Cristiano Poleto

Cristiano Poleto
Universidade Federal do Rio Grande do Sul - Campus Litoral Norte | UFRGS · Departamento de Hidromecânica e Hidrologia (DHH)

Doctor of Engineering

About

82
Publications
27,271
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
480
Citations
Citations since 2017
32 Research Items
317 Citations
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060
20172018201920202021202220230102030405060

Publications

Publications (82)
Article
Full-text available
A água é um bem essencial à vida, participante da grande maioria dos processos ambientais e nas atividades humanas voltadas à produção, consumo e lazer. As avaliações dos parâmetros da água, contemplando os estudos sobre as variações espaço-temporais, as alterações nictemerais (modificações ao longo das 24h do dia) e a distribuição vertical desses...
Article
Full-text available
In cities, flooding negatively impacts the lives of its residents and passersby, who are unable to move during the phenomenon of heavy rain, with potential loss of human and material goods, coexisting with the risk of contamination through direct or indirect contact with the water retained in the pavement. With the premise of addressing this issue,...
Article
Full-text available
The present research has the objective of verifying the efficiency of a small-scale wetland for synthetic sewage treatment. The experiment consisted of three systems in series, where each system consisted of a WC without saturation (F1A, F2A and F3A), these are on the top of the laboratory bench, and a second WC (F1B, F2B, F3B), with saturation tha...
Article
Full-text available
Melanoidin is a compound produced by food industries and distilleries, which has negative impacts on the water environment due to the high content of dissolved organic carbon and dark color. Consequently, this work aims to study the catalytic properties of multilayer graphene (MLG), molybdenum oxide (MoO2), and manganese ferrite (MnFe2O4) in the oz...
Article
Measurements of suspended sediment discharge are greatly significant and represent a basic need for the initial assessment of the effects caused by this process and for the subsequent formulation of management actions. Also, considering that obtaining direct hydrosedimentological data is not a trivial and low-cost task due mainly to the special and...
Article
Full-text available
Este trabalho teve como objetivo identificar por meio da análise de composição gravimétrica dos resíduos sólidos retidos nos gradeamentos de algumas unidades operacionais do sistema de esgoto Insular do município de Florianópolis, Estado de Santa Catarina, Brasil. Foram escolhidas duas estações elevatórias de esgoto (Beira-Mar Norte e Hospital Univ...
Article
Full-text available
The presence of natural organic matter (NOM) in water does not present direct risk to the human body or to the environment. However, its presence along with other pollutants can lead to countless issues and damage human health and the environment. The hydrodynamic cavitation (HC) phenomenon started being used in the early 21st century as a process...
Article
Full-text available
Hydrodynamic cavitation has been extensively studied for its potential to remove emerging pollutants. Despite the advance of the experimental studies involving this phenomenon, computational studies that evaluate the influence of the geometry of the cavitation devices on the flow parameters are still necessary. The purpose of this article was to ev...
Article
Full-text available
The Mãe d`Água reservoir is the mouth of four streams, corresponding to an area of 352 ha and is located in the Vale Campus of the Federal University of Rio Grande do Sul. The study area is currently predominantly characterized by a residential occupation, with environmental liabilities coming from diffuse sources. The application of the methodolog...
Article
Full-text available
Surface reaeration coefficient (K2), which represents the transfer of oxygen at the air-water interface, is an important variable in aquatic ecosystems. K2 is influenced by several factors, including surfactants; furthermore, this coefficient is used in water-quality models, which requires its correct estimation. This study evaluated the effects of...
Article
Full-text available
A portion of the rural territory of the Cristal City-RS was analyzed in order to assess the natural characteristics such as pedology, geology, geomorphology, water network, climatology and the biogeography of this geographical area. For the survey, bibliographical sources such as topographic charts, survey maps of IBGE, reference sources like phyto...
Article
This study applies calculations and methodologies for the evaluation of concentrations of zinc and nickel coupled to local reference values (background). It also calculates the geoaccumulation index and the intensity of the contamination of the metals according to the deterministic classes established by current standards which set the general guid...
Chapter
One of the greatest problems observed in Brazilian urban watersheds is the amount of solid residue, domestic sewerage, and sediments that is disposed in rivers and streams. This chapter reviews the current environmental assessment approaches in use around three Brazilian states and some key issues in the field of sediment contamination, identifying...
Article
The objective of this study was to determine the erosivity index and to characterize the erosive rainfalls with respect to the far western region of Santa Catarina. Four meteorological stations were used to determine the rainfall erosivity based on the index of the product of the maximum rain intensity during a 30 min period and the kinetic energy...
