I D
× COMMENTARY
Digitalization Game ChangersGame Changers
The technologies associated with the Industrial Internet of Things, and…
COVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILESOLIDS PROCESSINGEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment Water Treatment

Biologically inspired denitrification catalyst

By Tetsuo Satoh |

The development of denitrification catalysts that can reduce nitrate and nitrite to N2 is critical for sustaining the nitrogen cycle. However, regulating the catalytic selectivity has proven to be a challenge, due to the difficulty of controlling complex multi-electron/proton reactions. Now, Ryuhei Nakamura and coworkers at Riken (Wako City, Japan; www.riken.jp) have developed an artificial catalyst that imitates the denitrification enzyme of microorganisms, and succeeded in converting nitrite ions efficiently into harmless N2. The researchers focused on the microorganisms that perform multi-step reactions under mild conditions using four enzymes that contain metals, such as Fe, Cu and Mo as the active center of the enzyme. They found that the catalyst composed of the enzyme containing Mo as the active center of the enzyme in the shape of a pterin-like structure, coordinated with the oxygen and sulfur, efficiently detoxifies the nitrite ions into N2 under mild conditions and without using a large-scale drainage treatment installation. Using a hydrothermal synthesis method, they fabricated the catalyst with the pterin-like structure and confirmed that this catalyst contained a MoS4 structure similar to the active site of the enzyme. They…
Related Content
A catalyst that mimics enzymes
A research team from the University of New South Wales (Sydney, Australia; www.unsw.edu.au) and Ruhr-Universität Bochum (Bochum, Germany; www.ruhr-universität-bochum.de) has…

Mettler Toledo

Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis

Changing to GPro® 500 in situ TDL sensors has reduced measurement time from 20 seconds to 2, and almost eliminated analyzer maintenance.

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Reduce Explosion Risk in 2 Seconds with In Situ Oxygen Analysis
Tunable Diode Laser Spectroscopy in Critical Applications
Non-Contacting Gas Sensors Minimize the Risk of Corrosion to Plant Equipment.
5 ways to Optimize Production of Polymers and Intermediate Petrochemicals
7 Ways to Achieve Process Safety in Chemical Production

View More

Live chat by BoldChat