4.7 Article

Analysis of the Adsorption-Release Isotherms of Pentaethylenehexamine-Modified Sorbents for Rare Earth Elements (Y, Nd, La)

Related references

Note: Only part of the references are listed.
Article Chemistry, Multidisciplinary

Understanding the Adsorption of Rare-Earth Elements in Oligo-Grafted Mesoporous Carbon

Pasquale Gismondi et al.

Summary: Rare-earth elements (REEs) are essential in modern society and efficient recovery and separation of REEs is crucial. This study focused on grafting oligos onto carbon-based materials for the adsorption of REEs, with results showing variations in adsorption amounts based on the atomic radius and density of the REEs.

LANGMUIR (2022)

Article Polymer Science

Capture and Release Mechanism of Ni and La Ions via Solid/Liquid Process: Use of Polymer-Modified Clay and Activated Carbons

Cinzia Cristiani et al.

Summary: This study aims to develop an efficient method for recovering rare earths and transition metals from waste electrical and electronic equipment. The capture and release capability of mineral clays and activated carbons are evaluated in lab-scale experiments. The results show that modified sorbents significantly enhance the capture capability of the metals, and the metals can be released and recovered through acid treatment.

POLYMERS (2022)

Article Polymer Science

Cetylpyridinium Bromide/Polyvinyl Chloride for Substantially Efficient Capture of Rare Earth Elements from Chloride Solution

Eman M. Allam et al.

Summary: A new sorbent CPB/PVC was prepared and tested for extracting rare earth elements from chloride solutions. The study investigated the impact of various factors on the sorption process and found the optimal conditions. The experimental results showed that the prepared CPB/PVC sorbent had good adsorption performance and could be used for desorption of rare earth elements. This is of significant importance for the extraction and application of rare earth elements.

POLYMERS (2022)

Article Materials Science, Multidisciplinary

Dispersive Solid-Liquid Microextraction Based on the Poly(HDDA)/Graphene Sorbent Followed by ICP-MS for the Determination of Rare Earth Elements in Coal Fly Ash Leachate

Latinka Slavkovic-Beskoski et al.

Summary: A new DSPME sorbent was synthesized using microfluidic emulsification/photopolymerization. This sorbent was applied for simple, fast, and sensitive vortex-assisted DSPME of rare earth elements in coal fly ash leachate, prior to their quantification by ICP-MS.

METALS (2022)

Article Chemistry, Physical

Physicochemical, structural, and adsorption properties of chemically and thermally modified activated carbons

Alicja Bosacka et al.

Summary: The acid-base character of granular activated carbon was modified chemically and thermally in order to study its affinity towards aromatic organic compounds. Various analytical techniques were used to analyze the modified activated carbons, and experimental data on adsorption equilibrium and kinetics were measured and analyzed.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

Article Chemistry, Physical

Green Preparation of Aminated Magnetic PMMA Microspheres via EB Irradiation and Its Highly Efficient Uptake of Ce(III)

Yuan Zhao et al.

Summary: In this study, a novel magnetic chelating resin was synthesized by suspension polymerization and irradiation-induced grafting for the uptake of Ce(III) from wastewater. The obtained adsorbent showed promising performance in removing rare earth ions.

MATERIALS (2022)

Article Multidisciplinary Sciences

Comparison of microscopic adsorption characteristics of Zn(II), Pb(II), and Cu(II) on kaolinite

Li Tian et al.

Summary: In this research, the adsorption of copper, lead, and zinc ions on kaolinite was investigated through experiments and calculations. The results showed that kaolinite has a strong adsorption capacity for these ions. The adsorption process was characterized using various techniques. This study is important for understanding the adsorption properties of kaolinite and optimizing adsorbent materials for water treatment and soil remediation.

SCIENTIFIC REPORTS (2022)

Review Engineering, Environmental

Recent advances in selective separation technologies of rare earth elements: a review

Ziying Chen et al.

