cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7512086.v1
title: Analysis of metallic, pesticide, physico-chemical and microbiological parameters of waters near the Dr. John Penido Dam, Juiz de Fora, MG

description: The Dr. John Penido Dam is the main source of water supply of the city of Juiz de Fora, located in southeastern Brazil. This study analyzed metals, agro toxics, and some physico-chemical and microbiological parameters in water samples taken near the dam, and checked their conformity to limits specified in the pertinent legislation (Brasil, 2004;2011; CONAMA, 2005). Eight samples were collected at five points of the reservoir between July 2011 and March 2013. The following physicochemical and microbiological parameters were analyzed: water temperature, dissolved oxygen, pH, conductivity, color, turbidity, total solids, demand biochemical oxygen, nitrate, nitrite, ammonia, total nitrogen, total phosphorus, chlorophyll a, total and thermo-tolerant coliforms. Every agro toxic mentioned in Ordinances MS/GM 518/2005 and 2.914/2011 of the Ministry of Health (Brazil, 2004; 2011) was analyzed. The total and dissolved metals tested included: copper, chromium, cadmium, lead, nickel, zinc, manganese, iron, sodium, potassium and calcium. The correlation between the results was accomplished using data mining technique (Data Mining). The results showed that the levels of metals in the water are below the CONAMA parameters, with exceptions of iron and zinc. The following other parameters also showed disagreement: biochemical oxygen demand, dissolved oxygen, total phosphorus and thermo-tolerant coliforms. Agro toxics were also below the limits of quantification of the methods employed, and were therefore within the limits established by the Ministry of Health Ordinances. The results and correlations indicate that the weathering, runoff and forms of use and occupation of the watershed interfere with the aquatic ecosystem. This study provides information useful to planning the preservation and restoration of the water quality of the supply source.
DOI: 10.17632/zcgj9t8f25.4
title: Technological scenarios for the new normality in latin american academic libraries (Survey Results)

description: The study began by defining the research question: How did information technologies impact Latin American academic libraries during the period of social isolation? The tool consists of questions related to technologies, services, users, training of librarians, and finally, questions about their future perspectives. QuestionPro was chosen as the software for information processing. After a final review of the instrument, a pilot test was carried out resulting in fifteen questionnaires that are being completed by librarians from seven Latin American countries. After asking and developing some more detailed questions, a final version was structured and distributed to a community of librarians who participated in a web seminar called "From Automation to Discovery": Information Technologies in the Academic Library" by the Universidad Nacional Autónoma de México A total of 1638 participants began the survey of which 1144 were able to complete it. Of these, only the information of 749 participants who are within the category of university academic libraries was analyzed.
DOI: 10.6084/m9.figshare.7512086
title: Analysis of metallic, pesticide, physico-chemical and microbiological parameters of waters near the Dr. John Penido Dam, Juiz de Fora, MG

description: The Dr. John Penido Dam is the main source of water supply of the city of Juiz de Fora, located in southeastern Brazil. This study analyzed metals, agro toxics, and some physico-chemical and microbiological parameters in water samples taken near the dam, and checked their conformity to limits specified in the pertinent legislation (Brasil, 2004;2011; CONAMA, 2005). Eight samples were collected at five points of the reservoir between July 2011 and March 2013. The following physicochemical and microbiological parameters were analyzed: water temperature, dissolved oxygen, pH, conductivity, color, turbidity, total solids, demand biochemical oxygen, nitrate, nitrite, ammonia, total nitrogen, total phosphorus, chlorophyll a, total and thermo-tolerant coliforms. Every agro toxic mentioned in Ordinances MS/GM 518/2005 and 2.914/2011 of the Ministry of Health (Brazil, 2004; 2011) was analyzed. The total and dissolved metals tested included: copper, chromium, cadmium, lead, nickel, zinc, manganese, iron, sodium, potassium and calcium. The correlation between the results was accomplished using data mining technique (Data Mining). The results showed that the levels of metals in the water are below the CONAMA parameters, with exceptions of iron and zinc. The following other parameters also showed disagreement: biochemical oxygen demand, dissolved oxygen, total phosphorus and thermo-tolerant coliforms. Agro toxics were also below the limits of quantification of the methods employed, and were therefore within the limits established by the Ministry of Health Ordinances. The results and correlations indicate that the weathering, runoff and forms of use and occupation of the watershed interfere with the aquatic ecosystem. This study provides information useful to planning the preservation and restoration of the water quality of the supply source.
DOI: 10.6084/m9.figshare.7512404
title: Performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry

