UPTAKE Pb LIMBAH CAR DARI INDUSTRI KERTAS OLEH ECENG GONDOK (Eichhomia Crassipes)

The aims of this research was to study accumulation rate of Pb+2 in Waterhyacinths (Eichhornia crassipes), so was decreasing rate of Pb+2 in waste water of pulp and paper industry. Six glass vessels were filled the mixture of pulp and paper waste water and fresh water with 40% volume of pulp and paper waste water, and were filled with waterhyacinths which had leaves seven pieces and seven to eight cm wide . Those vessels were arranged in two group. A half were done by aeration and the rest were not.. After 24 hours, all of the samples was taken up and analyzed to determine Pb+2 content by atomic absorption spectrophotometer (AAS). Analyzed also done after 48 hours, 72 hours and 96 hours at the same method.by the time tratment. The decreasing rate of Pb+2 in waste water was greater by aeration than that without aeration