Summary: With the rapid development of the rare earth industry, the demand for rare earth elements continues to rise, making high-purity separation of rare earth elements particularly important. The article summarizes the latest developments and advantages and disadvantages of rare earth element separation technologies, and looks ahead to future prospects.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

Article Nanoscience & Nanotechnology

Critical Rare Earth Element Recovery from Coal Ash Using Microsphere Flower Carbon

Alexander T. Brown et al.

Summary: There is a need for the development of new solid-phase adsorbents for element extraction from coal ash. High surface area carbon adsorbents are effective in adsorbing rare earth elements, and MFC-O has shown exceptional extraction capabilities for rare earth elements, thorium, and uranium. The binding properties of MFC-O make it an attractive material for selective extraction of rare earth elements from coal ash.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Geochemistry & Geophysics

Rare Earths (La, Y, and Nd) Adsorption Behaviour towards Mineral Clays and Organoclays: Monoionic and Trionic Solutions

Cinzia Cristiani et al.

Summary: This study focuses on the recovery of Rare Earth metals from end-of-life electronic equipment using two different solid sorbents, showing that the capture efficiency of the sorbents varies with different metal concentrations. The behavior of the sorbents is influenced by the physicochemical properties of the ions and ionic radius.

MINERALS (2021)

Article Engineering, Chemical

Capture Mechanism of La and Cu Ions in Mixed Solutions by Clay and Organoclay

Cinzia Cristiani et al.

Summary: This study found that there is no direct competition between Cu and La ions for capture sites in liquid phase, but rather modifications of the solution's acid-base conditions and related equilibria. Different capture mechanisms, including ion exchange and coordination of the metal by polyamine, contribute to the higher efficiency of organoclay compared to pristine clay.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Review Engineering, Chemical

Extraction and separation of heavy rare earth elements: A review

Tianchi Liu et al.

Summary: Heavy rare earth elements (HREEs) have unique physicochemical properties that are essential in high-tech components, green technologies, and material industries, but the huge demand has led to a decrease in reserves. This review discusses advanced technologies for separation and purification of HREEs, highlighting crucial scientific issues and proposing essential perspectives for future research. It aims to provide theoretical guidance for the preparation of high-purity HREEs and references for recovery from actual production.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Review Engineering, Environmental

Global E-waste management: Can WEEE make a difference? A review of e-waste trends, legislation, contemporary issues and future challenges

Olanrewaju S. Shittu et al.

Summary: The review highlights the importance of effective waste electrical and electronic equipment (WEEE) management in contributing to Sustainable Development Goals and a circular economy. It discusses current global trends in WEEE generation, legislation, and policies, as well as future scenarios. Key concerns include stockpiling of WEEE devices and challenges in regulation and enforcement. Recommendations for improving global WEEE management include incorporating circular economy principles, extending legislation, and harmonizing key terms and definitions.

WASTE MANAGEMENT (2021)

Article Chemistry, Multidisciplinary

Adsorption of Yttrium Ions on 3-Amino-5-Hydroxypyrazole Impregnated Bleaching Clay, a Novel Sorbent Material

Ahmed K. Sakr et al.

Summary: In this study, spent bleaching clay (SBC) was treated with ethyl acetate and impregnated with 3-amino-5-hydroxypyrazole (AHIBC) to serve as an economical sorbent material for the uptake of yttrium ions from aqueous solution. The adsorption process was found to follow a pseudo-second-order kinetic model and fit the Langmuir isotherm model, with Gibbs free energy indicating spontaneous adsorption and negative enthalpy values suggesting exothermic adsorption. Despite a slight decrease in desorption efficiency after eight consecutive rounds, the electrostatic interaction between metal ions and AHIBC was favorable.

APPLIED SCIENCES-BASEL (2021)

Article Environmental Studies

Sustainability and the circular economy: A theoretical approach focused on e-waste urban mining

Lucia Helena Xavier et al.

Summary: The concept of circular economy, focusing on reuse and recirculation of products and materials, has the potential to reduce demand for raw materials, minimize resource consumption, create job opportunities, and prevent negative impacts from natural resource exploitation. Urban mining techniques offer a sustainable way to manage e-waste, recover materials, reduce primary material intake, and stimulate circularity in the supply chain.

