Page 472 - Demo

476 PROCEEDINGS OF INTERNATIONAL SCIENTIFIC CONFERENCE ON APPLIED BIOTECHNOLOGYTable 1. Operating parameters for SBR with biomass immobilized on gel beadsStageQ (L/day)DO (mg/L)NH4 + -N (input mg/L)Alkalinity (mg CaCO3 /L)C/N COD PO4 3-Operating mode1 5 0.5 %u2013 210 72 3 30 1.67 Alternate aeration and aeration off every 2 hours20 143 3 60 2.3440 286 3 120 3.682 10 0.5 %u2013 260 430 3 180 5.02 Alternate aeration and aeration off every 2 hours120 858 3 360 11.04200 1430 3 600 18.43. RESULTS3.1. Nutrient Transport in Hydrogels3.1.1. Effect of GO concentration on methylene blue adsorption capacityGraphene oxide (GO) significantly impacts the structural characteristics of hydrogel materials. Specifically, an increase in the GO content within the hydrogel matrix results in the formation of smaller pore sizes accompanied by higher porosity. These structural modifications, in turn, influence the material%u2019s methylene blue (MB) adsorption capacity. The effect of varying GO concentrations under controlled conditions (25%u00b0C, pH = 7.5) is illustrated in Figure 2.