Lead and nickel biosorption with a fungal biomass isolated from metal mine drainage: Box–Behnken experimental design

Abstract

The Pb(II) and Ni(II) biosorption of a fungal biomass isolated from mine drainage of metal-processing industries in Balya (Balıkesir province, Turkey) was optimized using a response surface methodology by altering parameters such as pH, initial metal concentration, contact time and biosorbent dosage. This strain was shown to be highly similar to Penicillium sp. Furthermore, zeta potential measurements and Fourier transform infrared spectroscopy were performed to understand the adsorption mechanism. A Box-Behnken design with 29 experiments was used to evaluate the interactions between independent variables. The results showed that the fungal biomass isolated from the metal mine drainage could have a significant environmental impact through the biosorption of Pb(II) and Ni(II) in waters polluted with heavy metals, particularly in the drainage from metal mines. The maximum removal values were 76 and 47 % at pH 4.5 for both Pb(II) and Ni(II), with 123 and 33 mg/L initial metal concentrations, 65 and 89 min contact times and 0.2 and 1.6 g/L biosorbent, respectively.

The Lead [Pb(II)] tolerance and uptake ability of four fungal species, two from the genus Penicillium and two from the genus Talaromyces were investigated in this study. The species were isolated from a polluted tributary and identified to be closest to P. canescens, P. simplicissimum, T. macrosporus and another Talaromyces sp. via PCR targeting their internal transcribed spacer 1 and 4 sequences. All isolates have tolerances for up to 2000 µg/mL and 3000 µg/mL Pb(II) on solid and liquid medium, respective

“…These cell walls act as the first barrier to the incoming HM, serving to reduce its concentration (Hafez et al, 1997). Support of these results can be found in several studies where Pb(II) biosorption has been described as a major component of increased fungal tolerance mechanisms in P. chrysogenum, P. citrinum (Oso et al, 2015), P. janthinellum (Aytar, 2014;Iskandar et al, 2011), P. oxalicum (Svecova et al, 2006), P. purpurogenum (Say et al, 2003a) and P. smplicissimum (Iskandar et al, 2011). Specifically, dried P. simplcissimum has been tested as a biosorbent and has shown to adsorb 76.9 mg/g of Pb(II), with higher sorption rates at higher initial metal inoculation concentrations (Fan et al, 2008).…”

Identify biosorption effects of Thiobacillus towards perfluorooctanoic acid (PFOA): Pilot study from field to laboratory

“…The properties of certain types of microbial biomass make it possible to detoxify pollutants from industrial effluents and other aqueous solutions with low cost, easy availability and moderate operating conditions (Aksu, 2005;Dobson and Burgess, 2007;Fomina and Gadd, 2014). A variety of studies have focused on some microorganisms including bacteria (Aksu, 2005;Kwak et al, 2013), fungi (Mezaguer et al, 2013;Aytar et al, 2014) and yeast (Soares and Soares, 2012;Imandi et al, 2014), which are capable of absorbing pollutants from wastewater. However, the literature survey indicated that the studies relating to biosorption are very limited and only the purification of selected pollutants have been studied such as metals (Aytar et al, 2014;Hlihor et al, 2015) and dyes (Deniz and Ersanli, 2016;Deniz and Kepekci, 2016).…”

“…A variety of studies have focused on some microorganisms including bacteria (Aksu, 2005;Kwak et al, 2013), fungi (Mezaguer et al, 2013;Aytar et al, 2014) and yeast (Soares and Soares, 2012;Imandi et al, 2014), which are capable of absorbing pollutants from wastewater. However, the literature survey indicated that the studies relating to biosorption are very limited and only the purification of selected pollutants have been studied such as metals (Aytar et al, 2014;Hlihor et al, 2015) and dyes (Deniz and Ersanli, 2016;Deniz and Kepekci, 2016). There is a need to study other pollutants, especially PFOA which are not easily biodegradable, and to identify the specific species which can provide abundant biomass with simple growth conditions, inexpensive media and high biosorption capacity.…”

Accumulation of Co(II) and Eu(III) by the mycelia of Aspergillus niger isolated from radionuclide-contaminated soils

“…Among them, fungi are suitable bioremediation agents with favorable prospects for the enrichment of radionuclides from liquid wastes [19]. Generally, the surface of fungal mycelia is negatively charged in ambient pH [22], and the cationic radionuclides can be adsorbed on these fungi easily [23][24][25].…”