RESOURCES POLICY (2021)

Review Environmental Sciences

Recovery and recycle of wastewater contaminated with heavy metals using adsorbents incorporated from waste resources and nanomaterials-A review

S. S. Dawn et al.

Summary: Recovery and recycling of wastewater is essential due to the global need for water. The presence of heavy metals in wastewater poses serious environmental and health risks, and adsorbents, including novel nanomaterials, are effective in treating pollutants. Adsorption is a mass transfer phenomenon based on concentration gradient, separating contaminants from effluent.

CHEMOSPHERE (2021)

Review Engineering, Environmental

A critical review of the recovery of rare earth elements from wastewater by algae for resources recycling technologies

Ying Cao et al.

Summary: Rare earth elements (REEs) have become important strategic resources in the 21st century due to global supply crises caused by increasing demand in the high-tech industry. Algae-based technology is considered a promising method for recovering REEs, offering high efficiency, low cost, and wide applicability. Future studies are suggested to further develop algae-based REEs recovery technology and make it commercially viable.

RESOURCES CONSERVATION AND RECYCLING (2021)

Review Engineering, Environmental

Technological trends in heavy metals removal from industrial wastewater: A review

Rakesh Shrestha et al.

Summary: Rapid industrialization has led to heavy metal contamination in industrial wastewater, and traditional removal methods have limitations such as high sludge production and low removal efficiency. Newer, more efficient and innovative technologies are being investigated, with research evaluating the efficiency dependence on various parameters.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

Article Chemistry, Multidisciplinary

Removal and potential recovery of rare earth elements from mine water

A. Royer-Lavallee et al.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2020)

Article Environmental Sciences

Past and emerging topics related to electronic waste management: top countries, trends, and perspectives

Daniel Fernandes Andrade et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

Article Environmental Sciences

Global trends and future prospects of e-waste research: a bibliometric analysis

Ya Gao et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

Article Chemistry, Physical

Comparison of linearization methods for modeling the Langmuir adsorption isotherm

Xuan Guo et al.

JOURNAL OF MOLECULAR LIQUIDS (2019)

Article Engineering, Environmental

Enhanced lanthanum adsorption by amine modified activated carbon

Elena Maria Iannicelli-Zubiani et al.

CHEMICAL ENGINEERING JOURNAL (2018)

Review Environmental Sciences

Status of electronic waste recycling techniques: a review

Sabah M. Abdelbasir et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2018)

Review Chemistry, Physical

Adsorbents based on montmorillonite for contaminant removal from water: A review

Runliang Zhu et al.

APPLIED CLAY SCIENCE (2016)

Review Chemistry, Physical

Adsorption of rare earth metals: A review of recent literature

Ioannis Anastopoulos et al.

JOURNAL OF MOLECULAR LIQUIDS (2016)

Article Chemistry, Physical

Adsorption Isotherm, Kinetic, Thermodynamic, and Desorption Studies of Lanthanum and Dysprosium on Oxidized Multiwalled Carbon Nanotubes

Seyed Mohammad Amin Koochaki-Mohammadpour et al.

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY (2014)

Review Chemistry, Analytical

Determination of rare earth elements by spectroscopic techniques: a review

Beata Zawisza et al.

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY (2011)

Article Chemistry, Applied

Study on the adsorption of lanthanum(III) from aqueous solution by bamboo charcoal

Chen Qing

JOURNAL OF RARE EARTHS (2010)

Article Biochemistry & Molecular Biology

A scale of metal ion binding strengths correlating with ionic charge, Pauling electronegativity, toxicity, and other physiological effects

Thomas B. Kinraide et al.

JOURNAL OF INORGANIC BIOCHEMISTRY (2007)

Article Chemistry, Analytical

Adsorption of neodymium ions on activated charcoal from aqeous solutions

R Qadeer

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY (2005)