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An effective graphene-based desalination membrane

Researchers from Oak Ridge National Laboratory (ORNL; Oak Ridge, Tenn.; www.ornl.gov) have demonstrated an efficient desalination process using a porous graphene-based desalination membrane. While the thinness of the freestanding graphene (roughly 0.3 nm) allows for significantly higher flux than traditional…

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April Chementator Briefs

Nanocellulose pilot Sappi Ltd. (Johannesburg; South Africa; www.sappi.com) will build a pilot-scale plant for low-cost nanocellulose (Cellulose NanoFibrils; CNF) production at the Brightlands Chemelot Campus (Sittard-Geleen, the Netherlands; www.brightlands.com). The pilot plant will test the manufacturing of dry re-dispersible CNF…

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A patented process makes stabilized proteins

XstalBio Ltd. (Glasgow, U.K.; www.xstalbio.com) has recently been issued a patent (US 8,932,715) covering the use of precipitation-stabilizing additives for the manufacture of dry powders of therapeutic proteins, including monoclonal antibodies (mAbs). Compared to lyophilization, the XstalBio precipitation process offers…

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Scaleup for an alternative route to PC monomer

Earlier this year, Asahi Kasei Chemicals Corp. (Tokyo, Japan; www.asahi-kasei.co.jp/chemicals) has developed a new process for making diphenyl carbonate (DPC), a monomer used for making polycarbonate (PC) resins. This new route to DPC uses only an alcohol, phenol and CO2…

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Commercial-scale production for bio-based levulinic acid

This summer, GFBiochemicals Green Future S.r.l. (Milan, Italy; www.gfbiochemicals.com) will start commercial-scale production of bio-based levulinic acid using its proprietary, continuous-production process. The company says it will produce 2,000 metric tons per year (m.t./yr) at its plant in Caserta, Italy…

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Lignin to adipic acid

A new study from the National Renewable Energy Laboratory (NREL; Golden, Colo.; www.nrel.gov) demonstrates the conversion of lignin-derived compounds to adipic acid, an important precursor for making nylon and other chemicals. The new route offers a “greener” alternative to conventional…

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Biomass pretreatment approach can reduce enzyme requirements

Biomass is a recalcitrant, heterogeneous matrix of cellulose, hemicellulose and lignin that resists microbial and enzymatic breakdown. Overcoming this recalcitrance is the major economic barrier to the conversion of biomass to sugars or other chemicals. Heat, acid and other chemicals…

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Making fuels from almost any organic material

Adgex Ltd. (Sydney, Australia; www.adgex.com) is marketing a plant, tradenamed “Green Blaze,” for processing organic raw materials by means of high-speed ablative pyrolysis. According to the company, the plant (flowsheet) can be adapted to convert into synthetic fuel almost any…

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End-to-end demonstration of CO2-to-ethanol process achieved

Joule Unlimited (Bedford, Mass.; www.jouleunlimited.com) announced recently that it has achieved end-to-end production of ethanol from carbon dioxide and sunlight (CO2-to-ethanol), using its specially designed photobioreactor and engineered cyanobacteria. The full production runs occurred late last year at the company’s…

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Modified MOFs could cut carbon-capture costs in half

Chemists from the University of California, Berkeley (UC Berkeley; www.berkeley.edu) have modified a metal-organic framework (MOF) compound with diamines, which enables the material to be tuned to absorb CO2 at different temperatures, such as from air at room temperature, or…