Evaluation of the Biostability of Elodea (Egeria densa) and Orange Peel as Bioadsorbent Materials for Pb (II) and Cr (III) in Solution

A variety of plant-based materials can be used in innovative methods to treat water pollution through bio-adsorption. This work evaluated, under lab conditions, the presence native microorganisms orange peel (OP) and elodea (Egeria densa, ELO), aerobic degradation biostability bio-adsorbents, contribution bio-adsorption Pb (II) Cr (III). The microbial characterization OP ELO were conducted using 2 g dried bio-adsorbent a solution metallic ions at 450 mg/L. had larger number bacteria, fungi, yeast than OP. After hours contact with mg/L (III) solution, this value decreased by 80-86% both bio-adsorbents. 25 days, showed adaptation concentrations. According bio-degradation test, stability over 7,01 months, while that was 2,61 CO2 1 439,9 mg after 46 days incubation. tolerated high metal concentration, but they did not contribute significantly ELO. present adsorbents affect materials, as bio-adsorbents provide nutrient-rich substrate. higher bio-stability could pilot tests for treatment metal-polluted water.