Emerging contaminants in water bodies is an issue of concern due to their impact on the ecosystem and human health. The COVID-19 pandemic has forced implementation protective measures such as social distancing, lockdowns, remote work, which have affected tourism influx. This study aimed evaluate occurrence emerging pollutants Esmeraldas, a coastal province Ecuador, before during highly touristic region. For this purpose, surface waters from 14 beaches ten river mouths were sampled at...

The hydrocarbons that contaminate water are difficult to remove, among other things, due their hydrophobic nature. A surfactant is one way facilitate contact between the treatment agents. This research prepared a biological from whey fermentation through Streptococcus thermophilus bacteria. To optimize its production, complete factorial design was carried out, varying factors temperature (38, 40, and 42 °C) time (24, 48, 72 hours), response variable amount of produced. It found highest...

Water chlorination, fundamental for its microbiological safety, generates by-products, such as trihalomethanes (THMs), potentially associated with carcinogenic and reproductive risks. This study determined the levels of chloroform (CHCl3) in drinking water Cuenca, Ecuador, a topic that has been little explored region. During five months, samples were collected from three treatment systems (Cebollar, Tixan, Sustag), situ measurements physicochemical parameters free chlorine, pH, temperature,...

The presence of fungal spores in water poses a significant risk to public health, requiring effective inactivation strategies. Ultraviolet (UV) radiation is widely used approach, traditionally employing mercury vapor lamps. However, these lamps have efficiency limitations and contain hazardous materials. As an alternative, ultraviolet light-emitting diodes (UV-LEDs) emerged as safer more sustainable option. Despite their advantages, research on efficacy against remains limited. This study...

This study evaluated the efficacy of removing estradiol, sulfamethoxazole, and paracetamol from water using titanium dioxide (TiO2). A layer TiO2 was fixed onto ceramic tiles exposed to a solution pharmaceuticals under 254 nm ultraviolet light. The exhibited surface area 2.78 m²/g with Methylene Blue, which favors adsorption subsequent degradation pharmaceuticals. After 60 minutes exposure, removal estradiol 69.43%, 50.84%, sulfamethoxazole 24.80%. Additionally, it determined that kinetics...

Industrial development has made new products available to people make their lives easier. Items such as food, cleaning, personal care and health products, among others, are processed, sold consumed daily by all age groups. These include in formulation inorganic organic chemicals with the purpose of improving or increasing some properties, making them more attractive consumer. substances strictly controlled during production so that final product may be safely consumed. In most cases,...

As the number of legal and illegal gold mining sites increases in Andes–Amazonia region, integrative methods to evaluate effects pollution on freshwater ecosystems are paramount importance. Here, we sampled water sediments 11 potentially affected by activities Napo province (Ecuador). The environmental impacts were evaluated using following lines evidence (LOEs): physicochemical parameters, metal exposure concentrations, macroinvertebrate community response (AAMBI), toxicity conducting...

Gold mining (GM) is a major source of metals and metalloids in rivers, causing severe environmental pollution increasing the exposure risks to residents surrounding areas. Mining Ecuadorian Amazonia has dramatically increased recent years, but its impacts on Indigenous local populations that make use rivers are still unknown. The aim this study was assess adults children caused by freshwater ecosystems contaminated with tailings released GM activities 11 sites upper Napo River basin,...

In developing countries, stabilization ponds are the most common facilities wastewater treatment, where microbial consortia workhorse for removing organic contaminants. Fungi play an important role in removal of matter. However, their efficiency recalcitrant pollutants such as antibiotics and dyes still needs to be determined. The present work evaluates four fungal strains isolated from treatment lagoon systems (aerobic-anaerobic-anoxic) remove persistent pollutants: Tilmicosin,...

Due to the environmental impact of using fossil fuels, alternatives for generation biofuels are being studied. An option this problem is obtain biodiesel from recycled vegetable oil. Studies show that basic homogeneous catalysis has advantages such as speed over other types catalysis. However, most these studies conducted with unused or little-used oils. Therefore, study aims oil collected municipal collection centers by transesterification applying NaOH KOH catalysts. The used was filtered,...

In this work, Ti-pillared bentonites were evaluated to remove ciprofloxacin (CIP) from the aqueous solution. Pillared sodium bentonite (BSP) and pillared calcium (BCP) prepared by means of sol–gel method using titanium tetraisopropoxide with calcination for 3 h at 500 °C. They characterized BET N2 adsorption, subjected X-ray diffraction Fourier transform infrared spectroscopy. The results show that surface area increased after process, more than natural ones. has a porous structure, larger...

En ese artículo se presentan los resultados de un estudio conocimientos y actitudes en sexualidad educación sexual dirigido a docentes 17 colegios públicos la ciudad Cuenca-Ecuador. Se evaluó el impacto curso capacitación sobre que fue planificado por proyecto VLIR-UOS “Promoción salud Adolescentes” Universidad Con objetivo evaluar efecto del curso, aplicó 2 grupos profesores no asistentes como testigos, una evaluación diagnóstica final, través 3 cuestionarios: cuestionario con siguientes...

Derivation and application of

The biomass of crops in rotation, such as that generated by the banana plant, is an interesting source lignocellulose due to its composition and availability. This research aimed compare amount glucose obtained from different parts plant (leaves, rachis, pseudostem) hydrolysis with sulfuric acid at 100 °C. reaction was analyzed determine water reagents consumed versus obtained. optimal time concentration were studied between 0–30 min 3–5% v/v, respectively. best results pseudostem 13.02 gL−1...

In certain countries where fresh water is in short supply, the effluents from wastewater treatment plants are being recycled for other uses. For quality assurance, tertiary disinfection treatments required. This study aims to evaluate inactivating efficacy with an ultraviolet (UV) system on fecal bacteria of urban facilities and post-treatment influence environmental illumination. The effect different UV doses was determined native standardized lyophilized strains Escherichia coli right...

Ultraviolet disinfection has been extensively studied in recent years, especially bacteria; however, there are still insufficient studies fungal spores. Moreover, most use static batch reactors instead of continuous flow reactors, which used mainly at the industrial scale. In present work, inactivation and reactivation characteristics two species filamentous fungi were using a single-pass flow-through UV-C reactor (FTR). For this purpose, Aspergillus niger Penicillium sp. spores suspended...

Introduction: Emerging contaminants (ECs) are substances with widely diverse chemical structures that may pose a risk to the environment and human beings. The limited scope of water treatment facilities, particularly in low middle-income countries, allows ECs be continuously introduced become part cycle again for potabilization. In this work, we study first time presence these compounds drinking five Ecuadorian cities. Methods: interest were mainly pharmaceutical commonly present...

Methylene Blue (MB) generates colored effluents that are difficult to treat. Solid Scale Waste (SSW) was studied as a catalyst in Heterogeneous Fenton process for MB removal. The SSW identified non-porous material with 97.5 % iron oxides. For the oxidative process, exposure light, amount of catalyst, and H2O2 dose were tested. best conditions enhance removal 0.01g 0.035 mL H2O2, light; under these conditions, percentage 97.41 achieved. kinetics results showed pseudo-first-order reaction an...

Diferentes estudios han demostrado que las diferencias de género están vinculadas con los factores macro-culturales. Los estereotipos dan forma a roles en América Latina son el machismo y marianismo. A pesar ambos conceptos extensamente conocidos, contraste la gran cantidad publicaciones teóricas sobre importancia del machismo, investigaciones prácticas marianismo su infancia. El presente estudio explora cómo adolescentes cuencanos experimentan sentido género. Para ello, se llevaron cabo...