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Use of corncob and pineapple peel as associated substrates for biosurfactant production

Environmental Science and Pollution Research 2024年第47期31卷 57973-57988页

作者： Santos, Brenda Lohanny Passos Vieira, Isabela Maria Monteiro Santos, Pablo Omar Lubarino Menezes, Millena Souza de Souza, Roberto Rodrigues Ruzene, Denise Santos Silva, Daniel Pereira Northeastern Biotechnology Network Federal University of Sergipe SE São Cristóvão49100-000 Brazil Center for Exact Sciences and Technology Federal University of Sergipe SE São Cristóvão49100-000 Brazil Graduate Program in Biotechnology Federal University of Sergipe SE São Cristóvão49100-000 Brazil Graduate Program in Intellectual Property Science Federal University of Sergipe SE São Cristóvão49100-000 Brazil CISAS – Center for Research and Development in Agrifood Systems and Sustainability Instituto Politécnico de Viana Do Castelo Viana Do Castelo4900-347 Portugal Department of Production Engineering Federal University of Sergipe Rodovia Marechal Rondon S/N Jardim Rosa Elze Sergipe São Cristóvão49100-000 Brazil

Biosurfactants are amphiphilic biomolecules with promising tensoative and emulsifying properties that find application in the most varied industrial sectors: environment, food, agriculture, petroleum, cosmetics, and hygiene. In the current work, a 23 full-factorial design was performed to evaluate the effect and interactions of pineapple peel and corncob as substrates for biosurfactant production by Bacillus subtilis LMA-ICF-PC 001. In a previous stage, an alkaline pretreatment was applied to corncob samples to extract the xylose-rich hydrolysate. The results indicated that pineapple peel extract and xylose-rich hydrolysate acted as partial glucose substitutes, minimizing production costs with exogenous substrates. Biosurfactant I (obtained at 8.11% pineapple peel extract, 8.11% xylose-rich hydrolysate from corncob, and 2.8109 g/L glucose) exhibited a significant surface tension reduction (52.37%) and a promising bioremediation potential (87.36%). On the other hand, biosurfactant III (obtained at 8.11% pineapple peel extract, 31.89% xylose-rich hydrolysate from corncob, and 2.8109 g/L glucose) exhibited the maximum emulsification index in engine oil (69.60%), the lowest critical micellar concentration (68 mg/L), and the highest biosurfactant production (5.59 g/L). These findings demonstrated that using pineapple peel extract and xylose-rich hydrolysate from corncob effectively supports biosurfactant synthesis by B. subtilis, reinforcing how agro-industrial wastes can substitute traditional carbon sources, contributing to cost reduction and environmental sustainability. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Ananas comosus Bacillus subtilis Zea mays Agro-industrial waste Bioremediation potential Emulsification index Surface tension

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Case Study: Gain Scheduling Adaptive Control Applied on a Didactic Level System

Case Study: Gain Scheduling Adaptive Control Applied on a Di...

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International Carpathian Control Conference (ICCC)

作者： Vinícius Berno Da Silva Paulo César Barros Rodrigues Murillo Ferreira Dos Santos Paolo Mercorelli Milena Faria Pinto Wolmar Araújo Neto Department of Electroelectronics CEFET-MG Leopoldina Brasil Institute for Production Technology and Systems (IPTS) Leuphana University of Lüneburg Germany Graduate Program in Electrical Engineering CEFET-RJ Rio de Janeiro Brasil Federal University of Espírito Santo UFES Vitória Brazil

ISBN: (数字)9798350350708

ISBN: (纸本)9798350350715

Gain scheduling has been successfully applied in many different areas due to the positive results achieved when applied to nonlinear control. Its utilization enables the controller to respond rapidly to changes in operating conditions. This study demonstrates the application of gain scheduling to a SMAR didactic level system to implement adaptive control. The results exhibited a strong response with minor errors using a Proportional and Integral (PI) controller, which facilitated the development of two generic equations for determining the values of K p (proportional gain) and K i (integral gain) based on the desired set point.

