Abstract

TORNERO JIMENEZ, Rafael J  and  VALDEZ CASTRO, Sulema N. Adsorption and inertization of polychlorinated biphenyls (PCBs) on ulexite, in the management process of dielectric oils. Rev. Bol. Quim [online]. 2020, vol.37, n.4, pp.194-201. ISSN 0250-5460.

Abstract The dielectric oils used in the last century in electrical transformers and capacitors are substances that contain PCBs (polychlorinated biphenyls). The exposure and contact of the human being with these substances, PCBs, through air, water and soil carries the risk of the appearance of cancer, which is why their identification, treatment, isolation and / or inerting is of vital importance for the environment and human health. This study proposes the adsorption and inertization of PCBs as dielectric oil management processes using solids as adsorbent supports. This basically includes going from a liquid oil (little manipulable) to a “solid” (oil adsorbed on a support). As a result of this study, ulexite was used as a support. Subsequently, this solid was coated with calcium carbonate for the inerting of PCBs from the dielectric oil, thus limiting its interaction or reaction with the environment and humans. The final product is thus ready for storage by encapsulation with concrete while having access to the technology to incinerate dielectric oils with PCBs.

Keywords : Polychlorinated biphenyls; Adsorption; Inertization; Management processes.

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