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Making aerogel absorbants from wastepaper

A team from the National University of Singapore (www.nus.edu.sg), led by assistant professor Duong Hai Minh from the Dept. of Mechanical Engineering, has succeeded in converting paper waste into cellulose aerogels that are nontoxic, ultralight, flexible, extremely strong, and water…

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Chementator Briefs

Bio-Hydrogen Scientists at Indiana University (IU; Bloomington, Ind.; www.iu.edu) have created a highly efficient biomaterial that catalyzes the formation of hydrogen from water. The biomaterial could be used to produce H2 or generate power from H2 in a fuel cell.…

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A ‘greener’ route for making red pigments

Early this year, Lanxess AG (Cologne, Germany; www.lanxess.com) will start production of bright red iron-oxide pigments at its Ningbo, China production site. The production facility will utilize — for the first time — the Ningbo Process, a highly sustainable production…

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These CeO2 nano-rods store a lot of O2 at low temperatures

Automobile catalytic converters contain cerium-based co-catalysts to enhance the overall effectiveness of the converter by absorbing and releasing oxygen to convert CO into CO2. Existing emission control systems typically use CeO2-based materials, such as solid solutions of ceria and zirconia,…

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Coral enhances the removal of mercury from wastewater

A convenient route for the fabrication of a bio-mimetic, coral-like nanoporous γ-Al2O3 with a higher capacity to adsorb Hg(II) in aqueous solution than those of commercial Al2O3, has been reported by a research group from Anhui Jianzhu University (Hefei City,…

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Alkylate process featuring a solid-acid catalyst can use multiple feedstocks

A recently announced process based on a novel solid-acid catalyst is effective at producing high-quality alkylate from a variety of feedstocks, including methanol. Technology developer Exelus Inc. (Fairfield, N.J.; www.exelusinc.com) says its technology converts methanol and mixed-butanes to high-octane alkylate.…

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Removing harmful metals from wastewater with crab shells

Copper and cadmium exist naturally in the environment, but human activity can increase their concentrations to a point where they become a health hazard. Conventional wastewater treatment to remove those metals includes chemical precipitation, coagulation, flocculation, ion exchange, membrane filtration,…

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A very efficient heat exchanger for very hot applications

At the end of last year, Mino Ceramics Co. (Nagoya City, Japan; www.mino-ceramic.co.jp) began shipping its first commercial high-temperature heat exchangers, which were developed in a project by Thermal Management Materials and Technology Research Assn. (TherMAT, Tokyo, Japan; www.thermat.jp). Developed…

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Using air and hydrostatic pressure to store energy underwater

Consisting of a land-based mechanical facility and underwater pipelines and accumulators, the underwater compressed-air energy-storage (UCAES) system from Hydrostor Inc. (Toronto, Ont., Canada; www.hydrostor.ca) takes electricity (potentially excess solar or wind energy) and uses it to run a compressor, which…

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Oil-free compressed air at a fraction of the cost

The recently commercialized high-speed turbo (HST) compressors from BOGE Kompressoren Otto Boge GmbH & Co. KG (BOGE; Bielefield, Germany; www.boge.de) produce 100% oil-free (Class 0) compressed air at the highest degree of efficiency and with minimal maintenance effort, according to…