Article 2025 · 2 atıf

Sustainable Nickel Extraction from Low-Grade Ores via <i>Trametes versicolor</i>: A Bioleaching Case Study on Olivine and Serpentine

Acar, Ilker, Gulmez, Ozlem, Baris, Oezlem, Basman, Gokhan

Özet

Nickel's versatile properties and growing demand, particularly in stainless steel and electric vehicle industries, highlight the need for environmentally sustainable recovery methods amid depleting high-grade reserves. This study explores the bioleaching potential of Trametes versicolor OG2 for nickel extraction from chromite tailings, olivine, and serpentine under varying pH (4.5-6.3) and retention times (3 and 7 days). Optimal recovery from olivine (41.82%) and serpentine (30.97%) was achieved at pH 5 after 7 days, underscoring the influence of extended processing. The fungus demonstrated high tolerance to heavy metals, including nickel and chromium. Organic acids, particularly oxalic and citric acids, produced by the fungus, were identified as key leaching agents, enhancing the extraction of nickel and iron. However, high chromite levels in serpentine reduced metal dissolution due to toxic hexavalent chromium. These findings position T. versicolor as a sustainable and effective agent for nickel recovery, offering a promising pathway toward environmentally friendly mining and heavy metal remediation.

Anahtar Kelimeler

Nickel recovery Bioleaching <italic>Trametes versicolor</italic> Low-grade ores Eco-friendly extraction LIMONITIC LATERITE WASTE SERPENTINE FUNGAL COBALT RECOVERY METALS ACID

WoS Kategorileri

Green & Sustainable Science & Technology Metallurgy & Metallurgical Engineering

Künye

Dergi: JOURNAL OF SUSTAINABLE METALLURGY
Yıl: 2025
Cilt: 11
Sayı: 3
Sayfa: 2527-2540
ISSN: 2199-3823
eISSN: 2199-3831
DOI: 10.1007/s40831-025-01123-1
WoS UID: WOS:001502001000001

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