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The authors would like to make the following corrections about the published paper [...]

In this study, lignocellulosic material derived from guava tree pruning was used to make pellets in a laboratory machine. The following experiments were conducted to identify the properties of the biomass samples before the pelletizing process: chemical analysis, proximal analysis, elemental analysis, ash microanalysis and thermogravimetric analysis (TGA-DTG). The following analyses were performed on the densified material: moisture content, particle density, bulk density, impact resistance and calorific value. The guava pellets evaluated, with respect to open fires, mitigate the CO2, CO, CH4, HCNM, EC, OC and PM2.5 emissions. Emissions per unit of consumed energy were reduced by 8 times for PM2.5, almost 5 times for HCNM, 3 times for CH4, 7 times for CO, 2 times for CO2, 6 times with respect to EC and almost 30 times for OC. The results of the physical and energetic evaluation of the pellets indicate good potential for its use as a solid densified biofuel.

A traditional use of bioenergy is the main source of residential energy in developing countries, essentially using firewood to cook, boil water or heating affecting people in developing countries. Improved cook stoves are more efficient and less polluting, and there is a need to evaluate different design options to facilitate their adoption. There are different types of very economical improved cookstoves with high combustion efficiency. In Mexico, multiple projects about cook stoves have been carried out, the root of this study being one of them: the Patsari cook stoves. The goal of this project was to modify previous stove designs to align with local people’s habits and traditions. This study shows the importance of including the participation of users in the design of the portable model of Patsari cook stoves, applying the Design Thinking methodology. Many designs or design changes have been carried out on cook stoves by different researchers, but users often do not adapt to them. This article, through a field study, shows the importance of integrating theoretical analyses along with user experiences to facilitate the adoption of improved cook stoves and ensure their success.