关键词： Adaptive scheduling PI control Liquids System dynamics Integral equations Noise Gain measurement

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Methodology for optimizing electrical grounding grids in stratified soils using advanced calculation techniques and evolutionary algorithms

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Swarm and Evolutionary Computation 2025年 95卷

作者： Silva, Carlos Leandro Borges da Pires, Thyago Gumeratto Silva Filho, Antonio Marcelino Bulhões, Junio Santos Belo, Orlando M. Oliveira Rodrigues, Clóves Gonçalves Coimbra, Antonio Paulo Calixto, Wesley Pacheco Electrical Mechanical & Computer Engineering School Federal University of Goias Goiania Goias PC 74.605-220 Brazil Institute of Systems and Robotics Coimbra University CoimbraPC 3030-290 Portugal Department of Informatics School of Engineering University of Minho BragaPC 4710-057 Portugal Electrical Power Systems Study Group Federal Institute of Tocantins Palmas TocantinsPC 77.021-090 Brazil Graduate Program in Production and Systems Engineering Pontifical Catholic University of Goias Goiania Goias PC 74605-010 Brazil Mato Grosso Brazil Technology Research and Development Center Federal Institute of Goias Goiania Goias PC 74.055-110 Brazil

This paper presents a practical methodology for optimizing the geometry of electrical grounding grids at industrial frequencies of 50Hz and 60Hz, integrating advanced calculation techniques and evolutionary algorithms to improve the safety and operational performance of electrical grounding systems. The proposed approach is particularly beneficial for industrial automation and control systems, where effective grounding is necessary to maintain system reliability and prevent downtime. This methodology employs mathematical modeling and computational tools to optimize grid parameters, ensuring compliance with safety standards while reducing operational costs, thus contributing to the overall efficiency of automated systems in industrial environments. The study reports a reduction of up to 66% in the number of vertical rods and 40% in horizontal conductors compared to traditional methods. These results indicate that the proposed methodology can significantly reduce material usage and costs while maintaining electrical safety in accordance with regulatory standards, making it applicable to a wide range of industrial settings, including substations and automated facilities. © 2025 The Authors

关键词： Electric grounding

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Socio-biodiversity supply chain: Sustainable practices of a Brazilian cosmetic company

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Environmental Quality Management 2020年第1期30卷 25-31页

作者： Cassol, Maurício Sellitto, Miguel Afonso Production and Systems Engineering Graduate Program (PPGEPS) Universidade do Vale do Rio dos Sinos (UNISINOS) Avenida Unisinos 950 São Leopoldo 93022-750 RS Brazil

The purpose of this article is to analyze and describe sustainable practices based on biodiversity assets adopted by one of the largest global cosmetics company, located in Brazil. The company occupies the 19th position of the Global Ranking 100 Sustainability. The research method is bibliographic research that employed open, non-classified documents publicized by the company. The main findings of the study underscore the relevance of the rural communities in developing a supply chain based on biodiversity as well as the importance of the relationships among the tiers to implement a sustainable business model. The company relies on high-quality products associated with environmental development. Currently, biodiversity suppliers account for 80% circa of natural raw materials, the so-called biodiversity asset, which represents the core of the sustainable business model of the company. The findings can be generalized by helping other supply chains to develop and implement sustainable business models supported by biodiversity. Such type of a model can help companies achieve expressive business performance and, at the same time, social relevance to peripheral or vulnerable rural communities. © 2020 Wiley Periodicals LLC

关键词： biodiversity circular economy reverse logistics social responsibility supply chains

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Towards a Predictive Approach for Omni-channel Retailing Supply Chains

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IFAC-PapersOnLine 2019年第13期52卷 844-850页

作者： Pereira, Marina Meireles Frazzon, Enzo Morosini Graduate Program in Production Engineering Industrial and Systems Engineering Department Technology Center Federal University of Santa Catarina Florianópolis Santa Catarina Brazil

