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August 1, 2014
The effective removal of Cs+ ions from contaminated groundwater, seawater, and radioactive nuclear waste is crucial for public health and for the operation of nuclear power plants. Although several methods for the removal of Cs+ ions have been developed, there is still a need for better methods. Now a team of Korean researchers led by professor Kyung Byung Yoon from the Dept. of Chemistry, Sogang...
http://www.che.com/chementator/Microporous-vanadosilicate-efficiently-removes-cesium-from-wastewater_11994.html
August 1, 2014
Chemists from the National Institute of Advanced Industrial Science and technology (AIST; Tsukuba City, Japan; www.aist.go.jp) have developed a procedure for making the catalysts used in catalytic converters for treating the exhaust from diesel engines. The process, developed with support from a New Energy and Industrial Technology Development Organization (NEDO) project...
http://www.che.com/chementator/This-production-process-cuts-Pt-usage-in-catalytic-converters-in-half_11995.html
August 1, 2014
What is said to be the world’s first fermentation pathway from methane to lactic acid has been demonstrated by Calysta, Inc. (Menlo Park, Calif.; www.calysta.com). The fermentation process begins with an organism that feeds off of methane rather than typical sugar-based feedstocks and, through synthetic biology, has been altered to convert that methane to high levels of lactic acid. This lactic acid...
http://www.che.com/chementator/Demonstration-of-methane-fermentation-to-lactic-acid_11996.html
August 1, 2014
The research group of Shigeki Matsunaga, associate professor at the University of Tokyo (Japan; www.f.u-tokyo.ac.jp/~kanai), in collaboration with Ken Sakata at Hoshi University, has developed a new Co-based catalyst system that outperforms the existing rhodium-based catalyst system for the production of N-fused indol, an important precursor for pharmaceuticals. The catalyst...
http://www.che.com/chementator/Cobalt-a-less-expensive-and-more-efficient-catalyst-than-rhodium_11997.html
August 1, 2014
Outotec Oyj (Espoo, Finland; www.outotec.com) has developed a new chloride-based leaching process for recovering nickel from nickel matte — a commercial intermediate product of nickel smelting that contains about 65% of nickel. Developed since the 1980s, originally for Cu recovery and since extended to Ni, Zn and Au, the Outotec Nickel Matte Chloride Leaching process is a more resource-efficient and...
http://www.che.com/chementator/This-chloride-leaching-process-recycles-resources_11999.html
August 1, 2014
A new remediation approach for industrial heavy-metal waste has been developed by Lewis Environmental Services, Inc. (LES; Pittsburgh, Pa.; www.lesvc.com). The patented Enviro-Clean process adsorbs heavy metals from liquid waste streams onto a bed of specially treated granular activated carbon. Then, when the activated carbon is spent and loaded with heavy metals, the activated carbon is chemically...
http://www.che.com/chementator/A-heavy-metal-recovery-technique-that-produces-no-waste-streams-or-sludge_12002.html
August 1, 2014
  Advance in UF module The latest offering of ultrafiltration systems from Evoqua Water Technologies (Alpharetta, Ga.; www.evoqua.com) incorporates an advanced polyvinylidene fluoride (PVDF) membrane into a hydraulically balanced, modular filtration system. Known as Memcor CPII, the product employs a PVDF membrane with a uniform, but asymmetric morphology that forms a dense, permeable...
http://www.che.com/chementator/August-Chementator-Briefs_12003.html
August 1, 2014
A Korean team has developed a carbon material that is as effective as graphene in applications, such as solar cells and semiconductor chips, using a process that requires only two steps instead of the usual eight. High-quality graphene is usually manufactured using chemical vapor deposition (CVD). In this method the graphene is manufactured on the board of a metal film that serves as a catalyst. The...
http://www.che.com/chementator/A-two-step-process-for-making-graphene_12005.html
August 1, 2014
Scientists at the National Energy Technology Laboratory (NETL; Morgantown, W. Va.; www.netl.doe.gov) have demonstrated a process for enhancing the efficiency of the water-gas shift (WGS) reaction. The process revolves around a magnesium hydroxide sorbent material that can remove CO2 from coal gasification products at elevated temperatures. The industrially significant WGS reaction, often used to increase...
http://www.che.com/chementator/A-sorbent-that-enhances-the-water-gas-shift-reaction_12007.html
July 1, 2014
The potential usefulness of 1,1-di-substituted alkenes for making performance polymers has been recognized for some time, but commercialization has been elusive because of the reactive nature of the monomers. Startup company Sirrus Inc. (Loveland, Ohio; www.sirruschemistry.com) has developed technology to stabilize monomers in this chemical class, as well as the intermediates that precede them, enabling...
