Application of dielectrophoresis towards characterization of rare earth elements biosorption by Cupriavidus necator

Adekanmbi, Ezekiel O.; Giduthuri, Anthony T.; Carv, Bennett A.C.; Counts, Jonathan R.; Moberly, James G.; Srivastava, S. D.

doi:10.1016/j.aca.2020.07.042

Cited by 7 publications

(5 citation statements)

References 48 publications

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“…Thermogravimetric test, elemental analysis, zeta potential and point of zero charge (pHzpc) measurement are alternative parameters that also provide information on the physico-chemical characteristics of the biosorbent. Recently, an electrokinetic method termed as dielectrophoresis (DEP) was applied for the characterization of biosorption [48].…”

Section: Biosorption: Generalitiesmentioning

confidence: 99%

Biosorption: A Review of the Latest Advances

Torres

2020

Processes

148

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Biosorption is a variant of sorption techniques in which the sorbent is a material of biological origin. This technique is considered to be low cost and environmentally friendly, and it can be used to remove pollutants from aqueous solutions. The objective of this review is to report on the most significant recent works and most recent advances that have occurred in the last couple of years (2019–2020) in the field of biosorption. Biosorption of metals and organic compounds (dyes, antibiotics and other emerging contaminants) is considered in this review. In addition, the use and possibilities of different forms of biomass (live or dead, modified or immobilized) are also considered.

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Section: Biosorption: Generalitiesmentioning

confidence: 99%

Biosorption: A Review of the Latest Advances

Torres

2020

Processes

148

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“…While there are several microfluidic techniques available to manipulate cells [56], DEP has been proved by several researchers to separate cells utilizing the minute differences in their dielectric properties [57, 58]. In this simulation study, the principle of separating the C. necator REE‐exposed cells by DEP has been employed, utilizing the membrane dielectric properties [32] instead of the cytoplasmic properties.…”

Section: Resultsmentioning

confidence: 99%

“…The former one signifies the ease at which electricity passes through and the latter one signifies the ability to transmit (or permit) electric field [63]. While bacterial cells possess insulating outer shell (membrane) and conducting interior (cytoplasm), for this simulation study sorting is based on membrane properties [32] as summarized in Table 3.…”

Section: Resultsmentioning

confidence: 99%

“…It is a nondestructive and label/marker free electrokinetic technique to determine the dielectric signatures. Some of the popular methods that employ DEP to characterize and quantify the dielectric signatures of the cells are electrorotation [28–30], zero force method (also termed as crossover frequency method) [31, 32], DEP impedance spectra [33, 34], capture voltage spectra [35], and traveling wave [36, 37], which were well discussed in a recent review article by our research group [38].…”

Section: Theorymentioning

confidence: 99%

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Dielectrophoretic ultra‐high‐frequency characterization and in silico sorting on uptake of rare earth elements by Cupriavidus necator

et al. 2020

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Rare earth elements (REEs) are widely used across different industries due to their exceptional magnetic and electrical properties. In this work, Cupriavidus necator is characterized using dielectrophoretic ultra‐high‐frequency measurements, typically in MHz range to quantify the properties of cytoplasm in C. necator for its metal uptake/bioaccumulation capacity. Cupriavidus necator, a Gram‐negative bacteria strain is exposed to REEs like europium, samarium, and neodymium in this study. Dielectrophoretic crossover frequency experiments were performed on the native C. necator species pre‐ and post‐exposure to the REEs at MHz frequency range. The net conductivity of native C. necator, Cupriavidus europium, Cupriavidus samarium, and Cupriavidus neodymium are 15.95 ± 0.029 μS/cm, 16.15 ± 0.028 μS/cm, 16.05 ± 0.029 μS/cm, 15.61 ± 0.005 μS/cm respectively. The estimated properties of the membrane published by our group are used to develop a microfluidic sorter by modeling and simulation to separate REE absorbed C. necator from the unabsorbed native C. necator species using COMSOL Multiphysics commercial software package v5.5.

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“…REEs play a crucial role in advanced electronics and diagnostic and scanning equipment in various fields, due to their highly magnetic, conductive, phosphorescent, catalytic, electrochemical, and luminescent properties [57,58]. Consequently, REEs have become indispensable in modern sophisticated lifestyles.…”

Section: Reuse Of Reesmentioning

confidence: 99%

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

Gkika,

Chalaris,

Kyzas

2024

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Rare earth elements (REEs) are at the forefront of discussions, given their crucial role in cutting-edge and eco-friendly innovations that propel the industrial revolution towards a green economy. These elements have become indispensable to various modern technologies, such as smartphones, electronic devices, and renewable energy sources. Many different concepts and analyses have been introduced, such as the chemical similarities among REEs, health risks and ecological damages, the negative environmental impacts of current recovery processes, and strategies for advancing REE recovery towards a circular economy. Although these elements have been widely used in various applications over the last 20 years, the literature on these aspects is fragmented and spread across different research areas, shared by multiple branches and application fields. These fields include safety concerns, economic challenges, and technology. Summarizing and classifying this literature is challenging due to its fragmented nature, the variety of topics, and the different approaches used. The quest for cleaner recycling strategies necessitates a comprehensive assessment covering economic, technological, and environmental aspects. The primary goal of this review is to provide a holistic perspective on REEs, with a central focus on their economic, technological, and environmental dimensions, particularly emphasizing reuse, recycling, and occupational safety. The review begins by addressing complexities of REEs, highlighting the associated technologies, environmental concerns, and economic considerations. It further explores the aspects of reuse and recycling of REEs, shedding light on the advantages, drawbacks, hazards, and costs associated with recycling technologies for REE recovery. Additionally, the review summarizes occupational exposure and safety considerations related to REEs.

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Application of dielectrophoresis towards characterization of rare earth elements biosorption by Cupriavidus necator

Cited by 7 publications

References 48 publications

Biosorption: A Review of the Latest Advances

Biosorption: A Review of the Latest Advances

Dielectrophoretic ultra‐high‐frequency characterization and in silico sorting on uptake of rare earth elements by Cupriavidus necator

Review of Methods for Obtaining Rare Earth Elements from Recycling and Their Impact on the Environment and Human Health

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