Chemical and Physical Characteristics of Mahoning River Sediment Before and After Fungal Bioremediation

TL;DRAbstract

The Chemical and Physical properties of Mahoning River sediments were investigated in this study.Experiments were conducted to determine how fungal remediation affected availability of toxic metals in contaminated Mahoning River sediment.Samples were analyzed before and after bioremediation.Sediments were treated with sawdust and sawdust plus Pleurotus ostreatus.The total concentrations of arsenic (As), barium (Ba), cadmium (Cd), chromium (Cr), mercury (Hg), lead (Pb), selenium (Se) and silver (Ag) were determined by microwave assisted total acid digestion.Availability of toxic metals was assessed by toxicity characteristic leaching procedure (TCLP).Metals were analyzed by Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES).The concentrations of most metals were above ecological screening levels as confirmed by total metals study.Most of the TCLP metals detected were below the USEPA regulatory limit.Sediment treated with fungi showed a 15 -40 % reduction in soil concentra

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