Continuous ion-selective separation by shock electrodialysis

Cleaning water remains a challenge across sectors and across the globe. Many go without access to clean drinking water simply because the technologies that exist are too expensive in capital or energy. Areas thought to have reliably safe water can be betrayed by aging water infrastructure and exposed to hazardous contaminants. In addition to the need to purify drinking water is the necessity to treat waste water produced by chemical or energy plants. For a long time, reverse osmosis has been used as a catch-all technology for the robust treatment of contaminated water. That robustness comes as the cost of high energy requirements and membranes that can foul quickly under harsh conditions. For low-salinity separations or separations that target specific ions in solution, there may be a better technological fit. In this thesis, shock electrodialysis (SED) is demonstrated to achieve highly selective continuous removal of magnesium ions from an aqueous mixture of NaCl and MgCl₂.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Chemical Engineering

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2019

Author dc:creator

• Conforti, Kameron Michael.

Advisor dc:contributor.advisor

• Martin Z. Bazant and Cullen R. Buie.

• Chemical Engineering.

Statement dc:rights

• MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

https://hdl.handle.net/1721.1/121775

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/121775