Selenium oxidation and removal by ion exchange

Technical Report · Fri Feb 28 23:00:00 EST 1986

OSTI ID:5592875

Boegel, J V; Clifford, D A

Strong-base anion exchange was evaluated as a process for the removal of trace quantities of selenium from groundwater. The efficiency of the process was found to be dependent on the oxidation state of selenium, with the selenate anion (Se(VI)) having a greater affinity for the anion-exchange resin than selenite or biselenite anions (Se(IV)). An analytical method was developed to measure the concentrations of Se(IV) and Se(VI) (i.e., to determine the speciation of selenium) at trace concentrations in groundwater. The oxidation of Se(IV) to Se(VI) at trace concentration in groundwater was studied with this new analytical method.

• Research Organization: Houston Univ., TX (USA). Dept. of Civil Engineering
• OSTI ID: 5592875
• Report Number(s): PB-86-171428/XAB
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
CHEMICAL REACTIONS
CHLORINE
CONTROL
ELEMENTS
GROUND WATER
HALOGENS
HYDROGEN COMPOUNDS
NONMETALS
OXIDATION
OXYGEN COMPOUNDS
POLLUTION CONTROL
REMOVAL
SELENIUM
SEMIMETALS
SORPTION
TRACE AMOUNTS
WATER