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Acid mine drainage (AMD) is one of the by-product from coal and mineral mining. AMD can terminally impair waterways and contaminate the water quality due to its acid characteristic and its high concentration of trace metal ions including iron, manganese, zinc, and copper. The aim of this research is to investigate the effect of competing cation in acid mine drainage on zinc adsorption using synthesized zeolite from coal fly ash. The adsorption study was conducted using batch method in synthetic AMD, which contain zinc as the primer ion and iron, manganese, copper as competing ions. The desorption study was also carried out in this study, using eluents such as, H2SO4, HNO3, and NaCl. The removal efficiency of zinc was reduced significantly with the present of other metal ions. The desorption study shown that the acidic eluents tend to destruct the synthesized zeolite, while the desorption efficiency in eluent such as NaCl was not significant either. Further research is needed to investigate more about the eluent that fit the adsorbent, the desorption time, or consider other method for the regeneration of the adsorbent.