Justification for community-scale photovoltaic-powered electrodialysis desalination systems for inland rural villages in India

Wright, Natasha C.; Winter, G V Amos

doi:10.1016/j.desal.2014.07.035

Cited by 105 publications

(69 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…ED has successfully been used for the desalination of brackish water [1][2][3][4][5][6][7][8][9], and for the concentration of seawater [10,11] or reverse-osmosis brine for salt production [1,12,13]. Despite the large number of studies published on ED, only a small number of these has analyzed the optimal design and operation of ED systems, with the bulk of the work being focused on brackish-water desalination.…”

Section: Introductionmentioning

confidence: 99%

Optimal design and operation of electrodialysis for brackish-water desalination and for high-salinity brine concentration

et al. 2017

View full text Add to dashboard Cite

Electrodialysis (ED) is a desalination technology that has been deployed commercially for decades. However, few studies in the literature have looked at the optimal design and operation of these systems, especially for the concentration of high-salinity brines. In this paper, a set of constraints is defined to allow a fair comparison between different system sizes, designs, and operating conditions. The design and operation of ED are studied for the applications of brackish-water desalination and of high-salinity brine concentration for a fixed system size. The set of variables that determine the power consumption of a fixed-size system is reduced to include only the channel height and the velocity, with all the other design and operation variables depending on these two variables. After studying the minimization of power consumption for a fixed system size, the minimum costs associated with the different system sizes are studied, and the differing trends in brackish-water and high-salinity applications are compared. Finally this paper presents the effect of the cost modeling parameters on the trends of the optimal system size, current density, length, channel height, and velocity for the two applications studied.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimal design and operation of electrodialysis for brackish-water desalination and for high-salinity brine concentration

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The full justification of these requirements is found in previous work by the authors [6] and is summarized here.…”

Section: System Design Requirements For Village-scale Water Plantmentioning

confidence: 92%

Energetic and Socioeconomic Justification for Solar-Powered Desalination Technology for Rural Indian Villages

Wright

Winter

2014

Volume 2A: 40th Design Automation Conference

Self Cite

View full text Add to dashboard Cite

This paper provides justification for solar-powered electrodialysis desalination systems for rural Indian villages. It is estimated that 11% of India's 800 million people living in rural areas do not have access to an improved water source. If the source's quality in regards to biological, chemical, or physical contaminants is also considered, this percentage is even higher. User interviews conducted by the authors and in literature reveal that users judge the quality of their water source based on its aesthetic quality (taste, odor, and temperature). Seventy-three percent of Indian villages rely on groundwater as their primary drinking supply. However, saline groundwater underlies approximately 60% of the land area in India. Desalination is necessary in order to improve the aesthetics of this water (by reducing salinity below the taste threshold) and remove contaminants that cause health risks.Both technical and socioeconomic factors were considered to identify the critical design requirements for inland water desalination in India. An off-grid power system is among those requirements due to the lack of grid access or intermittent supply, problems faced by half of Indian villages. The same regions in India that have high groundwater salinity also have the advantage of high solar potential, making solar a primary candidate. Within the salinity range of groundwater found in inland India, electrodialysis would substantially reduce the energy consumption to desalinate compared to reverse osmosis, which is the * Address all correspondence to this author. standard technology used for village-level systems. This energy savings leads to a smaller solar array required for electrodialysis systems, translating to reduced capital costs.

show abstract

“…The cost of a small scale ED system, on the other hand, is currently less understood and may be less expensive than currently available RO units. Furthermore, ED membranes are expected to last longer than RO membranes [6]. Finally, according to Wright and Winter [6], for lower feed salinities (500-3000ppm), ED is expected to be more energy efficient than RO.…”

Section: Comparison Of High-pressure Closed Circuit Ro To Edmentioning

confidence: 99%

“…Current in-home water purification systems either do not address the high levels of TDS present in the water or do so but provide low water recovery (as low as 30% [6]), further stressing the limited water resources. Electrodialysis (ED) was identified as a process that could be incorporated as part of a solution to address an unmet consumer need: a costcompetitive, high water recovery (up to 95% [6]) in-home desalination and treatment system.…”

Section: Motivation and Objectivementioning

confidence: 99%

“…Electrodialysis (ED) was identified as a process that could be incorporated as part of a solution to address an unmet consumer need: a costcompetitive, high water recovery (up to 95% [6]) in-home desalination and treatment system. The purpose of this research project was to determine the technical and economic feasibility of implementing ED in an in-home water treatment system for consumers in India.…”

Section: Motivation and Objectivementioning

confidence: 99%

See 1 more Smart Citation

Feasibility Study of an Electrodialysis System for In-Home Water Desalination and Purification in Urban India

Nayar

Sundararaman

Schacherl

et al. 2015

Volume 2A: 41st Design Automation Conference

Self Cite

View full text Add to dashboard Cite

show abstract

Justification for community-scale photovoltaic-powered electrodialysis desalination systems for inland rural villages in India

Cited by 105 publications

References 14 publications

Optimal design and operation of electrodialysis for brackish-water desalination and for high-salinity brine concentration

Optimal design and operation of electrodialysis for brackish-water desalination and for high-salinity brine concentration

Energetic and Socioeconomic Justification for Solar-Powered Desalination Technology for Rural Indian Villages

Feasibility Study of an Electrodialysis System for In-Home Water Desalination and Purification in Urban India

Contact Info

Product

Resources

About