Related Experiment Video
Updated: Oct 9, 2026

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
Published on: June 21, 2015
Remediation of a nonachloro biphenyl congener with zero-valent iron in subcritical water
D C Hinz1, C M Wai, B W Wenclawiak
1Universität-GH Siegen, Analytische Chemie I, Germany.
Abstract:
Dechlorination of a nonachloro biphenyl congener with zero-valent iron in water under high temperature and pressure was investigated over time. Temperature has the main influence on the speed of dechlorination. Determination of polychlorinated biphenyls (PCBs) according to the grade of chlorination was performed by gas chromatography with mass selective detection in single ion monitoring mode. Dechlorination results in a variety of lower chlorinated biphenyls. The level of chlorination decreases with time. The amount of PCB molecules decreases to one-third within 90 min at 250 degrees C and 100 atm. However, no increase of biphenyl could be detected over time. A first-order kinetic model fitted the data obtained.
Related Concept Videos
Electrophilic Aromatic Substitution: Chlorination and Bromination of Benzene
Microbial Leaching
Radical Substitution: Hydrogenolysis of Alkyl Halides with Tributyltin Hydride
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...
Extraction: Advanced Methods
Microbial Bioremediation of Pesticides
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

