Sorption of europium on diatom biosilica as model of a “green” sorbent for f-elements

Kammerlander, Kaitlin Kim Karlotta; Köhler, Lydia; Huittinen, Nina; Bok, Frank; Steudtner, Robin; Oschatz, Cathleen; Vogel, Manja; Stumpf, Thorsten; Brunner, Eike

doi:10.1016/j.apgeochem.2020.104823

Cited by 12 publications

(7 citation statements)

References 43 publications

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“…Currently, the urgent challenge in hydrometallurgy is the development of effective sorption technologies for REE recovery from wastewater solutions [ 16 , 17 , 18 , 19 , 20 ]. Various adsorbents, such as clays [ 21 , 22 , 23 ], functionalized magnetic chitosan nanoparticles [ 24 , 25 , 26 ], carbon adsorbents [ 27 , 28 , 29 , 30 ], biosorbents [ 31 , 32 , 33 ], hydrogels [ 34 , 35 , 36 , 37 , 38 ], and ion exchangers [ 39 , 40 , 41 , 42 ], can be used to recover various metal ions from aqueous solutions. The recovered metals have wide applications in catalysis, pyrotechnics, coal chemistry, and other fields [ 43 , 44 , 45 , 46 , 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Jumadilov,

Khimersen,

Haponiuk

et al. 2024

Polymers

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The growing demand for rare earth elements (REE) requires the search for economically viable materials to efficiently recover REE from various solutions. Our research aims to investigate the potential of using a combination of the ion exchangers Lewatit CNP LF (in H+ form) and AV-17-8 (in OH− form) as an interpolymer system, “Lewatit CNP LF@AV-17-8” (X:Y), with varying mass ratios of X:Y to enhance the sorption efficiency of lutetium ions from nitrate solution. During the study, we used a range of analytical methodologies, including gravimetry, ultraviolet-visible (UV-VIS) spectroscopy, and inductively coupled plasma optical emission spectroscopy (ICP-OES). Our findings demonstrate that the interpolymer system “Lewatit CNP LF@AV-17-8” (X:Y), with a mass ratio of 4:2, exhibited a significantly enhanced sorption rate of Lu3+ ions (42%) compared to the individual Lewatit CNP LF (6:0) (25%) and the individual AV-17-8 (0:6) (21%) over a 48 h period. Moreover, this interpolymer system has demonstrated notable conformity to the Freundlich adsorption model, highlighting its performance as an effective sorbent for lutetium (III) ions. Notably, our study presents a novel utilization of the interpolymer system “Lewatit CNP LF@AV-17-8” (4:2), with an adsorption capacity of 221.05 mg/g, to enhance the recovery of lutetium ions. The research findings demonstrate its potential for enhancing the recovery of REE.

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Section: Introductionmentioning

confidence: 99%

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Jumadilov,

Khimersen,

Haponiuk

et al. 2024

Polymers

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“…In contrast, fresh diatom biosilica from axenic cultures is a much better defined material. Envisioned applications are for example filtration [12], sorption [13,14], catalysis [15], and optics [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Tailoring the Surface of Aluminum‐Enriched Diatom Biosilica

Köhler

Kaskel

Brunner

2023

Chemie Ingenieur Technik

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Aluminosilicates are widely used as sorbent materials, ion exchangers, and catalysts. While they are often synthesized by hydrothermal methods, microorganisms may open “green” synthesis ways. Diatoms can incorporate aluminum into their micro‐ and nanostructured silica‐based cell walls. Thus, diatoms create intricately structured aluminosilicate materials. The present study investigates not only possible morphological changes during the in vivo Al‐enrichment of the diatom species Thalassiosira pseudonana, but also the increase of the specific surface area of Al‐enriched biosilica in vitro by etching with alkaline solutions.

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“…Some studies are conducted to find suitable “green” sorbents (e.g., cell walls of Stephanopyxis turris and Thalassiosira pseudonana ) to remediate Eu and model sorption reaction by using diffuse double layer model [ 11 ]. In sorption, different uptake mechanisms are possible: surface adsorption and incorporation/precipitation.…”

Section: Introductionmentioning

confidence: 99%

Time-Dependent Size and Shape Evolution of Gold and Europium Nanoparticles from a Bioproducing Microorganism, a Cyanobacterium: A Digitally Supported High-Resolution Image Analysis

et al. 2022

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Herein, the particle size distributions (PSDs) and shape analysis of in vivo bioproduced particles from aqueous Au3+ and Eu3+ solutions by the cyanobacterium Anabaena sp. are examined in detail at the nanoscale. Generally, biosynthesis is affected by numerous parameters. Therefore, it is challenging to find the key set points for generating tailored nanoparticles (NPs). PSDs and shape analysis of the Au and Eu-NPs were performed with ImageJ using high-resolution transmission electron microscopy (HR-TEM) images. As the HR-TEM image analysis reflects only a fraction of the detected NPs within the cells, additional PSDs of the complete cell were performed to determine the NP count and to evaluate the different accuracies. Furthermore, local PSDs were carried out at five randomly selected locations within a single cell to identify local hotspots or agglomerations. The PSDs show that particle size depends mainly on contact time, while the particle shape is hardly affected. The particles formed are distributed quite evenly within the cells. HR-PSDs for Au-NPs show an average equivalent circular diameter (ECD) of 8.4 nm (24 h) and 7.2 nm (51 h). In contrast, Eu-NPs preferably exhibit an average ECD of 10.6 nm (10 h) and 12.3 nm (244 h). Au-NPs are classified predominantly as “very round” with an average reciprocal aspect ratio (RAR) of ~0.9 and a Feret major axis ratio (FMR) of ~1.17. Eu-NPs mainly belong to the “rounded” class with a smaller RAR of ~0.6 and a FMR of ~1.3. These results show that an increase in contact time is not accompanied by an average particle growth for Au-NPs, but by a doubling of the particle number. Anabaena sp. is capable of biosorbing and bioreducing dissolved Au3+ and Eu3+ ions from aqueous solutions, generating nano-sized Au and Eu particles, respectively. Therefore, it is a low-cost, non-toxic and effective candidate for a rapid recovery of these sought-after metals via the bioproduction of NPs with defined sizes and shapes, providing a high potential for scale-up.

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Sorption of europium on diatom biosilica as model of a “green” sorbent for f-elements

Cited by 12 publications

References 43 publications

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Enhanced Lutetium Ion Sorption from Aqueous Solutions Using Activated Ion Exchangers

Tailoring the Surface of Aluminum‐Enriched Diatom Biosilica

Time-Dependent Size and Shape Evolution of Gold and Europium Nanoparticles from a Bioproducing Microorganism, a Cyanobacterium: A Digitally Supported High-Resolution Image Analysis

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