Supercritical fluid extraction/gamma-radiolysis of PCBs from contaminated soil

Authors
Yak, HK Mincher, BJ Chiu, KH Wai, CM
Citation
Hk. Yak et al., Supercritical fluid extraction/gamma-radiolysis of PCBs from contaminated soil, J HAZARD M, 69(2), 1999, pp. 209-216
Citations number
21
Categorie Soggetti
Environmental Engineering & Energy
Journal title
JOURNAL OF HAZARDOUS MATERIALS
ISSN journal
03043894 → ACNP
Volume
69
Issue
2
Year of publication
1999
Pages
209 - 216
Database
ISI
SICI code
0304-3894(19991029)69:2<209:SFEOPF>2.0.ZU;2-3
Abstract
Off-line supercritical fluid extraction (SFE) followed by gamma-radiolysis as an alternative treatment technique for PCB-contaminated soil was investi gated in this study using BZ #53 (2,2',6,6' tetrachlorobiphenyl) as the mod el compound. The preliminary results indicate that removal of BZ #54 from s piked sand and soil using SFE at 150 degrees C and 20 MPa is 98% and 93%, r espectively. The reduction efficiency of 864 mg/l BZ #54 in isooctane by ga mma-radiolysis is 99.8% at an absorbed dose of 500 kGy. (C) 1999 Elsevier S cience B.V. All rights reserved.