Given the significant increase in electricity consumption, especially in the industrial and commercial categories, exploring new energy sources and developing innovative technologies are essential. The fourth industrial revolution (Industry 4.0) and digital transformation are not just buzzwords; they offer real opportunities for energy sustainability, using technologies such as cloud computing, artificial intelligence, and the Internet of Things (IoT). In this context, this study focuses on improving energy efficiency in smart spaces within the context of Industry 4.0 by utilizing the SmartParcels framework. This framework creates a detailed and cost-effective plan for equipping specific areas of smart communities, commonly referred to as parcels. By adapting this framework, we propose an integrated model for planning and implementing IoT applications that optimizes service utilization while adhering to operational and deployment cost constraints. The model considers multiple layers, including sensing, communication, computation, and application, and adopts an optimization approach to meet the needs related to IoT deployment. In simulated industrial environments, it demonstrated scalability and economic viability, achieving high service utility and ensuring broad geographic coverage with minimal redundancy. Furthermore, the use of heuristics for device reuse and geophysical mapping selection promotes cost-effectiveness and energy sustainability, highlighting the framework’s potential for large-scale applications in diverse industrial contexts.

Este trabalho apresenta um estudo de caso do restaurante Cidadão, localizado na Avenida Anhanguera, n. 8.473, Quadra 97, Setor Campinas – Goiânia/GO. Pretende-se analisar, caracterizar e quantificar os resíduos através de dois métodos e, a partir dos resultados de composição obtidos, avaliar se a compostagem é viável ou não. São servidas diariamente cerca de 2.400 refeições, e os locais de geração levantados foram a cozinha e o salão de alimentação. A partir dos resultados e da literatura estudada, entende-se que a compostagem é viável no local, e o melhor método a ser aplicado é o de leiras estáticas com aeração natural. O emprego da compostagem em resíduos sólidos urbanos (RSU) aumenta consideravelmente a vida útil dos aterros sanitários, correspondendo a um acréscimo de aproximadamente 0,342 anos aos locais de disposição final relativos apenas aos grandes geradores.

Given the significant increase in electricity consumption, especially in the industrial and commercial categories, exploring new energy sources and developing innovative technologies are essential. The fourth industrial revolution (Industry 4.0) and digital transformation are not just buzzwords, but they offer real opportunities for energy sustainability, using technologies such as artificial intelligence, the Internet of Things (IoT), and cloud computing. In this context, the paper presents an integrated approach that uses heterogeneous devices to cover the detection, communication, computation, and application layers, targeting application deployment efficiency. The implementation of this solution aims to reduce energy consumption by controlling connectivity and resource constraints. Preliminary results indicate its potential to assist in strategic planning and decision-making, promoting sustainability.

Este trabalho apresenta um estudo de caso no restaurante Cidadão, localizado na Avenida Anhanguera, n° 8.473, Quadra 97, Setor Campinas - Goiânia/GO. Pretende-se analisar, caracterizar e quantificar os resíduos por meio de dois métodos e, a partir dos resultados obtidos de composição, avaliar se a compostagem é viável ou não. São servidas diariamente cerca de 2.400 refeições, e os locais de geração levantados são a cozinha e o salão de alimentação. Entende-se a partir dos resultados e da literatura estudada que a compostagem é viável no local, e que o melhor método a ser aplicado é o de leiras estáticas com aeração natural. O emprego da compostagem em RSU aumenta consideravelmente a vida de aterros sanitários, sendo a parcela correspondente ao aumento do horizonte de vida dos locais de disposição final relativos apenas aos grandes geradores, cerca de 0,342 ano. Palavras-chave: Resíduos Sólidos Urbanos. Compostagem. Grande Gerador de Resíduos.

This research investigated the production of carboxylic acids (CA) by anaerobic digestion (AD) using organic agro-industrial waste from Brazil. Two experimental routes were tested: Route A for biogas production with active archaea and Route B for CA production with inhibited archaea, using different pH conditions to suppress methanogenesis. The residues analyzed were sugarcane filter cake and cassava peel processing residues, with bovine manure as inoculum. The concentration of short-chain carboxylic acids (SCCA) was evaluated over 21 days using gas chromatography with flame ionization detection (FID). The most significant values were observed for acetic acid (43%) and butyric acid (40%) contents, increasing on day 4 of the experiment from route A to route B in the case of acetic acid from 51 mg/gMSO to 294 mg/gMSO, and in the case of butyric acid from 15 mg/gMSO to 197 mg/gMSO, respectively, when using sugarcane filter cake from the Brazilian sugar-energy sector. This suggests that sugarcane filter cake may be an effective substrate due to its rich organic content and favorable fermentation characteristics. On the other hand, CA production from cassava peel was low (0%) under the experimental conditions tested for acid contents, probably due to its limited nutritional composition. These results highlight the potential of sugarcane bagasse as a promising raw material for the sustainable production of AC through AD with methanogenesis inhibition, contributing to the development of renewable energies and bioproducts.