Fernando Mainier

Fernando Mainier
Universidade Federal Fluminense | UFF · Escola de Engenharia, Pós Graduação em Engenharia Química, Pós Graduação em Engenharia Civil, Pós Graduação em Gestão

Doctor of Philosophy

About

106
Publications
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374
Citations

Publications

Publications (106)
Article
Sustainability is one of the main challenges of civil construction. Most architectural paints release volatile organic compounds (VOCs) that harm the environment and human health. This paper presents the main discussions and theoretical approaches through bibliometrics on the theme of industrial sustainability in architectural paints. The study pre...
Article
Some natural gas distributors for residential and commercial buildings in Brazil use galvanised steel tubes and fittings manufactured by the hot-dip zinc process that is supported by the specifications contained in the Brazilian Standards. Zinc coating is one of the most widely used methods to provide protection against corrosion. It is therefore e...
Conference Paper
Full-text available
A atividade de armazenagem de petróleo e seus derivados é fundamental na cadeia produtiva da indústria de O&G (Óleo e Gás), na qual utiliza-se tanques atmosféricos, comumente construídos em aço carbono, para este fim. Ao longo da vida útil destes ativos a corrosão é um fator presente que, caso não controlada, gera riscos para os empreendimentos ind...
Chapter
Biodiversity can be a complex subject. However, ignoring the negative impacts that it has been suffering shows that the current mechanisms for identifying environmental aspects and analyses of significance have been flawing and will eventually confront us in the future with situations which, if not irreversible, will be extremely costly to society....
Article
Full-text available
This paper presents an evaluation of specimens prepared by deposition of UNS 625 alloy on carbon steel. The coating was performed using the weld process SMAW (Shielded Metal Arc Welding) to compare with a repair performed on a pressure vessel in a marine facility where severe localized corrosion occurred. The specimens were prepared by qualified we...
Article
Full-text available
The electroless nickel-phosphorus (NiP) coatings have been used with great success in oil production equipment and accessories, such as pipes, valves, pumps, adapters, rings, connectors and various types of special tools. In the acidification or acid stimulation of oil wells, to increase their productivity, a hydrochloric acid (HCl) solution is pre...
Article
Full-text available
This paper presents an evaluation of specimens prepared by deposition of UNS 625 alloy on carbon steel. The coating was performed using the weld process SMAW (Shielded Metal Arc Welding) to compare with a repair performed on a pressure vessel in a marine facility where severe localized corrosion occurred. The specimens were prepared by qualified we...
Article
Full-text available
Obtaining both high gravimetric capacitance (Cs_m) and high volumetric capacitance (Cs_V) in supercapacitors is still a great challenge. We prepared manganese oxide (MO) nanostructures by pulsed laser deposition, using metallic Mn target in O2 atmosphere with pressure from 0.1 Torr to 2.0 Torr at room temperature. The morphology gradually changed f...
Article
Full-text available
Glycerin is a by-product of the transesterification reaction of vegetable oil to produce biodiesel. Glycerin production has increased as the number of biodiesel industries has grown. With features such as water solubility, low cost, and non-toxicity, it is a good substance for water-based drilling fluid formulations with less environmental contamin...
Article
Full-text available
The main objective of this work was to evaluate the presence of lead and cadmium in galvanized steel tubes by hot-dip used exclusively for drinking water supply. In this research, samples of galvanized tubes were removed from walls of residential buildings with 30 years of use. In the process of hot galvanizing, the manufacturing standards allow or...
Article
ASTM A182 F51 duplex stainless steel with a 50:50 ratio of austenite to ferrite microstructure is a material used in mechanical engineering. Its uses include the manufacturing of equipment and components subject to acidification or acid stimulation for oil and gas industries. During acid stimulation or acidification, hydrochloric acid (HCl) solutio...
Article
Full-text available
This work discusses the case of corrosion in a copper-nickel alloy used in seawater, where chlorination is necessary to control micro- and macro-organism growth that can render inoperable the seawater supply system used in an offshore platform. Studies developed in the last 30 years have shown copper-nickel’s adequateness in seawater, with a corros...
Article
Full-text available
Some natural gas distributors for residential and commercial buildings in Brazil use galvanized steel tubes and fittings manufactured by the hot-dip zinc process that are supported by the specifications contained in the Brazilian Standards. Zinc coating is one of the most widely used methods to provide protection against corrosion. It is therefore...
Preprint
This study presents the results of the mechanical characterization of cement composites reinforced with short fibers of jute, sisal and curauá. Tests of direct tension in flexion and traction, after wetting and drying cycle (5 cycles) to determine the first crack were performed to determine the first crack, the tension and post-peak toughness and s...
Article
Full-text available
Hydrostatic tests with water are used to evaluate leaks in welds and possible cracks and failures that may have occurred during construction in petroleum storage tanks and derivatives. Defects and cracks in the concrete foundations that support the tank on the ground are also observed in these tests. The use of seawater as a fluid for hydrostatic t...
Article
Full-text available
AISI 317L stainless steel is a material that is used in many industries, including the manufacturing of equipment and components applied in the oil & gas industry, which are subject to acidification or acid stimulation. Acid stimulation consists, essentially, of hydrochloric acid injection of 5 to 28% (% volume) in oil and gas wells to stimulate or...
Article
Full-text available
This article presents a case of scale on steam generator pipe of high pressure resulting from a failure in the ion exchanger unit of the water system power supply. This generator was injecting steam into oil wells for enhanced oil recovery at a temperature and pressure of about 350°C and 17.0 Mpa, respectively. For safety and operational performanc...
Article
Full-text available
A presente pesquisa analisa a relação das concentrações de metais em sedimentos de ambientes estuarinos com os fatores de degradação de bacias hidrográficas urbanas, tendo como estudo de caso o rio Imboaçu, em São Gonçalo, região metropolitana do Rio de Janeiro. O problema dessa bacia hidrográfica foi estudado considerando duas abordagens fundament...
