ORALS

SESSION: IronSatAM-R8	Usui International Symposium on Advanced Sustainable Iron and Steel Making (7th Intl. Symp. on Advanced Sustainable Iron and Steel Making)
Sat Oct, 26 2019 / Room: Ambrosia B (77/RF)
Session Chairs: Tateo Usui; Masashi Nakamoto; Session Monitor: TBA

12:35: [IronSatAM04] Invited
Antifouling activity of natural products of marine macroalgae against the Limnoperna fortunei - Golden Mussel. A review.
Camila Freitas De Araújo¹ ; Alex Campos² ; Adriano Batista³ ; Bernardo Da Gama⁴ ; Renato Crespo Pereira⁵ ; Rodrigo Pinheiro De Almeida Santos⁶ ; Bruna Helena Malovini Loiola⁷ ; Paulo Assis⁸ ; Tateo Usui⁹ ; ¹Federal University of Ouro Preto - UFOP/REDEMAT, Ouro Preto, Brazil; ²Federal University of Ouro Preto, Ouro Branco, Brazil; ³IFMG, Ouro Preto, Brazil; ⁴UFF, Niterói, Brazil; ⁵Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rio de Janeiro, Brazil; ⁶Departamento de Biologia Marinha - Fluminense Federal University, Niterói, Brazil; ⁷Federal University of Ouro Preto - REDEMAT, Ouro Preto, Brazil; ⁸University of Ouro Preto / REDEMAT, Ouro Preto, Brazil; ⁹Osaka University, Ibaraki, Japan;
Paper Id: 365 [Abstract]

AUTHORS and AFFILIATION:
Camila Freitas de Araújo – Civil Engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (camilafr.eng@gmail.com).
Alex Milton Albergaria Campos – MSc Metallurgical Engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (alexcampos88@yahoo.com.br).
Adriano Corrêa Batista – Professor, DSc Instituto Federal de Minas Gerais, Ouro Preto, Brazil (adrianocorrea77@gmail.com).
Bernardo Antônio Perez da Gama – Professor, PhD UFF, Niterói, Brazil (bapgama@gmail.com).
Renato Crespo Pereira – Professor, DSc UFF, Niterói, Brazil (rcrespo@id.uff.br).
Rodrigo Pinheiro de Almeida Santos – Doctoral Student at UFF, Niterói, Brazil (pinheiro153@gmail.com).
Bruna Helena Malovini Loiola – Metallurgical Engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (malovinibruna@gmail.com).
Paulo Santos Assis –Professor, PhD REDEMAT/UFOP, Ouro Preto, Brazil (assis@ufop.edu.br).
Tateo Usui – Professor emeritus, DSc Osaka University, Suita, Japan (usui@mat.eng.osaka-u.ac.jp).

Abstract
The golden mussel (Limnoperna fortunei) is a species of bivalve mollusc introduced in Brazil via ballast water in the 1990s. Given the biological and ecological characteristics of the species, as well as the favorable environment in the country for its proliferation, the golden mussel has become an exotic invasive species that has caused several problems in the aquatic environment because of its ability to form colonies in structures. The species adheres on the surfaces by protein filaments, causing serious environmental, social and economic damages, provoking structural and functional alterations in the ecosystems and damages to the human activities.
The challenge presented consists of biological fouling combat through treating underwater surfaces with freshwater natural products, in particular those from red algae. Fouling control tends to arouse the interest of shipbuilders, marine vessel operators, fish farming in tanks and hydroelectric power plants. In Brazil, the chemical treatment against the incrustation of the golden mussel, for example, made only in three hydroelectric power plants in Minas Gerais, has annual cost of R$ 1,494,000.00 [1].
With the worldwide ban of TBT-based antifouling paints since 2008, alternative, environmentally safe treatments gain more appeal, considering the risk associated with the alternative products currently in use. Natural marine products have since been recognized as a promising alternative for the replacement of commercially used antifouling until the moment [2].
A selection of natural seaweed products with antifouling activity may provide effective results with little or no environmental impact compared to currently used products [3], while contributing to the understanding of ecological functions and mechanisms of metabolic production secondary. At least 18 different regulatory biocides are currently being used as an alternative to tributyltin free antifouling paints, but these also pose some threat to the aquatic environment. In fact, even biocide-free antifouling paints are toxic to marine organisms over a broad spectrum [4]. For this reason there is still an urgent demand for new low-impact anti-fouling products.
This article aims to disseminate this broad line of research and consolidate information about the potential of marine organisms as producers of secondary metabolites (natural products) with antifouling activity, in the light of scientific production.

Key words: Golden Mussel; red algae; anti-fouling products; secondary metabolites; tributyltin.

