Fast and efficient cadmium biosorption by Chlorella vulgaris K-01 strain: The role of cell walls in metal sequestration

Wang, Li; Liu, Jing; Filipiak, Monika; Mungunkhuyag, Khongorzul; Jedynak, Paweł; Burczyk, J.; Fu, Pengcheng; Malec, Przemysław

doi:10.1016/j.algal.2021.102497

Cited by 18 publications

(8 citation statements)

References 62 publications

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“…After only 5 min of interaction, 16 % (3.72 ± 0.01 µmol.g -1 ; d.w.) of the total initial amount of Zn in the solution was adsorbed by dried biomass. Similar results were obtained by Wang et al (2021) when monitoring the kinetics of Cd biosorption by the Chlorella vulgaris K-01 strain. Also, Pozdniakova et al (2016) found that concentration equilibrium for the kinetics of Zn biosorption by biomass of 4 species of brown seaweeds (Laminaria hyperborea, Pelvetia canaliculata, Ascophyllum nodosum, Fucus spiralis) at pH 6.0 and 25 °C was established at times of 14, 19, 23, and 42 min, respectively.…”

Section: Contact Time and Phsupporting

confidence: 84%

Biosorption of Zn by dried biomass of Euglena gracilis from aqueous solutions

Machalová,

Lempochner,

Marková

et al. 2024

Nova Biotechnol. Chim.

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The aim of this work was to evaluate the possibility to utilize the dried biomass of Euglena gracilis var. bacillaris as a biosorbent applied for the removal of Zn from aqueous solutions. For these purposes, experiments involving solutions spiked by 65ZnCl2 were carried out under the conditions of batch systems. The prepared biosorbent in the form of dried biomass of E. gracilis (< 300 μm) was characterized in terms of the presence of functional groups (COOH, PO3H2, OH, and NH2), the concentration of binding sites cAn and the value of pHzpc = 6.6 using the modelling program ProtoFit. From the kinetics of Zn biosorption, it can be assumed that the Zn removal was a rapid process, in which the concentration equilibrium [Zn]solution : [Zn]biosorbent was stabilized in the first 5 min of interaction. In individual experiments, the effect of solution pH, initial biosorbent or Zn concentration were evaluated. Based on the MINEQL+ speciation modelling program, we predicted the decrease in the abundance of free Zn2+ cations in the presence of different concentrations of EDTA as a complexing agent in the solution. It was found that the Zn biosorption decreased linearly with the decreasing the proportion of Zn2+ in solution. The biosorption data expressed as equilibrium values of the remaining Zn concentration in solution Ceq (µmol.dm-3) and equilibrium values of specific adsorption Qeq (µmol.g-1; d.w.) were well fitted to the Langmuir model of adsorption isotherm in comparison with the Freundlich model. The maximum adsorption capacity of the dried biomass of E. gracilis for the biosorption of Zn reached the value Qmax = 0.53 ± 0.05 mmol.g-1or 34.7 ± 3.4 mg.g-1 (d.w.), respectively.

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Section: Contact Time and Phsupporting

confidence: 84%

Biosorption of Zn by dried biomass of Euglena gracilis from aqueous solutions

Machalová,

Lempochner,

Marková

et al. 2024

Nova Biotechnol. Chim.

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“…The heavy metal removal efficiencies of our microalga and cyanobacterium are found to be higher than the efficiencies observed in previous studies with C. vulgaris and A. variabilis [36,43]. Although experimental study to unveil the heavy metal removal mechanisms of our microalgal and cyanobacterial species was not performed, we assume that our C. vulgaris and A. variabilis strains remove the heavy metals through biosorption, as a similar process has also been reported by previous studies regarding these microalgal and cyanobacterial species removing heavy metals (Fe 2+ , Mn 2+ , Zn 2+ , and Cd 2+ ) from aqueous solution [60][61][62]. Both living and dead cells engage in the biosorption process, while heavy metal ions adhere to the functional groups on the cell surface and in the cytoplasm via various mechanisms including ion exchange, coordination or complexation, chelation, and micro-precipitation [63,64].…”

