In:
Canadian Geotechnical Journal, Canadian Science Publishing, Vol. 38, No. 6 ( 2001-12-01), p. 1329-1334
Abstract:
The effectiveness of four food-grade and two industrial surfactants to remove toluene or 1,2,4-trichlorobenzene added to an Iowa soil was evaluated in batch and column experiments. One of the anionic food-grade surfactants, disodium n-hexadecyl diphenyloxide disulfonate (Dowfax 8390), was more effective than the other surfactants in shaken batch experiments. The maximum recoveries of the added toluene (57%) or 1,2,4-trichlorobenzene (71%) were obtained with one surfactant wash plus two water rinses. Dowfax 8390 also yielded the highest recovery of toluene (75%) or 1,2,4-trichlorobenzene (83%) in columns of soil flushed with 1250 mL of 4% surfactant solutions. Synergism in a mixture of 2% Dowfax 8390 (anionic) and 2% T-Maz 60 (nonionic) did not occur, in contrast to enhanced recoveries exhibited by a similar mixture of the two industrial surfactants, Sandopan JA36 (anionic) and Pluronic L44 (nonionic).Key words: surfactants, toluene, 1,2,4-trichlorobenzene, recoveries, synergism.
Type of Medium:
Online Resource
ISSN:
0008-3674
,
1208-6010
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
2001
detail.hit.zdb_id:
1482247-7
