01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Atividade microbiana de um solo sob cobertura morta e cultivado com forrageiras irrigadas com água de reuso(2022-08-29) Barros, Danilo José de; Lira Junior, Mario de Andrade; Fracetto, Felipe José Cury; http://lattes.cnpq.br/8645174138041143; http://lattes.cnpq.br/7272749911485530; http://lattes.cnpq.br/1685882434827642The United Nations estimates that the population will be 9.7 billion inhabitants in the next 30 years, demanding an increase in food production. A strategy to increase this demand and reduce environmental impact is the use of wastewater for irrigation in association with mulch, which can bring benefits to the soil microbiota, greater availability of nutrients and agricultural productivity. The objective of this work was to evaluate the abundance and microbial activity in soils cultivated with forage cactus, irrigated with sewage wastewater and with mulch. The experiment was at the Parnamirim Production Unit - PE, using reused water from the sewage treatment plant for irrigation of forage cactus consorted with buffel grass and sudan sorghum. The forage cactus was implanted in double rows 0.5m x 0.5m x 2.0 m, with the cultures intercalated between the double rows, with the experimental unit formed by three double rows of 4 m in length each. Four replications were used in the design in randomized blocks, in factorial arrangement 2 (intercropping with sudan sorghum and buffel grass) x 4 covers (no cover, 8 and 12 tons of corn straw per hectare and natural vegetation). We evaluated soil basal respiration, carbon and nitrogen from soil microbial biomass and metabolic quotient, at 0-10 and 10-20 cm layers. There was no significant difference in soil basal respiration, microbial nitrogen, and metabolic quotient at 0-10 and 10-20 layers. Estimating carbon from microbial biomass at 0-10 cm layer, we observed a significant difference between the intercrops without vegetation cover, however at 10-20 with buffel grass, the 8 tons mulch differed from the other treatments. Even so, further research is necessary to observe these variables over a longer period.Item Diagnóstico dos dessalinizadores no nordeste do Brasil(2020) Montenegro, Hugo Gico Lima de Assunção; Silveira, Ana Virgínia Marinho; http://lattes.cnpq.br/8207812492517198; http://lattes.cnpq.br/9319063360185884The Brazilian semi-arid region is characterized by irregularity and low rainfall rates, as well as high rates of evapotranspiration and the predominance of crystalline rocks, which impact the groundwater quality. These high saline levels favour scarcity, being access to good quality water for human, animal and productive development a major challenge. The objective of this study was to quantitatively and qualitatively evaluate the current situation of the desalination plants in the municipality of Pesqueira in Pernambuco, Brazil, through technical visits and questionnaire application to community members. Thirteen (13) desalinators were identified in the studied municipality, providing potable water for the population of these regions, of which seventy-seven percent (77%) are fully functioning, and thirty percent (30%) of those do not have a system for the use of concentrated water, this being one of the main environmental problems associated to desalination.Item Reuso de água como estratégia competitiva em lavanderias de jeans no Agreste pernambucano: o caso de Toritama(2022-05-27) Silva Júnior, João Sales da; Oliveira, Isabel Cristina Pereira de; http://lattes.cnpq.br/4745142041015422; http://lattes.cnpq.br/0325504572909793Jeans laundries located in Toritama, in the countryside of Pernambuco, play an important role in the regional economy. However, the production system of this type of enterprise is linear, with cheap labor, small elaborated raw material and low technological innovation. In addition, the laundries in Toritama are located in a location with low water availability, which makes water a limiting factor in production and represents a high cost in the jeans washing process. Faced with this problem, the present work aimed to evaluate whether the adoption of technologies in water reuse can be used as a competitiveness strategy for the textile industry of Toritama/PE. A mixed case study was carried out with the application of a questionnaire on production processes and technologies in water reuse. The results show that reuse is presented as a competitive strategy in the context of laundries as it reduces the cost of producing the parts since the value of the water consumed is passed on in the final product. This makes it possible to offer low-cost jeans and guarantee the competitiveness of the laundries studied in the region.