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Wastewater concentrator uses waste heat to lower treatment costs

Landfill leachate and other challenging wastewaters incur rising treatment and disposal costs. Technology developed by Heartland Water Technology, Inc. (Hudson, Mass.; www.heartlandtech.com) can lower costs for treating wastewater by slashing wastewater volumes by 95% or more, using waste heat as…

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H2SO4 Catalyst BASF SE (Ludwigshafen, Germany; www.basf.com) has introduced a new catalyst for making sulfuric acid. The cesium-based O4-115 Quattro catalyst has a unique geometrical shape — a combination of four strands — leading to a 30% greater catalytic surface…

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Save energy and water with a system that generates boiler makeup water

In boilers, silicates can volatilize with the generated steam and then form silicate glass on turbine blades, causing an imbalance. Therefore, the concentration of silicates in boiler circuits must be reduced to below 0.5 parts per million (ppm). The conventional…

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Reduce oxygen waste in ozone generation with this O2-recovery system

A new adsorption-based technology can separate ozone from oxygen in O3-generating systems, allowing recycling of unreacted O2. In corona-discharge O3 generation, O2 molecules are split by passage through an electric field to create free oxygen atoms, which quickly combine with…

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Ceramic pump makes molten metals motive

Researchers at the Georgia Institute of Technology (Ga. Tech; Atlanta; www.gatech.edu) have demonstrated a precision-machining technique to manufacture an entire pumping loop from materials that can withstand temperatures as high as 1,400–1,600°C. These materials are typically thought to be too…

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A fluorine-free membrane for fuel cells

Polymer-electrolyte fuel cells (PEFCs) are promising devices for clean power generation in automotive, stationary and portable applications. Up to now, the proton exchange membranes (PEMs) used in PEFCs have been based on perfluorosulfonic acid (PFSA) ionomers (for example, Nafion). However,…

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Making anodes for super-fast charging batteries

A new process for producing lithium titanate oxide (LTO) anode materials could lead to smaller batteries with ultrafast recharging. LTO offers a significantly higher surface area than graphite anode materials, which enables rapid electron transit and, ultimately, much faster recharging…

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A way to dry compressed air more cost effectively

After years of testing and development, Atlas Copco Compressors LLC (Rock Hill, S.C.; www.atlascopco.us) will begin production of a new air-dryer technology by the end of this year. Unlike conventional drying systems, the MDG rotary drum dryer guarantees a stable…

An improved anti-corrosion coating for steel

Using zinc-based coatings to protect galvanized steel from corrosion has been standard practice in the steel industry for decades, but these processes have several key disadvantages. First, achieving longer corrosion performance requires thicker layers of zinc, which raises costs and…

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Trash bags Barrier films used in food packaging are difficult to recycle effectively, because they often contain multiple polymers that are not compatible with one another in the mixing steps required for the recycling process. Now, trash bags made from…