Conference Agenda

This study presents an ecotoxicological assessment of two medicinal plants (Hypericum aciculare and Achyrocline alata) collected in the upper micro-watershed of the Las Gradas River, located in Chugur, Cajamarca, using Laser-Induced Breakdown Spectroscopy (LIBS). Plant samples were oven-dried at 70°C, ground, and sieved to produce pellets. These were then analyzed with a LIBS system covering a spectral range from 181 to 1100 nm. The study aimed to identify exogenous contamination using elemental profiles reported by NIST and AndesLIBS software. Mercury (Hg) and lead (Pb) were the target elements. The spectral data were processed using supervised Principal Component Analysis (PCA) for decomposition into principal components. All statistics were performed in R. The results demonstrate that LIBS is a rapid and effective technique for analyzing organic substances, revealing characteristic emission peaks in experimental assays. Furthermore, semi-quantitative analysis confirmed the presence of two heavy metals, mercury (Hg) and lead (Pb). Their distribution varied among sampling sites, possibly due to anthropogenic activities. PCA enabled quick discrimination among samples using fused LIBS data, highlighting this method's potential for future studies. LIBS is a reliable, rapid technique for detecting heavy metal contamination in underexplored species, such as medicinal herbs.

Sustainable access to groundwater is a growing challenge due to population growth and pressure on water resources. Given this situation, there is a need for accurate tools to locate and manage groundwater efficiently. The objective of this study is to determine geophysical prospecting methods for identifying optimal groundwater areas. To this end, 48 articles published between 2019 and 2024 from Scopus and Web of Science were analyzed. The registration and selection of studies was carried out by combining the PICO strategy and the PRISMA2020 statement. The results show that electrical resistivity tomography, vertical electrical sounding (VES), and ground-penetrating radar stand out for their ability to generate detailed images in various geological contexts. In particular, VES reaches depths of up to 200 m at a low cost. From a sustainability perspective, the incorporation of these techniques contributes directly to the fulfillment of Sustainable Development Goal 6 (Clean Water and Sanitation), as they improve water security and strengthen adaptation strategies in the face of climate variability. However, challenges remain associated with the transfer of these technologies to contexts with lower technical and financial capacities.

This study evaluates the feasibility of using a solid oxide fuel cell (SOFC) as the primary mover in a cogeneration system for hotel applications. A 280kW SOFC system was proposed to meet both the electrical and thermal demands of a hotel, with the thermal energy utilized for hot water production and steam generation for laundry operations. The analysis revealed that, despite an installation cost of $840,000, the system offers significant cost advantages, producing energy at $0.12/kWh compared to the grid operator’s $0.27/kWh, resulting in annual savings exceeding $300,000 and a simple payback period of 2.79 years. Power Purchase Agreements (PPA) further enhance the feasibility, where third-party investment in infrastructure reduces the financial burden of the high initial costs. Future work will explore integrating an absorption chiller for cooling, simulating SOFC performance with advanced tools, and assessing the viability of alternative fuels such as propane to improve flexibility and reduce costs.

The present research project aims to evaluate environmental air quality parameters and analyze the influence of meteorological variables within the district of La Oroya, Yauli Province, Junín Department, Peru, during the month of April 2025. Analyses of air quality parameters related to SO₂, together with environmental monitoring, constitute fundamental and necessary tools to assess environmental impacts and to adopt environmental management measures related to air pollution processes. Objectives: One of the objectives of this study is to analyze the SO₂ parameter and determine the influence of meteorological variables on the concentration and dispersion of SO₂ in the environment of Junín, in order to establish preventive measures against pollution. Methods: The methodology applied consisted of the analysis and collection of data from the database of the Environmental Surveillance Center of OEFA – La Oroya Metallurgical Complex, regarding SO₂ parameters and meteorological variables. Results: The 24-hour concentrations of sulfur dioxide (SO₂) obtained in April 2025 exceeded the reference Air Quality Environmental Standard (ECA) value of 250 µg/m³ on one (1) occasion (Supreme Decree No. 003-2017-MINAM). Likewise, the air quality ECA for sulfur dioxide of 250 µg/m³ was exceeded (Supreme Decree No. 003-2017-PCM). The maximum 24-hour SO₂ concentration was 255.3 µg/m³, recorded on April 26, 2025. Conclusions: During the April 2025 monitoring period at the CA-CC-01 environmental monitoring station, the wind direction showed a predominance from the west (W) with a monthly frequency of 23.3%, followed by west-southwest (WSW) winds with 14.6%.

Arsenic is a priority contaminant in various water sources and poses a significant risk to public health. This study presents a systematic review of the literature on technologies for removing arsenic from contaminated water, considering publications from the period 2022–2025. The PRISMA methodology was applied and a search was conducted in the Scopus database, finally selecting 29 articles according to inclusion and exclusion criteria. The findings show that the most widely used technologies are adsorption and electrocoagulation, in addition to advanced oxidation processes and emerging approaches based on nanomaterials and combined technologies. Likewise, knowledge gaps are shown in relation to the regeneration and reuse of adsorbents, the management of generated waste, scaling up in real conditions, and the economic evaluation of the viability of the reported alternatives.

Arsenic contamination in groundwater poses a significant public health risk, motivating the development of sustainable treatment alternatives. This study presents a systematic literature review on the use of fruit and vegetable wastes as bioadsorbents for arsenic removal in groundwater. The PRISMA methodology was applied, considering studies published between 2019 and 2025 under defined eligibility criteria. Findings indicate that agro-industrial waste-derived bioadsorbents can achieve removal efficiencies above 80%, while iron-modified materials often exceed 90% in reported cases. Key gaps remain regarding adsorbent regeneration and reuse, anion interference under real-water matrices, and scalability/field validation, which are critical for practical deployment.