Section: Discussionmentioning

confidence: 57%

Comparative Evaluation of Chlorella vulgaris and Anabaena variabilis for Phycoremediation of Polluted River Water: Spotlighting Heavy Metals Detoxification

Ahammed

Baten

Ali

et al. 2023

Biology

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This study investigated the phycoremediation abilities of Chlorella vulgaris (microalga) and Anabaena variabilis (cyanobacterium) for the detoxification of polluted river water. Lab-scale phycoremediation experiments were conducted for 20 days at 30 °C using the microalgal and cyanobacterial strains and water samples collected from the Dhaleswari river in Bangladesh. The physicochemical properties such as electrical conductivity (EC), total dissolved solids (TDS), biological oxygen demand (BOD), hardness ions, and heavy metals of the collected water samples indicated that the river water is highly polluted. The results of the phycoremediation experiments demonstrated that both microalgal and cyanobacterial species significantly reduced the pollutant load and heavy metal concentrations of the river water. The pH of the river water was significantly raised from 6.97 to 8.07 and 8.28 by C. vulgaris and A. variabilis, respectively. A. variabilis demonstrated higher efficacy than C. vulgaris in reducing the EC, TDS, and BOD of the polluted river water and was more effective at reducing the pollutant load of SO42− and Zn. In regard to hardness ions and heavy metal detoxification, C. vulgaris performed better at removing Ca2+, Mg2+, Cr, and Mn. These findings indicate that both microalgae and cyanobacteria have great potential to remove various pollutants, especially heavy metals, from the polluted river water as part of a low-cost, easily controllable, environmentally friendly remediation strategy. Nevertheless, the composition of polluted water should be assessed prior to the designing of microalgae- or cyanobacteria-based remediation technology, since the pollutant removal efficiency is found to be species dependent.

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“…That is why the development of algae waste management is so important these days. For instance, Li et al prepared bioadsorbents from algae residues for the removal of heavy metals from industrial wastewater [ 9 ] while Wang et al proposed algae-based bioadsorbents for the removal of cadmium ions [ 10 ]. This makes bioplastics based on algae a promising and non-toxic alternative that can reduce the consumption of fossil fuels, improve the quality of plastics and minimize the negative environmental impact caused by the excessive use of petrochemical materials [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Strategy for Algae Biomass Waste Management via Development of Novel Bio-Based Thermoplastic Polyurethane Elastomers Composites

2023

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This work concerns the waste management method of algae biomass wastes (ABW). For this purpose, we prepared bio-based thermoplastic polyurethane elastomer (bio-TPU) composites. Algae biomass wastes are derived from algal oil extraction of Chlorella vulgaris and from biomass of Enteromorpha and Zostera marina. ABWs were used in the bio-TPUs composites as a filler in the quantity of 1, 5, 10, and 15 wt.%. The bio-based composites were prepared via the in situ method. Polymer matrix was synthesized from a bio-based polyester polyol, diisocyanate mixture (composed of partially bio-based and synthetic diisocyanates), and bio-based 1,3 propanediol. In this study, the chemical structure, morphology, thermal and mechanical properties of prepared composites were investigated. Based on the conducted research, it was determined that the type and the content of algae waste influence the properties of the bio-based polyurethane matrix. In general, the addition of algae biomass wastes led to obtain materials characterized by good mechanical properties and noticeable positive ecological impact by increasing the total amount of green components in prepared bio-TPU-based composites from 68.7% to 73.54%.

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Fast and efficient cadmium biosorption by Chlorella vulgaris K-01 strain: The role of cell walls in metal sequestration

Cited by 18 publications

References 62 publications

Biosorption of Zn by dried biomass of Euglena gracilis from aqueous solutions

Biosorption of Zn by dried biomass of Euglena gracilis from aqueous solutions

Comparative Evaluation of Chlorella vulgaris and Anabaena variabilis for Phycoremediation of Polluted River Water: Spotlighting Heavy Metals Detoxification

Sustainable Strategy for Algae Biomass Waste Management via Development of Novel Bio-Based Thermoplastic Polyurethane Elastomers Composites

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