Abstract
A new approach was carried out with the spent mushroom substrate (SMS) of Pleurotus florida on ferrous iron (Fe2+) removal using live, dead and pretreated substrate. In this study, the various dosage levels of SMS namely, 0.25, 0.50, 1.0 and 1.50 g/50 mL were used for the removal of Fe2+ at different time intervals for 90 min. The effect of various temperatures and pH on Fe2+ removal was studied with optimized dosages and time intervals. The biosorption potential of P. florida SMS was checked against the iron-contaminated groundwater collected from in and around Salem, Namakkal and Dharmapuri districts of Tamil Nadu. The biosorption data were obtained and analyzed in terms of their kinetic behavior. Among the SMS of P. florida, the live SMS showed potential Fe2+ removal (100%) from aqueous metal solution in all the tested concentrations. SMS of P. florida showed high potential removal of Fe2+ in neutral pH, at room temperature and explored an efficient sorption ability (100%) in the tested water sample (SW10). The adsorption kinetic values fitted very well with pseudo-second-order when comparing with pseudo-first-order reaction. FTIR, SEM and EDX analysis proved the accumulation of Fe2+ by the SMS. The present study confirmed that the live SMS of P. florida may serve as a potential and eco-friendly biosorbent for removal of Fe2+ from the iron-contaminated water.Graphic abstract
Highlights
Heavy metals are necessary for the growth and metabolism of living organisms at low concentrations, but several of them are poisonous at higher concentrations
The P. florida spent mushroom substrate (SMS) is a potential source for the adsorption of Fe2+ from iron-contaminated water
The biosorption data were analyzed in terms of their kinetic behavior and the adsorption kinetic values fitted very well with pseudosecond-order when comparing with pseudo-first-order reaction
Summary
Heavy metals are necessary for the growth and metabolism of living organisms at low concentrations, but several of them are poisonous at higher concentrations. Recent advances are necessary for treating the heavy metal-contaminated water by efficient and low-cost technology [1]. The above methods described are facing high cost, high sludge production, handling and disposal problems and technical constraints It requires cost-effective and environmentally sound techniques for treatment of wastewaters containing metals. The industry generates huge amount of spent mushroom substrate (SMS) as a waste byproduct. Mushroom substrate can be a simple and cost-effective technology to treat the waste water containing heavy metals [9, 10]. Produced heavy metal ions are considered as a major source of environmental contamination that led to worsening of natural ecosystems and social health [12]. The SMS of P. florida was subjected to adsorption of Fe2+ from the iron-contaminated water collected from different areas of Salem, Namakkal and Dharmapuri districts
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
