Conference Agenda

Considering the environmental pollution caused by cigarette butts, due to their toxic content which hinders their proper recycling, this study applied a mineralizing and detoxifying treatment using saprobic macromycetes—Pleurotus ostreatus and Pleurotus dejamor—as regenerative treatment systems for the mineralization of toxic substances, particularly through the enzymatic degradation of cellulose and lignin fibers via cellulase activity. Fungal growth occurred under controlled conditions of humidity, temperature, and light exposure. The degradation of lignocellulosic fibers was monitored using SEM analysis at 45 and 75 days, while EDS analysis was used to evaluate the mineralization of key elements. Weekly evaluations (every three days) over a four-month period confirmed the progressive growth of the mycelium on the cigarette butt substrate. The results showed increased mineralization of Cl and S at 45 days, and of Ti, Si, and Al at 75 days. Controlled environmental parameters were essential for basidiomycete development, with carbon availability being a key growth factor. The resulting substrate is characterized by being partially degraded, demineralized, and containing fewer toxic substances; therefore, it can be reused as raw material, contributing to circular economy strategies, improving waste valorization, and ultimately achieving zero environmental impact.

This study evaluated the biodegradability of expanded polystyrene (EPS) using Tenebrio molitor, Galleria mellonella, and Zophobas morio larvae, identifying Zophobas morio as the most efficient species, with significantly higher consumption (p<0.05) and 65.64% degradation of EPS, without leaving residual microplastics in the excreta, according to FTIR analysis. The optimal diet for all species consisted of 25% EPS supplemented with wheat bran, suggesting that a nutritional substrate improves intestinal microbial activity and enzymatic degradation. The results support the use of Zophobas morio as a sustainable and effective bioremediation strategy for plastic waste management.

Abstract- The objective of the research was to validate the PISCO v2.1 and RAIN4PE satellite precipitation products in the headwaters of the Amazon basin – Mashcón Basin, Peru. Rstudio programming tools and the QGIS Geographic Information System were used. PISCO (Peruvian Interpolated data of the SENAMHI's Climatological and Hydrological Observations) and RAIN4PE satellite products were used. Two ground stations were used, Granaja de Porcón (1999-2015) and Augusto Weberbauer (1981-2015). Rainfall from the Weberbauer and Granja de Porcón ground stations was compared with satellite products. RAIN4PE underestimated rainfall at the Granja de Porcón station and overestimated it at the Weberbauer station. The statistical metrics between PISCO V.2.1 and the Weberbauer station were NSE=0.958, r=0.979), RMSE=10.076, and BIAS=-0.0066). Meanwhile, PISCO V.2.1 and Granja de Porcón had NSE=0.928, r=0.976), RMSE= 26.788, and BIAS=-0.125).

Keywords: Satellite product PISCO v2.1 and RAIN4PE, ground station Granja de Porcón and Augusto Webervauer

The post-distillation residues of essential oil from medicinal and aromatic plants, such as oregano, are potential sources of natural polyphenols. The solid residues from the essential oil industry are produced in significant volumes and can be used as natural sources of bioactive compounds. Therefore, this work was designed to evaluate the effect of three extraction methods on the total polyphenol content and the antimicrobial activity of the phenolic extracts obtained from post-distillation solid residues. The total phenolic content (TPC) and the antimicrobial activity of the extracts obtained by three methods were evaluated: maceration (M), ultrasound and maceration (US+M), and ultrasound (US) against Escherichia coli and Bacillus subtilis at concentrations ranging from 625 to 5000 mg/L. The ultrasound (US) extracts showed the highest total phenolic content (13000 mg/L gallic acid equivalents, GAE), while the minimum inhibitory concentration (MIC) of the rosemary essential oil extract (RPAEO) for E. coli was found to be 5000 mg/L in all three extraction methods, and for B. subtilis it was 5000 mg/L with the US+M and US extracts and 2500 mg/L with the M extract. The experimental findings pointed to the potential use of post-distillation oregano essential oil residue extracts as antimicrobials in the food industry, in addition to being rich sources of phenolic compounds.

The Lachay National Reserve (LNR) is a unique coastal fog-oasis (lomas) ecosystem whose functioning depends on the capture of atmospheric moisture. This study aimed to synthesize recent evidence on anthropogenic pressures and their reported effects on biodiversity and ecosystem services in the LNR through a systematic review with qualitative synthesis of literature published between 2019 and 2025. A total of 30 documents were analyzed, and the evidence was organized using thematic coding by pressure type, reported ecological impacts, and associated ecosystem services. The results identify unregulated tourism, overgrazing, urban expansion, and commercial activities within or surrounding the protected area as the predominant pressures. Frequently reported impacts include solid-waste accumulation, loss of vegetation cover, soil compaction, disturbance to wildlife, and habitat fragmentation, with potential implications for services such as microclimatic regulation, fog-water capture, soil conservation, and biodiversity maintenance. The findings indicate that the main challenge lies in the management of these pressures, as limitations in enforcement, weaknesses in public-use management, and gaps in environmental education are repeatedly documented. Therefore, strengthening control measures, improving solid-waste management, and enhancing land-use planning in the LNR’s area of influence are priorities to increase conservation effectiveness.

Dye-sensitized solar cells (DSSCs) are a low-cost photovoltaic alternative, particularly attractive for applications where semi-transparency and architectural integration are critical. This study conducts a systematic review of the scientific literature published between 2020 and 2025 to identify advances, limitations, and trends in the use of anthocyanin-rich natural dyes as sensitizers in DSSCs and, based on the evidence, to support a conceptual design proposal for a low-cost semi-transparent solar panel. Fifty studies were screened and twenty relevant articles were selected using criteria related to materials, device architecture, photovoltaic performance, and reported applications. The reviewed evidence indicates that anthocyanins extracted from accessible fruits and flowers can act as functional sensitizers; however, performance is often constrained by pigment photochemical instability, extraction efficiency, and adsorption kinetics on the semiconductor surface, as well as charge recombination losses. The literature also highlights that using mesoporous TiO₂ photoanodes and carbon-based counter electrodes can improve the cost–performance trade-off and the sustainability profile of the system compared with critical components such as ruthenium- and platinum-based materials. Based on these findings, a conceptual design is proposed for semi-transparent DSSCs targeting solar windows, active façades, and greenhouses (agrivoltaics). Overall, natural-dye-based DSSCs emerge as a complementary option for low-power distributed generation in BIPV solutions where semi-transparency provides added value.