Autor(es):
de Faria, Marianne Fidalgo [UNESP] ; Guerrini, Iraê Amaral [UNESP] ; Oliveira, Fernando Carvalho ; Sato, Maria Inês Zanoli ; Passos, José Raimundo de Souza [UNESP] ; James, Jason Nathaniel ; Harrison, Robert Boyd
Data: 2020
Identificador Persistente: http://hdl.handle.net/11449/200903
Origem: Oasisbr
Assunto(s): Microorganisms; Organic fertilizer; Pathogens; Sewage sludge; Survival time; Microorganisms; Microorganisms; Organic fertilizer; Organic fertilizer; Pathogens; Pathogens; Sewage sludge; Sewage sludge; Survival time; Survival time
Descrição
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
U.S. Department of Agriculture
The increasing production of biosolids in urban areas has been led to a search for alternative disposal avenues of this residue, which is rich in organic matter and nutrients. Agricultural land application of biosolids, motivated by its fertilizing power, is a widespread practice in many countries, but there are safety and regulatory concerns regarding the presence of pathogens in Class B biosolids. In addition, the scarcity of studies under tropical climate conditions raises questions that impede the agricultural use of this residue in some regions. The objective of this study was to evaluate the survival of thermotolerant coliforms over 12 months (52 weeks) after biosolids application on the surface of a Quartzipsamment neosol cultivated with Eucalyptus. Two different biosolids were studied: those generated by a biological treatment system with complete mixing aeration ponds followed by decantation ponds (Treatment A) and biosolids from a biological treatment system with conventional activated biosolids reactors (Treatment B), both delineated in randomized blocks with four replicates. After application on the forest soil, we estimated an average survival time of 54 weeks for thermotolerant coliforms present in Treatment A biosolids and 93 weeks in Treatment B biosolids. Thermotolerant coliforms persist much longer under tropical climate conditions in Brazil than in comparable studies under temperate climate conditions. This reaffirms the need to carry out studies covering the full range of moisture and temperature regimes in which biosolids are applied as fertilizer.
Depto. de Ciência Florestal Solos e Ambiente Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP Faculdade de Ciências Agronômicas, Caixa Postal 237
Biossolo Agricultura & Ambiente S.S., Rua Campos Salles, 1152
Dep. de Análises Ambientais Companhia Ambiental do Estado de São Paulo – CETESB, Av. Prof. Frederico Hermann Júnior, 345
Dep. de Bioestatística Biologia Vegetal Parasitologia e Zoologia Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP Instituto de Biociências, R. Prof. Dr. Antônio Celso Wagner Zanin S/N
Exponent Inc., 15375 SE 30th Place Suite 250
School of Environmental and Forest Sciences College of the Environment University of Washington, Box 352100
Depto. de Ciência Florestal Solos e Ambiente Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP Faculdade de Ciências Agronômicas, Caixa Postal 237
Dep. de Bioestatística Biologia Vegetal Parasitologia e Zoologia Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP Instituto de Biociências, R. Prof. Dr. Antônio Celso Wagner Zanin S/N
FAPESP: 2014/03024-0
