Analysis of Bacteria, Parasites, and Heavy Metals in Lettuce (Lactuca sativa) and Rocket Salad (Eruca sativa L.) Irrigated with Treated Effluent from a Biological Wastewater Treatment Plant

Nikaido, Meire; Tonani, Karina Aparecida Abreu; Julião, Fabiana Cristina; Trevilato, Tânia Maria Beltramini; Takayanagui, Ângela Maria Magosso; Sanches, Sérgio Marcos; Domingo, José L.; Segura-Muñoz, Susana Inés

doi:10.1007/s12011-009-8477-8

Cited by 22 publications

(12 citation statements)

References 18 publications

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“…The level of microbial contamination observed in recycled wastewater, soils, and crops depends on technical regulations based on national standards. In this context, posttreatment disinfection processes such as chlorination, ozonation, and UV radiation, shown to be successful treatments against microbial agents and pharmaceutical ingredients, can significantly reduce the risks associated with TWW irrigation (Hey et al 2012;Martinez et al 2011;Nikaido et al 2010;Bernstein et al 2008;An et al 2007).…”

Section: Wastewater Reuse In Agriculture: Benefits Vs Risksmentioning

confidence: 99%

Performance of the Municipal Wastewater Treatment Plant for Removal of Listeria monocytogenes

2015

Wastewater and Public Health

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The reuse of treated wastewater (TWW) for irrigation is a practical solution for overcoming water scarcity, especially in arid and semiarid regions of the world. However, there are several potential environmental and health-related risks associated with this practice. One such risk stems from the fact that TWW irrigation may increase antibiotic resistance (AR) levels in soil bacteria, potentially contributing to the global propagation of clinical AR. Wastewater treatment plant (WWTP) effluents have been recognized as significant environmental AR reservoirs due to selective pressure generated by antibiotics and other compounds that are frequently detected in effluents. This review summarizes a myriad of recent studies that have assessed the impact of anthropogenic practices on AR in environmental bacterial communities, with specific emphasis on elucidating the potential effects of TWW irrigation on AR in the soil microbiome. Based on the current state of the art, we conclude that contradictory to freshwater environments where WWTP effluent influx tends to expand antibiotic-resistant bacteria (ARB) and antibiotic-resistant genes levels, TWW irrigation does not seem to impact AR levels in the soil microbiome. Although this conclusion is a cause for cautious optimism regarding the future implementation of TWW irrigation, we conclude that further studies aimed at assessing the scope of horizontal gene transfer between effluent-associated ARB and soil bacteria need to be further conducted before ruling out the possible contribution of TWW irrigation to antibiotic-resistant reservoirs in irrigated soils.

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Section: Wastewater Reuse In Agriculture: Benefits Vs Risksmentioning

confidence: 99%

Performance of the Municipal Wastewater Treatment Plant for Removal of Listeria monocytogenes

2015

Wastewater and Public Health

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“…Generally, the release of raw sewage into rivers causes environmental degradation by the spread of disease and the impairment of water quality, which may then become unfit for certain uses [2,3]. The composition of the sewage sludge depends mainly on the origin of the residues treated: domestic or industrial activities [3,4]. Among the chemical components, carbohydrates, oils, pesticides, phenols, proteins, surfactants, and volatile organic compounds constitute the organic matter, while alkali compounds, chlorides, heavy metals, nitrogen, phosphates, and sulfides are notable inorganic components.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Metals, Pathogen Parasites, and Indicator Bacteria in Sewage Effluents During Biological Treatment by Activated Sludge

Tonani

Julião

Trevilato

et al. 2010

Biol Trace Elem Res

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The purpose of this study was to evaluate the behavior of metals, pathogen parasites, and indicator bacteria in sewage effluents during biological treatment by activated sludge in a wastewater treatment plant in Ribeirão Preto (WTP-RP), Sao Paulo, Brazil. The evaluation was done during a period of 1 year. Results showed that metal concentrations in treated effluents decreased, reaching concentrations according to those established by national regulations. The activated sludge process at the WTP-RP promoted a partial removal of parasites considered as possible indicators according to the WHO guidelines. Reduction factors varied between 18.2% and 100% for agents such as Endolimax nana, Entamoeba coli, Entamoeba hystolitica, Giardia sp., Ancylostoma sp., Ascaris sp., Fasciola hepatica, and Strongyloides stercoralis. A removal was also observed in total and fecal coliforms quantification. The present study represents an initial evaluation of the chemical and microbiological removal capacity of the WTP-RP. The results should be of interest for the authorities responsible for the environmental health at municipal, regional, national, and international levels.

