Oxidation of Pentachlorophenol in Manganese Oxide Suspensions Under Controlled Eh and pH Environments

Authors

R. A. Petrie
P. R. Grossl
Ronald C. Sims, Utah State UniversityFollow

Document Type

Article

Journal/Book Title

Environmental Science and Technology

Publication Date

2002

Volume

36

Abstract

Abiotic oxidation of pentachlorophenol (PCP) by manganese(IV) oxide (MnO₂) was examined in order to understand the physiochemical environment(s) where PCP oxidation occurs. An E_h−pH potentiostat was used to simulate natural groundwater environments where MnO₂ (0.025 g L^-1) and PCP (0.020 g L^-1) suspensions were incubated from E_h −300 to 300 mV and pH 4.5 to 7.0. The pH−E_h region where maximum PCP sorption occurred corresponded to the same region where the greatest concentrations of soluble Mn(II) where measured (E_h > −100 mV and pH 2 surface. A greater transformation of PCP to primarily tetrachloro-1,4-benzoquinone (p-chloranil) and smaller amounts of lesser chlorinated phenols occurred under increasing pH and E_h conditions.

Comments

Originally published by American Chemical Society. Publisher’s PDF and HTML fulltext available through remote link. May require fee or subscription.

Recommended Citation

Petrie, R. A.; Grossl, P. R.; and Sims, Ronald C., "Oxidation of Pentachlorophenol in Manganese Oxide Suspensions Under Controlled Eh and pH Environments" (2002). Biological Engineering Faculty Publications. Paper 16.
https://digitalcommons.usu.edu/bioeng_facpub/16