A new greener and cleaner chemical process* could revolutionize the leather-tanning industry, according to a report in the Feb. 15 issue of the American Chemical Society’s journal Environmental Science & Technology. ‘Reverse’ leather tanning, which essentially works backward from the point where conventional tanning ends, saves time, money and energy while drastically slashing water use and pollution, say researchers at the Central Leather Research Institute in Adyar, India.
From pre-tanning to finishing, conventional leather tanning requires about 15 steps, which produce enormous amounts of wastewater and pollutants, including sulfides, chlorides, sulfates and other compounds. The new approach flips the process around and eliminates some of the steps, which results in multiple and substantial production efficiencies, the researchers say.
In the new process, for instance, prior to tanning, the skins are treated with chemicals normally used after tanning is completed. According to the researchers, the reverse process produces leather that is comparable to conventional tanning, but requires 42 percent less time, 54 percent fewer chemicals, 42 percent less energy, 65 percent less water and cuts emissions of key pollutants by up to 79 percent. The results were achieved without changing chemicals or using new ones, the researchers note.
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University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
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20.10.2017 | Interdisciplinary Research