Bioflocculant from Leuconostoc Pseudomesenteroides for the Treatment of Waters from the Moche River

De La Cruz-Noriega M.; Cabanillas-Chirinos L.A.; Salvatierra-Espinola W.; Mendoza-Villanueva K. · World Congress on Civil, Structural, and Environmental Engineering (2025) · DOI: 10.11159/iceptp25.159

Resumen

The exponential increase in the contamination of our water resources is alarming. Water is essential for human life, so it is necessary to recover it through ecological treatments, such as bioflocculants. In this context, the present study aimed to evaluate the bioflocculant activity of dextran from Leuconostoc pseudomensenteroides in treating water from the Moche River.For this purpose, sugarcane juice was used and sown on potato sucrose agar (PSA) in a selective medium, where characteristic colonies of the genus Leuconostoc sp. were observed, with a shiny, rubbery appearance. Molecular identification confirmed 100% that it was the Leucnostoc pseudomensenteroides strain. The flocculating activity of dextran was evaluated using doses of 5, 20, and 40 ppm. During the process, a fast speed of 180 rpm and slow speeds of 50 to 70 rpm were applied. In addition, we observed that the maximum flocculation activity was obtained at a pH of 9 and a concentration of 40 ppm of dextran, with a fast-stirring speed of 180 rpm for 5 min and a slow stirring speed of 70 rpm for 15 min. This procedure achieved an 88.0% removal of the turbidity in the waters of the Moche River.

Instituciones: Universidad César Vallejo