in natural water drastically reduces system performance, in particular, the open-circuit voltage (OCV) and the output power. This effect is largely described by the “uphill transport” phenomenon, in which multivalent ions are transported against the concentration gradient. In this work, recent advances in the investigation of the impact of multivalent ions on power generation by RED are systematically reviewed along with possible strategies to overcome this challenge. In particular, the use of monovalent ion-selective membranes represents a promising alternative to reduce the negative impact of multivalent ions given the availability of low-cost materials and an easy route of membrane synthesis. A thorough assessment of the materials and methodologies used to prepare monovalent selective ion exchange membranes (both cation and anion exchange membranes) for applications in (reverse) electrodialysis is performed. Moreover, transport mechanisms under conditions of extreme salinity gradient are analyzed and compared for a better understanding of the design criteria. The ultimate goal of the present work is to propose a prospective research direction on the development of new membrane materials for effective implementation of RED under natural feed conditions.

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Long-run operation of a reverse electrodialysis system fed with wastewaters

Cited by 62 publications

References 69 publications

Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Secondary treated domestic wastewater in reverse electrodialysis: What is the best pre-treatment?

Electrodialysis Applications in Wastewater Treatment for Environmental Protection and Resources Recovery: A Systematic Review on Progress and Perspectives

Design of Monovalent Ion Selective Membranes for Reducing the Impacts of Multivalent Ions in Reverse Electrodialysis

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