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Iran, China sign deal to construct desalination facility – Ilam – Iran

The Industrial Development & Renovation Organization of Iran (IDRO Group) and China’s ZSM signed an agreement whereby the Chinese firm will set up a water treatment facility in Iran’s western province of Ilam.

The deal was signed on Thursday during a ceremony in Tehran attended by Iranian Minister of Industry, Mines and Business Mohammad Shariatmadari, IRIB news agency reported on October 18.

(LINK).

Iran, China sign deal to construct desalination facility – Ilam – IranDME GmbH2018-10-19T11:29:07+02:00

Electrospraying a better desalinization membrane – Connecticut – Connecticut – USA

additive method of polyamide formation, which allows for greater control over both the thickness and texture of the ultrathin films, by building them layer by molecular laye

Electrospraying a better desalinization membrane – Connecticut – Connecticut – USADME GmbH2018-08-28T13:19:22+02:00

Membrane-Based Salinity Gradient Processes for Desalination Handbook

Two Swansea University chemical engineering academics have written a handbook which reviews current state-of-the-art developments in salinity gradient processes in desalination, one of the most promising technologies to improve energy efficiency in desalination. The impending crisis posed by water stress and poor sanitation represents one of the greatest human challenges for the 21st century, and membrane technology has emerged as a serious contender to confront the crisis on a global scale. Seawater desalination is poised to become one of the main alternative freshwater resources as almost 60% of the world’s population live less than 36 miles from a seacoast. Membrane-based processes […]

Membrane-Based Salinity Gradient Processes for Desalination HandbookDME GmbH2018-01-31T16:27:21+01:00

Battery electrode deionization (BDI) -improvement of capacitive deionization (CDI)

A feed solution contained in a reservoir was separately fed to the two inlets of the flow cell using pumps, one desalinated and the other concentrated. This is achieved by applying electrical current to the flow cell through wires using a power source (not shown in this photo). The conductivity of the discharge was then measured using flow conductivity meters located at each outlet, which were monitored by computer. Credit: Taeyoung Kim

(LINK)

Battery electrode deionization (BDI) -improvement of capacitive deionization (CDI)DME GmbH2018-01-31T16:16:17+01:00

Rich Mesostructures Derived from Natural Woods for Solar Steam Generation

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A tree is a living energy-water system. Intensive study of tree-derived natural wood is of great significance for the sustainable development of human civilization and reduced dependence on nonrenewable resources. Here, we report on the mesostructures of several natural wood materials as well as their thermal conductivities and mechanical properties. We found that natural wood, including hardwood and softwood, possesses excellent hydrophilicity, an interconnected pore network, low thermal conductivity, and various mechanical properties. Inspired by the critical ecological energy-water nexus, high-efficiency solar steam generation based on natural wood is demonstrated in this work. The variation in multiple […]

Rich Mesostructures Derived from Natural Woods for Solar Steam GenerationDME GmbH2018-01-29T08:09:37+01:00

Xylem Inc. gives Water Prize to Team of Students from India – USA

Xylem Inc., leading global water technology company, dedicated to solving the world’s challenging water issues, has given the Xylem Water Prize 2017 to a team of students from India. The theme of this year’s International Junior Science Olympiad was “water and sustainability” in the Netherlands. More than 300 students aged 15 years or younger from 50 different countries tested their scientific knowledge and skills. As a sponsor of the IJSO, Xylem launched the first Xylem Water Prize, which invited participating students to produce a video answering the question, “How do you solve water?” All submissions were evaluated for impact, […]

Xylem Inc. gives Water Prize to Team of Students from India – USADME GmbH2017-12-21T09:24:30+01:00

Ion concentration polarization (ICP) – Low-Cost and Pump-Free Water Desalination

Low-cost small-scale water desalination could be very useful to ensure the supply of drinking water in developing and remote areas. Ion concentration polarization (ICP) is a desalination technique that requires little energy, which could make it suitable for such applications. The method works by applying a voltage to an ion-selective membrane, which causes a depletion of ions around the membrane. This zone repels charged species. However, the technique is usually performed using expensive microfluidic devices. Hong Liu and colleagues, Southeast University, Nanjing, China, have developed a low-cost, fabric-based desalination setup that uses ICP. The team used polyester fabric, cut […]

Ion concentration polarization (ICP) – Low-Cost and Pump-Free Water DesalinationDME GmbH2017-12-18T16:27:04+01:00

Coming soon: DME e.V. Desalination Technology Map – Moers – Germany

Coming soon: DME e.V. Desalination Technology Map
Dienstag, Dezember 19, 2017

Comprehensive overview on 17 desalination technologies (part 1)

(in alphabetical order):

CDI – Cpacitive Deionization

ED/EDR – Electrodialysis (Reverse)

EDI – Electrodeionization

FD – Freeze-Thaw Desalination

FO – Forward Osmosis

GH – Gas Hydrates

HD – Humidification-Dehumidification

IX – Ion Exchange

MED – Multi-Effect-Distillation

MD – Membrane Distillation

MDC – Microbial Desalination Cells

MSF – Multistage Flash Evaporation

MVC – Mechanical VApor Compression

OTED – Ocean Thermal Energy Desalination

RO – Reverse Osmosis

RSE – Rapid Spray Evaporation

TVC – Thermal Vapor Compression

Introduction to the fundamentals of desalination (part 2)

Posted by Peter Tillack

(LINK!)

Coming soon: DME e.V. Desalination Technology Map – Moers – GermanyDME GmbH2017-12-21T11:23:07+01:00

Scalable and Continuous Water Deionization by Shock Electrodialysis – Entsalzen durch Elektroschock – MIT- USA

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Die Physik hinter dem System der so genannten Schock-Elektrolyse ist teilweise noch unverstanden und beruht auf mikrofluiden Effekten. Dabei wird das zu entsalzende Wasser durch eine Fritte geleitet – also eine Art Glaskügelchenpulver –, die als mittlere Schicht zwischen Elektroden liegt. Wird Strom angelegt, entstehen im Wasserkörper lokal ionenreiche und -arme Bereiche. Erhöht sich die Stromstärke, schlägt ab einem bestimmten Punkt eine Schockwelle zwischen den ionenreichen und -armen Wasserlinsen durch und treibt diese durch eine starke Strömungswirkung in verschiedene Richtungen auseinander. Eine feste Trennmembran in einer vorausberechneten Position inmitten der induzierten Strömung hält salziges und Süßwasser dann getrennt, beschreiben die Wissenschaftler […]

Scalable and Continuous Water Deionization by Shock Electrodialysis – Entsalzen durch Elektroschock – MIT- USADME GmbH2017-12-15T14:07:59+01:00

Synthetic, light-driven proton pump has the added potential capability to desalinate with direct solar power

By binding photosensitive dyes to common plastic membranes and adding water, chemists at the University of California, Irvine have made a new type of solar power generator. The device is similar to familiar silicon photovoltaic cells but differs in a fundamental way: Instead of being produced via electrons, its electricity comes from the motion of ions. Dubbed the “synthetic, light-driven proton pump” by its creators, the innovation – because of its ionic basis – has the added potential capability of taking the salt out of seawater. “The materials used to make such a device can be dirt-cheap,” said Shane […]

Synthetic, light-driven proton pump has the added potential capability to desalinate with direct solar powerDME GmbH2017-12-15T13:51:19+01:00