description: This paper describes the performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry. The effluent consists of vegetal oil and phenol. The treatment plant is designed to treat 4 m3 h-1 and consists of a pre-treatment for oil removal, a Fenton reactor and an extended aeration tank. Internal and external analyses of the effluent were performed in order to evaluate the treatment plant. The overall efficiency of phenol removal was higher than 99.7%. It was demonstrated that the combination of biological and advanced oxidative process is a promising method of removing recalcitrant contaminants.
DOI: 10.6084/m9.figshare.7512404.v1
title: Performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry

description: This paper describes the performance of a Fenton reactor on an industrial scale applied to the removal of phenols in a waste recovery plant from the pulp and paper industry. The effluent consists of vegetal oil and phenol. The treatment plant is designed to treat 4 m3 h-1 and consists of a pre-treatment for oil removal, a Fenton reactor and an extended aeration tank. Internal and external analyses of the effluent were performed in order to evaluate the treatment plant. The overall efficiency of phenol removal was higher than 99.7%. It was demonstrated that the combination of biological and advanced oxidative process is a promising method of removing recalcitrant contaminants.
DOI: 10.6084/m9.figshare.7512812
title: Development and challenges in Brazilian municipal solid waste management

description: The generation of municipal solid waste (MSW) has increased over time in Brazil, along with changes in waste quality, which gives rise to discussions regarding the importance of properly managing and disposing of these wastes. Currently, issues involving the management of MSW have a central focus in carrying out public policies. Effective implementation of the National Solid Waste Policy (NSWP) - Law nº. 12,305/2010 is expected to bring changes in the panorama of solid waste in Brazil. This work is a review of literature that aims to address some aspects of the MSW in Brazil, considering some changes expected to occur in the public sector after NSWP implementation. Some data is presented and discussed in order to foster an understanding of the evolution of MSW management in Brazil and to highlight challenges for the NSWP compliance with regulation, such as the expansion of the collection and treatment of MSW, more active societal involvement in waste-separation processes and the difficulty of eradicating open dumps and replacing them with landfills. In general, while there were improvements in MSW management, they were insufficient to address the changes proposed by the NSWP in order to establish integrated MSW management that would be effective and sustainable for both the environment and society. This indicates the need for urgent change in the structure of the MSW sector in Brazil.
DOI: 10.6084/m9.figshare.7512812.v1
title: Development and challenges in Brazilian municipal solid waste management

description: The generation of municipal solid waste (MSW) has increased over time in Brazil, along with changes in waste quality, which gives rise to discussions regarding the importance of properly managing and disposing of these wastes. Currently, issues involving the management of MSW have a central focus in carrying out public policies. Effective implementation of the National Solid Waste Policy (NSWP) - Law nº. 12,305/2010 is expected to bring changes in the panorama of solid waste in Brazil. This work is a review of literature that aims to address some aspects of the MSW in Brazil, considering some changes expected to occur in the public sector after NSWP implementation. Some data is presented and discussed in order to foster an understanding of the evolution of MSW management in Brazil and to highlight challenges for the NSWP compliance with regulation, such as the expansion of the collection and treatment of MSW, more active societal involvement in waste-separation processes and the difficulty of eradicating open dumps and replacing them with landfills. In general, while there were improvements in MSW management, they were insufficient to address the changes proposed by the NSWP in order to establish integrated MSW management that would be effective and sustainable for both the environment and society. This indicates the need for urgent change in the structure of the MSW sector in Brazil.
DOI: 10.17632/2r7sbwv3sk.5
title: Livestock manure management-A holistic approach in explaining farmers' intentional behaviour on manure waste utilization