References:
REFERENCES:\n[1] CEMIG. Companhia Energética de Minas Gerais. O mexilhão Dourado, uma ameaça às águas e hidrelétricas brasileiras. Ed. CEMIG, Belo Horizonte, p. 24, 2014.\n\n[2] Bhadury, P.& Wright, P.C. (2004). Exploitation of marine algae: biogenic compounds for potential antifouling applications. Planta, v. 219, p. 561–578.\n\n[3] DA GAMA, B. A. P. et al. The Effects of Seaweed Secondary Metabolites on Biofouling. Biofouling, v. 18, n. 1, p. 13-20, 2002.\n\n[4] Löschau, M.&Krätke, R. (2005). Efficacy and toxicity of self-polishing biocide-free antifouling paints. Environmental Pollution, v. 138, p. 260–267.

SESSION: IronSatPM1-R8	Usui International Symposium on Advanced Sustainable Iron and Steel Making (7th Intl. Symp. on Advanced Sustainable Iron and Steel Making)
Sat Oct, 26 2019 / Room: Ambrosia B (77/RF)
Session Chairs: Cyro Takano; Mery-Cecilia Gomez-Marroquin; Session Monitor: TBA

14:50: [IronSatPM107] Invited
Hierarchizing BOF Slopping Variables from Big Data Analysis
Bruna Helena Malovini Loiola¹ ; Carlos Antônio Silva¹ ; Henrique Silva Furtado² ; Camila Freitas De Araújo³ ; Paulo Assis⁴ ; Tateo Usui⁵ ; Alex Campos⁶ ; ¹Federal University of Ouro Preto - REDEMAT, Ouro Preto, Brazil; ²+55 27 33483601, Vitoria, Brazil; ³Federal University of Ouro Preto - UFOP/REDEMAT, Ouro Preto, Brazil; ⁴University of Ouro Preto / REDEMAT, Ouro Preto, Brazil; ⁵Osaka University, Ibaraki, Japan; ⁶Federal University of Ouro Preto, Ouro Branco, Brazil;
Paper Id: 371 [Abstract]

AUTHORS and AFFILIATION:
Bruna Helena Malovini Loiola – Metallurgical Engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (malovinibruna@gmail.com);
Carlos Antônio da Silva – Professor, PhD REDEMAT/UFOP, Ouro Preto, Brazil (casilva@ufop.edu.br);
Henrique Silva Furtado – DSc. Eng. ArcelorMittal Global R&D South America, Vitória, Brazil (henrique.furtado@arcelormittal.com.br);
Camila Freitas de Araújo – Civil engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (camilafr.eng@gmail.com). Alex Milton Albergaria Campos – MSc. Metallurgical Engineer, Graduate Student at REDEMAT/UFOP, Ouro Preto, Brazil (alexcampos88@yahoo.com.br)

Paulo Santos Assis – Professor, PhD REDEMAT/UFOP, Ouro Preto, Brazil (assis@ufop.edu.br);
Tateo Usui – Professor emeritus, DSc Osaka University, Suita, Japan (usui@mat.eng.osaka-u.ac.jp).
ABSTRACT

Slopping is a phenomenon which is observed when the volume the emulsion inside of BOF (Basic Oxygen Furnace) is excessive and a fraction of slag and metal is then expelled. This phenomenon concerns steelmakers since it leads to material losses, health hazards, reduction of refining efficiency and, mainly, environmental issues. Big Data files from a steelmaking shop in Brazil have been analysed in order to identify the central causes of the slopping. Statistical techniques including Multivariate Analyzes have been employed in order to identify the main variables that affect slopping. Statistica, Genes and Rbio software were used to do so; also principal components, path analysis, and correlation network were chosen as tools. It was possible to identify and hierarchize the variables most affecting slopping in good agreement with literature. The resulting variables can be used to a model to generate anticipate slopping..


Key-words: Slopping; Emulsion; BOF; Multivariate Analyzes.

References:
[1] Rizzo, E. M. D. S. Processos de refino primário dos aços nos convertedores a oxigênio. São Paulo: ABM, 2006.
[2] Fruehan, R. et al. The Making, Shaping and Treating of Steel. 10. ed. Pittsburgh: AISE Steel Foundation, 1998.
[3] Bramming M. 2010. Avoiding Slopping in Top-Blown BOS Vessels [thesis]. Lulea: Lulea.
University of Technology.
[4] Walker, D. I.; Kemeny, F. L.; Jones, J. A. T. Vessel Slopping Detection. AISTech 2005 Proceedings - Volume I. Pittisburgo: AIST. 2005. p. 711-720.
[5] Evestedt, M. et al. Slopping Warning System for the LD Converter Processe - An Extended Evaluation Study. Lulea University of Technology, Lulea, 2007.