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June 1, 2011
Japan Atomic Energy Agency (JAEA; Ibaraki, www.jaea.go.jp) has enhanced the efficiency of a solvent-extraction process to separate organic solvents from water contaminated by radioactive waste. JAEA was able to reduce the toluene concentration from 5,000 parts per million (ppm) to below 10 ppm, which is below the...
http://www.chemengonline.com/chementator/Improved-solvent-extraction-for-nuclear-waste-contaminated-water_8094.html
June 1, 2011
A system that utilizes existing biological wastewater-treatment facilities for destruction of biodegradable volatile organic compounds (VOCs) and other organic hazardous air pollutants (HAPs) has been demonstrated at three U.S. petroleum-refining and chemical facilities, and the developer has plans to extend the U.S. patent-pending treatment approach to eight additional facilities in coming months. Environ...
http://www.chemengonline.com/chementator/Biodegradation-system-for-VOCs-poised-for-expansion_8096.html
June 1, 2011
Mitsubishi Heavy Industries Ltd. (MHI; Tokyo, www.mhi.co.jp) says it has established technology to produce bioethanol for automobile use by using soft-cellulose, such as wheat straw and rice straw, as raw materials. MHI estimates the fuel cost for a full-scale production plant — accounting for the costs of feed material and its collection and transportation, as well as bioethanol production costs...
http://www.chemengonline.com/chementator/Low-cost-process-for-bioethanol-fuel-demonstrated-in-Japan_8097.html
June 1, 2011
A novel method for treating industrial liquid waste employs supercritical water infused with oxygen to destroy organic compounds. Developed by Innoveox (Paris; www.innoveox.com) and based on technology patented by the French government research organization CNRS (www.cnrs.fr), supercritical water oxidation (SCWO) offers a lower-cost, environmentally friendly alternative to traditional waste-treatment...
http://www.chemengonline.com/chementator/Supercritical-water-oxidation-for-organic-waste-treatment_8100.html
June 1, 2011
A team from CSIRO Materials Science and Engineering (Melbourne, Australia; www.csiro.au) has developed a new technique for growing smart materials known as metal-organic frameworks (MOFs), which can be used in pollution control, or as catalysts, or for transporting drugs in the human body. MOFs are well-ordered ultra-porous crystals that form multi-dimensional structures with huge surface areas. One gram...
http://www.chemengonline.com/chementator/A-new-way-to-grow-functional-MOFs_8101.html
June 1, 2011
Last month, construction was completed on the world’s first commercial plant to produce a next-generation solid fuel, called Bio-cokes, at Takatsuki, Japan. The renewable material is produced from forest residues and can be used as an alternative to coal-based coke in blast furnaces and...
http://www.chemengonline.com/chementator/Commercial-production-of-Bio-cokes_8102.html
June 1, 2011
A team led by Rice University (Houston; www.rice.edu) researcher Michael Deem has assembled a database of 2.6 million possible unique zeolites — porous silicate minerals often used as catalysts or molecular sieves. The database of potential structures...
http://www.chemengonline.com/chementator/A-comprehensive-zeolite-database_8105.html
May 1, 2011
A freeze-drying system recently commercialized by ULVAC, Inc. (Chigasaki, Japan; www.ulvac.co.jp) produces spherical particles by spraying a solution into a vacuum chamber. The approach has numerous advantages over conventional freeze-drying, and can be used for generating dry powders in the pharmaceutical, food and electronics industries. The system works by spraying a solution through a specialized...
http://www.chemengonline.com/chementator/Freeze-drying-based-on-fine-spray-produces-uniform-microspheres_7927.html
May 1, 2011
By immobilizing carbon nanotubes (CNTs) within polymer membrane pores, scientists at the New Jersey Institute of Technology (NJIT; Newark, N.J.; www.njit.edu) were able to significantly improve the efficiency of desalination via a membrane distillation process. Somenath Mitra and colleagues at NJIT used a vacuum to force a dispersion of CNTs into the pore network of commercially available polymer...
http://www.chemengonline.com/chementator/CNT-enhanced-membranes-show-promise-for-desalination-method_7928.html
May 1, 2011
Spider silk has many unique properties that make it suitable for applications such as coatings and medical products. As a protein, the silk is remarkably stable and is only destroyed physically or digested and recycled by the spider. However, an industrially viable synthetic route to spider silk has eluded researchers over the last 25 years, says Axel Leimer, managing director at AMSilk GmbH...
http://www.chemengonline.com/chementator/A-step-closer-to-commercial-production-of-spider-silk_7929.html
May 1, 2011
Ammonia borane’s (AB) capacity to contain and easily release large amounts of hydrogen has made it an attractive candidate to store the gas for onboard fuel-cell powered vehicles. A major technological hurdle that remains is how to reintroduce hydrogen to spent AB in an energy-efficient way. Now, a team comprised of researchers from Los Alamos National Laboratory (Los Alamos, N.M.; www.lanl.gov) and...
