Review
Chemistry, Analytical
Samin Hamidi, Arezou Taghvimi, Negin Mazouchi
Summary: Metal organic frameworks (MOFs) are metal clusters characterized by high surface area, commutable structure and pore size, chemical and thermal stability, widely used in various scientific fields. They are good candidates for designing novel adsorbents for sample preparation methods, especially for extraction of environmental, food, and biological samples.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Thakshila N. Dharmapriya, Ding-Yang Lee, Po-Jung Huang
Summary: A novel ATU-PEGDA hydrogel was synthesized through photo-reaction for efficient recycling of heavy metals Ag(I) and Pd(II) from electrolytic wastewater, demonstrating high selectivity and regenerative capability.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Analytical
Muhammad Sajid
Summary: The development of greener and more efficient materials for extracting environmental contaminants is a growing area of research. Chitosan, enriched with amino and hydroxyl groups, is a non-toxic biopolymer that can be used for extracting pollutants and functionalizing with other materials. This review provides an overview of the applications of chitosan-based sorbents in analytical extractions and water treatment.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Xiaoyan Cui, Yujiao Wang, Yumei Yan, Zilin Meng, Runhua Lu, Haixiang Gao, Canping Pan, Xinlin Wei, Wenfeng Zhou
Summary: A 4-formylphenylboronic acid-modified cross-linked chitosan magnetic nanoparticle was successfully fabricated and utilized for the enrichment of benzoylurea pesticides. The synthesized material showed efficient extraction, requiring less adsorbent and shorter extraction time, along with good reusability. The method demonstrated satisfactory recoveries and acceptable detection limits when applied to tea samples from various categories, indicating its potential for quantitative pesticide detection in complex matrices.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Chemistry, Physical
Alberto Pardo, Beatriz Pelaz, Pablo del Pino, Abeer Al-Modlej, Adriana Cambon, Brenda Velasco, Raquel Dominguez-Gonzalez, Antonio Moreda-Pineiro, Pilar Bermejo-Barrera, Silvia Barbosa, Pablo Taboada
Summary: By controlling the synthetic procedures, 8.50 nm iron oxide-based MNPs with high specific surface areas were prepared for efficient adsorption of heavy metals. The MNPs exhibited high adsorption values for arsenic oxide and mercury oxide in aqueous solutions, with the adsorption influenced by the pH of the pollutant solutions. The adsorption data followed Langmuir-type behavior and kinetics experiments showed chemisorption processes for pollutant ions onto the MNPs surfaces.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Multidisciplinary
Dongdong Liu, Zhengkai Hao, Dengqian Chen, Lipeng Jiang, Tianqi Li, Bing Tian, Cuiping Yan, Yuan Luo, Guang Chen, Hongfu Ai
Summary: In this study, Ca-modified biochar adsorbents (CEA) were prepared using eggshell and Eupatorium adenophorum. The CEA-2 sample prepared with a 1:2 mass ratio showed a maximum Pb adsorption capacity and exhibited monolayer adsorption characteristics, mainly through chemical precipitation mechanism.
Article
Chemistry, Physical
Safa Benjedim, Luis A. Romero-Cano, Hesham Hamad, Esther Bailon-Garcia, Vaclav Slovak, Francisco Carrasco-Marin, Agustin F. Perez-Cadenas
Summary: Two alternative synthesis routes of magnetic adsorbents were evaluated for Pb(II) and Cd(II) removal, resulting in Fe3O4+C and CoFe2O4+C with high adsorption capacities. The interaction between -FeOH groups and cations in the solution played a key role in adsorption, maintaining high capacities even after regeneration cycles with HNO3. These new materials show promising potential for large-scale wastewater treatment processes.