The adoption of omni-channel strategy has changed the relation between retailers and customers and brought more complexity to the retailing supply chains. To address the increasing complexity, it is necessary to adopt innovative approaches based on information technologies and intelligent decision methods. The challenges to retailers are improving the accuracy of offline and online channels demand forecasting, better managing offline and online customer's needs, thus reducing the uncertainties of the omni-channel retailing supply chain. In this context, this research paper aims to propose a predictive approach for omni-channel retailing supply chain combining clustering with artificial neural network to handle demand uncertainty. © 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Neural networks Complex networks Learning systems Sales Supply chain management Channel strategies Clustering Demand forecasting Demand uncertainty Innovative approaches Intelligent decisions Omni channel Retail supply chain

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Electromobility strategy on emerging economies: Beyond selling electric vehicles

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Cleaner Energy systems 2024年 9卷

作者： Velho, Sérgio Roberto Knorr Vanderlinde, Artur Santana Guedes Almeida, Antônio Henrique Aguiar Barbalho, Sanderson César Macêdo Ministry of Development Industry Commerce and Services University of Brasília Esplanada dos Ministérios Block J – 5th-floor/DF Brasília 70053-900 Brazil Production Engineering Department Faculty of Technology University of Brasília Darcy Ribeiro University Campus Federal District Brasília 70910-900 Brazil Production Engineering Department Graduate Program in Mechatronic Systems (PPMEC) Faculty of Technology University of Brasília Darcy Ribeiro University Campus Federal District Brasília 70910-900 Brazil

Electromobility (EM) has emerged as a promising solution to achieve carbon neutrality goals by replacing traditional fossil fuel-powered transportation with electric vehicles (EVs). This sustainable transportation option significantly reduces energy consumption and eliminates greenhouse gas emissions, contributing to mitigating climate change and improving air quality. While some countries have implemented strategies to promote EM adoption, emerging economies like Brazil face complex challenges. This research employs Q-methodology to explore the viewpoints and opinions of Brazilian specialists in the field of EM, identifying challenges and opportunities for successful adoption. The study also examines the broader implications for emerging countries and their automotive industries. The findings emphasize the importance of addressing EV costs, propulsion technologies, and the need for government incentives and policies. Additionally, the research highlights the role of education and urban mobility in promoting EM. While the study offers valuable insights, it acknowledges limitations in the sample and suggests future research directions. © 2024 The Authors

关键词： Automotive value chain Electric vehicles Electromobility Q-methodology Urban mobility

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Ensiling treatment of rice straw with cow paunch content to enhance bioethanol production

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Case Studies in Chemical and Environmental engineering 2024年 10卷

作者： Ludfiani, Dini Dwi Arianti, Forita Dyah Pertiwi, Miranti Dian Prasetyo, Teguh Djarot, Ira Nurhayati Santoso, Arif Dwi Sasongko, Nugroho Adi Astuti, Widi Research Center for Sustainable Production Systems and Life Cycle Assessment National Research and Innovation Agency (BRIN) Prof. BJ. Habibie Complex Area Tangerang Selatan Banten 15314 Indonesia Energy Security Graduate Program Republic of Indonesia Defense University (UNHAN RI) IPSC Sentul Area West Java Bogor 16810 Indonesia Chemical Engineering Department Universitas Negeri Semarang Central Java Semarang 50229 Indonesia

Every year, the production of rice straw and cow paunch content is abundant and 80 % of them has not been utilized. This study aimed to determine the potency of ensiling treatment on them in producing bioethanol. The novelty of this study is the utilization of cow paunch content as biomass and source of microbial fiber degradation. In this study, there were six groups of treatments. Bioethanol fermentation used Saccharomyces cerevisiae. Results, ensiling treatment significantly affected (p < 0.001) the changed chemical composition of them and produce ethanol of 40.13–102.84 mg/L. Conclude, ensiling treatment was considered effective ratio for bioethanol production. © 2024

关键词： Bioethanol Paunch content Rice straw

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Hoshin Kanri and A3: a proposal for integrating variability into the policy deployment process

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TQM Journal 2019年第2期31卷 118-135页

