Sustainability assessment of electrodialysis powered by photovoltaic solar energy for freshwater production

Fernández-González, C.; Domínguez-Ramos, Antonio; Ibáñez, Raquel; Irabien, Ángel

doi:10.1016/j.rser.2015.03.018

Cited by 73 publications

(34 citation statements)

References 67 publications

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“…Desalination is a competitive alternative, worldwide implemented, for the freshwater supply of countries under water shortages. However, it is associated to both indirect and direct burdens that compromise its sustainability [1]. Indirect environmental burdens are related to greenhouse gases emissions due to the high-energy requirements of desalination technologies.…”

Section: Introductionmentioning

confidence: 99%

“…Indirect environmental burdens are related to greenhouse gases emissions due to the high-energy requirements of desalination technologies. The integration of desalination technologies with renewable power devices is a promising option to overcome this global burden [1][2][3]. Direct impacts of desalination are associated to the local disposal of desalination brines.…”

Section: Introductionmentioning

confidence: 99%

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Valorization of desalination brines by electrodialysis with bipolar membranes using nanocomposite anion exchange membranes

et al. 2017

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Electrodialysis with bipolar membranes (EDBM) is a promising technology that simultaneously treats and valorizes desalination brines into acids and bases. An important techno-economic challenge of EDBM in this application is the purity of the products, related to the need for more selective ion exchange membranes with good stability working with acids and bases. This work presents the results of the treatment of model desalination brines by EDBM using nanocomposite anion exchange membranes in order to reduce the sulfate content as the main impurity in the acid stack. These membranes are composed by polyethylene, polypropylene, sulfonated poly (2,6dimethyl-1,4-phenylene oxide) (sPPO) and different loads of Fe 2 O 3-SO 4 2nanoparticles. A reduction of the sulfate content in the acid stack was observed when using nanocomposite membranes. The stability of these membranes was evaluated measuring the Cl-/SO 4 2selectivity after 31, 62 and 93 hours of operation. FTIR spectra before and after 93 hours of operation also confirmed the stability of the membranes. The evolution of the main impurities in the acid and the base stacks versus time when applying different current densities is included and related to current efficiency. An estimation of the proton and hydroxyl ions leakages at the different current densities is also presented.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Valorization of desalination brines by electrodialysis with bipolar membranes using nanocomposite anion exchange membranes

et al. 2017

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“…As an electricity-driven process, ED is suitable to be combined with PV system. In terms of brackish water treatment, as shown in Table 8, the reported SEC of ED is 0.72~4.05 kWh/m 3 , which lies in the range 0.4~4 kWh/m 3 summarized by Fernandez-Gonzalez et al [128]. The energy consumption is even lower than RO for brackish water with low salinity, i.e.…”

Section: Solar-powered Edmentioning

confidence: 87%

“…Accordingly, PV-ED should be economically competitive with PV-RO. Water production cost from brackish groundwater under 5000mg/L TDS have been reported in the range of $0.19~16.0/m 3 [128] with lower bound less than that of PV-RO (see section 2.2.5). The potential of ED in running directly with PV arrays is a particular advantage over RO.…”

Section: Solar-powered Edmentioning

confidence: 99%

“…However, it should be noted that the cost estimation are mainly based on simulation as no large scale solar desalination plant has been built yet. 1) The water cost values are derived by combining data collected in Table 1~8 and reference [101], [102], [116], [128] 2) The highlighted columns in each row represent the recommended capacity of each technology.…”

Section: Summary Of Solar Desalination Technologiesmentioning

confidence: 99%

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Application of solar energy in water treatment processes: A review

et al. 2018

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The utilization of solar energy to drive water treatment processes is a potential sustainable solution to the world's water scarcity issue. In recent years, significant efforts have been devoted to developing and testing innovative solar based water treatment technologies, which are comprehensively reviewed in this paper. Recent developments and applications of seven major solar desalination technologies, solar photocatalysis process and solar disinfection are investigated. Potential integration of solar technologies and desalination processes are summarized. By collecting and analysing performance data from recent studies, the status of productivity, energy consumption and water production costs of different technologies is critically reviewed. The real world applicability as well as technical and economic feasibility is also evaluated. Presently, most of the solar water treatment processes are still under development with limited real applications. Economic competitiveness is among the major reasons that affect the scaling up and commercialization. It is revealed that the reported water costs of small to medium scale solar desalination plants are in the range of US$0.2-22/m 3 , much higher than conventional fossil fuel based plants. However, the estimated low water costs (US$0.9-2.2/m 3) for large scale solar based plants indicate that solar based alternatives will become potentially viable in the near future.

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