http://www.chemengonline.com/chementator/One-pot-ammonia-borane-recharging-could-boost-fuel-cell-vehicles_7930.html
May 1, 2011
Last month, Carpenter Technology Corp. (Wyomissing, Pa.; www.cartech.com) licensed an alumina-forming austenitic stainless-steel alloy developed at the U.S. Dept. of Energys Oak Ridge National Laboratory (ORNL; Tenn.; www.ornl.gov). The new...
http://www.chemengonline.com/chementator/A-new-high-temperature-alloy_7931.html
May 1, 2011
An Australian team including CSIRO (Melbourne; www.csiro.au) and the Uni- versity of Newcastle (www.newcastle.edu.au) has developed an alternative pathway for producing ultra-low-ash coal that, the team believes, can be used to fuel diesel engines, thus providing the opportunity for diesel engines to replace steam engines for large-scale base-load power generation. The method involves slurrying and...
http://www.chemengonline.com/chementator/Coal-slurry-as-a-substitute-for-diesel-fuel_7932.html
May 1, 2011
Scientists from the National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba, Japan; www.aist.go.jp), in collaboration with Tokyo University of Science and Panchakot Mahavidyalaya University, have demonstrated that a nickel-complex-type organic nanotube (Ni-ONT), developed by AIST, can catalyze oxidation reactions for producing industrial chemicals. For example, the researchers have...
http://www.chemengonline.com/chementator/A-renewable-green-oxidation-catalyst_7933.html
May 1, 2011
Last month, PJI Contract Pte Ltd. (Singapore; www.pjicon.com.sg) opened a production facility for the manufacture of titanium dioxide solution — a self-cleaning, nanocoating material developed at Singapore Institute of Manufacturing Technology (SIMTech; www.simtech.a-star.edu.sg), a research institute of the Agency for Science, Technology...
http://www.chemengonline.com/chementator/Commercial-production-for-a-self-cleaning-coating_7934.html
May 1, 2011
A solar cell made of carbon nanotube (CNT) fiber has been demonstrated by researchers from Fudan University (Shanghai; www.fudan.edu.cn). University professor Huisheng Peng says, “For the fibers we use, the carbon nanotubes exhibit a high degree of alignment with much improved mechanical and electrical properties. Therefore those fibers greatly enhance the short current density, open voltage, and the...
http://www.chemengonline.com/chementator/Solar-cells-made-of-carbon-nanotubes_7935.html
May 1, 2011
After a nine-month field demonstration at BTX, Inc.’s Sleepy well site in Indiana, Pa., Altela Inc.’s (Albuquerque, N.M.; www.altelainc.com) AltelaRain 4000 water desalination system has been shown to turn Marcellus Shale wastewater into distilled water. The demonstration, funded by the U.S. Dept. Of Energy’s National Energy Technology Laboratory (NETL; Pittsburgh, Pa.; www.netl.doe.gov)...
http://www.chemengonline.com/chementator/Desalination-without-pressure-or-membranes_7936.html
May 1, 2011
  Wastewater reuse Aqua-Chem Inc. (Knoxville, Tenn.; www.aqua-chem.com) has developed a filtration-based process for purifying wastewater from large-scale carpet manufacturing. The process effectively removes dyes and other additives from wastewater to reduce concentrations from around 800 ppm to less than 30 ppm. A recent pilot with a U.S.-based carpet manufacturer demonstrated that 70% of wastewater...
http://www.chemengonline.com/chementator/May-Chementator-Briefs_7937.html
April 1, 2011
Engineers at Algaeventure Systems (Marysville, Ohio; www.algaevs.com) have developed a system for separating liquids from solids and semisolids at very low energies. Originally targeted at harvesting and dewatering microalgae where the technology could remove a major cost barrier, the separation system can be used for a host of applications, including drying food-waste effluent, coal fines, hog manure...
http://www.chemengonline.com/chementator/A-low-energy-belt-based-solid-liquid-separation-technology_7732.html
April 1, 2011
Electricity generation of 240 kW has been demonstrated in a Brayton-cycle system that uses supercritical carbon dioxide as the working fluid. Developed by researchers at Sandia National Laboratory (Albuquerque, N.M.; www.sandia.gov) and built by Barber Nichols Inc. (Arvada, Colo.; www.barber-nichols.com), the prototype power-generation system, when scaled up, offers several advantages over steam-Rankine...
http://www.chemengonline.com/chementator/Supercritical-CO2-Brayton-cycle-system-packs-efficiency-into-small-footprint_7733.html
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