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1

Remediation of soils contaminated with trichloroethylene

Albergaria J. T., Alvim-Ferraz M. C. M., Delerue-Matos C. M.

Environmental Biotechnology

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2010

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Vol. 6, No. 2

37-41

EN

Soil contamination is a common problem in our society. Several activities introduce contaminants in soils affecting their quality and future utilization. In order to invert this situation and to avoid further spreading of the contaminant several remediation technologies could be used. For soils contaminated with trichloroethylene (TCE), Soil Vapor Extraction (SVE) can be an efficient remediation technology. It involves the application of vacuum to the soil matrix creating an airflow that conduce the volatized contaminant to extraction wells that lead them to the exterior of the soil where they are properly treated. This work presents the results obtained in the soil vapor experiments performed in a laboratory using soils with different water contents contaminated with TCE. These experiments aimed the study of the influence of soil water content and the airflow used in the remediation time and on the process efficiency. The results showed that in sandy soils contaminated with TCE: a) for similar levels of contamination, the increase of the soil water content from 0 to 4% created an increase of the concentration of TCE in the gas phase of the soil, in some cases by almost 50%; b) the influence of water content is not significant being overlapped by influence of the airflow rate; c) SVE performed with higher airflow rates had shorter remediation times (in some cases four times shorter) without any significant impact on the process efficiencies (fluctuations of 1 to 3%); and d) for the experimented soils, the utilization of higher airflow rates led to shorter and consequently cheaper remediation.

2

Własności palne trichloroetylenu

Głowiński J., Baczyńska T., Seweryniak M., Maciszewski L.

Bezpieczeństwo Pracy : nauka i praktyka

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2003

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nr 2

25-27

PL

W artykule dokonano oceny własności palnych i wybuchowych trichloroetylenu według różnych źródeł literaturowych i unormowań prawnych. Wykonano pomiary temperatury zapłonu w tyglu zamkniętym według obowiązującej normy PN-EN 22719 (2000). Stwierdzono doświadczalnie, że TRI nie zapala się w warunkach opisanych w normie. Przeprowadzane badania i analiza wskazują na nieprawidłowość klasyfikowania urządzeń i osprzętu elektrycznego stosowanego w obecności TRI do grupy IIA.

EN

Estimation of flammable properties of trichlorethylene according to different literature sources has been given. Measurements of the ignition temperature in a closed cup under the obligatory standard PN-EN 22719 (2000) have been carried out. It has been experimentally proved that TRI does not ignite in conditions described in the obligatory standard. Experimental results and analysis have shown it is not correct to include in group IIA electrical devices and equipment used in the presence of trichlorethylene.

3

Badanie szerokości obszaru metastabilnego roztworów wzrostowych fluorantenu w trichloroetylenie

Kończyk J., Balińska A., Marciniak B.

Prace Naukowe. Chemia / Wyższa Szkoła Pedagogiczna w Częstochowie

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2001

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Vol. 5

47--56

4

Simple and rapid method for the determination of methylene chloride, ethylene dichloride, trichloroethylene and tetrachloroethylene in atmospheric air

Bartulewicz J., Bartulewicz E., Gawłowski J., Niedzielski J.

Chemia Analityczna

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1998

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Vol. 43, No. 5

887-895

EN

A simple, rapid and inexpensive method for the determination of methylene chloride, ethylene dichloride, trichloethylene and tetrachloethylene in atmospheric air is described. The target compounds are sorbed on activated charcoal and desorbed with p-xylene. Recoveries amount to 95%. The extracts are analyzed by gaz chromatography with electron capture detection. Determination limits are much lower than permissible exposure limits developed in Poland.

PL

Opisano prostą, szybką i tanią metodę oznaczania chlorku metylenu, chlorku etylenu, trichloroetylenu i tetrachloetylenu w powietrzu atmosferycznym. Związki te sorbowane na węglu aktywnym, po czym desorbowane p-ksylenem. Odzysk wynosi 95%. Do analizy ekstraktów zastosowano chromatografię gazową z detektorem wychwytu elektronów. Granice oznaczalności są znacznie niższe od stężeń dopuszczalnych w Polsce.