Análise Físico-Química E Microbiológica De Águas De Poços Artesianos De Uso Independente

Oliveira, Michael Machado; Lima, Alex de Sousa; Mouchrek, Adenilde Nascimento; Marques, Paulo Roberto Brasil de Oliveira; Marques, Clara Virgínia Vieira Carvalho Oliveira

doi:10.19177/rgsa.v7e32018624-639

Cited by 4 publications

(3 citation statements)

References 5 publications

(7 reference statements)

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“…Oliveira et al (2018), performing physical-chemical and microbiological analysis of water from artesian wells for independent use, found results for the physical chemical parameters color and turbidity within the stipulated by the legislation and for the values for the hydrogen potential pH in disagreement with the legislation. Regarding the microbiological result of Oliveira et al (2018), found 70% of the samples were collected without disagreement with the recommendations of Consolidation Ordinance No. 5, of September 28, 2017.…”

Section: Resultsmentioning

confidence: 95%

“…Alves et al (2018), researching the behavior of the specific mass of pineapple pulps as a function of temperature, found the values of the specific masses of pineapple pulps ranging from 1060.31 to 3 1044.32 kg/m at temperatures of 10 to 50 °C. Oliveira et al (2018) observed during studies on pineapple pulp that the specific mass tended to decrease when there was an increase in temperature in their experiment. According to Mercali et al (2011), Diniz et al (2014 and Alves et al (2018), the specific mass values of pineapple and watermelon pulps decrease with increasing temperature, probably due to the volumetric expansion of the fluid caused by the reduction of the intermolecular force connection.…”

Section: Determination Of the Volumetric Expansion Coefficient Of Pineapple And Watermelon Pulpsmentioning

confidence: 95%

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Scientific Initiation: Stimulus for research and path to knowledge production

Viroli¹,

Rodrigues²,

Sousa³

et al. 2021

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The collection of scientific articles brings together articles authored by the teachers of the Undergraduate Courses in Chemistry, Mathematics and Food Technology at the Federal Institute of Education, Science and Technology of Tocantins IFTO -Paraíso do Tocantins campus. The scientific articles referring to the areas of exact and earth sciences, agrarian sciences and engineering, were prepared based on research and scientific initiation works developed, during the years 2018 and 2019, by teachers with the collaboration of scholarship students and volunteers, in order to contribute for academic quality, providing the ability to learn using the stimulus of scientific research and the production of knowledge.The scientific works in this collection were presented at conferences, in an expanded summary format, allowing its authors to exchange experiences with researchers from Brazilian universities, members of the scientific communities in Brazil and abroad, on the dissemination and application of scientific research carried out. The publication of the collection reflects the commitment of the organizing professors with the technical-scientific bases and the development of scientific research in the undergraduate courses of the IFTO Campus Paraíso do Tocantins.

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Section: Resultsmentioning

confidence: 95%

Section: Determination Of the Volumetric Expansion Coefficient Of Pineapple And Watermelon Pulpsmentioning

confidence: 95%

Scientific Initiation: Stimulus for research and path to knowledge production

Viroli¹,

Rodrigues²,

Sousa³

et al. 2021

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“…However, the pH was below the recommended lower limit in all wells, presenting values between 5.02 and 5.92 (Table 2). The pH of well waters are often below 6.0 in different localities in the state of Maranhão, such as in Raposa, São Luís, Timbiras, Paço Lumiar, Santa Helena and Itapecuru-Mirim, and in Santa Helena a pH of 3.8 was observed (Alves, 2010;Coelho et al, 2017;de Oliveira et al, 2019;Marques et al, 2010;Oliveira, 2018;Rodrigues et al, 2020). In the rural area of Imperatriz, an artesian well with pH 6.0 was found, which is at the lower limit of the reference value (Santos et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

