Single-Step Synthesis of Magnesium-Doped Lithium Manganese Oxide Nanosorbent and Their Polymer Composite Beads for Selective Heavy Metal Removal

Saravaia, Hitesh; Gupta, Hariom; Popat, Pooja R.; Sodha, Parthrajsinh; Kulshrestha, Vaibhav

doi:10.1021/acsami.8b17141

Cited by 26 publications

(7 citation statements)

References 71 publications

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“…In actual production, the types of heavy metal ions in wastewater are often various, so the influence of the competitive ions especially alkaline earth ions of the solution on the adsorption performance must also be investigated. , Hence, it is crucial to assess the capture tendency of PS-NSB toward the target ion in the presence of other competitive ions. The influences of divalent competitive ions on divalent copper ion removal performance of the obtained PS-NSB hybrid adsorbent were also measured, with the original PS as control.…”

Section: Resultsmentioning

confidence: 99%

Self-Assembled Naphthylidene-Containing Schiff Base Anchored Polystyrene Nanocomposites Targeted for Selective Cu(II) Ion Removal from Wastewater

et al. 2019

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Self-assembled composite adsorbents that combine the controllability of self-assembly with a mild operation process are promising for removal of heavy metal ions in wastewater. The design and preparation of functionalized composite adsorbent materials with multiple-site adsorption ability remain the most attractive in effectively removing heavy metal ions. Inspired by the macroporous structure of charged polystyrene (PS) resin and chelation of Schiff bases with heavy metal ions, smart composite adsorbents are constructed based on the combination and synergistic effect of multiple hydrophobic, π–π stacking, and electrostatic noncovalent interactions between polystyrene resin and naphthylidene-containing Schiff base (NSB). The resulting hybrid nanomaterials (PS-NSB) have uniform porous structures and well-defined and multiple target sites. These properties promote diffusion of the target ion, increase the binding site, and enhance the removal efficacy. This study offers a new strategy to harness a self-assembled Schiff base with integrated flexibility and multifunctions to enhance target metal ion specific binding and removal effects, highlighting opportunities to develop smart composite adsorbents.

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Section: Resultsmentioning

confidence: 99%

Self-Assembled Naphthylidene-Containing Schiff Base Anchored Polystyrene Nanocomposites Targeted for Selective Cu(II) Ion Removal from Wastewater

et al. 2019

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“…Low-energy consumption and easy separation strategies have been proposed by integrating magnetic metals into metal oxides. These easy separation strategies show potential for energy-efficient practical applications. , Immobilizing metal oxide NAs onto porous scaffolds such as graphene-based 3D macrostructures can avoid separation and aggregation problems, ,,,− but the real usage of this strategy may suffer from inherently limited mass transfer and prohibitive costs. These limitations represent further improvement opportunities for engineering applications.…”

Section: Metal Removal Using Different Types Of Nanomaterials Adsorbe...mentioning

confidence: 99%

Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Luo

et al. 2021

ACS EST Eng.

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Adsorption is widely applied in both potable and municipal or industrial wastewater treatments process. Nanomaterial adsorbents (NAs) have emerged as efficient candidates to remove toxic metals from water. However, scalable application of NAs beyond bench-scale material discovery and translation to full scale deployment has been limited but essential to realize the potential NAs offer for environmental remediation. In this critical review, we summarize, discuss, and compare various NA synthesis methods and assess their scalability to supply materials for full-scale applications. Moreover, as the importance of the microstructure of nanomaterial itself has been recognized in recent years, we also scrutinize the effect of NAs structures including crystal facets, phases, and tunability of active sites (e.g., functional groups) on metal adsorption. The review concludes with prioritizing research needs that balance large-scale production costs and feasibility to produce desired properties of NAs at commercial scale quantities. Meanwhile, an NAs evaluation protocol (e.g., life cycle costing (LCC) and life cycle assessment (LCA)) should be established to test NAs at the material discovery stage that considers both adsorption capacity and mass transfer kinetics and perform long-term testing (e.g., recovery) of NA real applications.

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“…Functional groups such as alcohols, esters, and ethers have great affinity for pollutants. As a result, morphological and structural properties of biopolymers and nanocomposites can change intermolecular interactions with metal ions, appropriate for water remediation. ,− …”

Section: Introductionmentioning

confidence: 99%

Polymer-Based Devices and Remediation Strategies for Emerging Contaminants in Water

Alipoori

Rouhi

Linn

et al. 2021

ACS Appl. Polym. Mater.

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The capturing of water contaminants and the remediation of water bodies is an important concern to human health due to severe side effects of contaminants on the body such as cancer. Pharmaceuticals, heavy metals, dyes, and chemical warfare agents (CWAs) are a few of the toxic pollutants that cause serious damage to the environment, humans, and animals. Meanwhile, scientists in the fields of polymer nanotechnology and nanoscience have been investigating tremendous solutions for eliminating water pollution to ensure environmental safety. Among all methods of water purification, adsorption is an important and versatile technique for remediation and has been used to remove toxic elements from water-based materials for many years. Using polymer-based materials as an adsorbent is very common to purify polluted waters. The main factors to evaluate adsorbent performance are adsorption capacity (maximum contaminant uptake by adsorbent), adsorption rate (how fast the adsorbent adsorbs contaminants), contaminant selectivity (adsorption of a specific contaminant among other ones), and adsorbent reusability (ability of adsorbent to remove contaminants in consecutive order), which are compared in this work. These factors are affected by pH, temperature, contact time, and also type, dosage, and morphology of the adsorbent. Natural and synthetic polymers in different types of films, membranes, nanocomposites, porous materials, and hydrogels with functional groups such as hydroxyl, amine, carboxyl, and amide are used as a selective material to adsorb water contaminants. Serious needs to remediate the water base from several contaminants direct the researchers to utilize polymer-based adsorbents with the ability to adsorb multiple contaminants simultaneously in the shortest possible time. This work reviews different water contaminants and their removal mechanisms and detection using nanodevices and polymer-based adsorbents.

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Single-Step Synthesis of Magnesium-Doped Lithium Manganese Oxide Nanosorbent and Their Polymer Composite Beads for Selective Heavy Metal Removal

Cited by 26 publications

References 71 publications

Self-Assembled Naphthylidene-Containing Schiff Base Anchored Polystyrene Nanocomposites Targeted for Selective Cu(II) Ion Removal from Wastewater

Self-Assembled Naphthylidene-Containing Schiff Base Anchored Polystyrene Nanocomposites Targeted for Selective Cu(II) Ion Removal from Wastewater

Review of Advances in Engineering Nanomaterial Adsorbents for Metal Removal and Recovery from Water: Synthesis and Microstructure Impacts

Polymer-Based Devices and Remediation Strategies for Emerging Contaminants in Water

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