In an announcement that stunned scientists, the U.S. Environmental Protection Agency has cancelled grant applications for what was supposed to be a $20-million, four-year green chemistry program. The mysterious cancellation comes less than three weeks before the deadline for the proposals. The grants, which were supposed to fund four new centers, would have been a major new source of funding for green chemistry, a field that seeks to design environmentally friendly chemicals and processes that can replace toxic substances. The requests for proposals may be reissued, the EPA said. But the program’s sudden halt and uncertain future — and lack of explanation — have left scientists disheartened. “My reaction is shock that it happened and total dismay that what appeared to be a novel program was cancelled without warning or explanation,” said Eric Beckman, a chemical engineer at the University of Pittsburgh.
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| Joshua Vaughn/flickr |
| Green chemistry’s aim is to design environmentally friendly chemicals and processes that can replace toxic substances currently in use. |
By Brett Israel
Senior Editor and Staff Writer
Environmental Health News
April 10, 2012
In an announcement that stunned scientists, the U.S. Environmental Protection Agency has cancelled grant applications for what was supposed to be a $20-million, four-year green chemistry program.
The mysterious cancellation, announced on Friday, came less than three weeks before the April 25 deadline for the grant proposals.
The federal grants, which were supposed to fund four new academic centers, would have been a major new source of funding for green chemistry, a field that seeks to design environmentally friendly chemicals and processes that can replace toxic substances.
The requests for proposals may be reissued, the EPA said Monday. But the program’s sudden halt and uncertain future – and lack of explanation – have left scientists disheartened. Lab researchers had worked for months on their proposals and scientists now fear their hard work will be wasted.
“My reaction is shock that it happened and total dismay that what appeared to be a novel program was cancelled without warning or explanation,” said Eric Beckman, a chemical engineer at the University of Pittsburgh who was working on a proposal.
Terry Collins, a green chemist at Carnegie Mellon University and a pioneer in the field, said the announcement “stunned me.” Collins was on a team of green chemists and other environmental scientists that had been working for months to put together a funding proposal. West Coast institutions, including University of California, Berkeley, also were developing a proposal.
Beckman said he’d never seen such a thing happen before – a government agency pulling the plug on a request for proposals so close to its deadline – in his more than 20 years in academia.
Eric Beckman, a University of Pittsburgh chemical engineer, said he’d never seen such a thing happen before – a government agency pulling the plug on a request for proposals so close to its deadline – in his more than 20 years in academia.The $20 million in funding would be “one of the most significant sources of dedicated support for green chemistry so it is a blow to the community that the call for applications was cancelled without explanation,” said Evan Beach, a green chemist at Yale University. “Everybody was in the home stretch on writing. The preparations took several months.”
The EPA offered no reason for the last-minute cancellation.









Leather trash turns to medical treasure.
Saturday, April 21st, 2012Synopsis by Wim Thielemans and Audrey Moores, Apr 20, 2012
Catalina, M, J Cot, AM Balu, JC Serrano-Ruiz and R Luque. 2011. Tailor-made biopolymers from leather waste valorisation. Green chemistry http://dx.doi.org/10.1039/c2gc16330f.
A versatile and potentially valuable natural material could be easily collected from the abundant waste produced when leather is made from animal hides, according to researchers from Spain who explain their novel process in the journal Green Chemistry.
Leather processing generates large amounts of remnant hides that are generally thrown away. But this solid waste is rich in a valuable and medically useful protein called collagen. This new method to recycle or reuse the waste alleviates the dumping, produces a necessary product and increases sustainable manufacturing.
Collagen is abundant in mammals and is an important part of muscle, tendons, ligaments, skin, guts, vessels and bone. The resilient, soft and flexible material does not trigger immune reactions, making it a rich resource for medical, cosmetics and veterinary applications. Collagen is used for implants, as sutures and in regenerative medicine – a field of medicine that grows new human cells, tissues or organs for transplant.
The researchers tested different extraction scenarios for their effect on the amount and quality of the collagen. They extracted the protein from two different types of processed cowhides to demonstrate the versatility of the technique.
The hides were cut, treated with acid and ground into a water solution. This process allowed the collagen molecules to dissolve in water. The collagen particles ranged in size from a few nanometers to a few dozen nanometers. Because size matters for collagen applications, the particles were filtered and separated according to their size.
To find the best method, they varied a number of factors, such as temperature, leather pieces, size after grinding, the nature of the acid, stir speed and type of water solution. The optimal results for yield came from an extraction using acetic acid – basically vinegar – for 24 hours at 25oC and a smaller particle size after grinding.
Next, they manipulated the extracted collagen molecules to determine their stability and mechanical properties. In fact, the use of collagen from leather is often limited because of the poor mechanical properties of the recovered collagen. Specifically, collagen must be rigid enough while not swelling too much when exposed to water. Here the researchers found a simple chemical treatment to render the collagen firm and stable.
From this method, they made several different kinds of materials – fibers, sponges, films, threads and gels – with rigidity and swelling in water properties necessary for biomedical applications.
The research is a good example of finding new ways to use a waste material for high value applications. More work will need to be done to compare the properties of these materials with commercial collagens. The next step will be to show the collagen source is reliable and free of contamination.
The above work by Environmental Health News is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.
Based on a work at www.environmentalhealthnews.org.
Tags: biofeedstocks, biomedical, GREEN CHEMISTRY, replacements
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