THE DIFFERENCE OF PERCENTAGE REMOVAL EFFICIENCY OF HEAVY METAL PB (II) IN LEACHATE BY SKELETONEMA SP. IMMOBILIZEDEli Puspitasari, Eko Prasetyo Kuncoro, Tini Surtiningsih, Nur Indradewi Oktavitri and Thin Soedarti
The purpose of this research was to determine the difference of heavy metal Pb (II) removal efficiency percentage in TPA leachate by immobilized Skeletonema sp. based on variations in contact time. In this research, Skeletonema sp. cells were immobilized using sodium alginate; with concentration of 0.65%, and 1- 7 days of contact time variation. Observation data on the removal efficiency percentage of heavy metals were statistically analyzed using the One Way Anova test. Based on the results of the analysis, it is known that there is a difference in heavy metals Pb (II) efficiency removal percentage in landfillsâ leachate based on the determined contact time. The maximum contact time of the heavy metals removal Pb (II) in leachate found to occur at the 7day with efficiency percentage of 89.353%.