This study evaluates the performance of the biopolymer M22 in treating the liquid effluent from an industrial leaf fertilizer process. The biopolymer was tested at dosages ranging from 1 to 15 mL, with each test involving 100 mL of raw effluent, stirred for 30 seconds, settled for 30 minutes, and filtered with quantitative filter paper. The tests were analyzed using optical emission spectrometry, and the results were statistically analyzed using ANOVA with a significance level of 5%. The nutrients analyzed included boron, cobalt, copper, sulfur, iron, phosphorus, magnesium, manganese, molybdenum, nickel, potassium, and zinc. The best removal results were observed for iron, magnesium, and manganese, with removal indices of 99.91%, 100%, and 99.58%, respectively. For the disposal of effluents in water bodies, it is necessary to meet the standards established by CONAMA Resolution No. 430. The study concludes that while the biopolymer M22 effectively reduces nutrient concentrations, further treatment is required to meet all CONAMA standards.This study evaluates the performance of the biopolymer M22 in treating the liquid effluent from an industrial leaf fertilizer process. The biopolymer was tested at dosages ranging from 1 to 15 mL, with each test involving 100 mL of raw effluent, stirred for 30 seconds, settled for 30 minutes, and filtered with quantitative filter paper. The tests were analyzed using optical emission spectrometry, and the results were statistically analyzed using ANOVA with a significance level of 5%. The nutrients analyzed included boron, cobalt, copper, sulfur, iron, phosphorus, magnesium, manganese, molybdenum, nickel, potassium, and zinc. The best removal results were observed for iron, magnesium, and manganese, with removal indices of 99.91%, 100%, and 99.58%, respectively. For the disposal of effluents in water bodies, it is necessary to meet the standards established by CONAMA Resolution No. 430. The study concludes that while the biopolymer M22 effectively reduces nutrient concentrations, further treatment is required to meet all CONAMA standards.