TY - JOUR AU - Mukaromah, Ana Hidayati AU - Wardoyo, Fandhi Adi AU - Sulistyaningtyas, Ayu Rahmawati AU - Ghazi, Haikal Naufal PY - 2023/03/24 Y2 - 2024/03/29 TI - Decreasing of Mangan (II) in The Water Using Membrane of Moringa Seed Powder-TiO2 with Variation of Mass TiO2 JF - Jurnal Riset Kimia JA - J.Ris.Kim. VL - 14 IS - 1 SE - Articles DO - 10.25077/jrk.v14i1.512 UR - http://jrk.fmipa.unand.ac.id/index.php/jrk/article/view/512 SP - 1-11 AB - <p>Mn (II) is a metal ion commonly used in steel alloys, pigment industries, welding, fertilizers, pesticides, ceramics, and electronics. According to the Regulation of the Minister of Health No. 32 of 2017, the permissible content of Manganese in dug well water is 0.5 mg/L. The purpose of this study was to determine the concentration of Mn (II) ions in water before and after passing through a Moringa Seeds Powder (MSP)-TiO<sub>2</sub> membrane 20:1; 20:3; 20:5; 20:7; 20:9 and measure the percentage decrease in the concentration of Mn (II) ions in water after through the MSP-TiO<sub>2</sub> membrane. The object of this research is a 55 ppm Mn (II) ion artificial sample at a flow rate of 0.56 mL/minute for 90 minutes with 90-watt radiation UV. The concentration of Mn (II) ion was measured by visible spectrophotometric method, the morphology of MSP, TiO<sub>2</sub>, and MSP-TiO<sub>2 </sub>membranes was characterized by SEM-EDX, and its diffraction spectra by X-Ray diffraction. The results obtained that the initial Mn(II) was 55.06 ± 0.031 ppm, the concentration of Mn (II) ions with the MSP-TiO<sub>2</sub> membrane of mass MSP-TiO<sub>2</sub> were 20:1; 20:3; 20:5; 20:7; 20:9 respectively 36.47±0.00; 44.16±1.15; 44.31±1.04; 44.94±0.94; 42.27±2.61 ppm. The percentage of decrease concentration of Mn (II) ion are 34.19±0.44%; 21.37±0.43%; 20.94±0.85%; 19.24±0.86%; and 19.66±0.86%. The highest percentage decrease in Mn (II) ion concentration was 34.15±0.44% in the variation of mass MSP-TiO<sub>2</sub> 20:1. This study concludes that the MSP-TiO<sub>2</sub> membrane has the potential to reduce the concentration of Mn (II) ions in water.</p> ER -