Article
Full-text available
During the past 40 years, ecological risk assessments (ERA) were being performed by different organizations, using different various principles and methods, with little or no communication and inconsistencies between the different many assessment methodologies. Brazil still does not have a regulation based on quality criteria for sediments. Also, E...
Article
O Rio dos Sinos é um dos rios mais poluídos do Brasil. Este artigo apresenta um levantamento de informações a respeito da rede de monitoramento hidrológico da Bacia Hidrográfica do Rio dos Sinos, estado do Rio Grande do Sul. Almejou identificar as diversas ações institucionais para avaliação da qualidade de água do rio. Foi realizada uma pesquisa d...
Article
Full-text available
O conhecimento espacial do potencial erosivo das chuvas associado às informações das características do relevo e tipos de solos permitem identificar as regiões com maiores riscos de erosão, deslizamentos ou escorregamentos. A determinação dos valores de erosividade, ao longo do ano, também permite identificar os meses nos quais os riscos de perdas...
Article
Because of the relation between water quality and sediment quantity, the quantification of sediments in rivers and open channels is of utmost importance. This paper applies the theory of entropy to determine sediment concentration. A major limitation in applying the theory of entropy is the large number of parameters used in the model. To solve the...
Article
The objective of this study was to determine the concentrations of trace elements in sediment samples taken from impermeable urban areas of a city with predominantly agroindustrial development characteristics. For this, samples were taken every month from paved streets in the city of Toledo, Paraná State (PR), Brazil. Thus, trace element levels wer...
Article
Full-text available
RESUMO O sedimento encontrado na seção transversal de rios ou reservatórios é resultado das interações ocorridas em uma bacia hidrográfica, sejam elas decorrentes de fatores naturais ou antrópicos. Apesar da quantidade de sedimentos no rio ser o resultado dos processos que acontecem dentro da bacia, os métodos de estimativa de sedimentos baseados n...
Article
Full-text available
O conhecimento das características da chuva erosiva é importantes para estudar os processos erosivos e permitir as simulações hidrológicas com chuvas mais parecidas com as reais. O índice EI30 que é utilizado para caracterizar a erosividade das chuvas representa os efeitos do impacto das gotas de chuva combinado com a capacidade de transporte do es...
Article
Full-text available
A erosão hídrica é um dos maiores problemas ambientais, determinando a redução da produtividade agrícola e também contaminação e poluição dos recursos hídricos. Este trabalho teve como objetivos determinar o potencial erosivo das chuvas da região de Florianópolis (SC), avaliar a variação sazonal da erosividade, determinar as probabilidades de ocorr...
Article
The quantification of a chemical species isolated in natural waters does not allow the characterization of it as an environmental stressor. Therefore, it is necessary to associate different lines of research that allows the evaluation of risk on the water system. In this perspective, this study carries out approaches based on distinct research line...
Article
Water scarcity and floods caused by the effects of climate variability have been alarming and victimizing many people and alerting the authorities around the world, which has been promoting investments in the area. Nowadays, it is a global consensus that the best alternative for Water Resources Management is the Integrated approach, which combines...
Article
Full-text available
The Mãe d’Água dam was built in 1962 to supply the Federal University of Rio Grande do Sul’s water demanding. Thus, the paper aims to measure Nickel (Ni) and Zinc (Zn) concentrations in many depths of the dam’s bottom, sampling cores of sediments silted in it. The samplings were carried out in June, 2014, and it was sampled four sediment cores in p...
Article
Purpose This study presents a comparative analysis of water quality data in an urban micro watershed to study the magnitude of impacts on the water quality parameters over the last decade. The purpose of this paper is to evaluate the degree of deterioration using the water quality index. Design/methodology/approach Rapid urban growth without pro...
Article
Purpose The purpose of this paper is to analyse the results of particle size profiles carried out in the dam Mãe d’água, located in the metropolitan region of Porto Alegre, Rio Grande do Sul, becoming a tool of support for geochemistry evaluation works of sediments in this basin. Design/methodology/approach The methodology comprised the particle...
Article
This study aimed to determine the granulometric and mineralogical composition and the contents of trace elements Cr, Ni and Pb in sediments collected in impermeable streets located in the urban perimeter of Toledo PR, Brazil. The mineralogical analyses were performed by a diffractometer, the granulometric by integrated sieving methods and laser dif...
Article
Full-text available
The concern with water quality has been promoting development of better monitoring and control techniques every day. As sediments transport most of water contaminants, their study is fundamental. Given the large number of variables for estimating sediment concentration and high costs of monitoring campaigns, it becomes necessary to develop more acc...