Article
Chemistry, Physical
Yuntong Chu, Lin Liu, Deqiang Chen, Tingting Yang, Siyu Ni, Guang Yang, Huali Nie
Summary: The use of self-supporting crumpled graphene balls as stable and reusable adsorbents for solid-phase extraction (SPE) showed superior recovery and adsorption capacity compared to other common SPE adsorbents. The unique chemical structure of crumpled graphene balls with wrinkles and ridges contributes to their remarkable stability and reusability, making them suitable for protein enrichment and desalination applications.
Article
Chemistry, Multidisciplinary
Leila Azaryouh, Hajar Abara, Zineb Kassab, El-houssaine Ablouh, Adil Aboulkas, Mounir El Achaby, Khalid Draoui
Summary: The current study synthesized carbonaceous composites from CMF extracted from Alfa fibers and Moroccan clay ghassoul for heavy metal removal from wastewater. The synthesized carbonaceous ghassoul material was characterized and used as an adsorbent for cadmium removal. The adsorption equilibrium was reached within 60 minutes, and the maximum adsorption capacity for ca-Gh was found to be 261.9 mg g(-1). Thermodynamic tests showed that the adsorption of Cd2+ onto the investigated material is spontaneous and endothermic.
Article
Engineering, Environmental
Ling-Xi Zhao, Hua Xiao, Ming-Hui Li, Meng Xie, Na Li, Ru-Song Zhao
Summary: The magnetic layered double hydroxide-based materials (MLDHs) with the metal composition of Mg(II)Al(III) were synthesized under different conditions as an adsorbent for removing the phytohormone IBA. The study found that MLDH-1 synthesized with ammonia as the base source had the best adsorption capacity, following a spontaneous and exothermic process involving surface adsorption and interlayer anion exchange as the main pathways.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Environmental Sciences
Aiming Wu, Xiaoli Zhao, Junyu Wang, Zhi Tang, Tianhui Zhao, Lin Niu, Wendiang Yu, Chunyan Yang, Mengyuan Fang, Hongzhou Lv, Shasha Liu, Fengchang Wu
Summary: This review discusses the application of solid-phase extraction based on functionalized magnetic nanoparticle adsorbents for the detection of trace persistent organic pollutants in environmental water from 2015 to 2019, as well as the synthetic routes, characteristics of modification materials, selective sorption mechanisms, and analytical performance of these adsorbents. The properties of environmental water samples have complex effects on the extraction efficiency of POPs, and improvements in magnetic solid-phase extraction for POP analysis should focus on novel applicable functionalized MNP adsorbents, suitable detection techniques, combination of other extraction techniques, and automation of MSPE.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Review
Chemistry, Physical
Yao Chen, Qianyu Qiao, Jiazhen Cao, Hexing Li, Zhenfeng Bian
Summary: As non-renewable resources, the demand for precious metals (PMs) is increasing, leading to a growing focus on the recovery of secondary resources. However, the chemical stability of PMs makes recovery conditions harsher and poses serious safety concerns. This article discusses research progress on PM recovery strategies, challenges, and future prospects.
Review
Chemistry, Applied
Chukwunonso P. Okoli, Harshadrai M. Rawel, Andreas Taubert, Timothy L. Easun, Emmanuel I. Unuabonah, Damilare Olorunnisola, Chidinma G. Olorunnisola, Oluwaferanmi B. Otitoju
Summary: Cellulose has unique structural and physicochemical properties, making it an attractive material for adsorption of pharmaceutical residues in water. This review summarizes and compares different types of cellulose-based adsorbents and their applications, as well as the efficiency of cellulose-based adsorbents compared to other types of adsorbents. It aims to shift the focus to the application of cellulose-based adsorbents in the effective pre-concentration and quantification of pharmaceutical pollutants from water, and discusses the challenges and future perspectives in this field.
