Loading...
Please wait, while we are loading the content...
Similar Documents
Degradation of Chlorinated Cyclohexanes (lindane) by Zero-valent Iron Nanoparticles (nzvi)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lacinová, Lenka Černík, Miroslav Šourková, Hana |
| Copyright Year | 2013 |
| Abstract | Lindane (γ-isomer of chlorinated cyclohexane) has been widely used as a pesticide in the second half of the 20th century. Even though its use has recently been banned, there are globally important sources of this contaminant and its isomers, acting nervous disorders and potential carcinogens. On the spoil heap Hajek (Czech R.) about 5,000 tons of chlorinated isomers of cyclohexane (mainly δ-HCH) was disposed.The contaminants are gradually released into water. Final concentration of HCH and accompanying chlorobenzenes is between 100-200 µg/l compares to the maximum average permissible value 0.02 µg/l. Degradation of HCH was investigated using zero-valent iron nanoparticles (nZVI). Tests were carried out to determine the dependence of HCH and CB degradation on different ZVI types, on different nZVI concentration and to determine reaction kinetics. The results show that efficiency of HCH and CB degradation is the best for nZVI and sufficient nZVI concentration is about 0.5 g/l. The different isomers are degraded with different rate and efficiency in the order α ≈ γ> β> δ> e. The method was compared with chemical oxidation and adsorption. Conventional oxidation methods have very low efficiency. Best sorption was determined for activated carbon and peat. Based on the results a pilot application on the location will be carried out. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://konsys-t.tanger.cz/files/proceedings/14/reports/2122.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
