Solutions to environmental challenges are often laden with paradoxes. Let’s take the case of desalination of sea water to make potable water. It’s becoming more common in some parts of the world, including the Mediterranean region and Australia. But there’s a catch: it’s energy-intensive, therefore carbon (more…)

Energy Recovery Inc. (ERI), a company based in San Leandro, California, has developed technology that reduces the amount of energy required for desalination.

The technology does not directly relate to filtering water, but instead harnesses the pressure in the wastewater stream of reverse osmosis systems and transfers that pressure to the incoming feed stream to reduce the (more…)

More than $88 billion will be invested in desalination technologies worldwide from 2010 to 2016 as regions face dwindling supplies of freshwater and steep population growth, according to a new report. Declining costs associated with several key desalination technologies — including reverse osmosis — will make saltwater- (more…)

Water is the new oil. The $425 billion global water sector remains at the forefront of industrial, geopolitical, and social agendas because of a growing supply/demand imbalance and trends in water scarcity, quality, and safety issues. Only 3% of the world’s water is freshwater available to humans and the environment, and water scarcity is a growing problem. By 2025, it is (more…)

“Water, Water everyone, nor any drop to drink”
-Rime of the ancient mariner by Coleridge

We’ve all heard or read that “water is the new oil”, often as a pundit’s shorthand for some market prediction. Drinking water, we are told by analysts and environmentalists, is a rare, limited resource which the world is (more…)

Dow Chemical Company, a worldwide leader in the global chemical industry, and sponsor of the 2010 Dow Live Earth Run for Water, has entered into agreements with the new Saudi Arabian King Abdullah University of Science and Technology (KAUST)  for developing cleaner, new routes for producing chemical derivatives.

The two are also looking into ways for carbon capture –a method which proposes to suck up and store greenhouse gas emissions.

Although many of the chemicals produced by the American chemical giant are used in the petroleum distilling and petrochemical industries, with much of the company’s “raw material” is coming from Saudi Arabia.

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It sits in the middle of a harsh, barren desert, sweltering in searing heat. It has no clean water, its sea is polluted and there is no topsoil, just a covering of sand. It is also the biggest per capita consumer of fuel, massively reliant on cars, power-hungry desalination and air-conditioning. And with all this, can the United Arab Emirate state of Abu Dhabi really succeed in building a new “green city” in the Middle East?

If you can believe visionary people like architect Gerard Evenden (his words above), from the British architectural firm Foster & Partners, yes it can. Billions of dollars are riding on the assumption

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Water agencies facing droughts and shortages of freshwater, such as in coastal California, have been turning increasingly to desalination this year.

However, current desalination methods can be expensive and energy inefficient. Watchdog groups prefer water conservation and efficiency efforts, and charge that tapping the oceans for potable water can pollute waterways and kill marine creatures.

Yet could desalination become more viable and efficient? The Global Cleantech 100 list anointed several companies with that aspiration as technology innovators earlier this month. (more…)

Chris Tobias recently wrote about waste to energy in Singapore, illustrating the city’s exemplary response to fly ash left over from the incineration process. I just read an interesting French book on water, and one of the most interesting parts of the book was about Singapore.

Written by Erik Orsenna, a member of the prestigious Académie française, L’Avenir de l’eau (Water’s future) enables us to travel all around the world (albeit reading) and gathers facts and figures on how water issues differ from country to country.

Perfectly located between East and West Asia, Singapore is an important local hub for 4,000 international companies. The city’s geostrategic importance led to an important population boom, with the number of inhabitants climbing from 1.5 million at the time of independence in 1965 to more than 4.5 million today.

Despite receiving a lot of rainwater (there are 2,415 mm of precipitations per year, compared to roughly 500 mm for San Francisco and 1,200 mm for New York City), the city lacks water.

The precious liquid comes from four main sources: rain, water treatment, desalination and imports from Malaysia. (more…)

The NATO Science for Peace Program and the Middle East Desalination Research Center (MEDRC) recently awarded grants to researchers at Ben Gurion University of the Negev to continue working on a novel desalination method.  In a region where potable water sources are so scarce, these methods are crucial to water independence and reducing reliance upon imported water sources (which require a lot of fossil fuels).

The team, lead by Dr. Jack Gilron (Zuckerberg Institute for Water Research) and Professor Eli Korin (Department of Chemical Engineering), has developed a desalination method by reverse osmosis that exploits “the finite kinetics of membrane fouling processes by periodically changing the conditions leading to membrane fouling before it can occur.”

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