Biosorption of lead by a soil isolate Aspergillus neoalliaceus

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ARACAGÖK Y. D.

ARCHIVES OF MICROBIOLOGY, vol.204, no.9, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 204 Issue: 9
  • Publication Date: 2022
  • Doi Number: 10.1007/s00203-022-03164-6
  • Journal Name: ARCHIVES OF MICROBIOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, CAB Abstracts, Chemical Abstracts Core, EMBASE, Environment Index, Food Science & Technology Abstracts, MEDLINE, Veterinary Science Database
  • Keywords: Biosorption, Aspergillus neoalliaceus, Lead, Isotherms, Kinetics, AQUEOUS-SOLUTION, HEAVY-METALS, BIOMASS, ADSORPTION, KINETICS, IONS, EQUILIBRIUM, CADMIUM(II), COPPER(II), REMOVAL
  • Hacettepe University Affiliated: Yes

Abstract

This study focused on Pb (II) elimination from aqueous solutions using fungal soil isolate which is identified as Aspergillus neoalliaceus. The sorption of lead with fungal mass studies was performed as a function of pH, biomass dose, contact time, and initial dye concentration. The solution pH value strongly affected the sorption of lead fungal mass. To examine the effect of hydrogen ions on biosorption in solutions containing lead, solutions with different pH values were used and pH 5 was found to be the most suitable pH value for lead removal. Lead biosorption remained very low below pH 4 because of the competing effect of hydrogen ions in the solution. It has been observed that the removal of lead ions based on biosorption with Aspergillus neoalliaceus is better explained by Langmuir isotherm and pseudo-second-order kinetic models compared to other used models. The biosorption of Pb (II) was determined as a spontaneous and endothermic process.