CARBOHYDRATE POLYMERS
(2023)
Article
Engineering, Environmental
Xuan Zhou, Can Jin, Guifeng Liu, Guomin Wu, Shuping Huo, Zhenwu Kong
Summary: This study demonstrates the tunable covalent binding of lignin onto amine-functionalized magnetic nanoparticles for the removal of heavy metal pollutants from wastewater. The synthesized lignin-based magnetic adsorbents showed different adsorption performance towards Pb(II) with varying ratios of AMNP/lignin. The magnetic cores in the network facilitated the fast recovery of the magnetic adsorbents after the adsorption process, with good superparamagnetic properties.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Analytical
Fabio de S. Dias, Lucilia A. Meira, Candice N. Carneiro, Lucas F. M. dos Santos, Leonardo B. Guimaraes, Nivia M. M. Coelho, Luciana M. Coelho, Vanessa N. Alves
Summary: This review provides an overview of the analytical strategies for the preconcentration of trace elements using lignocellulosic sorbents for solid-phase extraction. The use of lignocellulosic materials as sorbents has advantages such as simplicity, rapidity, minimal waste generation, and reduction of sample matrix effects. Various natural adsorbents, including agro-industrial residues and composting materials, have been investigated for the development of adsorbent materials. The presence of functional groups in lignocellulosic materials, such as lignin and cellulose, contributes to their effectiveness in preconcentration or speciation of analytes.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yujin Park, Yuik Eom, Kyoungkeun Yoo, Manis Kumar Jha
Summary: This study proposed a method to leach copper from PCBs using sulfuric acid, Cu2+, and O-2. Various process parameters were investigated to determine the optimal conditions for Cu leaching. Results showed that the leaching efficiency of Cu increased with agitation speed, temperature, O-2 flow rate, Cu2+ concentration, and decreased pulp density.
Article
Geochemistry & Geophysics
Elham Aghaei, Zexiang Wang, Bogale Tadesse, Carlito Baltazar Tabelin, Zakaria Quadir, Richard Diaz Alorro
Summary: The study shows that Fe-Al bimetallic particles exhibit high efficiency in removing potentially toxic elements from acid mine drainage, with mechanisms primarily involving electrochemical reduction and adsorption. These bimetallic particles are able to rapidly increase the solution pH and facilitate the precipitation of dissolved metals, serving as a neutralizing agent in acid mine drainage treatment systems.
Editorial Material
Geochemistry & Geophysics
Carlito Baltazar Tabelin, Kyoungkeun Yoo, Jining Li
Article
Materials Science, Multidisciplinary
Pankaj Kumar Choubey, Nityanand Singh, Rekha Panda, Rajesh Kumar Jyothi, Kyoungkeun Yoo, Ilhwan Park, Manis Kumar Jha
Summary: This study explores the recovery of rare earth metals from discarded magnets, with a process including demagnetization, pre-treatment, and hydrometallurgical processing. The results show successful recovery of Nd, Pr, and Dy, with solvent extraction achieving partial separation of REMs and Fe. However, the multistage separation required for this process may not be economically feasible.
Article
Geochemistry & Geophysics
Manis Kumar Jha, Pankaj Kumar Choubey, Om Shankar Dinkar, Rekha Panda, Rajesh Kumar Jyothi, Kyoungkeun Yoo, Ilhwan Park
Summary: A feasible hydrometallurgical process for the recovery of rare earth metals (REMs) and valuable metals from spent NiMH batteries has been developed. The process involves dissolution of REMs using sulfuric acid, selective extraction of REMs using PC88A, and selective precipitation of La. The developed process shows potential for industrial exploitation.
Article
Environmental Sciences
Casey Oliver A. Turingan, Kristina S. Cordero, Aileen L. Santos, Gillian Sue L. Tan, Carlito B. Tabelin, Richard D. Alorro, Aileen H. Orbecido
Summary: This study investigates the treatment of acid mine drainage (AMD) using waste-derived materials such as mine waste, concrete waste, and limestone. The results show that mine waste is effective in removing heavy metals and sulfates, while concrete waste significantly increases the pH of the AMD.
