Advances in Chelating Resins for Adsorption of Heavy Metal Ions

Chu, Shiyu; Feng, Xiaobing; Liu, Chenchen; Wu, Hanrong; Liu, Xiaobo

doi:10.1021/acs.iecr.2c01353

Cited by 38 publications

(22 citation statements)

References 111 publications

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“…To this end, a variety of effective methods have been developed to remove heavy metal ions from water, such as chemical precipitation, ion exchange, the oxidation–reduction method, membrane separation, electrochemical and adsorption [ 18 , 19 , 20 , 21 ]. However, these methods often cause some side effects and include excessive pretreatment steps.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Removal Performances of Heavy Metal Copper (II) Ions from Aqueous Solutions Using Hydrate-Based Method

Lan

Xie

et al. 2023

Molecules

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Since heavy metal ion-contaminated water pollutionis becoming a serious threat to human and aquatic lives, new methods for highly efficient removal of heavy metal ions from wastewater are important to tackle environmental problems and sustainable development. In this work, we investigate the removal performances of heavy metal copper (II) ions from aqueous solutions using a gas hydrate-based method. Efficient removal of heavy metal copper (II) ions from wastewater via a methane hydrate process was demonstrated. The influence of the temperature, hydration time, copper (II) ions concentration, and stirring rate on the removal of heavy metal copper (II) ions were evaluated. The results suggested that a maximum of 75.8% copper (II) ions were removed from aqueous solution and obtained melted water with 70.6% yield with a temperature of −2 °C, stirring speed 800 r/min, and hydration time of 4 h with aninitial copper concentration of 100 mg/L. The initial concentration of copper (II) ions in the aqueous solution could be increased to between 100 and 500 mg/L. Meanwhile, our study also indicated that 65.6% copper (II) ions were removed from aqueous solution and the yield of melted water with 56.7%, even with the initial copper concentration of 500 mg/L. This research work demonstrates great potential for general applicability to heavy metal ion-contaminated wastewater treatment and provides a reference for the application of the gas hydrate method in separation.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Removal Performances of Heavy Metal Copper (II) Ions from Aqueous Solutions Using Hydrate-Based Method

Lan

Xie

et al. 2023

Molecules

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“…Thus, PEN owns great properties like excellent heat resistance, chemical resistance and mechanical properties, which can be widely used in petrochemical, electronic equipment, aerospace, military weapons and other fields 1–13 . Due to its controllable structure and easy preparation, amorphous PEN can be used as matrix material in separation, adsorption, electromagnetic shielding and new energy fields 10,11,14–24 . However, the processing temperature of amorphous PEN is too different from the glass transition temperature, so the processing is more difficult and the processing efficiency is low.…”

Section: Introductionmentioning

confidence: 99%

“…structure and easy preparation, amorphous PEN can be used as matrix material in separation, adsorption, electromagnetic shielding and new energy fields. 10,11,[14][15][16][17][18][19][20][21][22][23][24] However, the processing temperature of amorphous PEN is too different from the glass transition temperature, so the processing is more difficult and the processing efficiency is low. In addition to the advantages of controllable structure and easy preparation, semi-crystalline PEN also has higher heat resistance, corrosion and mechanical strength than amorphous PEN, and can be cooled quickly during molding, greatly shortening the molding time.…”

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confidence: 99%

Effect of thermal stretching on properties of poly (arylene ether nitrile)/aramid staple fiber composites

et al. 2023

J of Applied Polymer Sci

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Semi‐crystalline poly (arylene ether nitrile) (PEN) with outstanding thermal stability and mechanical properties are expected to be used in structural materials. Increasing the crystallinity of PEN helps improve the processability of the materials as well as the thermal and mechanical properties of the products. In present work, the comprehensive properties of PEN composites are improved by the introduction of aramid staple fiber combined with hot stretching method. The effects of aramid fiber content and hot stretch multiplicity on the properties of the composite were investigated. The result shows that when the mass fraction of aramid fiber (AF) powder is 0.3% (PEN/AF3), the composites have the best overall performance, including thermal and mechanical properties. In addition, when the tensile ratio was 300% (PEN/AF3‐300), the properties of the samples are greatly improved, with the crystallinity increasing to 36.1%, the thermal decomposition temperature of 5% (Td5%) increasing by 10°C, and the tensile strength increasing to 195.40 MPa, which is 87.34% higher than that of the non‐thermal tensile composites. Therefore, this work provides a technical route for the preparation of high performance semi‐crystalline PEN composites, which is beneficial for the development of PEN applications.

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“…Among them, chelating resins have been widely used due to their strong affinity and selectivity for heavy metal ions as well as their high physical and chemical stability. [34][35][36] Chelating resins have the advantage of incorporating a wide variety of ligands. The insertion of this chelating ligand allows them to be selective and efficient for the adsorption of a specific metal ion.…”

Section: Introductionmentioning

confidence: 99%

Thiourea Adsorbent for Efficient Removal of Mercury (II)

El Khoueiry,

Giusti,

Lelong

et al. 2023

ChemistrySelect

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The removal of heavy toxic metals from industrial effluents is extremely important, especially for mercury (Hg), which is classified as a highly toxic even at low concentrations. For this purpose, novel thiourea chelating resins were synthesized as sorbent for Hg (II). Six different polymers of formo‐phenolic types were characterized and evaluated for their chelating properties with respect to Hg (II) extraction. Batch adsorption studies of mercury (II) as a function of pH, initial metal ion concentration, temperature, and time showed that thiourea formo‐phenolic polymers have a good affinity for Hg removal and a high adsorption capacity. Adsorption isotherms (Langmuir and Freundlich) and kinetic models (pseudo‐first and pseudo‐second order) were used to interpret the sorption behavior of the materials. The Langmuir model yielded the best fit with a maximum adsorption capacity of 300 mg/g. Desorption studies were performed with aqueous thiourea solution and showed that the adsorbent is indeed regenerable and can be effectively used for up to three adsorption‐desorption cycles with negligible loss of performance. This study confirmed the potential of thiol‐modified formo‐phenolic resins in sorbent engineering with promising applications in the remediation of mercury‐contaminated water.

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Advances in Chelating Resins for Adsorption of Heavy Metal Ions

Cited by 38 publications

References 111 publications

Investigation on the Removal Performances of Heavy Metal Copper (II) Ions from Aqueous Solutions Using Hydrate-Based Method

Investigation on the Removal Performances of Heavy Metal Copper (II) Ions from Aqueous Solutions Using Hydrate-Based Method

Effect of thermal stretching on properties of poly (arylene ether nitrile)/aramid staple fiber composites

Thiourea Adsorbent for Efficient Removal of Mercury (II)

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