The development of the textile and printing industries has led to an increase in colored wastewater containing methylene blue substances that are difficult to degrade by the environment. This study aimed to investigate the effect of catalyst dose, solution pH, and the addition of H₂O₂ on the catalytic activity of Fe-impregnated activated carbon in removing methylene blue. The impregnation of the Fe catalyst on activated carbon made from kepok banana peel overcame the problems. The quality of activated carbon was measured based on its water content of 7.01%, the fixed carbon content of 65.50%, the ash content of 9.90%, and the iodine absorption of 1,243.62 mg/g. Based on the test results on activated carbon, the four parameters were obtained following the Indonesian National Standard. The SEM-EDX tests showed that the morphology of Fe-impregnated activated carbon had an irregular and porous shape with a Fe content of 4.39%. The maximum removal efficiency of methylene blue in the Fenton process (with H₂O₂) with variations in catalyst dose and reaction time of 120 minutes is 61.12% (2 g/L); 90.13% (4 g/L); 95.28 (6 g/L), and 95.40% (8 g/L). The degradation kinetics of the Fenton process with the activated carbon-Fe catalyst corresponds to the first-order reaction kinetics. This study showed that the product catalyst could achieve high removal efficiency and stability. Additionally, the product can support a circular economy strategy for the Indonesian government, increase the value of kepok banana waste, and lessen the amount of garbage released into the environment.

纺织和印刷工业的发展导致含有难以被环境降解的亚甲基蓝物质的有色废水增多。_{本研究旨在研究催化剂剂量、溶液 pH 值和 H 2} O ₂添加量的影响铁浸渍活性炭去除亚甲蓝的催化活性。在木棉香蕉皮制成的活性炭上浸渍铁催化剂克服了这些问题。活性炭的质量根据其含水量为7.01%、固定碳含量为65.50%、灰分含量为9.90%和吸碘量为1,243.62 mg/g来衡量。根据对活性炭的测试结果，这四个参数是根据印度尼西亚国家标准获得的。SEM-EDX测试表明，Fe浸渍活性炭的形态具有不规则和多孔的形状，Fe含量为4.39％。Fenton法对亚甲蓝的最大去除效率（含H ₂ O ₂) 在催化剂剂量和反应时间为 120 分钟的情况下为 61.12% (2 g/L)；90.13%（4 克/升）；95.28（6 克/升）和 95.40%（8 克/升）。使用活性炭-Fe 催化剂的芬顿过程的降解动力学对应于一级反应动力学。本研究表明，产物催化剂可以实现高去除效率和稳定性。此外，该产品还可以支持印度尼西亚政府的循环经济战略，提高 kepok 香蕉废料的价值，并减少排放到环境中的垃圾量。