PHYTOREMEDIATION OF HEAVY METAL CONTAMINATED SOIL FROM NICKEL INDUSTRY WASTE WITH KETUL PLANT (BIDENS PILOSA L.)

• Main Author: M. Ilyas, Dzulfiannur
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/84634
• Institution: Institut Teknologi Bandung

Ketul plant (Bidens Pilosa L.) is a hyperaccumulator plant, which has stronger resistance, faster growth rate, higher biomass and wide distribution compared to other hyperaccumulators. The addition of Ethylenediaminetetraacetic Acid (EDTA) is used as a chelator that increases the solubility of metals in water, making it easier for plants to absorb heavy metals. The addition of EDTA and various concentrations were studied to see the results of the effect of nickel heavy metal absorption on plants. Ni heavy metal levels in soil media and plants were measured using AAS. The treatment of soil media with concentrations of 10, 20, 40, and 50 mg/kg and the combination of EDTA addition. The results of the analysis showed that the effect of the treatment differed significantly (P < 0.001) on the reduction of nickel levels in soil media. The decrease in nickel metal levels was best in the treatment of 10 mg/kg EDTA addition with a removal presentation of 53.85% or 4.61 mg/kg. While the smallest decrease in soil nickel metal levels was in the 50 mg/kg treatment without the addition of chelators with a removal percentage of 13.14% or 47.03 mg/kg compared to the addition of EDTA. With a planting duration of 42 days, the values of TF, BCF and BAC are less than 1 (<1), which indicates that the plants have not been able to absorb heavy metals or plants cannot be said to be nickel hyperaccumulator plants.