La agricultura convencional, poco técnica y olvidada, y la necesidad de satisfacer la demanda de alimentos, ocasiona que muchas sustancias tóxicas (pesticidas) sean utilizadas en esta actividad de manera indiscriminada y se dispersen hacia los ecosistemas por efectos del viento y las corrientes de agua, ocasionando un grave problema ambiental. La presente investigación trata de buscar una alternativa para la identificación, cuantificación y degradación de pesticidas organofosforados, tomando como modelo al metamidofos, de esta manera brindar una alternativa para la remediación de lechos acuático contaminados con este pesticida. Se validó un método HPLC-DAD para la cuantificación de metamidofos, siendo el método lineal, preciso y exacto para el monitoreo de metamidofos en un proceso ideal de degradación fotocatalítica, los límites de detección y cuantificación fueron 0.74...

La agricultura convencional, poco técnica y olvidada, y la necesidad de satisfacer la demanda de alimentos, ocasiona que muchas sustancias tóxicas (pesticidas) sean utilizadas en esta actividad de manera indiscriminada y se dispersen hacia los ecosistemas por efectos del viento y las corrientes de agua, ocasionando un grave problema ambiental. La presente investigación trata de buscar una alternativa para la identificación, cuantificación y degradación de pesticidas organofosforados, tomando como modelo al metamidofos, de esta manera brindar una alternativa para la remediación de lechos acuático contaminados con este pesticida. Se validó un método HPLC-DAD para la cuantificación de metamidofos, siendo el método lineal, preciso y exacto para el monitoreo de metamidofos en un proceso ideal de degradación fotocatalítica, los límites de detección y cuantificación fueron 0.74...

Conferencia de la 20th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Education, Research and Leadership in Post-pandemic Engineering: Resilient, Inclusive and Sustainable Actions”. hybrid event, Boca Raton, Florida- USA, junio 18 - 22.

Conferencia de la 20th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Education, Research and Leadership in Post-pandemic Engineering: Resilient, Inclusive and Sustainable Actions”. hybrid event, Boca Raton, Florida- USA, junio 18 - 22.

Mashua (Tropaeolum tuberosum) is an Andean tuber rich in phenolic compounds and glucosinolates, known for its consumption that allows the prevention and/or reduction of getting diseases. The present research evaluated the effect of different types of post-harvest management (sunny, bleached, and freeze-dried) on glucosinolate content and its relationship with myrosinase activity. It is also important to note that when plant cells are damaged and glucosinolates meet the plant's myrosinase, which hydrolyzes them and degrades them to other compounds. In the present research, the types of glucosinolates, the content of glucosinolates and the activity of myrosinase of the purple variety of fresh raw mashua and in mashua treated by several types of processing were evaluated, including the previous treatment (sunny and unscrewed), the boiling treatment and the microwave treatment, with whitenin...

This research aimed to remove Cd (II), Cr (VI), Ni (II), Pb (II), and V (V) from aqueous solutions prepared in distilled water using “Chacco” clay from the Peruvian highlands as adsorbent. The adsorption process was carried out in Batch type systems for 120 min using solutions of each metal at a concentration of 5 mg/L in aqueous systems of a single metal or monometallic (MAS) and solutions of the five metals simultaneously or multimetallic (MMAS). For this purpose, the “Chacco” clay was first characterized by SEM-EDS analysis, finding a laminated clay structure with an elemental composition of C, Al, Fe, Na, Mg, Ca, K, As, Cu, Pd, O, and Ta. The results using 10 g/L of “Chacco” clay showed that the best adsorption efficiency in both MAS and MMAS aqueous systems is achieved at pH = 4 achieving in MAS aqueous systems the removal of 64.16 ± 0.98 % of Cd (II), 95.70 ± 0.81 % o...

Adsorption processes with biomaterials are an environmentally friendly technology that allows the removal of pollutants; on the other hand, it is known that different factors can alter the removal of pollutants. For this reason, the kinetics of removal of Disperse Blue 124 (DB-124) dye from water using Fuerte variety avocado seed waste as adsorbent was evaluated in the present research. The studies were carried out in batch adsorption systems. For this purpose, the effect of pH, adsorbent dosage, initial dye concentration and temperature on the removal kinetics were jointly evaluated. It was found that the best conditions of the adsorption process were at an initial DB-124 concentration of 200 mg/L, a dosage of 2 g/L, pH=2 and a temperature of 40 °C, achieving the removal of 87.64 % of the dye. The kinetic study was fit in all cases to a pseudo-second order model, which indicates that t...