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 PDF

Chementator: Decontaminate soil using electrons to make microbe’s meals  

By Edited by Gerald Ondrey |

The Lawrence Berkeley National Laboratory (LBL; Berkeley, Calif.; www.lbl.gov) has developed a new xenobiotics bioremediation system that can be used to treat contaminated soil and water. Whereas conventional bioelectrical remediation methods rely on the addition of chemicals to provide electron donors or acceptors to stimulate the remediative organism’s metabolic process, LBL’s system uses an electrical current to electrolyze the contaminated liquid in a single-chamber bioreactor, producing hydrogen at the cathode and oxygen at the anode (diagram). These gases are then bioavailable to stimulate the activity of microorganisms to biodegrade or biotransform an extensive range of xenobiotics into benign end-products. By eliminating the use of organic electron donors, operating costs are reduced, says LBL. Since there is a separation of the carbon source and the energy source used by the microorganisms, the rate of contaminant removal is separated from the rate of growth of the organisms. This significantly decreases the amount of biomass produced, which is commonly the cause of biofouling and downstream water-quality issues. The process also allows users to control electron donor or acceptor production by adjusting the electrical…
Related Content
Plant Watch: March 2019
Plant Watch Sasol begins operating LLDPE unit at Lake Charles site February 13, 2019 — Sasol Ltd. (Johannesburg, South Africa;…
Chementator Briefs
ANG fueling station Ingevity (North Charleston, S.C.; www.ingevity.com) has completed construction of a fueling station for low-pressure adsorbed natural gas…

Mettler Toledo

Tunable Diode Laser Spectroscopy in Critical Applications

Accurate and continuous O2 determination plays a pivotal role in achieving safety and process reliability in a wide range of manufacturing processes. Harsh process conditions and maintenance requirements of sampling and conditioning systems can present…

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