Facile fabrication of Fe3O4@Mg(OH)2 magnetic composites and their application in Cu(II) ion removal

Article Biotechnology & Applied Microbiology

Removal of Cu(II) from acid leach solution of electronic waste utilizing magnetic activated carbon derivatized with α-benzoinoxime: alternate mining source

Aamir Iqbal et al.

Summary: In this study, a selective sorbent was synthesized to purify the acid leach solution of electronic waste from Cu(II) ions. The results showed that the percent recovery increased from 89% to > 95% after the impregnation.

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY (2023)

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Article Biochemistry & Molecular Biology

Recyclable magnetic nanocomposites for efficient removal of cadmium ions from water: performance, mechanism and isotherm studies

Saad Melhi

Summary: In this study, an effective adsorbent, succinic acid functionalized Fe3O4@AMPA nanocomposite, was synthesized and used for the efficient removal of Cd(II) ions from aqueous media. Characterization of the Fe3O4@AMPA@SA nanocomposite was done using zeta potential, BET, TEM, TGA, and FTIR spectra. The batch experiment method was used to investigate the influence of pH value, initial Cd(II) concentration, adsorbent dosage, temperature, and contact time on the adsorption process. The results showed that the Fe3O4@AMPA@SA nanocomposite exhibited a maximum monolayer adsorption capacity of 265 mg g(-1) for Cd(II) ions.

ENVIRONMENTAL POLLUTANTS AND BIOAVAILABILITY (2023)

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Article Engineering, Chemical

Highly permeable positively charged nanofiltration membranes with multilayer structures for multiple heavy metal removals

Xiaoxiang Cheng et al.

Summary: By employing a chitosan interlayer-assisted low-temperature interfacial polymerization and surface grafting polyethyleneimine (CIL-IP-P) strategy, a highly permeable and positively charged nanofiltration (NF) membrane with multilayer structures was successfully prepared. The membrane exhibited improved performance by increasing hydrophilicity through the chitosan interlayer and enhancing electro-positivity and specific surface area through polyethyleneimine grafting, thereby overcoming the trade-off between rejection and permeance in conventional positively charged NF membranes.

DESALINATION (2023)

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Article Agriculture, Dairy & Animal Science

Interspecific heavy metal variations and bioaccumulation in peafowl (Pavo cristatus)

Sajida Arooj et al.

Summary: The present study aimed to biomonitor heavy metals in three selected wildlife parks of Punjab, including lead (Pb), cadmium (Cd), chromium (Cr), zinc (Zn), nickel (Ni), manganese (Mn) and cobalt (Co). The analysis of soil, water, and feed samples revealed high concentrations of heavy metals in feed samples, followed by soil and water samples at Jallo Wildlife Park and Wildlife Park Bahawalnagar. Feathers samples showed the highest levels of heavy metals concentrations at all sites. The bioaccumulation of heavy metals in the feathers of captive birds made them a good indicator for biomonitoring.

JOURNAL OF APPLIED ANIMAL RESEARCH (2023)

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Article Environmental Sciences

Recent progress in removal of heavy metals from wastewater: A comprehensive review

Yuhuan Fei et al.

Chemosphere (2023)

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Article Agricultural Engineering

Removal of heavy metals from wastewaters with biochar pyrolyzed from MgAl-layered double hydroxide-coated rice husk: Mechanism and application

Anyu Li et al.

Summary: This study synthesized a MgAl-LDH rice husk biochar composite and evaluated its performance and mechanism for removing Cd(II) and Cu(II) through adsorption experiments and models. The results showed that the composite material had high adsorption capacity and cycling ability, and the removal of heavy metals was mainly through surface precipitation and ion exchange.

BIORESOURCE TECHNOLOGY (2022)

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Article Engineering, Chemical

Porous graphene nanoplatelets encompassed with nitrogen and sulfur group for heavy metal ions removal of adsorption and desorption from single or mixed aqueous solution

Mani Sivakumar et al.

Summary: Heavy metal contamination is a significant risk to public health and urgent measures are needed to develop environmentally sustainable and technically viable solutions. In this study, an ecofriendly adsorbent was prepared using a dry ball milling method and its physicochemical properties were analyzed. The results showed that the adsorbent exhibited high heavy metal adsorption capacity and had the advantages of low cost, environmental friendliness, flexibility, and suitability for practical applications.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Metallurgy & Metallurgical Engineering

Facile fabrication of spherical flower-like Mg(OH)2 and its fast and efficient removal for heavy metal ions

Xiao-yi Shen et al.

Summary: In this study, spherical flower-like Mg(OH)2 material was successfully fabricated and its adsorption performance for heavy metal ions was evaluated. The experimental results showed that the material exhibited excellent adsorption ability for Ni2+, Cu2+, Zn2+, Pb2+, Fe3+ and Co2+ and reached equilibrium in a short time. Furthermore, the adsorption followed the Langmuir model and pseudo-second-order kinetics, suggesting chemisorption as the operative mechanism.

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA (2022)

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Article Environmental Sciences

Simultaneous catalytic ozonation degradation of metronidazole and removal of heavy metal from aqueous solution using nano-magnesium hydroxide

Qi Sun et al.

Summary: The simultaneous removal of antibiotics and heavy metals using highly active nano-Mg(OH)2 in a catalytic ozonation system has shown promising results in this study. The synthesized Mg(OH)2 nanoparticles demonstrated high efficiencies in removing both MNZ and heavy metal ions (Cu2+ and Zn2+). Various parameters such as catalyst dosage, initial concentrations, and reaction temperature can affect the efficiency of simultaneous removal.