description: SEM Analysis for the original TBP model & questionnaire form
DOI: 10.6084/m9.figshare.7509068
title: Evaluation of Phenol and Bisphenol A (BPA) adsorption in commercial activated carbon from different carbonaceous matrices

description: The removal of toxic organic compounds and organic micro-pollutants from industrial wastewater is a current and growing concern to improve water quality for reuse. To improve water quality, some treatments have been shown to be effective, such as the activated carbon adsorption treatment. This study evaluated the adsorption of phenol and bisphenol A (BPA) onto activated carbon from two different carbonaceous matrices: bituminous (CB) and vegetable (CV). The activated carbons were characterized by scanning electron microscopy (SEM) equipped with an energy dispersive spectrometer (EDS), Fourier-transformed infrared spectroscopy (FTIR) and BET (Brunauer et al., 1938) surface area. Assays were performed to determine equilibrium time and adsorption isotherms (Freundlich and Langmuir). Adsorption onto the two types of carbons favored phenol removal, resulting in 96% for the CB carbon and 91% of phenol removal for CV carbon. However, the adsorption of bisphenol A was efficient only for the CB carbon, resulting in 90% and 20% of BPA removal for CB and CV, respectively. The adsorptive capacities determined for CB carbon were 125 mg phenol.g-1 and 76 mg BPA.g-1, and for CV carbon were 99 mg phenol.g-1 and 27 mg BPA.g-1. The results are related to the presence of acid groups in CV carbon and to the hydrophobicity of BPA, which makes the adsorption process unfavorable.
DOI: 10.6084/m9.figshare.7509068.v1
title: Evaluation of Phenol and Bisphenol A (BPA) adsorption in commercial activated carbon from different carbonaceous matrices

description: The removal of toxic organic compounds and organic micro-pollutants from industrial wastewater is a current and growing concern to improve water quality for reuse. To improve water quality, some treatments have been shown to be effective, such as the activated carbon adsorption treatment. This study evaluated the adsorption of phenol and bisphenol A (BPA) onto activated carbon from two different carbonaceous matrices: bituminous (CB) and vegetable (CV). The activated carbons were characterized by scanning electron microscopy (SEM) equipped with an energy dispersive spectrometer (EDS), Fourier-transformed infrared spectroscopy (FTIR) and BET (Brunauer et al., 1938) surface area. Assays were performed to determine equilibrium time and adsorption isotherms (Freundlich and Langmuir). Adsorption onto the two types of carbons favored phenol removal, resulting in 96% for the CB carbon and 91% of phenol removal for CV carbon. However, the adsorption of bisphenol A was efficient only for the CB carbon, resulting in 90% and 20% of BPA removal for CB and CV, respectively. The adsorptive capacities determined for CB carbon were 125 mg phenol.g-1 and 76 mg BPA.g-1, and for CV carbon were 99 mg phenol.g-1 and 27 mg BPA.g-1. The results are related to the presence of acid groups in CV carbon and to the hydrophobicity of BPA, which makes the adsorption process unfavorable.
DOI: 10.6084/m9.figshare.7519256
title: Impacts of urban life on water quality and fish larvae communities in two creeks of the Brazilian Amazon

description: Abstract This study investigated the impact of anthropogenic activities in Belém City, Brazilian Amazon, by comparing water quality and fish larvae communities in two creeks that flow into the Guamá River. One creek crossed a poor and crowded suburb of Belém while the other was located in an island section that was declared an Environmental Protected Area in 1997. Two sampling points were set in each creek and monitored over eight hours once every three months over a one-year period. Strong variations of water quality were registered all year long and at all tides in Belém's mainland creek, along with, among other things, a very high number of thermotolerant coliforms. Few larvae were found. The water was considered unsuitable for human use and activities as well as for aquatic life. The island creek presented early signs of bacterial and nutrient contaminations during the rainy season, probably partly related to non-point source pollution. In both creeks, larvae communities were almost exclusively composed of clupeiforms. All larval development stages were encountered. Higher densities and proportion of newly hatched larvae were registered during the dry season and associated with the presence of nitrate. The results of the study show that adequate sewage and drainage systems must be developed in the city and suggest that it would be useful to conduct an integrated ambient monitoring study in Combú Creek.
DOI: 10.6084/m9.figshare.7519256.v1
title: Impacts of urban life on water quality and fish larvae communities in two creeks of the Brazilian Amazon

