Development of a Dredging Sensitivity Index, applied to an industrialized coastal environment in Brazil

Trevisan, Cleuza Leatriz; Vicente, Murilo Carvalho; Rocha, Bruno Cesar S.; Wasserman, Julio César

doi:10.1016/j.scitotenv.2020.141294

Cited by 18 publications

(4 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The São Francisco Canal mouth is low energy system, resulting lack of wind or tide currents and weak wave power (Carvalho et al 2021). Nonetheless, the São Francisco Canal is the outlet of an industrial and populated drainage basin and may carry a considerable load of organic matter discharging into the bay (Trevisan et al 2020). These characteristics promote the settling of large amounts of organic matter and the accumulation of sediments.…”

Section: Resultsmentioning

confidence: 99%

“…The industrial complex contributes with many industrial diffuse sources of contaminants, including from metal smelting, paper and pulp, chemicals, plastics, and rubbers. Domestic and commercial sewage, domestic wastes, harbor, and navigations contaminations also constitute relevant sources (Trevisan et al 2020). Since the 1980's, this region is subject to environmental concern, mainly because of the identi cation of Cd and Zn contamination in the sediments (Lacerda and Molisani 2006), originated from a metal smelting industry (Ingá Metais) which disposed large amounts of these contaminants every year in the Sepetiba Bay (Molisani et al 2004).…”

Section: Study Areamentioning

confidence: 99%

See 1 more Smart Citation

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

Vicente

Trevisan

Oliveira

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

The Sepetiba Bay (Southeast Brazil) is a known Cd and Zn contaminated site that received spills of a large slag pile leachate from a Zn smelter. With important harbors, Sepetiba Bay demands periodic dredging operations which affect directly on the mobility of the metals. The main goal of this work was to assess metal mobility in sediments of a simulated dredging area in this tropical bay. To achieve this goal 18 superficial sediment samples were collected within this simulated area. pH and Eh of the interstitial water were measured in situ, while the sediments were analyzed for grain size, organic carbon and total nitrogen, total metals. Metal mobility assessment was evaluated with a sequential extraction procedure, proposed by the European Community Bureau of Reference (BCR). The results demonstrate that Cd and Zn are mainly associated with the exchangeable fraction (mean concentrations 1.4 mg kg− 1 and 149.4 mg kg− 1 respectively) and reducible fractions (mean concentrations 0.27 mg kg− 1 and 65.54 mg kg− 1 respectively), while Fe, Cr, Cu, Ni, and Al are associated with the residual fraction. Metals that are associated with the residual fraction are probably related to the mineral assembly of the sediment and should not represent a considerable environmental risk for the biota. The two metals associated with the exchangeable and reducible fraction respond to strongly reducing characteristics on surface sediments, which are affected by reduced hydrodynamics and high organic matter input. However, Cd and Zn could constitute a risk, mainly during resuspension events, when alterations of pH, and Eh, promoted by oxygenation of sediments can release them to the water column and result in increased association to the exchangeable fraction.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

Vicente

Trevisan

Oliveira

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…These methods were integrated into the computer program generating the results of the study. Moreover, the model enables to simulate the scenario of the selection of suitable dredging equipment along with the prediction of dredging time and cost [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

The Model of Support for the Decision-Making Process, While Organizing Dredging Works in the Ports

Kaizer

Neumann

2021

Energies

View full text Add to dashboard Cite

The aim of the research was to create a decision-making model, which would be able to support planning, organizing and conducting the dredging works in the port area. The proposed solution is a multiple element system which enables to verify, in a comprehensive way, the majority of the aspects determining the quality and the time of dredging enterprise realization. The paper presents an original approach to the decision-making process during the organization of dredging works, using the computer program. In order to achieve the main goal of the study, the conditions of dredging works were considered. Furthermore, the factors that have an influence on the schedule of the project were evaluated and algorithms, as well as process organization schemes, were developed. If it is not enough, the decision models corresponding to the discussed issue were analysed and the computer program was created. And last but not the least, the proposed project and equipment were verified using a simulation model. While creating this model, the method of multiple criteria AHP (Analytic Hierarchy Process) decision support was used. Moreover, the mass service model with the priority queue regulations, the expert study, and statistical analysis of the traffic flow, were provided. The model was developed in reliance to multiple criteria studies, based on the opinions of multinational experts. These enabled to adjust each element of the system in accordance with various locations. As a result of the research, the following thesis has been proven, that detailed analysis of the conditions of dredging works and taking into account the received conclusions enables to reduce the costs and shorten the time of dredging projects realizations.

show abstract

“…Nessa perspectiva, uma das alternativas que se destaca nesse setor (Trevisan, Vicente, Rocha & Wasserman, 2020), são os empreendimentos organizados em rota (Gerstenberg, Baumeister, Schraml & Plieninger, 2020), uma vez que são vários atores que trabalham de forma conjunta (Pham, Lee & Kim, 2020) e muitas vezes alcançam objetivos que sozinhos não conseguiriam (Dayoub, Yang, Dayoub, Omran & Li, 2020). As rotas são um percurso continuado, delimitado territorialmente, com identidade reforçada pela exploração de características históricas, ambientais e culturais locais (Brasil, 2010).…”

unclassified

Facilidades E Dificuldades Da Cooperação Para Inovação: Uma Análise Dos Empreendimentos Turísticos Que Integram a Rota Cervejeira Em Santa Catarina

Secchi

Padilha

Souza

2022

DOn

View full text Add to dashboard Cite

O termo inovação tem sido cada vez mais utilizado para descrever o comportamento no setor do turismo, sendo que, a cooperação se apresenta como uma alternativa para as empresas sobreviverem no mercado. O objetivo desse estudo é identificar as facilidades e dificuldades da cooperação para inovação dos empreendimentos turísticos que integram a Rota Vale da Cerveja (RTVC) em Santa Catarina. Como procedimentos metodológicos optou-se por uma abordagem de pesquisa qualitativa e quantitativa, com pesquisas dos tipos descritiva e exploratória. Os dados foram coletados por meio de entrevistas através de um questionário, com os oito responsáveis dos empreendimentos turísticos que integram a rota. Para a análise e interpretação dos dados, utilizou-se a técnica análise de conteúdo proposta por Bardin e os softwares Microsoft® Excel™ e IRAMUTEQ. As informações coletadas foram tabuladas e as respostas apresentadas no formato de quadros e tabelas. Como os principais resultados destacam-se que, os relacionamentos cooperativos possibilitam diversas alternativas para as empresas, que se estivem sozinhas levariam mais tempo para conseguir. Essas relações associadas a uma rota e a inovação, torna-se um indicador importante para a competitividade das empresas no mercado, considerando-se que as interações entre diferentes atores desempenham função-chave no desenvolvimento inovativo.

show abstract

Development of a Dredging Sensitivity Index, applied to an industrialized coastal environment in Brazil

Cited by 18 publications

References 47 publications

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

Geochemical fractionation of trace metals and ecological risk assessment of surface sediments for a simulated dredging area in Sepetiba Bay - Brazil

The Model of Support for the Decision-Making Process, While Organizing Dredging Works in the Ports

Facilidades E Dificuldades Da Cooperação Para Inovação: Uma Análise Dos Empreendimentos Turísticos Que Integram a Rota Cervejeira Em Santa Catarina

Contact Info

Product

Resources

About