Within the context of the UN Sustainable Development Goals for the Agenda 2030, this article aims to explain and understand the usefulness of energy audits and their potential to reveal energy efficiency opportunities in a small public building located in northwestern Mexico. The methodological structure was adopted from the Cleaner Production–Energy Efficiency Manual published by the United Nations Program for the Environment. A case study approach was employed to examine how energy audits might potentially increase energy efficiency opportunities in the participating building. Amongst the findings, the primary source of energy wastage was occupants’ behaviors. Furthermore, this study showed that energy audits could be useful to establish a baseline in situations where previous data were not available, to allow comparisons as well as to identify opportunities in old buildings for the purpose of increasing their energy efficiency performance. As a practical implication of this research, the Sonora government can be in a better position to assist the Mexico federal government in reaching some of the country’s General Law on Climate Change objectives, particularly the one related on cutting down greenhouse gas emissions by 30% by the year 2020, and 50% by the year 2050, compared to those registered in 2000.

The aim of this research was to separate the over-the-counter nonsteroidal anti-inflammatory drug (NSAID), ibuprofen, from an aqueous solution using the adsorption method, as this NSAID is one of the most globally consumed. An adsorbent was crafted from the Agave angustifolia bagasse, a byproduct of the bacanora industry (a representative alcoholic beverage of the state of Sonora, in northwestern Mexico). Three bioadsorbents (BCT1, BCT2, and BCT3) were produced via pyrolysis at a temperature of 550 °C, with slight variations in each process for every bioadsorbent. The bioadsorbents achieved material yields of 25.65%, 31.20%, and 38.28% on dry basis respectively. Characterization of the bagasse and adsorbents involved scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). The biomass morphology exhibited a cracked surface with holes induced via the bacanora production process, while the surface of the bioadsorbents before ibuprofen adsorption was highly porous, with a substantial surface area. After adsorption, the surface of the bioadsorbents was transformed into a smoother grayish layer. The macromolecules of cellulose, hemicellulose, and lignin were present in the biomass. According to functional groups, cellulose and hemicellulose degraded to form the resulting bioadsorbents, although traces of lignin persisted after the pyrolysis process was applied to the biomass. In an adsorption study, BCT1 and BCT2 bioadsorbents successfully removed 100% of ibuprofen from aqueous solutions with an initial concentration of 62.6 mg/L. In conclusion, the biocarbon derived from Agave angustifolia bagasse exhibited significant potential for removing ibuprofen via adsorption from aqueous solutions.

El enfoque de movilidad sustentable considera, entre otros, el ciclo de vida de los medios de transporte utilizados. Al final de su vida útil, estos vehículos generan grandes volúmenes de residuos sólidos. En este artículo se analiza la posible extensión de la vida útil de medios de transporte público en desuso a través de un anteproyecto arquitectónico con una segunda alternativa de uso. Se propone el uso de equipamiento bioclimático en elementos con potencial de reutilización. Se aplican diversas herramientas, como la Matriz de Leopold, para ponderar sus potenciales impactos contrastando el uso de materiales comunes. Los hallazgos demuestran el impacto positivo significativo de la reutilización de las unidades. Se concluye que el desarrollo de la alternativa de reutilización es positivo en los tres componentes, físico, biológico y socioeconómico, en comparación con una alternativa similar analizada con especificaciones de materiales de uso común en la zona.