Article
Full-text available
RESUMO No presente artigo foi aplicada a eletrodeposição para o tratamento de efluentes líquidos contendo íons de cádmio, chumbo e cobre. O cádmio, o chumbo e o cobre são metais amplamente utilizados pelo ser humano. Esses metais são classificados como metais pesados, sendo bioacumuláveis na natureza e podendo causar malefícios ao meio ambiente e à...
Article
Full-text available
The respective compounds of copper, cadmium and lead, owing to their strong toxic potential, as a result of industrial effluent, have left a trail of contamination in humans and the environment. This paper aimed to study the electrode position on the removal of aqueous solutions of cadmium, lead and copper, using an electrolytic cell with a metalli...
Article
Full-text available
Industrial effluents containing cobalt ions have become a serious problem for the environment, unless properly treated, due to their toxic potential. Currently there has been an intensification of the use of cobalt in several industrial sectors as super alloys, catalysts, batteries and pigments in ceramic materials, and a consequent intensification...
Article
Full-text available
Currently, Living Wall Systems (LWSs) are assuming great importance in the built environment, due to environmental and aesthetic advantages, as well as the use of urban residual space and underutilized surfaces of buildings. However, the maintenance and the durability of the materials used have been a challenge for architects and professionals in t...
Article
Full-text available
Globally, the construction industry is one of the leading producers of solid waste. The city of Praia, the capital of the Republic of Cape Verde has been suffering from environmental degradation with the irregular disposal of waste caused by inadequate management of waste from construction and also the demolition. The research was developed based o...
Article
Purpose – The purpose of this paper is to evaluate the corrosion inhibitor performance in acid medium through the determination of Fe2+ ions present based on reaction kinetics of steel with the acid. The use of corrosion inhibitors has been an excellent technique for protecting carbon steel pipes acidizing operations in oil wells. The inhibitor for...
Article
This article proposes the use of texture analysis, an automated optical inspection technique, for non-destructive surface corrosion monitoring. It presents an ASTM A36 steel atmospheric corrosion test conducted over 44 days to obtain a photo sequence of corrosion evolution. These images have been processed for six textural characteristics, and the...
Article
Full-text available
Biofuels are less polluting alternatives because they are not fossil fuels. In Brazil, the biodiesel program aims to incorporate raw vegetable material into conventional diesel oil (2 to 5%) or even replace it entirely as a fuel for adapted diesel engines. As Brazil is one of the largest producers of soybeans in the world, soybeans are the oleagino...
Article
This paper examines the role of gravel in the heating process of substation environments. The choice of the material applied to the electric energy substation surface level can influence temperature changes in equipment. Ambient temperature is an important parameter used to define how many years a transformer will last when subjected to a load curv...
Article
Full-text available
Dos experimentos de Alessandro Volta, William Nicholson, Anthony Carlisle, dentre tantos outros no século XVIII até os dias atuais, a pesquisa em eletroquímica tem mostrado ser fundamental para o desenvolvimento da sociedade, estando presente em nossas vidas de forma mais frequente e intensa do que imaginamos. Basta olhar para o computador pessoal,...
Article
Full-text available
The present study aims to treat some aspects of environmental contamination under the focus of the principle of precaution, which is based on ideas and discussion about the concerns of society regarding ethics, the environment, water resources, the risk of contamination, and the uncertainties of technological applications in all areas of human know...
Article
Full-text available
The burning of fuel oil with high sulfur content in diverse industrial segments results in the generation of oxidized sulfur compounds (SO x). These emissions, directly or indirectly, lead to the deterioration of air quality with consequences including the development of lung diseases in the surrounding population, the generation of acid rain and d...
Article
Full-text available
The media has shown the major problems caused by pipeline leaks; however, the contamination caused by storage tanks of fuel and chemicals is not always shown to the general public, especially when the holes are located on the bottom of the tank. Most of the time the groundwater contamination goes unnoticed and will only be confirmed much later when...
Article
Full-text available
In the cement industry, emissions of sulfur oxides, nitrogen, carbon dioxide and water are inherent in the manufacturing process. However, there are limits to the amount of SO x and NO x emissions; the inhalation of such substances entails risks to human health, and their interaction with the atmosphere results in the formation of sulfuric acid and...
Article
Full-text available
This work uses the methodology of cathodic stripping voltammetry with a mercury drop electrode to separately and simultaneously quantify cyanide (CN-) of other species present in industrial effluents such as toxic metals (Cd 2+ , Zn 2+), sulfides (S 2-) and thiocyanate (SCN-). Voltammetry is a technique for electroanalytical study of the relationsh...
Article
Full-text available
Atualmente, a matriz energética mundial ainda está com o foco voltado aos combustíveis fósseis, cujas emissões de carbono têm agravado os problemas de poluição atmosférica. Uma alternativa menos poluente são os biocombustíveis, que se diferem por sua origem biológica não fossilizada. Como o Brasil é um dos maiores produtores de soja do mundo, é est...
Article
Full-text available
Oil storage tanks and derivatives must be evaluated by hydrostatic testing for leaks in sideways welds, possible cracks and failures that may have occurred during construction. Also in this test are observed defects and cracks in the concrete foundations that support the tank on the ground. The use of seawater as a fluid for hydrostatic testing in...
Article
Full-text available
This paper presents an investigative methodology to evaluate the corrosive process evolution of carbon steel plates as a function of time. It is based on automatic visual inspection, considering digital image texture analysis of carbon steel samples (without any painting) subjected to saline environments. The initial results indicate the possibilit...