Abstract
The work demonstrates the performance of polyamide membrane in the removal of
manganese ions from single salt aqueous solution simulating real acid mine drainage. The
membrane was tested using a dead-end filtration cell with manganese sulphate was used to
prepare a feed solution. The membrane flux and metal rejection was evaluated. Effect of
operating parameters such as pH, initial feed concentration and pressure on membrane
performance was investigated. The pressure was varied between 10 and 15 bar and it was
observed that increasing the pressure increases the membrane flux. Acidic pH conditions
contributed to the removal of the contaminate as Mn2+ ions are freely at low pH. The
percentage rejection was found to be 63.5 to 77.6 % as concentration is increased from 290
ppm to 321 ppm for a feed solution. The membrane showed satisfactory results in removing
metal ions from solution.