Article
Geosciences, Multidisciplinary
Hee-Young Shin, Soo-Chun Chae, Kyoungkeun Yoo
Summary: The mineralogy of beach sand on Jumundo island in South Korea was investigated, with ilmenite found to be the major heavy mineral. Beneficiation processes involving gravity and magnetic separation successfully concentrated the ilmenite, resulting in a final product with a high grade of 93%.
GEOSYSTEM ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Elham Aghaei, Bogale Tadesse, Carlito Baltazar Tabelin, Richard Diaz Alorro
Summary: The Fe-Al bimetallic material has shown great potential in eliminating mercury pollution from gold processing wastewaters, with a high removal efficiency achieved under varying conditions. The removal mechanism involves a redox reaction and adsorption by Fe oxy-hydroxides.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Geochemistry & Geophysics
Youngjin Ahn, Wonbeom Koo, Kyoungkeun Yoo, Richard Diaz Alorro
Summary: Carbothermic reduction-roasting tests were conducted on NCM cathode active materials with different carbon sources, followed by sulfuric acid leaching. The study found that roasting temperature, molar mixing ratio of cathode active materials and carbon sources, and type of cathode active materials all impact the leaching process. Roasting enhanced the leaching efficiency of cathode active materials, but the efficiency of Ni and Co decreased with a lower molar mixing ratio.
Article
Geochemistry & Geophysics
Kyoungkeun Yoo, Won Beom Koo, Hanggoo Kim, Sang-hun Lee
Summary: Ammonium paramolybdate tetrahydrate (APT) is produced as an intermediate product in the hydrometallurgical process of molybdenum using ammonia solution. It can be pre-dried to increase the residual ammonia content and can be utilized as a reductant. In this study, the self-reducing potential of ammonium heptamolybdate (NH4)4Mo5O17 was examined, and a maximum self-reduction degree of 18% was achieved.
Article
Geosciences, Multidisciplinary
Yoojin Lim, Jaewoo Choi, Kyoungkeun Yoo, Sang-Hun Lee
Summary: A sensing system was proposed by measuring magnetic susceptibility of magnetite to recover magnetite separately from titanium components in the vanadium-bearing titanomagnetite. The magnetic susceptibility of the mixture of magnetite and ilmenite decreased with increasing the ratio of ilmenite, while the effect of silica addition was not significant. The magnetic susceptibility decreased with increasing the distance between the magnetic susceptibility meter and the sample bed, but increased with increasing the thickness of magnetite sample bed.
GEOSYSTEM ENGINEERING
(2022)
Article
Engineering, Environmental
Sol Geo Lim, Chang Yeop Oh, Jong-Won Lee, Minjun Cha, Sun Ha Kim, Kongtae Ra, Kyoungkeun Yoo, Ji-Ho Yoon
Summary: We propose a sustainable hydrate-based desalination (HBD) technology for freshwater recovery from radioactive wastewater. The crystal structure of the CHClF2 and SF6 hydrates formed with radioactive chemicals was found to be identical to that of pure CHClF2 and SF6 hydrates. Scanning electron microscopy and temperature-dependent solid-state NMR spectroscopy confirmed that radioactive chemicals are excluded from solid gas hydrates, demonstrating the potential of HBD technology for freshwater production.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Geochemistry & Geophysics
Junnile L. Romero, Carlito Baltazar Tabelin, Ilhwan Park, Richard D. Alorro, Joshua B. Zoleta, Leaniel C. Silva, Takahiko Arima, Toshifumi Igarashi, Takunda Mhandu, Mayumi Ito, Steffen Happel, Naoki Hiroyoshi, Vannie Joy T. Resabal
Summary: Rare earth elements are crucial for green energy applications, but their extraction faces sustainability challenges due to the concentrated global supply. This study investigates a modified extraction chromatographic resin as a promising adsorbent for REE recovery, providing a potential solution for sustainable supply diversification.