ENVIRONMENTAL TECHNOLOGY (2021)

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Article Chemistry, Physical

Porous vaterite and cubic calcite aggregated calcium carbonate obtained from steamed ammonia liquid waste for Cu2+ heavy metal ions removal by adsorption process

Xuewen Song et al.

Summary: The study successfully prepared porous vaterite and cubic calcite aggregated CaCO3 through a precipitation method, achieving efficient removal of Cu2+ from wastewater. The adsorption kinetics and mechanism of the CaCO3 were investigated, showing high removal rate and a dual process mechanism of adsorption and ion exchange chemical precipitation.

APPLIED SURFACE SCIENCE (2021)

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Review Chemistry, Applied

Recent advances in heavy metal removal by chitosan based adsorbents

Utkarsh Upadhyay et al.

Summary: Chitosan derivatives show great potential in adsorbing heavy metal ions, with common modification methods being crosslinking and grafting. Adsorption equilibrium and kinetics can be successfully modeled using the Pseudo-second order kinetic model and Langmuir isotherm.

CARBOHYDRATE POLYMERS (2021)

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Article Chemistry, Physical

Highly efficient removal of Pb(II) and Cd(II) ions using magnesium hydroxide nanostructure prepared from seawater bittern by electrochemical method

Hanif Amrulloh et al.

Summary: Magnesium hydroxide (Mg(OH)(2)) nanostructure was successfully synthesized from seawater bittern via electrochemical method, showing high adsorption capacity for heavy metal ions and promising prospects for large-scale applications.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2021)

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Article Chemistry, Multidisciplinary

Humulus scandens-Derived Biochars for the Effective Removal of Heavy Metal Ions: Isotherm/Kinetic Study, Column Adsorption and Mechanism Investigation

Xingang Bai et al.

Summary: Humulus scandens was used as a biomass precursor to prepare biochars with high adsorption performance for heavy metal ions. The optimized biochar demonstrated excellent removal efficiency for Cu2+ and Pb2+ in simulated wastewater, with oxygen functional groups playing a dominant role in the adsorption process.

NANOMATERIALS (2021)

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Article Engineering, Environmental

Fe3O4-FeMoS4: Promise magnetite LDH-based adsorbent for simultaneous removal of Pb (II), Cd (II), and Cu (II) heavy metal ions

Elham Sadati Behbahani et al.

Summary: The study introduces a novel nanocomposite material with efficient adsorption capacity for heavy metal ions, demonstrating its superior performance through experiments and optimized parameters. The material's enhanced efficiency comes from synergistic effects and electrostatic attraction, as well as the ability for efficient regeneration and reuse.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Engineering, Environmental

Controllable synthesis of coral-like hierarchical porous magnesium hydroxide with various surface area and pore volume for lead and cadmium ion adsorption

Hu Zhu et al.

Summary: A coral-like hierarchical porous magnesium hydroxide (HPMH) with controllable nanostructure, surface area, and pore volume was successfully prepared using a simple one-step hydrothermal process. The addition of citric acid (CA) played a key role in regulating the pore structure of the HPMH products. The HPMH showed high adsorption capabilities for Pb(II) and Cd(II) ions, following a Pseudo-second-order and Langmuir adsorption mechanism, suggesting a monolayer chemical adsorption process for heavy metal ions.

JOURNAL OF HAZARDOUS MATERIALS (2021)

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Article Chemistry, Physical

Magnetic-responsive CNT/chitosan composite as stabilizer and adsorbent for organic contaminants and heavy metal removal

Jiafeng Jin et al.

Summary: A magnetic-responsive CNT/chitosan composite was prepared with impressive adsorption capacity towards organic contaminants and heavy metals, which can be conveniently collected by applying an external magnetic field. The removal of organic contaminants and heavy metals by the composite follows a pseudo-second-order kinetic model and displays great recyclability potential.

JOURNAL OF MOLECULAR LIQUIDS (2021)

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Article Materials Science, Multidisciplinary

A multifunctional Ag3PO4/Fe3O4/Diatomite composites: Photocatalysis, and sterilization

Chunyu Xiong et al.

Summary: The Ag3PO4/Fe3O4/Diatomite composites synthesized by the hydrothermal method showed excellent performance in photocatalysis, adsorption, and sterilization, with high degradation rate, adsorption capacity, and effective sterilization of Escherichia coli. Additionally, the composites were easily recycled in an external magnetic field and maintained a degradation rate above 95% after multiple cycles of photocatalysis.

MATERIALS TODAY COMMUNICATIONS (2021)

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Article Engineering, Environmental

Mussel-inspired MgAl-LDH/carbon fiber film modified by polydopamine for highly efficient removal of Pb2+

Wenwen Yang et al.

Summary: Inspired by mussel adhesion protein, a carbon paper@polydopamine@magnesium aluminum hydrotalcite (CP@PDA@MgAl-LDH) film was successfully prepared with excellent adsorption performance for toxic Pb2+. The maximum adsorption capacity reached 1223.15 mg/g and the removal efficiency remained at 98.8% after seven cycles, demonstrating great application potential in the fields of adsorption and separation. The method can be extended to prepare other LDH films, indicating its universality and versatility.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2021)

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Article Chemistry, Physical