作者： Tortorella, Guilherme Cauchick-Miguel, Paulo A. Gaiardelli, Paolo Federal University of Santa Catarina Florianopolis Brazil Department of Production and Systems Engineering Federal University of Santa Catarina Florianopolis Brazil Post-Graduate Program of Production Engineering Universidade de Sao Paulo Sao Paulo Brazil Universita degli Studi di Bergamo Bergamo Italy

Purpose: The purpose of this paper is to propose a methodology to support the Hoshin Kanri (HK) process taking into account the variance of senior managers’ perspective regarding the relationships among objectives, key performance indicators and continuous improvement (CI) projects. Design/methodology/approach: A four-step methodology incorporates the A3 report into the HK, whose deployment was weighted by the variability among managers’ perception about the importance of each decision. This methodology was applied in a market-leader Mexican auto parts manufacturing company that is undergoing a Lean Manufacturing (LM) implementation. Findings: The results indicate that the proposed methodology provides an easier approach to consolidate different perspectives and weight the importance of CI projects. Moreover, it minimizes the possibility of managerial conflicts or the influence of a determined senior manager on others’ opinions during the deployment and prioritization. Practical implications: This work may be of great interest to managers, consultants and professionals who deal with the implementation of LM and wish to prioritize the importance of CI projects within the perspective of HK. Originality/value: HK provides a systematic approach to integrate strategic management with daily routine management through an adequate deployment of organizational policies to all levels. However, companies usually struggle with several issues such as the style of senior managers and consensus establishment among different opinions, which emphasizes the relevance of the proposed methodology in this study. © 2018, Emerald Publishing Limited.

关键词： Managers

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Simulation-Based Optimization for the Integrated Control of production and Logistics: A Performance Comparison

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IFAC-PapersOnLine 2020年第2期53卷 10639-10644页

作者： Matheus C. Pires Enzo M. Frazzon Djonathan Quadras Eike Broda Michael Freitag Department of Production Engineering and Systems (EPS) Federal University of Santa Catarina Florianópolis Brazil Graduate Program in Production Engineering Federal University of Santa Catarina Florianópolis Brazil Faculty of Production Engineering University of Bremen Bremen Germany BIBA - Bremer Institut für Produktion und Logistik GmbH at the University of Bremen Bremen Germany

Manufacturing systems’ efficiency depends on the proper assignment of orders to resources. Due to existing interdependencies, the integrated consideration of production, inventory and delivery processes can improve the overall manufacturing performance. However, the integration can result in high complexity and stochasticity. Thus, the three areas are rarely addressed together. Thereof, this paper proposes an integrated simulation-based optimization method to cope with uncertainty and complexity. The proposed approach was compared to a benchmark approach and the obtained results show that the first is able to handle the complexity and stochasticity of real-world manufacturing systems, surpassing the performance of the latter.

关键词： Supply Chain Planning Control Simulation-based Optimization Integrated Planning Simulation Optimization Simulated Annealing

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A model for renewable energy symbiosis networks in eco-industrial parks

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IFAC-PapersOnLine 2020年第2期53卷 13137-13142页

作者： Maria Angela Butturi Miguel A. Sellitto Francesco Lolli Elia Balugani Alessandro Neri Department of Sciences and Methods for Engineering University of Modena and Reggio Emilia 42100 Reggio Emilia Italy Production and Systems Engineering Graduate Program Universidade do Vale do Rio dos Sinos 93.022-000 Brazil

Renewable energy technologies integration within industrial districts can boost carbon emissions reduction in the industry sector. The eco-industrial parks model promotes the sustainable use of energy and the application of energy synergies and energy exchanges that can include renewable sources of energy. This paper presents an optimization methodology based on a multi-stakeholder perspective to evaluate energy symbiosis including the integration of renewable energy sources within the parks. The study results in three scenarios providing to managers of single firms and parks relevant information for supporting decision making regarding the economic sustainability and the environmental impacts of the energy synergies. The results show that the optimization of the collective point of view ensures more efficient management of the energy supplied by renewables as well as by firms that can provide an energy surplus.

关键词： Renewable energy systems Decision making Models Environment Energy dependence Energy management system Industrial production systems

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