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Title: Low-cost desalination of seawater and hypersaline brine using nanophotonics enhanced solar energy membrane distillation

Journal Article · · Environmental Science: Water Research & Technology
DOI:https://doi.org/10.1039/d0ew00254b· OSTI ID:1643676

A stand-alone small-scale nanophotonics enhanced solar membrane distillation (NESMD) testbed was designed, developed, and tested for desalinating seawater and high salinity feedwaters. This NESMD system can take almost any source water and turn it into clean water with sunlight as the only energy source. The NESMD technology applies nanophotonic coating materials on a commercial hydrophobic polypropylene support of a polytetrafluoroethylene (PTFE) membrane surface. The photothermal coating serves as a solar thermal collector, absorbs solar energy, and generates highly localized heat on the membrane, while the rest of the membrane performs membrane distillation functions. The presented NESMD system is equipped with an internal heat recovery system with no need for external electricity and no additional water for cooling. The NESMD testbed is installed and tested at Rice University campus (29.7174° N, 95.4018° W). In this study, real seawater from Galveston Bay, Texas, U.S. and high salinity simulated feedwaters (total dissolved solids (TDS) of 113 200–200 000 PPM) have been tested for long-term testing under the weather conditions of Houston, Texas. Here, the field testing results showed stable desalination performance in consecutive 5–8 hour operation cycles, with a TDS removal of ≥99.5% in all experiments. An average daily membrane flux of ≥0.75 L m–2 h–1 was achieved at a solar intensity close to 1 kW m–2 without an external heat exchanger. Further investigations and improvements are required to enhance the performance of the reactor since it is still a new promising technology.

Research Organization:
Rice Univ., Houston, TX (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0008397
OSTI ID:
1643676
Alternate ID(s):
OSTI ID: 1637722
Journal Information:
Environmental Science: Water Research & Technology, Vol. 6, Issue 8; ISSN 2053-1400
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

References (32)

The Future of Seawater Desalination: Energy, Technology, and the Environment journal August 2011
Removal of benzene traces from contaminated water by vacuum membrane distillation journal April 1996
Pollutants removal from wastewaters through membrane distillation journal November 2005
Study on the concentration of acids by membrane distillation journal June 1995
Photothermal nanocomposite membranes for direct solar membrane distillation journal January 2017
Concentration of glycerol from dilute glycerol wastewater using sweeping gas membrane distillation journal April 2014
Air gap membrane distillation: A review journal July 2019
Membrane distillation journal February 1997
Concentration of radioactive components in liquid low-level radioactive waste by membrane distillation journal November 1999
Membrane distillation-crystallization of seawater reverse osmosis brines journal January 2010
Direct contact membrane distillation for treatment of oilfield produced water journal April 2014
Solar thermal desalination as a nonlinear optical process journal June 2019
Overview of systems engineering approaches for a large-scale seawater desalination plant with a reverse osmosis network journal March 2009
Theoretical and Experimental Study on Membrane Distillation in the Concentration of Orange Juice journal July 1994
Field Demonstration of a Nanophotonics-Enabled Solar Membrane Distillation Reactor for Desalination journal September 2019
Recovery of volatile fruit juice aroma compounds by membrane technology: Sweeping gas versus vacuum membrane distillation journal July 2011
Low-cost high-efficiency solar membrane distillation for treatment of oil produced waters journal November 2020
Membrane-distillation desalination: Status and potential journal January 2005
PVDF hollow fiber and nanofiber membranes for fresh water reclamation using membrane distillation journal November 2013
Feasibility of sweeping gas membrane distillation on concentrating triethylene glycol from waste streams journal December 2016
Sweeping gas membrane distillation (SGMD) for wastewater treatment, concentration, and desalination: A comprehensive review journal July 2020
Review of technologies for oil and gas produced water treatment journal October 2009
Distillation vs. membrane filtration: overview of process evolutions in seawater desalination journal June 2002
Quantity of flowback and produced waters from unconventional oil and gas exploration journal January 2017
Terminology for Membrane Distillation journal December 1989
Removal of hazardous volatile organic compounds from water by vacuum pervaporation with hydrophobic ceramic membranes journal January 2015
Membrane Distillation and Related Operations—A Review journal January 2005
Membrane distillation: Recent developments and perspectives journal January 2015
Desalination Freshens Up journal August 2006
Separation of binary mixtures by thermostatic sweeping gas membrane distillation I. Theory and simulations journal May 2002
Extraction of organic components from aqueous streams by vacuum membrane distillation journal June 1993
A new process to remove halogenated VOCs for drinking water production: vacuum membrane distillation journal September 1998