Growth of the Red Alga Galdieria sulphuraria in Red Mud-Containing Medium and Accumulation of Rare Earth Elements

Náhlík, Vít; Čížková, Mária; Singh, Anjali; Mezricky, Dana; Rucki, Marián; Andresen, Elisa; Vítová, Milada

doi:10.1007/s12649-022-02021-3

Cited by 7 publications

(4 citation statements)

References 61 publications

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“…Our results showed that both the control and CFL–treated cultures expressed a fall in the F v /F m ratio at the initial hour of the experiment, which could be due to sudden light exposure after a long (8 h) dark phase ( Figure 3 ). Comparable F v /F m values and pattern were determined during the cell cycle of G. sulphuraria treated with red mud extract ( Náhlík et al, 2022 ). Fu et al also observed a similar pattern in Galdieria partita , where the F v /F m value started to decrease rapidly within 1 h of high light exposure ( Fu et al, 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Bio-removal of rare earth elements from hazardous industrial waste of CFL bulbs by the extremophile red alga Galdieria sulphuraria

Singh

Čížková²,

Náhlík³

et al. 2023

Front. Microbiol.

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In recent decades, a shift has been seen in the use of light-emitting diodes over incandescent lights and compact fluorescent lamps (CFL), which eventually led to an increase in wastes of electrical equipment (WEE), especially fluorescent lamps (FLs) and CFL light bulbs. These widely used CFL lights, and their wastes are good sources of rare earth elements (REEs), which are desirable in almost every modern technology. Increased demand for REEs and their irregular supply have exerted pressure on us to seek alternative sources that may fulfill this demand in an eco-friendly manner. Bio-removal of wastes containing REEs, and their recycling may be a solution to this problem and could balance environmental and economic benefits. To address this problem, the current study focuses on the use of the extremophilic red alga, Galdieria sulphuraria, for bioaccumulation/removal of REEs from hazardous industrial wastes of CFL bulbs and the physiological response of a synchronized culture of G. sulphuraria. A CFL acid extract significantly affected growth, photosynthetic pigments, quantum yield, and cell cycle progression of this alga. A synchronous culture was able to efficiently accumulate REEs from a CFL acid extract and efficiency was increased by including two phytohormones, i.e., 6-Benzylaminopurine (BAP - Cytokinin family) and 1-Naphthaleneacetic acid (NAA - Auxin family).

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Section: Discussionmentioning

confidence: 99%

Bio-removal of rare earth elements from hazardous industrial waste of CFL bulbs by the extremophile red alga Galdieria sulphuraria

Singh

Čížková²,

Náhlík³

et al. 2023

Front. Microbiol.

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“…Lyngbya sp. D. quadricauda C. reinhardtii P. kessleri Bioaccumulation Bioaccumulation Bioaccumulation Bioaccumulation Bioaccumulation Bioaccumulation Bioaccumulation batch, 3d, 40 °CC, pH3, 500 µmol/s/m 2 batch, 45d batch, 45d batch, 45d batch, 5d, 30 °CC, pH 6.5–7.5, 500 µmol/s/m 2 batch, 5d, 30 °CC, pH6.5–7.5, 500 µmol/s/m 2 batch, 5d, 30 °CC, pH 6.5–7.5, 500 µmol/s/m 2 Náhlík et al ( 2023 ) Dubey and Dubey ( 2011 ) Čížková et al ( 2019a ) REEs from ore Phormidium Biosorption batch, 1–120 min, RT, pH 1–8 Kim et al ( 2011 ) …”

Section: Algaementioning

confidence: 99%

“…they were not only adsorbed onto the cell wall. G. sulphuraria accumulated significant levels of Ce, Nd, La and Y from red mud, a byproduct of alumina production (Náhlík et al 2023 ), and REEs from waste luminophores (Singh et al 2023 ). Another red alga Galdieria phlegrea was used to test bioaccumulation of REEs from luminophores from fluorescence lamps and energy saving light bulbs added into the medium in the form of a powder.…”

