Mestrado em Engenharia Ambiental

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http://repositorio.ufes.br/handle/10/17612

Nível: Mestrado Acadêmico
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Navegando Mestrado em Engenharia Ambiental por Autor "7º membro da banca"

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    Avaliação da disposição a pagar pelo manejo de resíduos gerados em condomínios residenciais e efeito na sustentabilidade financeira da gestão integrada de resíduos sólidos urbanos
    (Universidade Federal do Espírito Santo, 2024-08-12) Mascarenhas, Vitor Souza Pinto; Yamane, Luciana Harue ; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador2; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador4; ID do co-orientador4; Lattes do co-orientador4; Siman, Renato Ribeiro ; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; Chaves, Gisele de Lorena Diniz; https://orcid.org/; http://lattes.cnpq.br/; Günther, Wanda Maria Risso; https://orcid.org/; http://lattes.cnpq.br/; 3º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 4º membro da banca; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/
    This study evaluated Brazilian residential condominiums in the Solid Waste Management (SWM), focusing on the economic-financial sustainability in the provision of management services. For this purpose, a systematic review was carried out identifying the normative acts that deal with residential condominiums and charging for management services, and the aspects that influence the Willingness To Pay (WTP) for these services. In addition, a case study was conducted in the municipality of Vitória/ES, identifying through a questionnaire and the Contingent Valuation Method, the WTP for Waste Management in condominiums, and estimating the financial impact with the application of a transfer policy of responsibility. From the systematic review it was identified that there is no specific Brazilian legislation for charging for management services in residential condominiums. It was also identified that the influential variables in WTP are divided into four groups: (1) socioeconomic aspects, (2) informational level, (3) situation of management services, and (4) political and regulatory aspects, being the last still little studied despite representing a strong influence on WTP. The case study revealed that 58% of the interviewees living in condominiums are willing to pay an average of R$ 29.41 per month per household for management services, and this amount could be increased by 15% by disclosing information about the WTP. Finally, it was identified that the costs of waste management in residential condominiums correspond to around 23% of the entire SWM cost in Vitória/ES, and that the application of a responsibility transfer policy can relieve 19% of the costs. This work contributes to the development of policies for charging for waste management services in residential condominiums, describing the WTP, and the importance of disclosing information for greater acceptance of the policy. Due to the low adherence of interviewees, future studies are recommended to construct statistically representative scenarios and econometric models, which allow the calculation of the WTP and the assessment of the financial impact
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    Avaliação da remoção de 2,4-d e atrazina por carvão ativado : um estudo da competição em adsorção
    (Universidade Federal do Espírito Santo, 2024-09-24) Rafalscky, Lays; Britto, Gilberto Maia; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador2; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador4; ID do co-orientador4; Lattes do co-orientador4; Coelho, Edumar Ramos Cabral; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; Gonçalves, Ricardo Franci; https://orcid.org/; http://lattes.cnpq.br/; Capelo Neto, José; https://orcid.org/; http://lattes.cnpq.br/; 3º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 4º membro da banca; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/
    The presence of pesticides in drinking water is concerning due to the toxicity and bioaccumulation potential of these compounds. In this context, adsorption by activated carbon has gained attention as an alternative for removing microcontaminants in water treatment. Several variables can influence adsorption, one of the most notable being the competition among multiple contaminants for the adsorption sites on the activated carbon. This work conducted a systematic review guided by the PRISMA guideline to establish the state of the art on competitive adsorption. The review data were obtained using the keywords “Competitive adsorption,” “Powder Carbon” “Activated Carbon,” and “Water Treatment,” covering the years 2000 to 2023. The selected articles were categorized into: competition between metals, competition between metals and organic compounds, and competition between organic compounds. The review results contributed to understanding the existing research gaps in the field. In the laboratory tests, the activated carbon was characterized by several techniques to identify functional groups, porosity, moisture content, and ash content, among other parameters. Then, the isolated and competitive removal of two highly commercialized herbicides in Brazil, atrazine and 2,4-D, was tested in the state of Espírito Santo, with adsorption evaluated in terms of kinetics and isotherms. The Freundlich model showed the best fit for both pesticides in isolated systems. The adsorption of 2,4-D was significantly affected by the presence of atrazine due to its hydrophilic nature in the study's pH range (6-7). A computational study was conducted to suggest potential mechanisms, and the results indicated a predominance of π-π interactions, which is consistent with findings in the literature. The results suggest that the commercial carbon from Bahia Carbon is a strong candidate for removing 2,4-D and atrazine in isolated systems, but the presence of atrazine may significantly affect the removal of 2,4-D
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    Influência do módulo de compressibilidade na propagação da onda acústica em meios estratificados
    (Universidade Federal do Espírito Santo, 2023-09-29) Araujo, Luana Maria Kiefer de; Co-orientador1; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador2; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador3; https://orcid.org/; http://lattes.cnpq.br/; Co-orientador4; ID do co-orientador4; Lattes do co-orientador4; Orientador1; https://orcid.org/; http://lattes.cnpq.br/; Orientador2; https://orcid.org/; http://lattes.cnpq.br/; https://orcid.org/; http://lattes.cnpq.br/; 1º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 2º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 3º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 4º membro da banca; http://lattes.cnpq.br/; 5º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 6º membro da banca; https://orcid.org/; http://lattes.cnpq.br/; 7º membro da banca; https://orcid.org/; http://lattes.cnpq.br/
    This dissertation focuses on investigating the influence of compressibility modulus on acoustic propagation in stratified media. Fluid mechanics approaches are employed to derive the equation governing the propagation of acoustic waves in a non-homogeneous medium. A second-order partial differential equation (PDE), considering both space and time, is formulated to describe the propagation of the pressure wave, also known as the P-wave, and incorporates a Mexican hat-shaped source term that models the disturbance generated in the medium. To numerically solve the P-wave PDE, the finite difference method in the time domain is implemented, using a second-order explicit scheme in both time and space. To ensure numerical stability, a stability condition is developed that adjusts the time step according to the spatial discretization of the numerical mesh. Within the numerical solution context, a second-order Absorbing Boundary Condition (ABC) is applied. The numerical model is implemented in FORTRAN and integrated with the OCTAVE and PYTHON environments to facilitate result visualization. Densities and wave velocities for a section along the coast of Espírito Santo are calculated based on temperature and salinity data obtained from the Hybrid Coordinate Ocean Model (HYCOM). Subsequently, the compressibility modulus is computed, and simulations of P-wave propagation in real oceanic scenarios are conducted to gain a deeper understanding of its role in the propagation of acoustic waves in non-homogeneous media. The simulations underscore the critical importance of wave velocity due to its direct influence on wave travel times, especially relevant in applications such as underwater seismology, where the precise location of seismic sources depends on these times. In the research context, the compressibility modulus is acknowledged as significant, though its fluctuation in seawater is considerably smaller compared to variations in sound velocity. This discrepancy assigns a prominent role to sound velocity in the analysis and interpretation of seismic and acoustic data