Microalgae: a sustainable adsorbent with high potential for upconcentration of indium(<scp>iii</scp>) from liquid process and waste streams

Nicomel, Nina Ricci; Otero-González, Lila; Arashiro, Larissa T.; Garfí, Marianna; Ferrer, Ivet; Voort, Pascal Van Der; Verbeken, Kim; Hennebel, Tom; Laing, Gijs Du

doi:10.1039/c9gc03073e

Cited by 18 publications

(4 citation statements)

References 41 publications

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“…For the acidic solutions, HCQ removal was low to nil, with removal percentages of 4.76 ± 1.0% and 0.84 ± 0.4% for pH 5.12 ± 0.11 and 3.1 ± 0.1 respectively. This could be due to the high concentration of hydronium ions competing for binding sites on the biomass and limiting adsorption of HCQ (Nicomel et al, 2020) or to the destruction or dissociation of microalgal cells at acidic pH. From these results, it could be concluded that the optimal pH for better HCQ removal was pH = 9.9 ± 0.1.…”

Section: Resultsmentioning

confidence: 98%

“…The control solutions showed that the transformation of HCQ could only take place in alkaline media (pH = 9.9 ± 0.1 and pH = 8.22 ± 0.08). At neutral and alkaline pH levels, there were more sites on the surface of the microalgae available for biosorption (Nicomel et al, 2020). For the acidic solutions, HCQ removal was low to nil, with removal percentages of 4.76 ± 1.0% and 0.84 ± 0.4% for pH 5.12 ± 0.11 and 3.1 ± 0.1 respectively.…”

Section: Resultsmentioning

confidence: 99%

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Removal of hydroxychloroquine from an aqueous solution using living microalgae: Effect of operating parameters on removal efficiency and mechanisms

Amri

Elkacmi

Hasib

et al. 2022

Water Environment Research

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Wastewater contaminated with hydroxychloroquine (HCQ) poses a serious threat to the environment and human life. This study aimed to evaluate the ability of living microalgae to remove HCQ from an aqueous solution. Batch mode experiments were conducted under different conditions to investigate the effect of operating parameters on HCQ removal efficiency and mechanisms. Equilibrium, kinetic and thermodynamic study was also carried out to better describe the interactions between HCQ and microalgae. The maximum HCQ removal was 92.10 ± 1.25% obtained under optimal pH of 9.9 ± 0.1, a contact time of 45 min, a stirring speed of 300 rpm, an initial HCQ concentration of 20 mg/L, and a microalgae dose of 100 mg/L. The Langmuir isotherm and the pseudo-second-order kinetic model were best suited for the biosorption experiments, and the maximum biosorption capacity was 339.02 mg/g. The thermodynamic study showed that the biosorption process was exothermic and spontaneous. Experiments on real wastewater showed that the HCQ removal was not significantly affected by the presence of other contaminants in the water. Practitioner Points• The best HCQ removal was 92.10 ± 1.25% obtained under optimal conditions. • The Langmuir isotherm and the pseudo-second-order kinetic model were best suited for the biosorption experiments.• The maximum biosorption capacity was 339.02 mg/g.• The thermodynamic study showed that the biosorption process was exothermic and spontaneous.• The microalgae studied can be successfully used in HCQ removal from water.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Removal of hydroxychloroquine from an aqueous solution using living microalgae: Effect of operating parameters on removal efficiency and mechanisms

Amri

Elkacmi

Hasib

et al. 2022

Water Environment Research

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“…Conventional technologies have been used for In recovery from liquid processes and waste streams, but these conventional methodologies show many disadvantages, such as high requirements for reagents and energy, high capital and operational costs, generation of toxic waste products, and low recovery yield from low In concentration streams ( Nicomel et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

A DedA Family Membrane Protein in Indium Extrusion in Rhodanobacter sp. B2A1Ga4

et al. 2021

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Indium (In) is a critical metal widely used in electronic equipment, and the supply of this precious metal is a major challenge for sustainable development. The use of microorganisms for the recovery of this critical high-tech element has been considered an excellent eco-friendly strategy. The Rhodanobacter sp. B2A1Ga4 strain, highly resistant to In, was studied in order to disclose the bacterial mechanisms closely linked to the ability to cope with this metal. The mutation of the gene encoding for a DedA protein homolog, YqaA, affected drastically the In resistance and the cellular metabolic activity of strain Rhodanobacter sp. B2A1Ga4 in presence of this metal. This indicates that this protein plays an important role in its In resistance phenotype. The negative impact of In might be related to the high accumulation of the metal into the mutant cells showing In concentration up to approximately 4-fold higher than the native strain. In addition, the expression of the yqaA gene in this mutant reverted the bacterial phenotype with a significant decrease of In accumulation levels into the cells and an increase of In resistance. Membrane potential measurements showed similar values for native and mutant cells, suggesting that there was no loss of proton-motive force in the mutant cells. The results from this study suggest a potential role of this DedA family protein as a membrane transporter involved in the In efflux process. The mutant strain also has the potential to be used as a biotool in bioaccumulation strategies, for the recovery of In in biomining activities.

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“…13 They also present great potential as an eco-friendly alternative to synthetic adsorbents. 14 Various kinds of biopolymers have been reported as suitable biosorbents for uranium and rare earth metal ions, such as fungi (yeast (Saccharomyces cerevisiae) embedded cellulose, 25.9 mg g À1 for Eu 3+ ), 15 bacteria (Pseudomonas aeruginosa, 208 mmol g À1 dry biomass for La 3+ ) 16 and cellulose nanober (167 mg g À1 for UO 2…”

Section: Introductionmentioning

confidence: 99%

Mild hydrothermally treated brewer's spent grain for efficient removal of uranyl and rare earth metal ions

Böhm

Wenzel

et al. 2020

RSC Adv.

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Microalgae: a sustainable adsorbent with high potential for upconcentration of indium(iii) from liquid process and waste streams

Abstract: Unmodified microalgal biomass grown on wastewater works as an effective and selective indium biosorbent even at low pH values.

Cited by 18 publications

References 41 publications

Removal of hydroxychloroquine from an aqueous solution using living microalgae: Effect of operating parameters on removal efficiency and mechanisms

Removal of hydroxychloroquine from an aqueous solution using living microalgae: Effect of operating parameters on removal efficiency and mechanisms

A DedA Family Membrane Protein in Indium Extrusion in Rhodanobacter sp. B2A1Ga4

Mild hydrothermally treated brewer's spent grain for efficient removal of uranyl and rare earth metal ions

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