The main influencing factors for the flocculation of organic/inorganic substances in sewage water are temperature, pH, alkalinity, amount of substances, and stirring conditions. In particular, pH is important for the removal of organic/inorganic substances in wastewater (Ismail et al., 2012). Fig. 2 depicts the change of pH in brewery wastewater with various Mg-sericite doses (0 to 50 mg/L) and different mixing times (0 to 200 min). These results demonstrate that a fast initial increase of pH occurred for brewery wastewater in the presence of Mg-sericite and that the pH rose to 7.5 ± 0.2 from 6.5 ± 0.4 within just 30 min of contact with 20 mg/L of Mg-sericite. The pH increased to 7.4 ± 0.2 and 7.5 ± 0.2 with 10 and 20 mg/L Mg-sericite, respectively. Up to 10 mg/L of Mg-sericite did not significantly change the pH value, and the highest pH value obtained was 7.7–7.8 for 20 mg/L Mg-sericite. To change of pH in the brewery wastewater using Mg-sericite, a 30-minute mixing time and a 10 mg/L dose is recommended.