FITOREMEDIASI TIMBAL (Pb) PADA AIR TERCEMAR MENGGUNAKAN TUMBUHAN ECENG GONDOK (Eichhornia crassipes) DAN APU-APU (Pistia stratiotes)

The research aims to identify symptoms and analyze the effectiveness of phytoremediation of water hyacinth and water lettuce in lead-contaminated water. This research was conducted at Moncongloe Lappara Village, Maros District. Testing of water samples at the Laboratory of Soil, Plants, Fertilizer and Water Research Institute for Agricultural Technology, Maros. Plant samples tested at the Laboratory of Feed Chemistry, Hasanuddin University, Makassar, South Sulawesi. The study took place in July - August 2020. The research was an experimental study using a Randomized Block Design (RBD), which consisted of 2 experiments that used two types of aquatic plants: water hyacinth and water lettuce. The two plants were tested in artificial wastewater at concentrations of 0.43 ppm, 2.43 ppm, 4.43 ppm, and 6.43 ppm, followed by an analysis of water and plant samples in the laboratory. The observed parameters, namely plant morphology, heavy metal levels of lead (Pb), and phytoremediation effectiveness values. The results of the research show that aquatic plants, water hyacinths, and water lettuce can remediate water contaminated with lead (Pb). Even though the water hyacinth and water lettuce experienced symptoms of toxicity in the form of chlorosis and necrosis, these two plants were able to survive growth up to 15 days after planting. The phytoremediation ability of water hyacinth plants can reach an effectiveness of 82.27% with a reduction in metals in water that can reach 5.29 ppm. The phytoremediation ability of water lettuce plants can reach an effectiveness of 42.61% with a reduction in metals in water that can reach 2.74 ppm.