Recent advances in engineering aptamer-based sensing and recovery of heavy metals and rare earth elements for environmental sustainability

Shin, Wansik; Ahn, Gna; Lee, Jin-Pyo; Oh, In‐Hwan; Ahn, Ji‐Young; Kim, Yang‐Hoon; Chae, Soryong

doi:10.1016/j.cej.2023.144742

Cited by 23 publications

(6 citation statements)

References 203 publications

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“…In general, the predominant mechanisms by which HM ions are adsorbed onto the surface of MCS involve a range of interactions, including electrostatic attraction, chemical bonding (e.g., complexation and chelation), ion exchange, and Van der Waals forces. The functional groups of CS and its derivatives play a pivotal role in forming coordination complexes with HM ions (Shin et al, 2023). The formation of surface complexes assists in immobilizing HM ions onto the CS surface.…”

Section: Understanding Adsorption Mechanisms Of Cs-based Adsorbentsmentioning

confidence: 99%

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Chitosan-Based Biostimulation: A Novel Approach for Simultaneous Remediation of Co-Existing Cadmium and Arsenic Contamination in Soil

Ullah,

Hayat,

Qiao

2023

Air, Soil and Water Research

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Cadmium (Cd) and arsenic (As) are both potentially toxic heavy metals (HMs) found ubiquitously in the environment. These HMs are prevalent in soil due to natural occurrences or anthropogenic activities. Co-contamination of Cd and As in soil is a major concern for plant and human health as well as ecosystem sustainability due to their hazardous properties. Therefore, a global imperative is developing improved technologies for managing and remediating soil co-contaminated with Cd and As. One effective solution for remediating Cd/As co-contaminated soil involves the utilization of natural biopolymers and biostimulants, such as chitosan (CS). CS offers distinct advantages, including its ready availability, biodegradability, biocompatibility, environmental friendliness, and cost-effectiveness when compared to alternative adsorbents. The adsorption mechanism of CS and CS-based adsorbents for Cd and As primarily relies on electrostatic attraction, complexation, and ion exchange. This review article provides a comprehensive overview of Cd and As co-contamination in soil, elucidating their sources, distribution patterns, exposure pathways, and the prospective remediation approaches employing CS biostimulants and CS-based adsorbents. Furthermore, it summarizes recent studies investigating the adsorption of Cd/As by CS, the factors influencing the adsorption efficiency and the challenges associated with the utilization of CS and CS-based adsorbents. In conclusion, the review underscores the need for further research to concurrently remediate Cd and As co-contaminated soil, enhance the adsorption efficiency of CS and CS-based composites, and broaden their practical applicability for remediating co-contaminated soils.

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Section: Understanding Adsorption Mechanisms Of Cs-based Adsorbentsmentioning

confidence: 99%

“…These resins exhibit high selectivity for Cd and As and can be tailored to target specific metals. However, chelating resins can be expensive, and their regeneration process might require the use of harsh chemicals (Shin et al, 2023). CS-based adsorbents offer several advantages for Cd and As removal (Sajid, 2022).…”

Section: Comparison With Other Adsorbentsmentioning

confidence: 99%

Chitosan-Based Biostimulation: A Novel Approach for Simultaneous Remediation of Co-Existing Cadmium and Arsenic Contamination in Soil

Ullah,

Hayat,

Qiao

2023

Air, Soil and Water Research

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“…2,20 Thus, a lot of works have been published in the literature for Eu( iii ) and Tb( iii ) detection, while only a small portion has been done in aqueous media (this also holds true for other REEs, Scheme 1), 23–42 despite most real-world detections being done in water. 20,28,37,38,43 It is generally believed that selective REE detection in aqueous media with high sensitivity is tricky, mainly for following reasons: (1) synthetic and purification obstacles for water-soluble ligands themselves with respect to lipophilic ones; 44,45 (2) water could quench the emission for the ligand and complex because of its high polarity (rich in high energy vibrational O–H stretches and its overtones) and more polarized ligand/complex excited state (compared to the ground state), especially for near-infrared emissions; 4,20 (3) the strong coordination ability of water molecules requires more desolvation energy for a stronger ligand to give stable complexes, 8 while somewhat reducing the ligand selectivity. Furthermore, organic ligand-based REE photoluminescence sensors are highly pursued for their defined molecular structures, readily adjustable emissions, ease of preparation and repeatable production.…”

Section: Introductionmentioning

confidence: 99%

A step forward in unraveling the lanthanide discrimination puzzle: structure–selectivity relationship based on phenanthroline diimide ligands towards europium and terbium detection in water

Kang,

Li,

Bao

et al. 2024

J. Mater. Chem. C

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“…Solvent extraction has the advantages of achieving high selectivity for specific REEs, scalable for both laboratory and industrial applications, and extracting agents can be tailored for different REEs. However, the drawback is the complex processes involved, and environmental and safety considerations [22].…”

Section: Introductionmentioning

confidence: 99%

Polymeric Materials for Rare Earth Elements Recovery

Zhang,

Gao

2023

Gels

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Rare earth elements (REEs) play indispensable roles in various advanced technologies, from electronics to renewable energy. However, the heavy global REEs supply and the environmental impact of traditional mining practices have spurred the search for sustainable REEs recovery methods. Polymeric materials have emerged as promising candidates due to their selective adsorption capabilities, versatility, scalability, and regenerability. This paper provides an extensive overview of polymeric materials for REEs recovery, including polymeric resins, polymer membranes, cross-linked polymer networks, and nanocomposite polymers. Each category is examined for its advantages, challenges, and notable developments. Furthermore, we highlight the potential of polymeric materials to contribute to eco-friendly and efficient REEs recovery, while acknowledging the need to address challenges such as selectivity, stability, and scalability. The research in this field actively seeks innovative solutions to reduce reliance on hazardous chemicals and minimize waste generation. As the demand for REEs continues to rise, the development of sustainable REEs recovery technologies remains a critical area of investigation, with the collaboration between researchers and industry experts driving progress in this evolving field.

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Recent advances in engineering aptamer-based sensing and recovery of heavy metals and rare earth elements for environmental sustainability

Cited by 23 publications

References 203 publications

Chitosan-Based Biostimulation: A Novel Approach for Simultaneous Remediation of Co-Existing Cadmium and Arsenic Contamination in Soil

Chitosan-Based Biostimulation: A Novel Approach for Simultaneous Remediation of Co-Existing Cadmium and Arsenic Contamination in Soil

A step forward in unraveling the lanthanide discrimination puzzle: structure–selectivity relationship based on phenanthroline diimide ligands towards europium and terbium detection in water

Polymeric Materials for Rare Earth Elements Recovery

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