Biosorption of copper by biomass of extremophilic algae

Остроумов, С. А.; Shestakova, T. V.; Тропин, И. В.

doi:10.1134/s1070363215130150

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…In this study, it was shown that between the two pH values tested, 2.5 and 4.5, the optimal value for removal was the subneutral one. The results obtained agree with the literature, according to which the best performances of algal biomass of G. sulphuraria ACUF427 are registered at pH 4.5 [26].…”

Section: Discussionsupporting

confidence: 90%

“…Few studies have been carried out on G. sulphuraria as a tool for biosorption of different types of metals in metal solutions. The biosorption of copper by G. sulphuraria was studied [26]; specifically, the interaction of copper and lead with G. sulphuraria in an aquatic medium was studied using stripping voltammetry. The biosorption of copper was detected using both viable and dead cells (2.4-2.8 µg/g), while lead was never biosorbed either by living and by dead cells, thus suggesting a selectivity feature of the algal strain.…”

Section: Discussionmentioning

confidence: 99%

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Galdieria sulphuraria ACUF427 Freeze-Dried Biomass as Novel Biosorbent for Rare Earth Elements

et al. 2022

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Rare earth elements (REEs) are essential components of modern technologies and are often challenging to acquire from natural resources. The demand for REEs is so high that there is a clear need to develop efficient and environmentally-friendly recycling methods. In the present study, freeze-dried cells of the extremophile Galdieria sulphuraria were employed to recover yttrium, cerium, europium, and terbium from quaternary-metal aqueous solutions. The biosorption capacity of G. sulphuraria freeze-dried algal biomass was tested at different pHs, contact times, and biosorbent dosages. All rare earths were biosorbed in a more efficient way by the lowest dose of biosorbent, at pH 4.5, within 30 min; the highest removal rate of cerium was recorded at acidic pH (2.5) and after a longer contact time, i.e., 360 min. This study confirms the potential of freeze-dried cells of G. sulphuraria as innovative ecological biosorbents in technological applications for sustainable recycling of metals from e-waste and wastewater.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Galdieria sulphuraria ACUF427 Freeze-Dried Biomass as Novel Biosorbent for Rare Earth Elements

et al. 2022

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“…In the study conducted by Ostroumov et al [30], after 30 days of incubation, the average Pb concentration was reduced by 84% using G. sulphuraria IPPAS P-513. However, in a separate study by Ostroumov et al [35], both stripping voltammetry and vitrified mortmass techniques failed to detect Pb in the biomass. Investigation into Pb removal efficiency using the green microalga Chlamydomonas reinhardtii was conducted by Flouty et al [36], yielding an 8% removal efficiency.…”

Section: Discussionmentioning

confidence: 93%

Removal of Cadmium and Lead from Synthetic Wastewater Using Galdieria sulphuraria

Kharel,

Shrestha,

Tan

et al. 2023

Environments

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The strain of red microalgae Galdieria sulphuraria CCMEE 5587.1 was evaluated in a controlled laboratory environment for its ability to tolerate and remove two heavy metal (HM) ions: cadmium [Cd(II)] and lead [Pb(II)] in aqueous solutions as a single metal species. Various concentrations (0 mg L−1 to 5 mg L−1) of Cd and Pb ions were added to the Cyanidium medium in which the chosen microalgae strain G. sulphuraria CCMEE 5587.1 was grown at an acidic pH of 2.5. The effectiveness of G. sulphuraria CCMEE 5587.1 in tolerating and removing these two metal ions was measured by analyzing its growth profile, growth rate, nutrient removal, and metal ion removal efficiency. The growth of G. sulphuraria CCMEE 5587.1 was inhibited during the initial days of incubation, and the growth rate decreased when the HM concentration in the media was increased. Nutrient removal in the HM-containing media is comparable to that in the control media at low metal concentrations but decreases as the metal concentration rises. G. sulphuraria CCMEE 5587.1 has the highest removal efficiency for Cd and Pb in a medium containing 2.5 mg L−1 of metal ions, which is 49.80% and 25.10%, and the corresponding sorption capacity is 1.45 mg g−1 and 0.53 mg g−1 of dry biomass, respectively. These findings suggest that G. sulphuraria CCMEE 5587.1 holds potential as a viable bioremediation solution for extracting Cd and Pb from wastewater, alongside its capacity to remove nutrients concurrently. The study underscores the dual advantage of G. sulphuraria CCMEE 5587.1, making it a promising candidate for addressing heavy metal pollution in wastewater treatment processes.

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“…The removal efficacy of HM is also impacted by the method of biomass analysis. In another set of experiments carried out by Ostroumov et al [ 65 ], the two methods used for the removal of Pb and Cu were stripping voltammetry and vitrified mortmass. While using stripping voltammetry, the biosorption of Cu was observed, while the biosorption of Pb was not.…”

Section: Cyanidiales and Their Effectiveness In Heavy Metal Removalmentioning

confidence: 99%

Cyanidiales-Based Bioremediation of Heavy Metals

Kharel

Shrestha

Tan

et al. 2023

BioTech

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With growing urbanization and ongoing development activities, the consumption of heavy metals has been increasing globally. Although heavy metals are vital for the survival of living beings, they can become hazardous when they surpass the permissible limit. The effect of heavy metals varies from normal to acute depending on the individual, so it is necessary to treat the heavy metals before releasing them into the environment. Various conventional treatment technologies have been used based on physical, chemical, and biological methods. However, due to technical and economic constraints and poor sustainability towards the environment, the use of these technologies has been limited. Microalgal-based heavy metal removal has been explored for the past few decades and has been seen as an effective, environment-friendly, and inexpensive method compared to conventional treatment technology. Cyanidiales that belong to red algae have the potential for remediation of heavy metals as they can withstand and tolerate extreme stresses of heat, acid salts, and heavy metals. Cyanidiales are the only photosynthetic organisms that can survive and thrive in acidic mine drainage, where heavy metal contamination is often prevalent. This review focuses on the algal species belonging to three genera of Cyanidiales: Cyanidioschyzon, Cyanidium, and Galdieria. Papers published after 2015 were considered in order to examine these species’ efficiency in heavy metal removal. The result is summarized as maximum removal efficiency at the optimum experimental conditions and based on the parameters affecting the metal ion removal efficiency. This study finds that pH, initial metal concentration, initial algal biomass concentration, algal strains, and growth temperature are the major parameters that affect the heavy metal removal efficiency of Cyanidiales.

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Biosorption of copper by biomass of extremophilic algae

Cited by 9 publications

References 27 publications

Galdieria sulphuraria ACUF427 Freeze-Dried Biomass as Novel Biosorbent for Rare Earth Elements

Galdieria sulphuraria ACUF427 Freeze-Dried Biomass as Novel Biosorbent for Rare Earth Elements

Removal of Cadmium and Lead from Synthetic Wastewater Using Galdieria sulphuraria

Cyanidiales-Based Bioremediation of Heavy Metals

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