Section: Algaementioning

confidence: 99%

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Vítová,

Mezricky

2024

World J Microbiol Biotechnol

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Rare Earth Elements (REEs) are indispensable in contemporary technologies, influencing various aspects of our daily lives and environmental solutions. The escalating demand for REEs has led to increased exploitation, resulting in the generation of diverse REE-bearing solid and liquid wastes. Recognizing the potential of these wastes as secondary sources of REEs, researchers are exploring microbial solutions for their recovery. This mini review provides insights into the utilization of microorganisms, with a particular focus on microalgae, for recovering REEs from sources such as ores, electronic waste, and industrial effluents. The review outlines the principles and distinctions of bioleaching, biosorption, and bioaccumulation, offering a comparative analysis of their potential and limitations. Specific examples of microorganisms demonstrating efficacy in REE recovery are highlighted, accompanied by successful methods, including advanced techniques for enhancing microbial strains to achieve higher REE recovery. Moreover, the review explores the environmental implications of bio-recovery, discussing the potential of these methods to mitigate REE pollution. By emphasizing microalgae as promising biotechnological candidates for REE recovery, this mini review not only presents current advances but also illuminates prospects in sustainable REE resource management and environmental remediation.

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“… Macro Protonation with HCl solution – X Sm, Pr 82–99 mg L −1 X X 5 2 g L −1 Sm: 51.1 mg g −1 Pr: 40.9 mg g −1 Manikandan and Lens ( 2022 ) Ulva sp. Macro Prior extraction of ulvan in biomass – X La, Nd, Dy 10–1000 mg L −1 X – 7 3 g L −1 La: 119.3 mg g −1 Nd: 125.3 mg g −1 Dy: 128.5 mg g −1 Náhlík et al 2022 G. sulphuraria Micro – X – Ce, Nd, La, Y 3.3–6.1 mg L −1 – X 3 1 × 10 6 cells L −1 Ce: 26 μg g −1 Nd: 15 μg g −1 La: 11 μg g −1 Y: 11 μg g −1 Palmieri et al 2000 Monoraphidium sp. Micro – – X Nd 4000 mg L −1 X – 1.5 0.46 g L −1 1600 mg g −1 Palmieri et al 2002 S. fluitans …”

Section: Technologies For the Recovery Of Rare-earth Elements From Se...mentioning

confidence: 99%

Algal sorbents and prospects for their application in the sustainable recovery of rare earth elements from E-waste

Pinto

Colónia

Abdolvaseei

et al. 2023

Environ Sci Pollut Res

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Efficient and sustainable secondary sourcing of Rare-Earth Elements (REE) is essential to counter supply bottlenecks and the impacts associated with primary mining. Recycled electronic waste (E-waste) is considered a promising REE source and hydrometallurgical methods followed by chemical separation techniques (usually solvent extraction) have been successfully applied to these wastes with high REE yields. However, the generation of acidic and organic waste streams is considered unsustainable and has led to the search for “greener” approaches. Sorption-based technologies using biomass such as bacteria, fungi and algae have been developed to sustainably recover REE from e-waste. Algae sorbents in particular have experienced growing research interest in recent years. Despite its high potential, sorption efficiency is strongly influenced by sorbent-specific parameters such as biomass type and state (fresh/dried, pre-treatment, functionalization) as well as solution parameters such as pH, REE concentration, and matrix complexity (ionic strength and competing ions). This review highlights differences in experimental conditions among published algal-based REE sorption studies and their impact on sorption efficiency. Since research into algal sorbents for REE recovery from real wastes is still in its infancy, aspects such as the economic viability of a realistic application are still unexplored. However, it has been proposed to integrate REE recovery into an algal biorefinery concept to increase the economics of the process (by providing a range of additional products), but also in the prospect of achieving carbon neutrality (as large-scale algae cultivation can act as a CO2 sink). Graphical abstract

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Growth of the Red Alga Galdieria sulphuraria in Red Mud-Containing Medium and Accumulation of Rare Earth Elements

Cited by 7 publications

References 61 publications

Bio-removal of rare earth elements from hazardous industrial waste of CFL bulbs by the extremophile red alga Galdieria sulphuraria

Bio-removal of rare earth elements from hazardous industrial waste of CFL bulbs by the extremophile red alga Galdieria sulphuraria

Microbial recovery of rare earth elements from various waste sources: a mini review with emphasis on microalgae

Algal sorbents and prospects for their application in the sustainable recovery of rare earth elements from E-waste

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