Pengaruh Kepadatan Lemna Minor L. dalam Proses Penyerapan Total Cr dan Cd2+ dari Limbah Industri Tekstil

Abstract

The objectives of this study are: Firstly to determine the absorption effectiveness of Cr Total and Cd from waste water by various duckweed population densities. Secondly, to determine the optimum of duckweed population densities in the absorption of Cr total and Cd from textile waste water. The study was carried out in 6 days and the observation had been carried out every 2 days. Data were analyzed by Randomized Complete Block Design (RCBD), 6 treatments and 4 replications. As the treatments are various duckweed (L. minor) population densities which are 0% (control); 12,5%; 25%; 37,5%; 50%; and 62,5%, respectively. To test the differences between the treatment means, the Honestly Significant Differences (HSD) at 5% level of significant were used. The results of this study show that 37,5% of Lemna minor densities are the most effective population density in the absorption of Cr total up to 50% (57,14% - 58,82%). On contrary, there is no absorption of Cd within 6 days in any population.