GARCIA, V.SOLE, S.V.BOIANI, N.F.ROSA, J.M.BORRELY, S.I.2020-06-092020-06-09GARCIA, V.; SOLE, S.V.; BOIANI, N.F.; ROSA, J.M.; BORRELY, S.I. Evaluation of toxicity and color reduction of Reactive dye Yellow 160 and Red BG-3B, and textiles effluents after treatment by electron beam. In: SETAC LATIN AMERICA BIENNIAL MEETING, 12th, September 7-10, 2017, Santos, SP. <b>Abstract...</b> p. 110-110. Disponível em: http://repositorio.ipen.br/handle/123456789/31262.http://repositorio.ipen.br/handle/123456789/31262Textile effluents are always collored due to the amount of dyes lost during dieying processes. The low biodegradability and high solubility makes these compounds (reactive dyes) difficult to be enough removed by conventional treatment processes. The objective of the present study is to assess toxicity of Reactive dye Yellow - 160 and Red BG-3B as well as raw effluents containing such dyes. Acute toxicity tests were carried out with reference aquatic organisms: Vibrio fischeri bacteria and Daphnia similis microcrustaceans. After this, the effluent is also submitted to EBI treatment (irradiation at electron beam accelerator) for reducing color, with 0.5 kGy to 20 kGy doses. 100% of daphnids survived at 1g.L-1 of RY-160, and for Red BG-3B (C=0.564 g.L-1) EC 50% (48h) = 69.0 ± 0.66 . Raw textile effluent with dye RY-160 resulted in EC 50% lower than 2% for both organisms (D. similis EC 50% (48h) = 1.74 ± 0.53 and 0.6 ± 0.29, V. fischeri (15 min). For raw textile with Red BG-3B: D. similis EC 50% (48h) = 6.73 ± 0.72. The EBI treatment was effective for color removal, efficiency superior to 90% at 10 kGy. The data demonstrated the importance of evaluating not only dyes but also the effluent, since it has several additives that contributed to the high toxicity.110-110openAccessResumo de eventos científicoshttps://orcid.org/0000-0002-9692-5539