The present study evaluated the performance of tannery effluent treatments by coagulation processes. This was done by combining each of the organic coagulants L-1544, L-1541, and L-1700 with aluminium sulphate, respectively, as an inorganic coagulant in different mixing ratios. Subsequently, the response surface method optimized the coagulation conditions: agitation speed, time, and total coagulant concentration. The best results were obtained with the cationic coagulant based on L-1544; likewise, by superposition of contours plots, the conditions that maximize the percentages of simultaneous removal of turbidity and suspended solids were determined, the optimum coagulation values being time 4 minutes, agitation speed 169.7 rpm and total coagulant concentration 1354 ppm, obtaining 100 and 61.9 % removal of turbidity and suspended solids respectively. The R-Squared statistics show that th...

El presente trabajo evaluó la influencia de la iluminancia, el tiempo y el pH en la remoción de Materia Orgánica Biodegradable DBO5 de los efluentes de Remojo generados en la etapa de Ribera de la Curtiembre Junior SAC, utilizando la especie Chlorella vulgaris en fotobioreactores de columnas de Burbuja (BCR) a escala laboratorio; evaluando 3 niveles de Intensidad Luminosa (3150, 5100 y 8100 lux) y 2 niveles de pH (8.9 y 7.2). En una primera fase se estudió la cinética de crecimiento de la microalga chlorella vulgaris mediante conteo celular, determinando el mejor tiempo de cosecha de la microalga de 7 días. Además se determinó que la mejor relación en volumen de Efluente: microalga que muestre adaptabilidad de la microalga y eficiencia en remover DBO5 , es de 1:1 respectivamente. Se demostró que el pH e Intensidad de luz influyen en la remoción de DBO5, concluyendo que el mejo...

The present study evaluates the removal capacity of sugarcane bagasse biochar for nitrate, nitrite, ammonium and phosphate present in sewage; likewise, the optimum dose (mg/ml) of biochar was determined for the synergic elimination of these contaminants within the matrix studied, for which 10 experimental treatments have been developed at biochar dose levels of 0,5; 1,0; 2,0; 3,0 and 4,0 mg/ml and contact times of 2h and 4h, which were performed in triplicate and the elimination percentages were presented through their mean and standard error. In addition to the evaluation of the individual effect of the biochar dose and the contact time, an adjustment of the bivariate effects was made through response superficies method and overlays of contour images, where it was determined that the maximum elimination zone was 95,7 %; 94,6 %; 72,0 % and 57,0 % for NH4 +, PO4 3- , NO2 - y NO3 -, respec...

Projections of water availability in the near future are increasingly worrisome due to climate change. It is, therefore, high time to seek and develop technologies that would guarantee water availability in the future. In this respect, desalination of seawater is one of the most important alternatives, as specific attention needs to be directed at improving the existing techniques of it. This is why updating information about new achievements for researchers is so important in improving such technologies. This comprehensive review article analyzes advancements in seawater desalination through a bibliometric study encompassing 8523 scientific papers published from 1966 to 2023. The analysis identifies eight key research areas, highlighting significant improvements in energy efficiency and membrane technology. The review examines innovative approaches, including the application of nanopart...