description: Abstract This study investigated the impact of anthropogenic activities in Belém City, Brazilian Amazon, by comparing water quality and fish larvae communities in two creeks that flow into the Guamá River. One creek crossed a poor and crowded suburb of Belém while the other was located in an island section that was declared an Environmental Protected Area in 1997. Two sampling points were set in each creek and monitored over eight hours once every three months over a one-year period. Strong variations of water quality were registered all year long and at all tides in Belém's mainland creek, along with, among other things, a very high number of thermotolerant coliforms. Few larvae were found. The water was considered unsuitable for human use and activities as well as for aquatic life. The island creek presented early signs of bacterial and nutrient contaminations during the rainy season, probably partly related to non-point source pollution. In both creeks, larvae communities were almost exclusively composed of clupeiforms. All larval development stages were encountered. Higher densities and proportion of newly hatched larvae were registered during the dry season and associated with the presence of nitrate. The results of the study show that adequate sewage and drainage systems must be developed in the city and suggest that it would be useful to conduct an integrated ambient monitoring study in Combú Creek.
DOI: 10.6084/m9.figshare.7515011
title: Topographical, soil and climatic influences in an Atlantic Forest remnant in Serra da Mantiqueira, Minas Gerais State

description: Understanding the correlations among environmental variables and species distribution in a forest, including its dynamics and carbon storage, is one of the main goals in forest ecology. Therefore, the present study aimed to correlate aspects of vegetation to soil and climatic variables of a forest remnant in Bocaina de Minas, Serra da Mantiqueira, MG. Multivariate ordination techniques (PCA and CCA) and multiple regressions were used to represent these correlations. Altitude was highlighted as a synthetic environmental variable, comprising several gradients within the area (especially edaphic and conservation). This was the variable that best explained the distribution of species, forest dynamics and carbon stock in the area.
DOI: 10.6084/m9.figshare.7515011.v1
title: Topographical, soil and climatic influences in an Atlantic Forest remnant in Serra da Mantiqueira, Minas Gerais State

description: Understanding the correlations among environmental variables and species distribution in a forest, including its dynamics and carbon storage, is one of the main goals in forest ecology. Therefore, the present study aimed to correlate aspects of vegetation to soil and climatic variables of a forest remnant in Bocaina de Minas, Serra da Mantiqueira, MG. Multivariate ordination techniques (PCA and CCA) and multiple regressions were used to represent these correlations. Altitude was highlighted as a synthetic environmental variable, comprising several gradients within the area (especially edaphic and conservation). This was the variable that best explained the distribution of species, forest dynamics and carbon stock in the area.
DOI: 10.6084/m9.figshare.7518377
title: Peroxidase of Brazilian Cerrado grass as an alternative for agro industrial waste treatment

description: Abstract Decontamination of wastewater continues to be a challenge for society and the scientific community. Despite the availability of various materials for study, enzymes stand out due to their specificity for decomposition and biodegradability for disposal. New sources of enzymes may represent efficient and low-cost alternatives compared to routinely used techniques. In this survey, the peroxidase profile from Echinolaena inflexa fruits was studied for possible applications in the treatment of wastewater. The protein content was found to be 5.33 mg g-1. The optimum reaction conditions were: 50°C, pH 7.5 at 0.1 mol L-1 of phosphate buffer for 15 min. The enzyme was inactivated after 5 min at 94°C and was inhibited when incubated with ascorbic acid at 10 mmol L-1. In tests using phenols and agro industrial waste, the peroxidase was able to oxidase 87.5% of catechol, 67.8% of pyrogallol, 39.1% of resorcinol and still presented 29.1% of the degradation capacity of raw wastewater phenolic compounds. The results showed that the Echinolaena inflexa peroxidase, a new source of enzymes, is a potential alternative to wastewater treatment.
DOI: 10.6084/m9.figshare.7518377.v1
title: Peroxidase of Brazilian Cerrado grass as an alternative for agro industrial waste treatment