http://www.che.com/chementator/Platform-for-reactive-monomers-enables-short-cure-times-for-coatings_11899.html
July 1, 2014
A less expensive process for producing biodegradeable polyhydroxyalkanoate (PHA) plastics from renewable feedstocks is being scaled up by a factor of six, resulting in a 30,000–60,000-lb/mo pilot facility. The improved PHA process — developed by Meredian Inc. (Bainbridge, Ga.; www.meredianpha.com) — stems from a patent portfolio initially established by Proctor and Gamble. The microbial...
http://www.che.com/chementator/An-improved-PHA-bioplastic-process-is-scaled-up_11901.html
July 1, 2014
New bio-based polyimides (PIs) that withstand temperatures up to 390°C — the highest ever reported for a bioplastic — have been developed by Tatsuo Kaneko at the Japan Advanced Institute of Science and Technology (JAIST, Nomi City; www.jaist.ac.jp), in collaboration with Naoki Takaya at the...
http://www.che.com/chementator/This-inexpensive-bioplastic-takes-the-heat_11902.html
July 1, 2014
A new thermoset polymer has been discovered by researchers at IBM Research Almaden (San Jose, Calif.; www.research.ibm.com). The new material, polyhexahydrotriazine (PHT), has a very high Young’s Modulus (up to 14 GPa, compared with a Young’s Modulus of 4 GPa for typical polyimide thermosets), along with many other characteristics that make it a suitable thermosetting material. However, unlike...
http://www.che.com/chementator/New-polymer-is-said-to-be-first-ever-recyclable-thermoset_11904.html
July 1, 2014
NEC Corp. (Tokyo, Japan; www.nec.com) has developed a two-stage, heterogeneous synthesis for making a high-functionality bioplastic (70 wt.% plant content) from non-edible plant cellulose. The new bioplastic is said to have excellent thermo-plasticity (275 MFR), heat resistance (140°C glass transition...
http://www.che.com/chementator/A-new-route-to-a-cellulose-based-bioplastic_11906.html
July 1, 2014
While super glassy polymers are initially very porous and ultra-permeable — a property that makes them suitable as gas-separation membranes — they quickly pack into a denser phase becoming less porous and permeable. Now, new materials that prevent such aging of these plastics have been developed by researchers from CSIRO Division of Materials Science and Engineering (Melbourne; www.csiro.au)...
http://www.che.com/chementator/A-polymer-for-longer-lasting-membranes_11909.html
July 1, 2014
  Oil-water separation A complex formed by combining maleic anhydride copolymers with a cationic fluorosurfactant can separate oil from water when coated on a wire mesh. Researchers at Durham University (U.K.; www.durham.ac.uk) devised a method of preparing the complex in a single step. This may render it more readily produced at industrial scales compared to previous efforts, the researchers say. In...
http://www.che.com/chementator/July-Chementator-Briefs_11911.html
July 1, 2014
Biosynthetic Technologies (Irvine, Calif.; www.biosynthetic.com) has developed a continuous-flow process to convert any animal- or plant-based fatty acids with high oleic-acid content into synthetic esters that can be used in formulations for motor oils and industrial lubricants. These biosynthetic esters have extremely high oxidative stability, good hydrolytic stability and very low evaporative loss, the...
http://www.che.com/chementator/This-fatty-acid-conversion-process-results-in-synthetic-lubricant-base-oils_11912.html
July 1, 2014
Last month, The Linde Group (Pullach, Germany; www.linde.com) and BASF SE (Ludwigshafen, Germany; www.basf.com) announced plans to cooperate in developing and licensing processes for the on-purpose production of linear butenes and butadiene. BASF has developed process technology and catalysts as well as the extraction technologies, while Linde is providing its expertise for the integration, optimization...
http://www.che.com/chementator/This-on-purpose-butadiene-process-takes-a-step-closer-to-commercialization_11913.html
July 1, 2014
Water scarcity is one of the most serious global challenges of our time. Desalination and water reuse are effective and reliable means to provide new water resources. Among the many methods available to treat water, reverse osmosis (RO) has widely demonstrated superior reliability and cost-effectiveness at removing dissolved species, such as salts and trace contaminants. This article reviews the...
http://www.che.com/chementator/desalination/A-Primer-on-Reverse-Osmosis-Technology_11917.html
June 1, 2014
New Energy and Industrial Technology Development Organization (NEDO; Kawasaki, Japan; www.nedo.go.jp) and Global Water Recycling and Reuse Solution Technology Research Assn. (GWSTA) have developed a new water-treatment system that integrates seawater desalination with recycle water from a sewage treatment plant. In a demonstration unit installed at the Water Plaza Kitakyushu (deveolved to Kitakyushu City...
http://www.che.com/chementator/Reduce-energy-costs-by-combining-wastewater-treatment-and-desalination_11799.html
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