Enhanced electrokinetic dissolution of naphthalene and 2,4-DNT from contaminated soils
Jiradecha, C; Urgun-Demirtas, M; Pagilla, K
| HERO ID | 662328 |
|---|---|
| In Press | No |
| Year | 2006 |
| Title | Enhanced electrokinetic dissolution of naphthalene and 2,4-DNT from contaminated soils |
| Authors | Jiradecha, C; Urgun-Demirtas, M; Pagilla, K |
| Journal | Journal of Hazardous Materials |
| Volume | 136 |
| Issue | 1 |
| Page Numbers | 61-67 |
| Abstract | Electrokinetic soil remediation has been proven to remove heavy metals and polar organics from low hydraulic conductivity subsurface environment. In this study, carboxymethyl-beta-cyclodextrin (CMCD) was used as a carrier to assist electrokinetic treatment for removal of low polarity organic contaminants from soils (2.2% organic carbon content). Naphthalene and 2,4-dinitrotoluene (2,4-DNT) were selected as the test compounds. The results from columns experiments showed that 46 and 43% of naphthalene and 2,4-DNT, respectively, were removed using 0.01 N NaNO(3) flushing solution with 40 V electrical potential while 70 and 72% of naphthalene and 2,4-DNT were removed using 2 g/L CMCD solution. Naphthalene and 2,4-DNT removal was enhanced to 83 and 89%, respectively, by using 2 g/L CMCD with 40 V electrical potential. Findings from this study also demonstrated that cyclodextrin assisted electrokinetics can enhance the removal rate of naphthalene and 2,4-DNT. Electric potential applied has more influence on the contaminant removal than the amount of CMCD used. Higher voltage application caused increase in the removal rate of naphthalene and 2,4-DNT, and appeared to be one of the critical factors in obtaining higher contaminant removal while increasing CMCD solution concentration above 2 g/L appeared to have little effect on the contaminant removal. |
| Doi | 10.1016/j.jhazmat.2005.11.01 |
| Pmid | 16359784 |
| Wosid | WOS:000238931000007 |
| Url | https://linkinghub.elsevier.com/retrieve/pii/S0304389405007004 |
| Is Certified Translation | No |
| Dupe Override | No |
| Conference Location | Mykonos Isl, GREECE |
| Conference Name | 7th International Conference on Protection and Restoration of the Environment |
| Is Public | Yes |
| Language Text | English |
| Keyword | Dinitrobenzenes/ chemistry/ isolation & purification; Electrochemistry; Kinetics; Naphthalenes/ chemistry/ isolation & purification; Soil Pollutants/ isolation & purification; Solutions; beta-Cyclodextrins/chemistry |
| Is Qa | No |