Unveiling the Potential of Aspergillus Terreus SJP02 for Zinc Remediation and Its Driving Mechanism

Overview

Journal Sci Rep

Date 2025 Jan 27

PMID 39870778

Authors

Shobham

Vishalakshi Bhanot

Mamta

Sanjay Kumar Verma

Suresh Gupta

Jitendra Panwar

Affiliations

Soon will be listed here.

Abstract

In present study, 15 morphologically different fungi isolated from rhizopheric soils of an industrial area were screened for their Zn removal efficiency from aqueous solution. Isolate depicting highest potential was molecularly identified as Aspergillus terreus SJP02. Effect of various process parameters viz. biosorbent dose, contact time, temperature, agitation rate, pH and initial Zn concentration on the fungal sorption capacity were studied. The biosorbent exhibited maximum Zn sorption capacity of 10.7 ± 0.2 mg g in 60 min. Desorption studies showed 71.46% Zn recovery rate in 120 min with 0.01 N HNO, indicating efficient metal recovery for reuse and subsequent reutilization of spent mycosorbents. Acid digestion study suggested adsorption being the primary mechanism accounting for 87% Znremoval. It was further confirmed by the FE-SEM and EDX analysis. FTIR analysis suggested involvement of amino, hydroxyl, carbonyl, and phosphate functional groups of fungal cell wall in adsorption. The experimental results were in accordance with the tested isotherm and kinetic models, and suggested the role of physical adsorption for Zn removal. Noteworthy, the present study showed better sorption capacity in considerably shorter equilibration time compared to previous reports and advocate potential utilization of A. terreus SJP02 for bioremediation of Zn contaminated wastewater at industrial scale.

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