Conference Agenda

Poor solid waste management in supply centers represents a serious environmental, health, and social problem in urban cities, as there is a latent risk of soil, water, and air pollution. In this context, this study aimed to evaluate the impact of implementing an environmental awareness program on solid waste management in the Ganímedes market in San Juan de Lurigancho, Lima, Peru. To this end, the current situation of solid waste management by all merchants was analyzed, and the level of knowledge, attitudes, and environmental practices was identified before and after the awareness program was implemented. The methodology is quantitative, with a quasi-experimental design. Structured surveys were administered to collect information on the variables of interest, before and after the merchants participated in activities such as talks, workshops, and the distribution of informational material. The results show that the program was highly effective, as the merchants' perceptions improved significantly (p – value of 0.00 in the paired t – test), while a positive relationship was also evident between greater environmental knowledge acquired – through the environmental awareness program – and improvements in environmental practices related to solid waste management (Pearson's correlation coefficient of 0.852 with a p-value of 0.00). Therefore, this study contributes to the generation of relevant information for strengthening local environmental management in urban commercial spaces.

The growth of the vehicle fleet in Lima has increased environmental noise [1], mainly associated with high traffic volume and congestion [1]. The TomTom ranking places Peru among the countries with the highest levels of congestion and traffic-related time loss worldwide. According to the ATU (2024), the Naranjal station is one of the highest noise-generating areas, classifying it as a critical hotspot. In addition to the high concentration of people and vehicles in their surroundings, there is the frequent use of vehicle horns by drivers [2]. Although this device was designed for emergency situations, its repeated and inappropriate use contributes significantly to noise pollution [3]. In the surroundings of the station, sound pressure levels exceed 70 dB(A), surpassing levels recommended by the WHO and the Environmental Quality Standards (EQS). The greatest noise generation occurs during the day, due to the high concentration of public transport vehicles and taxis, as well as commercial activity [4]. In this context, the present study aims to determine the sound pressure levels attributable to horn use, in order to quantify its contribution to environmental noise at the Naranjal station and to generate evidence to support actions for controlling its use. The results indicate that horn noise contributes 9,6 dB(A) to the total environmental noise, highlighting the need to implement noise control and prevention strategies focused on modifying driver behavior and protecting the auditory and emotional health of exposed workers.

Environmental education in university training represents a strategic component for promoting sustainable practices. The objective of this study was to analyze the level of environmental education among Peruvian university students and to identify significant differences according to gender. The research was based on a quantitative, basic approach, employing a cross-sectional descriptive-comparative design. The sample consisted of 910 university students from the Ica region (Peru), selected through non-probabilistic convenience sampling. A Likert-scale questionnaire was administered for data collection. The results revealed that 71.8% of the students demonstrated a high level of environmental education, indicating an adequate level of engagement with environmental care. However, a proportion of students (48.0%) requires strengthening in the environmental knowledge dimension. The Mann–Whitney U test showed statistically significant differences in the level of environmental education according to gender (p < 0.005).

Increasing urbanization and demand for water resources have intensified the need for efficient technologies for domestic wastewater treatment. The present literature review research evaluated the most efficient technologies in wastewater treatment, aligning with Sustainable Development Goal 6: Clean Water and Sanitation. Two hundred scientific articles in English from the Scopus and Web of Science databases were analyzed, selecting 72 that met the established criteria. The results showed that the best technologies in domestic wastewater treatment are vertical flow wetlands using the filtration method and biochar using the adsorption method. The studies showed that treatment with vertical flow wetlands achieved COD, BOD and TSS removals with values of 97.5%, 99% and 94%, respectively. On the other hand, biochar showed removal percentages in color, turbidity, phosphates and E. coli of 97.06%, 97.50%, 82.67% and 73.06%, respectively. It was concluded that these technologies offer solutions adapted to various contexts, significantly improving the quality of treated water and contributing to environmental protection.

The purpose of this research is to evaluate the microbiological quality of indoor air in the San Sebastian Market, a closed environment of relevance to public health, located in the city and department of Cajamarca. Currently, there are few local studies of this type, despite the fact that they are of great value for understanding public health risks and disease prevention in hightraffic enclosed spaces. For this reason, the present study evaluated the microbiological quality of indoor air in the San Sebastian Market in Cajamarca, a highly frequented space. The CFU results revealed a non-homogeneous microbial load, with the Fish area (P3) recording the highest average (129.0 CFU), followed by Vegetables (P4) (104.5 CFU), while Food (P2) showed the lowest value (34.5 CFU), data that suggest that microbial concentration depends on zonal conditions such as product type, humidity, and ventilation, favouring proliferation in areas where fresh or wet foods are handled. Bacterial identification showed the recurrent presence of Staphylococcus and Micrococcus sp. In handling areas (P1-P4), associated with perishable products and microenvironmental conditions. The Entrance and Exit areas (P5P6) revealed a more varied composition, including Streptococcus spp., Pseudomonas spp., Legionella pneumophila, and Corynebacterium, indicating environmental and transit contamination. For fungi, Penicillium spp., Aspergillus niger, Cladosporium herbarum, and Candida sp. were recurrent, especially in handling areas.

Materials are key in building construction, as well as in the impact they have on the environment. This systematic review focused on identifying the feasibility of using materials with construction waste for sustainable construction in urban areas. To identify important questions within the topic, we used the PICO table, which allowed us to apply inclusion and exclusion criteria. Consequently, this led us to use the PRISMA methodology, enabling us to narrow down a number of articles. That being said, it was found that the use of sustainable materials such as binders is beneficial, as it generates 25.3 MPa of structural strength, thus concluding that the implementation of sustainable construction represents a viable alternative to reduce environmental impact and minimize waste production.