Removal of Manganese and Copper from Aqueous Solution by Yeast Papiliotrema huenov

Abstract

Papiliotrema huenov was previously reported to be highly tolerant of a range of extremely toxic heavy metals. This study aimed to identify the potential of P. huenov to remove manganese and copper from aqueous solution. Physical conditions which affect removal of Mn(II) and Cu(II) were determined. Optimal temperature for adsorption of both metal ions was 30 C, and optimal pH for maximum uptake of Mn(II) and Cu(II) were 5 and 6, respectively. Under these conditions, living cells of P. huenov accumulated up to 75.58% of 110 mg/ L Mn(II) and 70.5% of 128 mg/L Cu(II) over 120 h, whereas, the removal efficiency of metal ions by dead cells over 1 h was 60.3% and 56.5%, respectively. These results indicate that living cells are more effective than dead biomass for bioremediation, but that greater time is required. The experimental data extends the potential use of P. huenov in biosorption and bioaccumulation of toxic heavy metals to copper and manganese, two of the most common industrial contaminants.

Copper Tolerance of Novel Rhodotorula sp. Yeast Isolated from Gold Mining Ore in Gia Lai, Vietnam

“…nov. is endothermic, an increase in temperature led to expedited ion diffusion. This finding broadly supports the work of other studies about the effect of temperature on biosorption [ 16 , 38 , 39 ].…”

“…(2021) who also found that 6 is the optimal pH for biosorption of Cu 2+ by yeast Pichia pastoris [ 31 ]. Meanwhile, pH 5 was determined as the optimal pH value for Cu 2+ adsorption by Saccharomyces cerevisiae [ 32 ], by Papiliotrema huenov [ 16 ]. pH in the range of 3.5–4 was the most favorable for dried yeast S. cerevisiae in adsorption of Cu 2+ [ 33 ], a higher pH (7) was optimum for copper ion adsorption by Spirulina platensis [ 34 ].…”

“…The effects of initial pH (2, 3, 4, 5, 6, 7) and temperature (20, 30, 40, 50 °C) on the Cu 2+ removal efficiency were investigated according to a previous study [ 16 ]. In brief, yeast isolate was cultured in a YM medium for 3 days at 30 °C, the cells were then collected by centrifugation and washed thoroughly with deionized water before being dried at 80 °C for 48 h. Dried biomass was subsequently ground and used as adsorbents.…”

Screening and performance optimization of fungi for heavy metal adsorption in electrolytes

“…Various studies have consistently observed that the optimal conditions for fungal adsorption of heavy metals, such as Co (II) ( El-Bondkly and El-Gendy, 2022 ), Ni (II) ( Sharma et al, 2021 ), and Cr (II) ( Boujelben et al, 2022 ), commonly involve a pH around 5.0. Additionally, the temperature range of 25–30°C to be favorable for the maximum uptake of these heavy metals by different fungal strains ( Bourzama et al, 2020 ; Nguyen Van et al, 2021 ; Kerga et al, 2023 ). These conclusions are consistent with the findings of the present study, indicating that these conditions could be considered optimal for the fungal adsorption of heavy metals.…”

Yeast—As Bioremediator of Silver-Containing Synthetic Effluents

“…Biosorption is based on physico-chemical interactions between the metal ion and the functional groups present on the cell surface [ 10 ]. Many studies in the literature suggest the use of algae, bacteria, filamentous fungi, and yeast as biosorbents for metal ion removal from wastewater and batch systems [ 16 , 18 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”