Browsing by Issue Date, starting with "2022-02-08"
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- Algae-based bioenergy production aligns with the Paris agreement goals as a carbon mitigation technologyPublication . Branco-Vieira, M.; Lopes, M.P.C.; Caetano, NídiaStrategies to mitigate climate change have been developing and applying in the productive sector. Carbon capture and storage technologies might decrease the impact of CO2 emissions on the environment. Biological technologies are an important tool to mitigate CO2 emissions and microalgae cultivation emerges as a promising alternative, due to the important role of these organisms on the environment, the capacity of growing in different conditions, and the possibility of converting the microalgae biomass into a wide range of value-added products and biofuels. This study evaluated the potential algae-based CO2 mitigation by coupling industrial flue gas of a Brazilian cement plant to a microalgae cultivation system. The biodiesel production from microalgae biomass is also investigated to replace fossil fuels. The microalgae plant facility was projected to occupy a reminiscent area of 3.8 ha in the cement plant boundary. Two different mitigation scenarios were analyzed and the results showed that by using 15% of intermittent CO2 input from the cement industry in the microalgae cultivation system it is possible to mitigate 1268 tCO2 year−1 and to produce 2317 L year−1 of biodiesel. This study provides support information to decision-making to implement carbon capture strategies in the future carbon market to mitigate the environmental impacts of climate change.
- Analyzing the Implementation of Lean Methodologies and Practices in the Portuguese Industry: A SurveyPublication . Pinto, Carla; Mendonça, Jorge; Babo, Lurdes; Silva, Francisco J. G.; Fernandes, José L. R.The mass production paradigm on which much of the industry was based has changed. The market is increasingly demanding, requesting diversity and products that are more and more adapted to personal wishes and requirements. This implies producing a greater diversity of products in smaller quantities. Competitiveness is enormous, which forces most companies to be truly effective and efficient, taking care of product quality, delivery time, and final cost. Lean methodologies have been a valuable aid in this field. The diversity of Lean tools has been shown to have answers to the most diverse challenges, and companies are aware of this, increasingly adopting methodologies and processes that aim to progressively reduce waste and adapting their production paradigm to what the market requires. This work intends to provide a vision, as global as possible, of the pathway of Lean implementation in the Portuguese industry. For this purpose, a survey was carried out with a significant sample of Portuguese industrial companies from a wide range of activity sectors. The data collected through the survey were treated statistically, and then a SWOT analysis of the results was performed, which provided a collection of precious information on the evolution of industrial companies in Portugal