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REVISTA DE CHIMIE
Cite as: Rev. Chim.
https://doi.org/10.37358/Rev.Chim.1949

OSIM Nr. R102355
ISSN Print 0034-7752
ISSN Online 2668-8212
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Revista de Chimie (Rev. Chim.), Year 2014, Volume 65, Issue 1,





Diana Mariana Cocarta, Irina Aura Istrate*, Cora BulmAu, Ramona DINU, Vladimir Tanasiev, Cristina Dumitrescu
Different Methods for Polychlorinated Biphenyls Removal from Contaminated Soils

Abstract:

The paper presents results of laboratory experiments focused on the efficiency of polychlorinated biphenyls (PCBs) removal by electroremediation, pyrolysis and incineration decontamination methods. The experiments were carried out using soil contaminated with heavy metals and PCBs. Different process parameters were changed during the experiments in order to achieve maximum removal efficiency. Concerning the thermal methods (pyrolysis and incineration), the operating temperature and retention time were the two key parameters affecting the processes that were assessed. With regards to the electroremediation alternative for soil decontamination, the redox potential (ORP), pH, electric field and temperature were continuously monitored. Results showed that thermal treatments are the most indicated methods for removing PCBs from contaminated soils. Pyrolysis and incineration remediation methods ensured, with some exceptions, an efficiency of over 99%. The same efficiency level was attended just in case of applying the electrochemical method for removing PCB126. Keywords: soil pollution, polychlorinated biphenyls, incineration, pyrolysis, electrokinetic remediation

Issue: 2014, Volume 65, Issue 1
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