FERREIRA, RAFAEL V.P.SAKATA, SOLANGE K.BORBA, TANIA R.BELLINI, MARIA H.DUTRA, FERNANDOMARUMO, JULIO T.2014-11-172014-11-182015-04-022014-11-172014-11-182015-04-02FERREIRA, RAFAEL V.P.; SAKATA, SOLANGE K.; BORBA, TANIA R.; BELLINI, MARIA H.; DUTRA, FERNANDO; MARUMO, JULIO T. Biodegradation of ethyl acetate in radioactive liquid organic waste by bacterial communities. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE; MEETING ON NUCLEAR APPLICATIONS, 9th; MEETING ON REACTOR PHYSICS AND THERMAL HYDRAULICS, 16th; MEETING ON NUCLEAR INDUSTRY, 1st, September 27 - October 2, 2009, Rio de Janeiro, RJ. <b>Proceedings...</b> Disponível em: http://repositorio.ipen.br/handle/123456789/16510.http://repositorio.ipen.br/handle/123456789/16510The research and development program in reprocessing of low burn-up spent fuel elements began in Brazil in 70’s, originating the lab -scale hot cell, known as CELESTE located at IPEN-CNEN/SP. The program was ended at the beginning of 90’s and part of the radioactive waste generated mainly from the analytical laboratories is stored at the Waste Management Laboratory. Among various types of radioactive waste generated, the organic liquid represents a major problem for its management, because it can not be directly solidified with cement. The objective of this work is to develop a pretreatment methodology to degrade the ethyl acetate present in organic liquid waste so that it can subsequently be immobilized in cement. This work was divided into two parts: i) selection and adaptation of three bacterial communities for growth in medium containing ethyl acetate. ii) degradation experiments of ethyl acetate present in radioactive organic liquid waste. The results showed that from bacterial communities the highest biodegradation level observed was 77%.openAccessacetic acid estersbacteriabiodegradationculture mediagas chromatographyliquid wastesradioactive waste managementradioactive wastestime dependenceBiodegradation of ethyl acetate in radioactive liquid organic waste by bacterial communitiesTexto completo de eventohttps://orcid.org/0000-0003-3010-9691https://orcid.org/0000-0003-2852-6189https://orcid.org/0000-0001-6072-5853