Compostagem como alternativa de disposição final dos resíduos sólidos orgânicos gerados na Embrapa Soja
With the expansion of agricultural production, there has been a growing relation in the generation of solid waste, requiring proper disposal. In order to assess the organic waste composting process generated at Embrapa Soja, two systems have been compared: controlled (aeration and irrigation) and na...
| Autor principal: | Andrade, Francine Conceição de |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/12019 |
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| Resumo: |
With the expansion of agricultural production, there has been a growing relation in the generation of solid waste, requiring proper disposal. In order to assess the organic waste composting process generated at Embrapa Soja, two systems have been compared: controlled (aeration and irrigation) and natural efficacy in stabilizing organic matter. The following treatments were tested: T11 - Waste selective collection + soybeans with soy straw (controlled); T12 - Waste selective collection + soybeans with soy straw (natural); T21 - Waste selective collection + soybeans with wheat straw (controlled); T22 - Waste selective collection + soybeans with wheat straw (natural); T31 - Waste selective collection + soybeans with tree pruning (controlled); T32 - Waste selective collection + soybeans with tree pruning (natural); T41 - Waste selective collection + soybean + mixture of wheat straw with soy and tree pruning (controlled); T32 - Waste selective collection + soybean + mixture of wheat straw with soy and tree pruning (natural). The composting process was conducted in windrows for 120 days held-turnings and watering every two weeks in controlled treatments. The piles were monitored in their humidity content, pH, electrical conductivity, total carbon, total nitrogen, C/N ratio, reduced weight and volume. The final quality of the generated compounds according to NI No 25/2009 of the MAPA has been analized. Moisture it was ideal in controlled treatments and below in the natural ones. The pH values were always near neutral to basic in all treatments, with final values ranging from 7.7 to 8.5. There was a decrease of electrical conductivity in all treatments to tolerable values to fertilization. Controlled treatments had higher nitrogen values at the end of the composting. The C/N ratio decreases in all treatment reaching values of 7.5/1 to 8.9/1, indicating matured compounds. There was a reduction in mass and volume in treatment, especially the T31 and T32 treatment in wich the dry matter reductions were statistically similar. At the end of composting compounds met the limits of NI No 25/2009 of MAPA pH, N, C, C/N, Mn and Ca. The other nutrients were below the limits established by regulations. |
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