Article
This study aimed to determine the granulometric and mineralogical composition and the Cr, Ni and Pb trace element content in sediments collected from impermeable streets located in the urban perimeter of Toledo, PR, Brazil. The mineralogical analyses were performed by a diffractometer, the granulometric analyses by integrated sieving methods and la...
Article
This article aims to assess the concentrations of Zinc and Nickel and the organic matter content in different depths sampled of sediments produced in this river basin of the Mãe d´Água dam. The samplings were carried out in June, 2014, and it was sampled four sediment cores in pre-defined points of the dam. For the extraction of sediment cores was...
Article
Full-text available
Purpose This study aims to quantify and characterise sediments accumulated in the street gutters in an urban area of Poços de Caldas, Brazil. The main research questions are: What type of urban areas, e.g. those under construction, produce most sediments and what are the main characteristics of such sediments? What differences, e.g. granulometry, c...
Article
The heavy metals contained in sediments may be responsible for constant degradation of rivers' water quality, which circulate in an urban environment. Therefore, this study shows the pollution index and enrichment factor for each of these elements in river sediments. It was used the optical emission spectrometry with inductively coupled plasma (ICP...
Article
Full-text available
Resumo The United Nations [UN] declared 2015 as the International Year of Soils and hopes that this initiative will serve to mobilize society for the importance of soil as a key part of the environment and the dangers surrounding their degradation in the world. The work will address the desertification process in Argentinian Patagonia, in order to...
Poster
Full-text available
Problems related to the loss of soil and archaeological data in the agricultural and rural context as a consequence of mechanization and pedoturbation processes in micro watersheds in the municipality of Cristal, state of Rio Grande do Sul.
Article
Full-text available
The sediments are active environmental compartments capable of interchanging the chemical species with the water column, degrading their quality and influencing the toxicity of the matrix. The average concentrations of sediment-associated metallic species have been used to evaluate the extent of their contamination. The approaches used have progres...
Poster
Full-text available
O crescimento urbano nas proximidades de ecossistemas aquáticos pode levar à degradação da qualidade das águas, bem como à supressão e/ou substituição da vegetação nativa, acarretando em prejuízos expressivos aos ecossistemas aquáticos e a saúde pública. A rápida urbanização e consequente aumento de áreas impermeáveis, o uso inadequado do solo e o...
Poster
Full-text available
No contexto do saneamento urbano, por mais abrangentes que sejam as políticas públicas específicas e por maior que tenham sido os esforços nas esferas política, técnica e econômica para conter e controlar a poluição urbana, ainda é insipiente a atenção que se dá em relação à poluição difusa proveniente da ocupação urbana em geral e principalmente n...
Article
Purpose Brazilian sediment quality criteria were established based on pseudo-total metal contents, which is not suitable to determine their bioavailability and the ecological risk for aquatic biota. Therefore, the geochemical speciation of five metals (Cu, Fe, Ni, Pb and Zn) was determined to assess the distribution and ecological risk of sediments...
Article
This study performed a multivariate analysis about the water quality of rivers that go across the urban perimeter of Toledo - PR. For this study five rivers were chosen, where the physicochemical data of the water was collected as sediment samples to determine the amounts of copper and zinc with the use of spectrometry of optical emission with indu...
Article
Full-text available
http://dx.doi.org/10.5007/1807-1384.2015v12n2p200 Estudar a relação ser humano com seu ambiente é uma tarefa difícil. Com a evolução cada vez mais acelerada da espécie, o ser humano adquiriu muitas habilidades e conheceu novos avanços científicos em prol de seu benefício, porém causou desequilíbrios ambientais alarmantes. Nesse contexto, observa-s...
Article
Full-text available
Inundacoes sao fenomenos que ocorrem em diversas regioes do mundo, caracterizadas por situacoes onde ocorre o transbordamento do rio. Normalmente as maiores proporcoes ocorrem em areas urbanas. Usa-se o nome de enchente a situacao natural de transbordamento de agua do leito do rio, ja as inundacoes estao relacionadas a intensificacao desse processo...
Article
Full-text available
Quality reference values support the establishment of soil screening levels for contaminants that may be used to identify areas needing further investigation. Determination of a unique background has been defined for individual elements across a whole country, such as Brazil, which could give rise to either over-or underestimation of metal contamin...
Article
Full-text available
In hydrosedimentology studies the determination of the trace element concentrations at the study site is imperative, since this background can be used to assess the enrichment of sediments with these elements. This enrichment can be the result of the natural process of geological formation or of anthropogenic activities. In the latter case, guideli...