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“…The samples passed through the digestion process by Method 3005A of the Environmental Protection Agency for the analysis of metals (USEPA, 1992;Nikaido et al, 2010). Fifty mL aliquots of a water sample tube were added to the digester block to which was added 2 mL of HNO 3 and 5 mL of HCl.…”

Section: Metals Analysismentioning

confidence: 99%

“…Among the various chemical contaminants, the study of heavy metals has been considered a priority in health promotion programs worldwide (Nikaido et al, 2010). According to Baird (2002), the term "heavy metal" refers to a class of chemical elements; many of them are harmful to humans.…”

Section: Metalsmentioning

confidence: 99%

Chemical and microbiological analysis of public school water in Uberaba Municipality

Sanches¹,

Muniz²,

Passos³

et al. 2015

Rev. ambiente água

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This study evaluated the quality of water consumed by schoolchildren in the city of Uberaba, relying upon chemical analyzes to determine the levels of free-residual chlorine and levels of chromium, copper, manganese, lead and cadmium. Microbiological analysis was also performed in order to determine total coliforms and Escherichia coli, using the values established by Ordinance n 0 . 2914 of 2011 of the Ministry of Health as parameters for safe drinking water. Water samples were analyzed from the drinking fountains and kitchen faucets of eight public schools that serve children aged 0-5 years. Sampling was conducted quarterly from December 2011 to September 2012, resulting in four collections. The results revealed the presence of Escherichia coli and total coliforms above the valued permitted by legislation in more than 50% of the samples. It was also observed that concentrations of free-residual chlorine were below the minimum value required by law in nearly half of the samples analyzed. In relation to the concentration of metals, some samples had water contents of copper, cadmium, chromium, manganese and lead above the permissible levels. Statistical tests revealed that when analyzing the period of sampling, only the values for the concentrations of free-residual chlorine, chromium and lead showed no significant difference (p> 0.05). The results show the need for corrective actions at the water supply point for the school population, in addition to monitoring and controlling the quality of water for human consumption.Keywords: chemical analysis, drinking water, microbiological analyzes.Análise química e microbiológica da água de escolas públicas municipais de Uberaba RESUMONeste estudo a qualidade da água consumida por escolares na cidade de Uberaba-MG foi avaliada levando-se em consideração os resultados das análises químicas para determinação dos teores de cloro residual livre e níveis de cromo, cobre, manganês, chumbo e cádmio, além 531 Chemical and microbiological analysis of public school water … Rev. Ambient. Água vol. 10 n. 3 Taubaté -Jul. / Sep. 2015 das análises microbiológicas para determinação de coliformes totais e Escherichia coli, tomando-se como parâmetro para água potável, os valores estabelecidos pela Portaria nº 2.914 de 2011 do Ministério da Saúde (Brasil, 2011). Foram analisadas amostras de água provenientes de bebedouros e torneiras da cozinha de oito instituições de ensino infantil da rede pública municipal que atendem crianças com a faixa etária de 0 -5 anos. As amostragens foram realizadas em períodos trimestrais compreendidos entre dezembro de 2011 e setembro de 2012, resultando em quatro coletas. Os resultados obtidos revelaram a presença de Escherichia coli e coliformes totais, acima dos valores permissíveis pela legislação em mais de 50% das amostras analisadas. Foi verificado ainda, teor de cloro residual livre abaixo do valor mínimo exigido pela legislação vigente em quase metade das amostras analisadas. No que se refere à concentração de metais, algumas amostras de água a...

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Analysis of Bacteria, Parasites, and Heavy Metals in Lettuce (Lactuca sativa) and Rocket Salad (Eruca sativa L.) Irrigated with Treated Effluent from a Biological Wastewater Treatment Plant

Cited by 22 publications

References 18 publications

Performance of the Municipal Wastewater Treatment Plant for Removal of Listeria monocytogenes

Performance of the Municipal Wastewater Treatment Plant for Removal of Listeria monocytogenes

Behavior of Metals, Pathogen Parasites, and Indicator Bacteria in Sewage Effluents During Biological Treatment by Activated Sludge

Chemical and microbiological analysis of public school water in Uberaba Municipality

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