Browsing by Author "Herrera Cuero, Luisa Fernanda"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Procesamiento de cerveza: tratamiento de aguas residuales y subproductos(Universidad Santiago de Cali, 2020) Herrera Cuero, Luisa Fernanda; Bernal Suárez, Diana PaolaBrewing brings with it the production of large volumes of wastewater, approximately 10 liters for every liter produced; this wastewater contains a high load of organic matter due to the quantity of organic compounds used in elaboration. The wastewater requires treatments to dispose of it in a safe way for the environment and to take advantage of the generated by-products. Some treatments used to treat wastewater from beer production usually present high costs of both initial investment and operation and maintenance, which hinders their implementation and sustainability, however biological treatments have shown better results compared to other types, which have been implemented in places such as San Carlos de Bariloche in Argentina, China, South Africa, Venezuela and Colombia; mostly with applications of treatment levels up to secondary, an organic load removal greater than 75% is achieved. This review article compiles the different types of treatments applied to the wastewater of breweries, as well as examples of conventional and advanced treatments, with which experiences of different breweries in the world are analyzed with favorable results, representing the need to implement these treatments.Item Removal of E. coli and Salmonella in pot ceramic filters operating at different filtration rates(Elsevier Ltd, 2019-05-14) Pérez Vidal, Andrea; Rivera Sanchez, Sandra Patricia; Florez Elvira, Liliana Janeth; Silva Leal, Jorge Antonio; Diaz Gomez, Jaime; Herrera Cuero, Luisa Fernanda; Lopez Botero, Lina PaolaThe use of pot ceramic filters PCF to improve the domestic water quality supply has been recognized as an alternative in regions where there is unsecure water treatment or contamination of the treated water during transport and storage and an absence of safe drinking water. The aim of this study was to evaluate a model of PCF impregnated with colloidal silver under three filtration rates (1.0, 2.0 and 3.0 L/h) and three E. coli and Salmonella spp concentrations (104, 103 and 102 CFU/mL). The evaluation was made using spiked water having a turbidity of 29.9 ± 4.4 NTU and conductivity of 176 ± 31.7 μS/cm. The results showed a turbidity removal efficiency of 97% and average effluent of 0.9 NTU. The microbiological efficiency removal was of 2 Log Reduction Value (LRV) for E. coli and 1 LRV for Salmonella spp. There were not found significant statistical differences between the filtration rates and the removal efficiencies for turbidity E. coli and Salmonella spp. It was observed that the microbiological removal efficiency was affected by biofilm formation a phenomenon that was attributed to the presence of Salmonella spp. The combination of chemical and mechanical cleaning methods contributed to the elimination of the biofilm.