description: Abstract Decontamination of wastewater continues to be a challenge for society and the scientific community. Despite the availability of various materials for study, enzymes stand out due to their specificity for decomposition and biodegradability for disposal. New sources of enzymes may represent efficient and low-cost alternatives compared to routinely used techniques. In this survey, the peroxidase profile from Echinolaena inflexa fruits was studied for possible applications in the treatment of wastewater. The protein content was found to be 5.33 mg g-1. The optimum reaction conditions were: 50°C, pH 7.5 at 0.1 mol L-1 of phosphate buffer for 15 min. The enzyme was inactivated after 5 min at 94°C and was inhibited when incubated with ascorbic acid at 10 mmol L-1. In tests using phenols and agro industrial waste, the peroxidase was able to oxidase 87.5% of catechol, 67.8% of pyrogallol, 39.1% of resorcinol and still presented 29.1% of the degradation capacity of raw wastewater phenolic compounds. The results showed that the Echinolaena inflexa peroxidase, a new source of enzymes, is a potential alternative to wastewater treatment.
DOI: 10.6084/m9.figshare.7517936
title: Water quality near three sources of potential contamination of the Taquari River - RS

description: Abstract The Taquari Valley has several food industries and tanneries which release their effluents into the Taquari River, as well as a cemetery in a Permanent Preservation Area in Muçum town. This study performed physicochemical and microbiological analyses of water from before and after three Taquari River sites considered potentially polluting and compared the results of those samples. The chosen sites were a cemetery and a tannery in Muçum and a tannery next to a poultry processing plant located in Roca Sales. We analyzed pH, turbidity, dissolved oxygen (O2), total nitrogen (N) and thermotolerant coliforms. We also isolated Escherichia coli and performed resistance tests to neomycin, rifampicin, clindamycin and penicillin antibiotics. The physicochemical analyses showed that only turbidity, in four out of the six analyzed spots, had values above the established threshold of class I water. These elevated values are probably of inorganic origin. Bacteria isolated from the samples collected after the cemetery and both before and after the Roca Sales industries were sensitive to neomycin, rifampicin and clindamycin, and resistant to penicillin. It can be concluded, therefore, that even the release of the pollutant effluents does not substantially interfere with the water quality of the three analyzed sites.
DOI: 10.6084/m9.figshare.7517936.v1
title: Water quality near three sources of potential contamination of the Taquari River - RS

description: Abstract The Taquari Valley has several food industries and tanneries which release their effluents into the Taquari River, as well as a cemetery in a Permanent Preservation Area in Muçum town. This study performed physicochemical and microbiological analyses of water from before and after three Taquari River sites considered potentially polluting and compared the results of those samples. The chosen sites were a cemetery and a tannery in Muçum and a tannery next to a poultry processing plant located in Roca Sales. We analyzed pH, turbidity, dissolved oxygen (O2), total nitrogen (N) and thermotolerant coliforms. We also isolated Escherichia coli and performed resistance tests to neomycin, rifampicin, clindamycin and penicillin antibiotics. The physicochemical analyses showed that only turbidity, in four out of the six analyzed spots, had values above the established threshold of class I water. These elevated values are probably of inorganic origin. Bacteria isolated from the samples collected after the cemetery and both before and after the Roca Sales industries were sensitive to neomycin, rifampicin and clindamycin, and resistant to penicillin. It can be concluded, therefore, that even the release of the pollutant effluents does not substantially interfere with the water quality of the three analyzed sites.