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Correia MS, Santos ENA, Magalhães PKA, Santos AM, Messias MICSD, Santos Júnior JC, Carvalho Neto APM, Souza MA, Fonseca SA, Ferreira Júnior GC, Cavalcanti MGS, Costa JG, Miranda PRB, Rocha TJM. Physicochemical, microbiological and parasitological analysis of water for human consumption in a quilombola community in Alagoas. BRAZ J BIOL 2022; 82:e260905. [PMID: 35857949 DOI: 10.1590/1519-6984.260905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 05/17/2022] [Indexed: 11/22/2022] Open
Abstract
Water is the indispensable natural resource for all living beings. For human consumption, it must be potable, so as not to pose a risk to health, and can be used for ingestion, food preparation and personal hygiene. Knowing this importance, this study aimed to carry out physical-chemical, microbiological and parasitological analyzes of water for human consumption in a quilombola community of Santa Luzia do Norte in Alagoas. A cross-sectional, experimental and quantitative study was carried out between January and December 2019. The physical-chemical parameters of residual chlorine, turbidity, fluoride, fluoridation, color and pH were analyzed, microbiological analyses were based on the research of total and thermotolerant coliforms (E. coli) and parasitological analyses were performed based on the research of protozoa and intestinal helminths. Some physical-chemical parameters (turbidity and pH) were observed outside the limits required by the Ministry of Health, and the presence of total coliforms in some of the analyzed samples (17.85%), characterizing this community at risk related to waterborne diseases. The samples analyzed did not present infecting forms of parasitic species. Regarding the variables evaluated, the results found showed that the lack of adequate basic sanitation affects the quality of water used for human consumption by the quilombola population of Santa Luzia do Norte-AL.
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Affiliation(s)
- M S Correia
- Centro Universitário Cesmac, Maceió, AL, Brasil.,Instituto Federal de Alagoas, Maceió, AL, Brasil
| | | | - P K A Magalhães
- Centro Universitário Cesmac, Maceió, AL, Brasil.,Instituto Federal de Alagoas, Maceió, AL, Brasil
| | - A M Santos
- Centro Universitário Cesmac, Maceió, AL, Brasil
| | - M I C S de Messias
- Centro Universitário Cesmac, Maceió, AL, Brasil.,Instituto Federal de Alagoas, Maceió, AL, Brasil
| | - J C Santos Júnior
- Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
| | | | - M A Souza
- Centro Universitário Cesmac, Maceió, AL, Brasil
| | - S A Fonseca
- Centro Universitário Cesmac, Maceió, AL, Brasil
| | - G C Ferreira Júnior
- Instituto Federal de Educação, Ciência e Tecnologia do Acre, Xapuri, AC, Brasil
| | | | - J G Costa
- Embrapa Alimentos e Territórios, Maceió, AL, Brasil
| | | | - T J M Rocha
- Centro Universitário Cesmac, Maceió, AL, Brasil.,Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, AL, Brasil
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de Oliveira DA, Galvão P. Geometry and water quality of the unconfined aquifer near the Piracicaba river, Ipatinga/MG, Brazil. HYDRORESEARCH 2019. [DOI: 10.1016/j.hydres.2019.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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An integrated assessment of water quality in a land reform settlement in northern Rio de Janeiro state, Brazil. Heliyon 2019; 5:e01295. [PMID: 30899828 PMCID: PMC6407149 DOI: 10.1016/j.heliyon.2019.e01295] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 12/29/2018] [Accepted: 02/26/2019] [Indexed: 11/28/2022] Open
Abstract
The Zumbi dos Palmares land reform settlement lacks modern facilities for water and sewage treatment. Local farmers often use shallow wells as alternative source of water supply, because the water table is reasonably high in the region. This work presents a multivariate analysis assessment of physicochemical and bacteriological parameters and pesticide residues in water samples collected from these shallow wells. The physicochemical parameters analyzed were: conductivity, pH, DOC (dissolved organic carbon), nitrate, turbidity, and bacteriological analysis measuring total and fecal coliforms. The results show non-compliance with Brazilian legal standards in most samples where low pH values were found, characterizing the presence of acidic waters. Another example of non-compliance is the presence of total and fecal coliforms in for drinking water in most of the samples and, in some cases, very high values (2,400 CFU). Some wells showed high conductivity values, probably associated with a history of oceanic intrusion. Analyses determining the contamination by pesticides show the presence of ametrine, atrazine, methyl parathion, carbaryl and hexazinone. The concentration for these compounds ranged from 0.14 to 1.17 μg/L. Ordinance No 2914/2011 from the Brazilian Ministry of Health establishes the acceptable limits for atrazine and methyl parathion as 9 μg L−1 and 2 μg L−1. None of these exceeded the allowable Brazilian and European limits. However, for the other two pesticides, the European Legislation (Council Directive) recommends the maximum allowable concentration of 0.1 μg L−1 and, 0.5 μg L−1 for total pesticides. Our samples that were above the quantifiable limit of 50 ng L−1, were also above the European limit values. Our results therefore suggest that water gathered from shallow wells at the Zumbi dos Palmares settlement is not proper for consumption without proper disinfection treatments.
