This paper presents the modeling of sulfate ions removal from an actual sample of a mine drainage in Guanajuato, Mexico using multistage electrocoagulation reactor with aluminum as the sacrificial anode this work important to develop a treatment effective of removal. A hydrodynamic and mass transfer study was carried out using CFD (computational fluid dynamics), proposing the Eulerian model to different input concentrations were used for simulation of this process and comparing with the experimental work. The results of the hydrodynamic simulation study show that electrocoagulation reactor can operate at an inlet flow speed from 0.00925 to 0.037 m/s, and the Reynolds number profile shows that flow has a behavior laminar. The percentage of sulfate removal for the simulation for the initial concentration of 1288 mg L-1, varies from 74.21 to 66.40 % and consumption energy goes from 0.080 to 0.3196 KWhm-3.
Many metallurgical mining processes use water as part of their operation, which represents a problem for water treatment. In this work the validation of the simulation corresponding to the migration of Cr (III) was carried out. The simulation was performed using the ANSYS Fluent 16 CFD software using the Gambit meshing technique and the standard κ-ɛ model in diffusive medium. The results show that the standard κ-ɛ model is adequate to represent this case study.
In the present work, the anthropogenic mercury content in the soil of a benefit Ex Hacienda (Club Nepomuceno) in the city of Guanajuato, Mexico is analyzed. The patio process used in colonial times spill out 25,000 tons of mercury into rivers and into the air. In the first stage, an exploratory sampling was carried out through 9 vertical holes where 5 samples were selected, these were analyzed by atomic absorption spectroscopy. The mercury concentrations of 600 ppm exceed up to 20 times the concentrations allowed according to the NOM-147-SEMARNAP / SSA1-2004 standard. The second stage of the work was the computational fluid dynamics (CFD) simulation of the diffusion of mercury in the field to find the mathematical model of mercury transfer. The digital elevation model was generated. With the mesh, the study was carried out in Fluent, obtaining the mercury concentration profile, Mercury concentrations pose a risk to human health.
In this work, a drained bed reactor (TBR) was analyzed for the hydrotreatment process, using a commercial catalyst CoMo/\(\gamma\)-Al2O3, vegetable oil from Jatropha Curcas L. was used as raw material. The mode of operation of the reactor was considered in countercurrent. The operating conditions that were considered for the CFD simulation were temperature 320–380 ° C, pressure 8 MPag, LHSV 0.8–8.0 h− 1. The reactor model considers a single hydrocracking reaction of triglycerides to renewable fuels. The CFD simulation was carried out in Ansys Fluent 16.0 in transient state and in 3 dimensions, considering the turbulence model \(k- ϵ\) standard, Eulerian multiphase model for 3 phases and the porous medium model, obtaining results very similar to the experimental ones, a good approximation with the experimental results which can be applied to the industrial scale was shown.
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