Absorption Reduction Capacity with Chromium (Cr) and Cadmium (Cd) Contaminants of Vetiver Phytoremediation Process on Compost Soil

This study aims to analyze the large of reduction capacity of chromium metals and cadmium in the soil compost\ud media and absorption capacity of chrome and cadmium in phytoremediation process of vetiver; to compare the\ud reduction-absorption capacities of chromium and cadmium metals in phytoremediation process of vetiver\ud (Vetivera zizanioides). The study was carried out for 2 months with a range of sampling every 7 days, and then\ud analyzed by using Atomic Absorption Spectrophotometer (AAS). Contaminants used as artificial contaminants\ud containing heavy metals chromium (Cr) and cadmium (Cd). This study is an experimental research includes two\ud variables. First, the variations of Cr concentrations used were 400 ppm, 600 ppm and 800 ppm and Cd\ud concentrations used were 40 ppm, 60 ppm, 800 ppm. Secondly, the variations of total plant are 3, 6, and 9 plant.\ud The period of observation is made every week. Planting media used is compost soil with compost and clay\ud composition of 20%, 30% and 40%. The results of study showed that there are a significant relationship between\ud the reduction capacity of Cr and Cd of compost soil and the absorption capacity of Cr and Cd for vetiver\ud (Vetiveria zizanioides). The higher of Cr and Cd decreases in soil followed by increased levels of Cr and Cd in\ud vetiver (Vetiveria zizanioides). The capacity of Cr reduction varies between 57% - 86% and Cd 36% - 64%\ud where as the absorption capacity of vetiver on Cr between 38% - 75% and Cd between 34%-74%. The capacity\ud of reduction-absorption of Cr is relatively higher than Cd in phytoremediation process of vetiver