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de Castro Medeiros L, de Alencar FLS, Navoni JA, de Araujo ALC, do Amaral VS. Toxicological aspects of trihalomethanes: a systematic review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:5316-5332. [PMID: 30607849 DOI: 10.1007/s11356-018-3949-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 12/07/2018] [Indexed: 05/28/2023]
Abstract
Chlorine is considered the most used chemical agent for water disinfection worldwide. However, water chlorination can lead to by-product generation which can be toxic to humans. The present study aimed to perform a systematic review on the toxicity of trihalomethanes (THMs) through bioindicators of cytotoxicity, genotoxicity, and mutagenicity. The results showed that studies on the effects of THMs on DNA are a current research concern for evaluating the toxicity of the pure compounds and real samples involving several types including water for recreational use, reused water, and drinking water. THMs deleterious effects have been assessed using several biosystems, where the Ames test along with experimental animal models were the most cited. A wide range of THM concentrations have been tested. Nevertheless, DNA damage was demonstrated, highlighting the potential human health risk. Among the studied THMs, chloroform presented a different action mechanism when compared with brominated THMs, with the former being cytotoxic while brominated THMs (bromodichloromethane, bromoform, and dibromochloromethane) were cytotoxic, genotoxic, and mutagenic. The described evidence in this research highlights the relevance of this topic as a human health issue. Nevertheless, research aimed to represent THMs current exposure conditions in a more accurate way would be needed to understand the real impact on human health.
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Affiliation(s)
- Luciana de Castro Medeiros
- Development and Environment, Bioscience Center, Federal University of Rio Grande do Norte (UFRN), University Campus, Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Feliphe Lacerda Souza de Alencar
- Development and Environment, Bioscience Center, Federal University of Rio Grande do Norte (UFRN), University Campus, Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Julio Alejandro Navoni
- Development and Environment, Bioscience Center, Federal University of Rio Grande do Norte (UFRN), University Campus, Lagoa Nova, Natal, RN, 59072-970, Brazil
- Department of Natural Resources, Federal Institute of Education, Science and Technology of Rio Grande do Norte, Natal, RN, Brazil
| | - André Luis Calado de Araujo
- Department of Natural Resources, Federal Institute of Education, Science and Technology of Rio Grande do Norte, Natal, RN, Brazil
| | - Viviane Souza do Amaral
- Development and Environment, Bioscience Center, Federal University of Rio Grande do Norte (UFRN), University Campus, Lagoa Nova, Natal, RN, 59072-970, Brazil.
- Department of Cell Biology and Genetics, Center of Biosciences, Federal University of Rio Grande do Norte (UFRN), University Campus, Lagoa Nova, Natal, RN, 59072-970, Brazil.
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de Alencar FLS, Navoni JA, do Amaral VS. The use of bacterial bioremediation of metals in aquatic environments in the twenty-first century: a systematic review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:16545-16559. [PMID: 28540556 DOI: 10.1007/s11356-017-9129-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Metal pollution is a current environmental issue as a consequence of unregulated anthropic activiy. A wide range of bioremediation strategies have been successfully implemented to recover contaminated areas. Among them, bacterial bioremediation stands out as a promising tool to confront these types of concerns. This study aimed to compare and discuss worldwide scientific evolution of bacterial potential for metal bioremediation in aquatic ecosystems. The study consisted of a systematic review, elaborated through a conceptual hypothesis model, during the period from 2000 to 2016, using PubMed, MEDLINE, and SciELO databases as data resources. The countries with the largest number of reports included in this work were India and the USA. Industrial wastewater discharge was the main subject associated to metal contamination/pollution and where bacterial bioremediations have mostly been applied. Biosorption is the main bioremediation mechanism described. Bacterial adaptation to metal presence was discussed in all the selected studies, and chromium was the most researched bioremedied substrate. Gram-negative Pseudomonas aeruginosas and the Gram-positive Bacillus subtilis bacteria were microorganisms with the greatest applicability for metal bioremediation. Most reports involved the study of genes and/or proteins related to metal metabolism and/or resistence, and Chromobacterium violaceum was the most studied. The present work shows the relevance of metal bacterial bioremediation through the high number of studies aimed at understanding the microbiological mechanisms involved. Moreover, the developed processes applied in removal and/or reducing the resulting environmental metal contaminant/pollutant load have become a current and increasingly biotechnological issue for recovering impacted areas.
