esaetton@ulima.edu.pe

Este proyecto ha hecho posible el diseño, la construcción y la implementación de un reactor que concentra la radiación solar sobre un mezclador estático de acero impregnado con nanopartículas de óxido de titanio, para producir radicales hidroxilo que tienen efecto bactericida. Será aplicado en la desinfección de agua para el riego de cultivos hidropónicos.

esaetton@ulima.edu.pe; mprutsch@ulima.edu.pe; cseinfel@ulima.edu.pe

esaetton@ulima.edu.pe

Se presentan las características y propiedades del estado ionizado de la materia, conocido como “plasma”, así como la clasificación, ventajas y beneficios que esta tecnología proporciona en diversas aplicaciones industriales. También se describen los reactores más utilizados para estos procesos: los de evaporación iónica (sputtering) de tipo glow discharge y los de resonancia ciclotrónica electrónica (ECR).

Investigación en la Universidad de Lima: Desalación de agua marina con energía solar (2013).

There are presented desalination results by using a parabolic-trough concentrator (PTC) device of 5.5 m2, 0.7 m of line focal distance and aligned in the East—West direction. The length of the PTC is 2.5 m and its rectangular absorber cavity has 1m length made of black aluminum. The equipment is located in Cocayalta (48 km from Lima, with 700–850 W/m2) and there were made simple modifications on the cavity to increase the fresh water production, from 3250 cm3 (3.25 liters) using the simplest model to 6360 cm3 (6.36 liters) with the thermal insulation and wind protection model, that represents an increase of about 95%. Finally, water analysis showed a good quality of the fresh water obtained.

The present study demonstrates that the current use of stepped solar distillers can be enhanced to increase seawater desalination. To this end, we designed a stepped solar still with internal reflective walls and attached a set of borosilicate vacuum tubes with heat pipes; these heat pipes, in turn, were attached to plates containing seawater inside the distiller. The average global efficiency was calculated in 71.5%; the volume of distilled water per unit area (designated as V'exp) and the volume of distilled water per unit area of distiller and per unit daily solar energy (V¿exp) were also calculated. On a sunny day, with an incident solar energy of 19.93 MJ/m2, V'i was 5690 cm3/m2 and V¿exp was 285.5 cm3/m2 MJ; meanwhile, on a cloudy day, with 12.63 MJ/m2 of energy, V'exp was 3648 cm3/m2 and V¿exp was 288.8 cm3/m2 MJ. Since V¿exp varies only slightly under different weather condit...

The energy assessment carried out in a middle-sized CSP parabolic field of 120 m2 is presented; it provides pre-heating water at 70°C to the boilers of the lemon essential oil extraction process in an agro-industrial company located in Piura, at the border of Sechura desert in Peru. The parabolic cylindrical solar concentrators are made with glass reflectors, an automatic solar tracking system, and collector tubes through which water flows. It was measured that each collector converts solar energy and transfer it as a thermal energy to the water with an average efficiency of 18.1%. Considering this result, theoretically the whole solar field could provide 550.37 GJ/year for water preheating, which is equivalent to saving 28151.8 liters of LPG, and 46.87 tons of CO2 released to the environment. However, after a year of operation, the solar field provided only 99.59 GJ for water preheatin...

hvillega@ulima.edu.pe;jquinof@ulima.edu.pe;esaetton@ulima.edu.pe

Las celdas microbianas de combustible (MFC por sus siglas en inglés) forman parte de las tecnologías limpias que permiten la obtención de energía a partir de fuentes renovables: aguas contaminadas que necesitan ser tratadas. Aunque la generación de energía es un hecho observable, se tiene claro que la principal ventaja de las MFC es el tratamiento del agua mientras se genera energía, lo cual representa un avance importantísimo en la ciencia ambiental ya que los sistemas de tratamiento de las aguas residuales consumen energía. La innovación de este proyecto consiste en diseñar y construir un prototipo de celda microbiana de combustible formada por la integración de 25 microceldas con 130 µL de volumen de la cámara anódica e integrados en una sola estructura, que trate una muestra de agua residual doméstica con 500-2000 mg/L de demanda bioquímica de oxígeno (DBO), evaluan...

jquinof@ulima.edu.pe;fparedes@ulima.edu.pe;esaetton@ulima.edu.pe;reyzagui@ulima.edu.pe

This study proposes a fuzzy control strategy embedded in a Siemens IoT2040 gateway developed for removing inorganic arsenic from synthetic underground water in a treatment plant prototype. The prototype is used to dose a constant flow of Fe(VI) to maintain an oxide-reduction potential to guarantee the oxidation of arsenite into arsenate, while the fuzzy logic embedded in the IoT control manages the addition of Fe(III) to achieve a proper pH adjustment and efficient arsenate removal. The tests used synthetic Bangladesh groundwater enriched with 200 µg/L of arsenite and 200 µg/L of arsenate. The results revealed that the plant prototype yielded an effective treatment of the water. Arsenate was decreased to an average value of 6.66 µg/L and, the arsenite concentration decreased to 1.01 µg/L or less. These values were lower than the limit of 10 µg/L deemed by the World Health Organizati...

hbedon@ulima.edu.pe;ccarhuan@ulima.edu.pe;ygarcia@ulima.edu.pe;esaetton@ulima.edu.pe

The aim of this study is to evaluate the effects of ferrate (VI)-based treatment on surface water collected from the Rímac River as an irrigation water treatment model for bean (Phaseolus vulgaris), lettuce (Lactuca sativa), and radish (Raphanus sativus) plant species irrigated with treated water in the experimental field. The experimental field was divided into eight 625 m2 plots (50 m × 12.5 m) with sandy loam soil (sand 51%, silt 30%, clay 19%). The treatment system operated uninterrupted for three and a half months without deterioration in production, demonstrating that it can function continuously to improve water quality even when the effects on the parameters evaluated here did not reveal significant differences, presumably due to the prevailing effect from metal concentrations already found in the soil. This study also seeks to validate the effect of treatment on the concentrat...

kvargas@inia.gob.pe;reyzagui@ulima.edu.pe;fparedes@ulima.edu.pe; sponce@ulima.edu.pe;jquino@ulima.edu.pe;esaetton@ulima.edu.pe

En este proyecto se ha diseñado y se está construyendo una unidad de tratamiento de agua con iones ferrato (VI), que permite descontaminar el agua que contiene metales pesados, arsénico y microorganismos patógenos. Además, se está implementando un sistema de riego por goteo automatizado, que mantenga el cultivo en capacidad de campo para su mejor desarrollo.

jquinof@ulima.edu.pe;Jsanabri@ulima.edu.pe;fparedes@ulima.edu.pe;sponce@ulima.edu.pe;reyzagui@ulima.edu.pe;esaetton@ulima.edu.pe;hvillaga@ulima.edu.pe;jyacono@ulima.edu.pe