Physical-chemical and microbiological analysis of water from shallow wells in Imperatriz (MA), Brazil

et al. 2020

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The quality of groundwater from Imperatriz (MA) is little known. This work investigated microbiological contaminants (total coliforms and Escherichia coli) and the levels of 10 physicochemical parameters in 10 wells located in the urban periphery of the municipality of Imperatriz. The counts of E. coli and total coliforms were ≥ 1600 CFU mL-1 in all the wells. Levels of chloride, sulfate, hardness and turbidity levels were below the maximum allowed for drinking water. However, levels of iron (0.46 – 1.75 mg L-1) and pH (5.02 – 5.92) were not in compliance with drinking water standards in all the wells investigated. The same was observed in relation to oil and grease in water (0.0 – 6.8 mg L-1), which were detected in 40% of the wells. Levels of nitrite (0.71 – 3.84 mg L-1), nitrate (4.16 – 13.52 mg L-1) and total dissolved solids (810 – 2060 mg L-1) were above the highest limit in 50%, 60% and 70% of wells, respectively. The acidic pH observed in all the wells makes them also unsuitable for animal intake and irrigation. The acidity and the high level of iron in all wells suggest that they are natural characteristics of the soil and the groundwater of the region. Contamination with nitrite and nitrate in some wells, as well as high counts of coliforms, may be related to deficiencies in basic sanitation in the area. The origin of oil and grease in the wells should be better investigated to avoid contamination of the water table.

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Análise da qualidade da água para o consumo humano do assentamento Jerusalém no município de Rubim-MG

Teixeira¹,

Souza²,

Gama³

et al. 2022

Revista Científica Multidisciplinar Núcleo do Conhecimento

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A água é um dos mais importantes recursos do ecossistema, sendo utilizada em atividades do dia a dia e para o consumo humano. A água utilizada no consumo humano não deve conter a presença de organismos patogênicos e substâncias nocivas para a saúde. Considerando que nas áreas rurais o acesso à água potável é negligenciado, quando comparado com as áreas urbanas, este trabalho tem como objetivo avaliar a qualidade da água utilizada pelos moradores do Assentamento Jerusalém no Município de Rubim - MG utilizando um Kit Técnico de Potabilidade (Alfakit). Foram coletadas 12 amostras de água em diferentes casas do assentamento, sendo 3 (três) de poço artesiano (PA), 3 (três) de caminhão pipa (CP), 3 (três) de chuva tratadas com solução de hipoclorito de sódio 2,5% (CH) e 3 (três) de chuva sem solução de hipoclorito de sódio 2,5% (CSH). Foram realizadas análises físico-químicas (pH, cloro, cloretos, dureza total, ferro, cor, turbidez) e microbiológicas (Coliformes totais e E. coli) utilizando um Kit Técnico de Potabilidade (Alfakit), onde as análises são realizadas por comparação em cartela colorimétrica e métodos titulométricos. Os resultados foram comparados com os valores de referência estabelecidos pela Portaria n° 5/2017 do Ministério da Saúde e demonstraram que, em relação aos parâmetros físico-químicos analisados, a turbidez e cor estão fora do Valor Máximo Permitido. Esses dois parâmetros estão interligados e apresentam mais conotação estética do que sanitária, podendo ser corrigidos com a limpeza dos reservatórios e filtragem da água para o consumo. Já no que se refere à análise microbiológica, não houve presença de coliformes totais. Foi identificada a presença de E. coli apenas nas amostras advindas de caminhão pipa fornecida pela COPASA. Por fim, uma atenção deve ser dada em relação à água proveniente do poço artesiano (PA-1), pois este apresentou coliformes termotolerantes (E. coli), o que indica a presença direta de fezes na água consumida e a torna inapropriada para o consumo humano.

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Análise Físico-Química E Microbiológica De Águas De Poços Artesianos De Uso Independente

Cited by 4 publications

References 5 publications

Scientific Initiation: Stimulus for research and path to knowledge production

Scientific Initiation: Stimulus for research and path to knowledge production

Physical-chemical and microbiological analysis of water from shallow wells in Imperatriz (MA), Brazil

Análise da qualidade da água para o consumo humano do assentamento Jerusalém no município de Rubim-MG

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