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Affiliation(s)
| | - Julio Alejandro Navoni
- Development and Environment, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Viviane Souza do Amaral
- Development and Environment, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil.
- Department of Cell Biology and Genetics, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
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Daneluz D, Tessaro D. Padrão físico-químico e microbiológico da água de nascentes e poços rasos de propriedades rurais da região sudoeste do Paraná. ARQUIVOS DO INSTITUTO BIOLÓGICO 2015. [DOI: 10.1590/1808-1657000072013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Este trabalho avalia a qualidade da água em propriedades rurais do município de Dois Vizinhos, Paraná, por meio de analises físico-químicas e microbiológicas. Foram analisadas 90 amostras, sendo 45 provenientes de nascentes e 45 de poços rasos, quanto aos parâmetros pH, temperatura, turbidez, coliformes totais e termotolerantes. Das 90 amostras analisadas, 23 atenderam à legislação vigente, enquanto que 67 estavam em desacordo, logo, inapropriadas para o consumo humano e animal, representando fator de risco à saúde.
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Affiliation(s)
- Débora Daneluz
- Universidade Tecnológica Federal do Paraná (UTFPR), Brasil
| | - Dinéia Tessaro
- Universidade Tecnológica Federal do Paraná (UTFPR), Brasil
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Vistuba JP, Nagel-Hassemer ME, Lapolli FR, Recio MAL. Simultaneous adsorption of iron and manganese from aqueous solutions employing an adsorbent coal. ENVIRONMENTAL TECHNOLOGY 2013; 34:275-282. [PMID: 23530341 DOI: 10.1080/09593330.2012.692716] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, an adsorbent coal was characterized and its sorption properties for the removal of iron and manganese from aqueous solutions were determined. Energy dispersive X-ray (EDX) analysis and X-ray diffraction (XRD) identified the presence of quartz, magnetite and manganese oxide in the adsorbent coal. The results of the adsorption isotherms verified the adsorption of iron and manganese by adsorbent coal showing a linear behaviour and indicated that chemisorption and physisorption occurred. The kinetic results were best adjusted to the pseudo-second order model with a 0.999 correlation coefficient. The results showed that the adsorbent coal could be used efficiently for the removal of iron and manganese from aqueous solutions.
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Affiliation(s)
- Jacqueline Pereira Vistuba
- Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Florianópolis, Brazil
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Xavier RP, Siqueira LP, Vital FAC, Rocha FJS, Irmão JI, Calazans GMT. Microbiological quality of drinking rainwater in the inland region of Pajeú, Pernambuco, Northeast Brazil. Rev Inst Med Trop Sao Paulo 2011; 53:121-4. [PMID: 21755232 DOI: 10.1590/s0036-46652011000300001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2010] [Accepted: 02/22/2011] [Indexed: 11/22/2022] Open
Abstract
Despite all efforts to store and reduce its consumption, water is becoming less inexhaustible and its quality is falling faster. Considering that water is essential to animal life, it is necessary to adopt measures to ensure its sanitary conditions in order to be fit for consumption. The aim of this study was to analyze the microbiological quality of drinking rainwater used by rural communities of Tuparetama, a small town located in Northeast Brazil. The study covered seven rural communities, totaling 66 households. In each household two samples were collected, one from a tank and the other from a clay pot located inside the home, resulting in 132 samples (tank plus clay pot). Approximately 90% of samples were below the standard recommended by the current legislation, being considered unfit for human consumption. Part of this high microbiological contamination of drinking rainwater could be related to the lack of sanitary education and of an adequate sewerage sanitation system.
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Affiliation(s)
- Rogério Pereira Xavier
- Departamento de Antibióticos, Universidade Federal de Pernambuco, Recife, Pernambuco, Brasil
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