Archives :: Chementator

Displaying 1 - 20 of 950 stories.
September 1, 2014
Crystal Solar Inc. (Santa Clara, Calif.; www.xstalsolar.com) is preparing for high-volume production of silicon wafers using a process that forms the wafers directly from trichlorosilane (TCS) gas using a chemical vapor deposition (CVD) epitaxy process that can significantly lower the manufacturing costs for solar photovoltaic cells. By eliminating several steps used in the traditional solar-wafer...
http://www.chemengonline.com/chementator/This-process-realizes-large-costs-savings-for-manufacturing-silicon-wafers_12091.html
September 1, 2014
Edeniq Inc. (Visalia, Calif.; www.edeniq.com) announced progress in building demonstration facilities in Brazil and China that feature the company’s proprietary process for converting cellulosic biomass into industrial sugar for fermentation or catalytic conversion (diagram). In Brazil’s São Paulo state, Edeniq is partnering with Usina Vale to build a 10-ton/d demonstration plant that...
http://www.chemengonline.com/chementator/Demonstration-plants-for-biomass-to-sugar-technology-under-construction_12092.html
September 1, 2014
  CO2-to-syngas . . . Scientists from the University of Illinois at Chicago ( www.uic.edu) have developed a catalytic system — molybdenum disulfide and an ionic liquid — to convert CO2 into synthesis gas, (syngas; a mixture of CO and H2 that is used for making liquid fuels and chemicals, such as methanol). Unlike alternative CO2-reduction processes, which only generate CO, the new catalyst...
http://www.chemengonline.com/chementator/September-Chementator-Briefs_12093.html
September 1, 2014
A microfluidic, paper-based analytical device (µPAD) — in conjunction with confirmation by a “lab-on-a-chip” analysis — was developed for detection of three explosives (trinitro aromatics) by a team from the University of Technology Sydney (Sydney, Australia; www.uts.edu.au), the University of Lausanne (Switzerland; www.unil.ch), and Florida International University (Miami...
http://www.chemengonline.com/chementator/An-inexpensive-sensitive-device-for-detecting-explosives_12094.html
September 1, 2014
An ultra-sensitive, low-cost and portable system for detecting mercury in water has been developed by University of Adelaide (Australia; www.adelaide.edu.au) researchers, in collaboration with the Universitat Rovira i Virgili (Tarragona, Catalonia, Spain; www.urv.cat). Project leader Abel Santos, of the Adelaide’s School of Chemical Engineering, says there are systems capable...
http://www.chemengonline.com/chementator/This-portable-device-measures-Hg+2-in-water-samples_12095.html
September 1, 2014
JX Nippon Oil & Energy Corp. (JX_NOE; Tokyo, Japan; www.noe.jx-group.co.jp) plans to construct the first commercial plant to utilize its high-severity fluid catalytic cracking (HS-FCC) technology, which has been demonstrated to generate higher ethylene and propylene yields compared to conventional FCC technology. The new plant, which could start operating as early as 2018 at the company’s Kashima...
http://www.chemengonline.com/chementator/Commercial-debut-planned-for-an-FCC-process-with-enhanced-olefins-production_12096.html
September 1, 2014
Last June, Showa Denko K.K. (SDK; Tokyo, Japan; www.sdk.co.jp) started commercial operation of its new 100,000-ton/yr ethyl acetate plant at Oita Complex. The new plant is the first commercial facility in Japan to use the company’s proprietary production-process technology. The process technology was first demonstrated...
http://www.chemengonline.com/chementator/A-more-direct-route-to-ethyl-acetate_12099.html
September 1, 2014
A sludge-optimization technology for municipal water-treatment facilities is poised for rapid growth after the exclusive worldwide patent-licensing rights for the technology were acquired by CNP Technology Water and Biosolids Corp. (Kenosha, Wisc.; www.cnp-tec.com). The technology, known as AirPrex, was initially developed at Berlin Water Works (Germany) in 2004, and was initially licensed to the German...
http://www.chemengonline.com/chementator/Municipal-water-sludge-optimization-technology-poised-for-growth_12100.html
September 1, 2014
The first commercial contract delivery was recently made for an emissions control product that removes mercury from fluegas without the use of activated carbon. The product, known as AS-HgX, is made by Novinda Corp. (Denver, Colo.; www.novinda.com), and will be used in the utility power-generation industry to help users meet limits on mercury emissions. The product is a departure from the use of activated...
http://www.chemengonline.com/chementator/Mercury-removal-with-modified-aluminosilicate-clay_12102.html
September 1, 2014
The presence of scale depositions in pipelines can restrict flow, limit heat transfer and decrease efficiency. The ability to monitor pipelines for depositions helps avoid issues and optimize costs. The Deposition Watch system from Flowrox Inc. (Linthicum, Md; www.flowrox.us) presents a realtime, online predictive-monitoring solution for detecting scale-related issues in process...
http://www.chemengonline.com/chementator/Monitoring-pipeline-deposits-in-realtime_12103.html
September 1, 2014
Water and wastewater treatment are extremely important at liquefied natural gas (LNG) facilities and other industries that are blossoming due to the shale-gas boom. Engineering concerns are similar to those of other industrial water-treatment and power-generation systems, but with the added issue of adequate treatment for entrained hydrocarbons. With proper system design and operation, plant personnel can...
http://www.chemengonline.com/chementator/natural_gas/Modern-Water-Treatment-Challenges_12133.html
September 1, 2014
Operators and engineers in the chemical process industries (CPI) who are responsible for the daily operations associated with sludge dewatering and drying equipment are undoubtedly aware that wastewater-sludge drying is not an easy task. A large number of the problems that arise during these operations are due to the sticky phase of sludge, which makes the drying of sludge as much an art as a science...
http://www.chemengonline.com/chementator/waste_and_recycling/Challenges-of-Drying-Sticky-Wastewater-Sludge_12124.html
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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.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.chemengonline.com/chementator/A-two-step-process-for-making-graphene_12005.html
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