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Heat plus light may boost solar energy efficiency

Photovoltaic cells typically operate at 20% efficiency in converting solar energy to electricity. A new system that could boost the efficiency to as much as 60% by combining the light and heat of solar radiation is being developed at Stanford…

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This membrane system extracts hydrogen from mixed gas streams

A metal membrane system developed by Eltron Research and Development (Boulder, Colo., www.eltronresearch.com) separates hydrogen from mixed-gas feed streams that result from gasification, steam reforming and petrochemical processes. Based on a proprietary, dense metal alloy with hydrogen permeability that is…

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A promising way to reduce the cost of producing oil from oil sands

Roughly 80% of the heavy oil in Alberta’s oil sands is too deep for open-pit mining, the most common production method at present. Consequently, this oil will have to be recovered by in situ methods, such as steam-assisted gravity drainage…

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Food from algae

TNO (Delft; www.tno.nl) and Ingrepro Renewables B.V. (Borculo, both the Netherlands; www.ingrepro.nl) have started a joint-research project to extract food ingredients from algae. Proteins, which account for up to 60 wt.% of algae, could serve as a sustainable alternative to…

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Sugar-derived compounds can be model solidifiers for oil spills

Professor George John and graduate student Swapnil Jadhav at the City College of New York (www.ccny.cuny.edu) are lead authors of a paper on a class of compounds, known as phase-selective gelators, that can selectively solidify an oil phase in water.…

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September chementator briefs

  Worlds largest PDH unit Lummus Technology (Bloomfield, N.J.), a CB&I company (The Woodlands, Tex.; www.cbi.com), has been awarded a contract by Tianjin Bohua Petrochemical Co. for the license and engineering design of a grassroots propane dehydrogenation (PDH) unit to…

Enzyme-based method could make CO2 capture economically viable

Codexis (Redwood City, Calif.; www.codexis.com) and CO2 Solution (Quebec City, Canada; www.co2solution.com) have jointly developed a cost-effective method for capturing carbon dioxide from coal-fired power plants. Solvent-based systems for capturing CO2 are relatively well-understood, but they have not been widely…

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An attractive way to remove arsenic from water

A magnetic composite based on reduced graphene oxide (RGO) has been developed by a Korean team with an exceptional capacity to remove arsenic from drinking water. The team, headed by professor Kwang S. Kim from the Center for Superfunctional Materials,…

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A more efficient, less expensive way to continuously make bioethanol

An enhanced reactor technology that boosts the speed of producing bioethanol by a factor of four while decreasing production costs by 25% compared to a stirred batch fermenter has been developed by IHI Corp. (IHI; Tokyo; www.ihi.co.jp). The technology features…

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Simplified electrodeionization technology reduces operating costs

Dow Water and Process Solutions (DW&PS; Minneapolis, Minn.; www.dowwaterandprocess.com), a business unit of The Dow Chemical Co., unveiled a simplified electrodeionization (EDI) product at the recent Singapore International Water Week event. The new version of the product reduces operating costs…