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Authors

  • João Bosco Rozas Rodrigues Departamento de Aquicultura - UFSC
  • Paulo Belli Filho Departamento de Engenharia Sanitária e Ambiental - UFSC

Abstract

Efficiency of Chlorella minutissima microalgae in the treatment of swine-waste enriched with urea. The increasing process of pig breeding and the lack of adequate technologies to treat the residue originating from this activity in Brazil has been causing considerable environmental degradation and a threat to water resources. The utilization of microalgae to treat rural farming residue has been widely used in several countries with success. This presents many advantages, such as reducing polluting agents and providing a high biological and economic value of the produced algal biomass. The present work was developed with the microalgae Chlorella minutissima, with the objective of testing the process on a medium scale, under semi-controlled conditions, verifying the effect of urea addition and the pH control. The effects of these treatments on algal growth efficiency and on the capacity to remove polluting agents were observed experimentally. The results showed that the growth efficiency of the microalgae Chlorella minutissima, cultivated in residues 20 cm deep at a cod concentration of 280 mg/L was not influenced by added urea or pH control. The use of these algae in a mixed culture (algae and bacteria) reduced the COD, turbidity, total solids, volatile total solids, total suspended solids, ammonia, orthophosphate and total phosphate.

Author Biographies

João Bosco Rozas Rodrigues, Departamento de Aquicultura - UFSC

Possui Graduação em Medicina Veterinária pela Universidade Federal do Rio Grande do Sul, Especialização em Aquicultura pela Sudepe Dnocs, Especialização em Pesca e Aquicultura pela Universidade Federal de São Carlos, Mestrado em Oceanografia pela Universidade Federal de Pernambuco e Doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos. Atualmente é Adjunto IV da Universidade Federal de Santa Catarina.

Mais informações no Currículo Lattes.

Paulo Belli Filho, Departamento de Engenharia Sanitária e Ambiental - UFSC

Possui Graduação em Medicina Veterinária pela Universidade Federal do Rio Grande do Sul, Especialização em Aquicultura pela Sudepe Dnocs, Especialização em Pesca e Aquicultura pela Universidade Federal de São Carlos, Mestrado em Oceanografia pela Universidade Federal de Pernambuco e Doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos. Atualmente é Adjunto IV da Universidade Federal de Santa Catarina.

Mais informações no Currículo Lattes.

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Published

2004-01-01

Issue

Vol. 17 No. 2 (2004)

Section

Artigos

License

Copyright (c) 2004 João Bosco Rozas Rodrigues, Paulo Belli Filho

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