Effective bioremoval of reactive dye and heavy metals by Aspergillus versicolor

• Published in: Bioresource technology Vol. 101; no. 3; pp. 870 - 876
• Main Authors: TASTAN, Burcu Ertit, ERTUGRUL, Sevgi, DÖNMEZ, Gönül
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01-02-2010; [New York, NY]: Elsevier Ltd; Elsevier
• Subjects: Adsorption; Applied sciences; Aspergillus - metabolism; Aspergillus versicolor; batch fermentation; Bioaccumulation; Biodegradation, Environmental; Biological and medical sciences; bioremediation; Biotechnology; chromium; Chromium - chemistry; Color removal; Coloring Agents - chemistry; copper; Copper - chemistry; decolorization; Dyes; Effluents; Environment and pollution; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Fungus; Heavy metal; Heavy metals; Hydrogen-Ion Concentration; Industrial applications and implications. Economical aspects; industrial effluents; Industrial Waste; Ions; metal ions; Metals, Heavy - chemistry; nickel; Nickel - chemistry; pH effects; Pollutants; Pollution; Reactive dye; reactive dyes; textile mill effluents; Textiles; Waste Disposal, Fluid - methods; Waste water; Wastewater; Wastewater treatment; Wastewaters; Water Microbiology; Water Pollutants, Chemical - isolation & purification; Water Purification - methods; Water treatment and pollution; Fungus; Bioaccumulation; Wastewater treatment; Reactive dye; Heavy metal; Fungi; Aspergillus versicolor; Fungi Imperfecti; Bioremediation; Biological accumulation; Waste water purification
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2009.08.099

In this study, bioaccumulation of heavy metal and dye by
Aspergillus versicolor was investigated. Optimum pH values of the maximum heavy metal bioaccumulation was found as 6 for 50
mg/L Cr(VI), Ni(II) and 5 for Cu(II) ions with the 99.89%, 30.05% and 29.06% removal yield, respectively. The bioremoval of the dye up to 800
mg/L at pH 5 and 6 was investigated and 27.15% and 28.95% removal rates were measured respectively. The presence of Cr(VI) with dye, decreased the uptake yield for both pollutants. In the medium with Cu(II) and dye, dye removal was not affected by Cu(II)
, but Cu(II) removal rate increased from 29.06% to 37.91% by the existence of the dye. When Ni(II) and dye were combined, neither pollutant affected the other’s removal yield. These results indicate that the isolated
A. versicolor strain deserves attention as a promising bioaccumulator of heavy metal ions and reactive dyes in wastewater effluents.