Article
Purpose This study investigated the behavior of cadmium (Cd), lead (Pb), nickel (Ni), and zinc (Zn) in urban sediments collected in commercial, residential, and industrial areas of the city of Porto Alegre, Brazil, and evaluated different degrees of pollution in this urban subdrainage basin through the use of the geoaccumulation index (Igeo). Mate...
Article
IntroductionRecently, hydrosedimentological investigations have gained increasing attention from society due to a broader understanding and appreciation of the socioeconomic and environmental impacts of erosion and sedimentation processes. In Latin America, where much of the produced electricity comes from hydroelectric power plants and where land...
Article
Environmental studies of watersheds require distinguishing the concentrations of trace elements naturally present from those of anthropogenic contributions. Thus, the establishment of geochemical background values is one of the most important issues of recent environmental science and may involve significant implications in the fields of geology, t...
Article
Full-text available
O presente trabalho teve como finalidade a caracterizacao ambiental e a analise das concentracoes de oxigenio dissolvido (mg/L) no reservatorio do Parque das Acacias - Uberaba (MG). Para a caracterizacao ambiental, foi realizado um levantamento bibliografico, bem como, visitas aos orgaos publicos. O levantamento de campo foi feito utilizando equipa...
Article
Full-text available
RESUMO: A cidade de Uberaba é uma cidade em constante crescimento, sendo a 8ª cidade mais populosa do estado mineiro. Várias ações por parte da prefeitura municipal visam reduzir o impacto da crescente urbanização da referida cidade, que sofre frequentes inundações em sua área central. Nesse âmbito, foi proposto o Projeto Água Viva I e II, amparado...
Chapter
Full-text available
O presente capítulo se propõe a apresentar e discutir algumas metodologias e seus instrumentos de relevante importância para o estudo de constituintes de solo e sedimento. Uma atenção especial será dada às metodologias que permitem o estudo da proporção de tamanho das partículas e da natureza mineralógica dos constituintes presentes nos sedimentos.
Article
O processo de urbanização acarretou inúmeras alterações ambientais, modificando o funcionamento do ciclo hidrológico local, provocando frequentes enchentes, diminuição da infiltração de água no solo e erosões. Uma nova alternativa para auxiliar na melhoria do equilíbrio ambiental de bacias hidrográficas urbanas é o SUDS (Sustainable Urban Drainage...
Article
Full-text available
Os rios ao atravessarem áreas urbanas sofrem alterações tanto na qualidade da água, quanto na sua morfologia, pelos profundos impactos causados pela ação antrópica. Esse trabalho procurou avaliar essas questões por meio de um estudo de caso conduzido em uma bacia hidrográfica urbana na região metropolitana de Porto Alegre. Foram utilizados levantam...
Article
Os sedimentos urbanos são considerados, atualmente, como a maior fonte de poluição difusa para os corpos de água em áreas urbanas devido ao transporte de metais pesados e outros poluentes. Metais pesados são considerados potencialmente perigosos devido ao seu potencial tóxico e bio-acumulativo, ainda que em pequenas concentrações. A dinâmica do pro...
Article
Heavy metals, like lead (Pb), are subproducts of industrial activities; however, in recent years, studies have shown that even in non-industrial areas, elevated concentrations ofthis element have been found. In this study, Pb concentrations were measured in 20 composite samples of urban sediments collected in an urban watershed of 4.85 km2 with thr...
Conference Paper
Full-text available
The urbanization process in an accelerated and often disorder way has generated strong impacts on the environment, principally in reference to its water resources. This degradation is not simply limited to reduction of the quantity of water available and its uses, but also brings about loss in its quality, and in many cases this becomes irreversibl...
Article
Full-text available
A difração de raios laser (DL) oferece grande detalhamento da distribuição de tamanho de partículas. Sua aplicação em testes de estabilidade de agregados de solo pode auxiliar o estudo sobre a agregação de solos com propriedades eletroquímicas discrepantes. Nesse sentido, os objetivos do presente trabalho foram: propor um protocolo de uso da DL par...
Chapter
IntroductionThe urban aquatic environmentThe characteristics of urban sedimentUrban sediment qualityTransport of particulate-associated pollutants in urban aquatic environments; partitioning and speciationSustainable drainage systemsConclusions References
Chapter
Sediments in aqueous systems are of increasing interest to academics, researchers, practitioners and stakeholders around the world. This book not only covers the characteristics of the sediments themselves, but also their physico-chemical impact on aquatic habitats and subsequent management implications. There is a strong focus on methods and instr...
