STUDI FITOREMEDIASI LOGAM TIMBAL (Pb) DAN KADMIUM (Cd) OLEH TANAMAN KAYAMBANG (Salvinia molesta); STUDY OF PHYTOREMEDIATION LEAD (Pb) AND CADMIUM (Cd) BY KAYAMBANG PLANTS (Salvinia molesta)

JACSON VICTOR MORIN, Eko Sugiharto

2011 | Disertasi | PROGRAM STUDI S2 ILMU KIMIA

Study phytoremediation of lead (Pb) and cadmium (Cd) by kayambang plants (Salvinia molesta) has been studied. This study assessed the ability of plants to absorb Pb and Cd which is influenced by the addition of various metal and NPK fertilizer on the medium containing the test solution. Samples of plants were interacted with NPK fertilizer, Pb and Cd. The variations of NPK 1 mg/L, I,5 mg/L, 2,5 mg/L and 10 mg/L and the variations of Pb (100 mg/L, 400 mg/Land 800 mg/L) and cadmium (50 mg/L, 100 mg/L and 200 mg/L). Optimum pH for growing the Kayambang plants (Salvinia molesta) is a range pH of 6-7. Observations were made every 7 days until the day of 35th, by measuring levels of Cd and Pb after the interaction of plants (roots, non-roots and growing media). Experiment data were obtained from the measurement of metal content using AAS instrument. Determination of Pb and Cd and Transfer Factor (FT) in roots and non-roots were obtained from the conversion process of destruction. Plant wet weight measurements and observations of the condition of plant morphology (leaf color and root condition) is also done in this study. The results showed that the Pb and Cd accumulation are higher at the root compared to non-root (stem and leaf). Effect of NPK fertilizer is very evident in the heavy plant where increasing levels of NPK fertilizer plant, the more heavy weight. The average value of FT in kayambang plants (Salvinia molesta)> 1, then the plant can be used as a phytoremediator agent. The highest value FT of Pb is 11.22 and shown on condition [NPK] 10 mg/L, [Pb] 100 mg/L at day of 21th and for highest value FT of Cd is 9.57 and shown on condition [NPK] 10 mg/L, [Cd] 100 mg/L and day of 35th.

Kata Kunci : LOGAM TIMBAL (Pb) DAN KADMIUM (Cd)