Mycoremediation Potential of Edible Mushroom (Lentinus squarrosulus Mont) for Reduction of Physicochemical Properties and Microbial Load of Landfill Leachate obtained from Choba Dumpsite, Rivers State, Nigeria

Abstract

Dumpsite leachate samples are characterized by high concentration of pollutants that pose several environmental health risks in both short and long term. This study was therefore undertaken to investigate the efficacy of mycoremediation capacity of edible mushroom (Lentinus squarrosulus Mont.) for reduction of physicochemical properties and microbial load of landfill leachate obtained from Choba dumpsite, Rivers State, Nigeria using mycofiltration technique and standard methods. Data obtained after a 24-48 hours mycofiltration treatment, revealed a significant (p<0.05) reduction in the concentration of pH from 7.4 to 7.7, Colour 227 to 108, Turbidity 152 to 50 (NTU), Electrical conductivity 415 to 201(µS/cm), Total Dissolved Solid 560 to 218 (mg L-1), Total Suspended Solid 22 to 20 (mg L-1), Nitrite 0.124 to 0.120, Nitrate 0.130 to 0.125, Phosphate 1.4 to 1.1, Dissolved Oxygen 8.64to 1.52 (mg/L-1), Biological Oxygen Demand 7.2 to 1.52 (mg/L-1), Chemical Oxygen Demand 4.96 to 1.32 (mg/L-1) and microbes at the end of the filtration process. The findings from this study showed that mycofiltration technique could be a useful, efficient and affordable technology for toxicity reduction in dumpsite leachate.

Mycofiltration of urban derived raw stormwater using Lentinus squarrosulus

“…have been documented to grow naturally on special substrates and can be cultured on pasteurized substrates (De Leon et al, 2017). The efficacy of filtration of different water samples such as fish pond effluent and raw drinking water using L. squarrosulus based mycofilter has been reported by several authors (Ikechi-Nwogu et al, 2020;Ikechi-Nwogu et al, 2022). Normally, a mycofilter is known to comprise of a burlap sack stacked with substrate which include; straw or woodchips and saprophytic mycelium (Mnkandla and Otomo, 2021).…”