Article
O presente trabalho teve como objetivo monitorar e avaliar a qualidade da água na microbacia hidrográfica do Córrego do Ipê, Município de Ilha Solteira, Estado de São Paulo, e o seu estado de degradação associado à utilização da área de entorno. Para isto, quinzenalmente, no período de março a dezembro de 2002, foram coletadas amostras de água em t...
Article
Full-text available
This paper has the object monitoring and analyzing the water quality of the Córrego do Ipê Micro Basin, in Ilha Solteira City, São Paulo State, and its degradation stage in association to the utilization of the surrounding area. Thus, once every fifteen days, in the period between March and December of 2002, water samples were collected at three po...
Article
Full-text available
Soil particles eroded from the land surface and transported into rivers by runoff are considered one of the main components of non-point source pollution in urban watersheds. These particles also serve as a vector for a wide variety of both organic and inorganic constituents. As a result, the identification of sediment sources in an urban watershed...
Article
Os recursos hídricos em bacias urbanas têm sido severamente prejudicados não só pelas alterações hidrológicas, mas especialmente pela carga poluente que é transferida da bacia vertente para os corpos d’água. Por isto, o presente trabalho pretende apresentar o resultado de análises de digestão ácida de sedimentos fluviais em suspensão em uma bacia u...
Article
Full-text available
Background, aim and scopeStudies of particulate-associated pollutants, or PAPs, in urban areas have become necessary due to their potentially deleterious effects on the environment. However, it is not just the sediments themselves which are problematic but also their particle size composition, which has a great influence on their capacity to adsorb...
Article
The sediments carried by runoff water are an important part of this process because their presence in the bodies of water not only cause sedimentation problems but, mainly, they contaminate the water due to the presence of the pollutants found associated with sediments. The urban subwatershed under study is located in the metropolitan region of Por...
Article
Full-text available
Water resources have been severely damaged by hydrologic alterations and especially by pollutants transferred from the urban watershed. This paper presents results of total acid analysis of suspended sediments in an urban watershed and establishes comparisons with three different sets of Guidelines and local background results. The watershed studie...
Article
Full-text available
One of the greatest problems observed in Brazilian urban watersheds are concerned to the amount of solid residues, domestic sewerage and sediments that are disposed in the rivers and streams that drain those areas. This project aims to present these problems through a study of case taken in an urban watershed in Porto Alegre city, Southern Brazil....
Article
Full-text available
RESUMO --- Dentre os principais problemas que envolvem os estudos voltados aos recursos hídricos estão a falta de mão-de-obra qualificada e os elevados custos financeiros. Por isto, o presente trabalho pretende apresentar o resultado da otimização da utilização de dados obtidos em estudos de extração seqüencial de metais baseado na metodologia de T...
Article
Full-text available
This research had the purpose to perform investigations aboutcountrysides inside the Ipê stream watershed and their owners, in Ilha Solteira, São Paulo State, Brazil, trying to observe environmental problems and how the people perceive them. Fortnight analyses of total solids were done in three different sites onthe stream, as well as questionnaire...
Presentation
O presente trabalho mostra como a falta de informação e o mau dimensionamento do Posto de Trabalho influenciam no rendimento das tarefas executadas por funcionários de uma empresa. O levantamento dos problemas e do layout deste Posto de Trabalho - P.T – em ambiente de escritório, ajudou a determinar as correções necessárias para um melhor desenvolv...
Presentation
Full-text available
O presente trabalho mostra como a falta de informação e o mau dimensionamento do Posto de Trabalho influenciam no rendimento das tarefas executadas por funcionários de uma empresa. O levantamento dos problemas e do layout deste Posto de Trabalho - P.T – em ambiente de escritório, ajudou a determinar as correções necessárias para um melhor desenvolv...
Article
Full-text available
In recent decades, Brazil advanced juridically with the creation of specific legislation for water resource management in the country. But, in spite of this Law being from 1997, the States of the Confederation are still confronting difficulties in implanting its plans and projects, principally in regard to territorial planning with due environmenta...
Article
The growing increase in metal concentrations in urban areas has been documented in innumerable scientific studies. In a general way, urban sediments end up being their transporting agent and upon entering into bodies of water, they release these loads constituted of innumerable pollutants, principally metals like zinc and nickel. For that reason, t...
Article
Urban environments may be considered as sources of pollution and, consequently, important agents in degradation of bodies of water due to the input of a large quantity of substances, principally heavy metals, which are transported from the drainage basin through surface run-off. Heavy metals like lead (Pb), cadmium (Cd), nickel (Ni) and zinc (Zn) a...

Network

Cited By