Performance and economics of monovalent selective electrodialysis desalination for irrigation

Reverse osmosis (RO) is the most widely used desalination technology for the treatment of irrigation source water and wastewater. Brackish groundwater, seawater, and agricultural effluent often contain both monovalent ions damaging to crops (Na⁺, Cl⁻) and divalent ions beneficial for crops (Ca²⁺, Mg²⁺, SO²⁻₄). RO removes both types of ions. These beneficial ions must then be reintroduced to the desalinated water through the addition of fertilizer. Monovalent selective electrodialysis (MSED) demonstrates greater potential to align with the needs of the agriculture sector. MSED is a variant of conventional electrodialysis (ED). MSED preferentially removes monovalent ions relative to multi-valent ions, defined as monovalent selectivity, via selective ion-exchange membranes. MSED operates at a significantly higher water recovery than RO.

Name thesis:degree_name

Doctoral

Department dc:contributor.department

Massachusetts Institute of Technology. Department of Mechanical Engineering

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2021

Author dc:creator

• Ahdab, Yvana D.(Yvana Damiella)

Advisor dc:contributor.advisor

• John H. Lienhard V.

• Mechanical Engineering.

Statement dc:rights

• MIT theses may be protected by copyright. Please reuse MIT thesis content according to the MIT Libraries Permissions Policy, which is available through the URL provided.

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/1721.1/130834

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/130834