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Effluent from Citrus Industry: Toxic Parameters of Orange Vinasse

Authors
  • Garcia, Camila Fernandes H.1
  • de Souza, Raphael B.1, 2
  • de Souza, Cleiton Pereira1
  • Fontanetti, Carmem Silvia1
  • 1 UNESP—São Paulo State University, Institute of Bioscience, Rio Claro, São Paulo, Brazil , São Paulo (Brazil)
  • 2 University of Campinas, School of Civil Engineering, Architecture and Urban Design, Campinas, Brazil , Campinas (Brazil)
Type
Published Article
Journal
Water Air & Soil Pollution
Publisher
Springer-Verlag
Publication Date
Aug 10, 2019
Volume
230
Issue
8
Identifiers
DOI: 10.1007/s11270-019-4260-4
Source
Springer Nature
Keywords
License
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Abstract

Brazil is one of the greatest producers of orange and its orange juice processing industry produces large volumes of solid and liquid waste daily. As an efficient use of the residues from citrus industry, production of bioethanol is highlighted. However, the generation of bioethanol produces a liquid effluent as a by-product, known as vinasse. The objective of this study was to evaluate the toxicity of an effluent from citrus industries, orange vinasse, when applied to soil using Allium cepa seeds. The evaluation was performed by means of germination, root growth, and genotoxic and mutagenic parameters. The EC50 (effectiveness concentration) and ½ EC50, defined in the germination test, were used for genotoxicity tests. Toxicity was observed in dilutions above 40%, which was responsible for reducing the germination speed index. Genotoxicity was observed only using the EC50 and mutagenicity was not detected. According to the results, orange vinasse showed toxicity similar to the sugar cane vinasse, so caution is suggested in the disposal of this effluent into the environment.

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