Conference Agenda

This research aimed to determine the relationship between water quality and the BMWP/Col and EPT indices of benthic macroinvertebrates in the Cajamarquino River. The study assessed key physicochemical parameters such as pH, electrical conductivity, temperature, dissolved oxygen, total dissolved solids (TDS), and salinity, alongside the identification of benthic macroinvertebrates. Biotic indices (BMWP/Col and EPT) and diversity indices (Shannon and Simpson) were applied. Additionally, hydromorphological and riparian vegetation characteristics were evaluated using the IHF and QBR indices, complemented by a plant inventory from sampling stations.

The research followed an experimental design with two sampling campaigns: one in the dry season and another in the rainy season. Results showed pH values between 8.3 and 9.46, with a maximum conductivity of 760 µS/cm. The mean salinity was 0.18‰, and the average temperature was 18.4°C. The riparian quality indices (IHF and QBR) indicated intermediate habitat quality, with conditions ranging from “with limitations” to “adequate.”

Regarding biotic indices, EPT and BMWP/Col results revealed poor water quality, with pollution levels ranging from critical to very critical. These findings highlight a close relationship between physicochemical parameters, benthic macroinvertebrate composition, biotic and diversity indices, and water quality. Ultimately, this study enhances the understanding of the ecological status of the Cajamarquino River.

Abstract– The non-primary manufacturing sector in Peru represents 12.7% of GDP, but it is a sector that is decreasing mainly due to the slowdown of the economy, national and international competition; It should be noted that the case study company is the only one that produces polypropylene notex fabric masks in Peru with internationally certified quality and has China as its main competitor; Thus, faced with this situation, the company sought to develop competitiveness alternatives that would allow it to enter new markets but at the same time be sustainable, which is why it chose as an alternative and set the objective of implementing the operational strategy of cleaner production. For the development, the Peruvian technical standard guide GP.900.200 2021 was used, as well as various publications. There is a 48% reduction in energy consumption, 82% in usable waste and 74% in non-usable waste, and the amount of finished product increased by 8%.

This study aimed to evaluate the influence of air pollution on the diversity and abundance of lichens in the district of San Miguel de Pallaques, Cajamarca, using epiphytic lichens as bioindicators. Sampling was conducted in six zones, classified as urban and rural areas, identifying 235 lichen individuals. Foliose lichens predominated, with 176 individuals, compared to fruticose lichens, which accounted for 59 individuals. The Atmospheric Purity Index (API) and Shannon Diversity Index (H’) showed significant variations between zones. Pabellon and San Juan exhibited better environmental conditions, with API values of 69.7 and 56.8, respectively, whereas Plaza de Armas reflected higher pollution with an API of 6.02. Likewise, the highest diversity was recorded in San Juan, with H’ = 1.06, demonstrating a correlation between air quality and lichen diversity. The study concluded that air pollution negatively impacts lichen diversity and distribution. Furthermore, foliose lichens proved to be more sensitive and effective as bioindicators. Therefore, this study

Water is the most impacted resource by different industrial activities such as mining, textiles and poultry farming, which dump their waste into the water resource without any prior treatment. In view of this, the present research aims to give added value to chicken feathers, having as its objective: To determine the use of chicken feathers as a treatment for the removal of water contaminated simulated with lead nitrate, the study has a quantitative approach, has an experimental design, as an instrument it is based on the background, laboratory materials, registration form, the SPSS program and Microsoft Excel, chicken feathers were also collected from a local poultry farm, which went through a cleaning process and then were weighed in different quantities, likewise water contaminated with lead nitrate 1000(mgPb/L) was simulated in the Biology laboratory of the UPN. Two repetitions were made with four samples each with different quantities of feathers. Finally, the results of the study are favorable, managing to remove 98.31% and 97.72(%) of lead nitrate, with 3 grams of chicken feathers being adequate in a time of 60 minutes. This project provides an alternative solution that is feasible, economical and valuable.

The inadequate management of urban solid waste represents a challenge for the environmental sustainability of Peru. This study estimates the electrical energy generation potential of urban solid waste in the province of Trujillo, characterized as 55.46% organic, 26.31% inorganic and 8.58% hazardous. Using Aspen Plus® software, the gasification process was modeled using a downdraft reactor and, using Stat-Ease 360 ​​V.23.1 software, the energy yield of the synthesis gas was optimized. The ANOVA demonstrated an excellent fit of the model for a minimum air-fuel ratio of 0.6 and a maximum temperature of 900 °C, achieving an optimal thermal generation performance of 462.08 TJ/h and a calorific value of 11.16 MJ/kg . The synthesis gas feeds the Jenbacher 624 motor generators, which have an electrical efficiency of 42.1%, obtaining a power of 52.96 MW. With this application it is possible to cover the energy demand of approximately 91.86% of the urban population of the province of Trujillo. Additionally, a reduction in CO₂e emissions was estimated at 209,730 tons per year due to the substitution of fossil energy.

Population growth has increased the generation of organic waste. Composting is an effective strategy to recycle this waste and improve soil quality. In this context, the use of Hermetia illucens in composting has attracted great interest due to its efficiency in reducing organic waste. Focused on Sustainable Development Goal 13 (Climate Action), this review article aimed to gather information on the efficiency of Hermetia illucens in composting. For the systematic review, we used research selected according to PRISMA methodology from Scopus and Web of Science databases, published between 2020 and 2024. The results showed that Hermetia illucens larvae achieved biodegradation of organic waste in a period of 12 to 14 days, as opposed to traditional composting (6-7 weeks). The compost obtained had high levels of nutrients such as nitrogen, phosphorus, potassium, zinc, manganese and boron. In conclusion, the use of Hermetia illucens is highly efficient in the rapid decomposition of organic waste and produces nutritious compost, presenting itself as a sustainable solution for waste management.