The Use of Moringa Seed Powder (Moringa Oleifera) as Biocoagulant and Flocculant in the Treatment of Wastewater Generated by Coal Mining Industry
Mineralogically speaking, acid mine drainage consists of minerals such as silica, iron silicate, magnesium, sodium, potassium and sulphide. Furthermore, these minerals can undergo oxidation (especially pyrite oxidation) to form acidic salts with a pH of 2.8-3.4. The activity test of moringa seed powder involves an addition of 30% H2O2 to coal wastewater treatment; Two liters of coal waste water is added with moringa seed powder with a stirring time of 50 minutes, 100 minutes, 150 minutes, 200 minutes and 250 minutes. The results of the observations are analyzed by using AAS (Atomic Absorption Spectrophotometry) to measure the quality of the degraded residual wastewater and X-Ray Diffraxion (XRD). The result of the study shows that the pH value reaches 7.6 with the addition of H2O2 at 250 minutes of stirring time; The level of TSS reaches the value of 0 at 250 minutes of stirring time without moringa seed powder; Whereas with an addition of H2O2 and moringa seed powder, a decrease of heavy metal by an average of 69.06% occurs at 100 minutes of stirring time.
Keywords- Acid Mine Drainage, Moringa Seeds, Wastewater Treatment