Chromium Removal from Aqueous Solution Using Natural Clinoptilolite

Water, Journal Year: 2023, Volume and Issue: 15(9), P. 1667 - 1667

Published: April 25, 2023

This work investigates the applicability of clinoptilolite, a natural zeolite, as low-cost adsorbent for removing chromium from aqueous solutions using fixed bed studies. To improve its removal performance inorganic pollutant, is pretreated with NaCl to prepare it in homoionic form Na+ before undertaking ion exchange Cr3+ solution. also evaluates if treated effluents could meet required effluent discharge standard set by legislation target pollutant. sustain cost-effectiveness wastewater treatment, spent regenerated NaOH. It was found that clinoptilolite has two-times higher Cr adsorption capacity (4.5 mg/g) than as-received (2.2 mg/g). Pretreatment enabled treat more volume (BV) (64 BV) at breakthrough point 0.5 mg/L concentration and achieve longer time (1500 min) first run, compared (32 BV; 250 min). suggests pretreatment rendered Na+. Although an initial 10 mg/L, were still unable limit less 0.05 US Environmental Protection Agency (EPA).

Language: Английский

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Recent Advances in MXenes Based Composites as Photocatalysts: Synthesis, Properties and Photocatalytic Removal of Organic Contaminants from Wastewater

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(18)

Published: July 6, 2023

Abstract MXene has indeed gained significant attention in recent years as a promising photocatalyst for various applications, including photocatalytic degradation of pollutants. possesses several unique physical and chemical properties that make it suitable such its uniform planar structure, strong metal conductivity, effective functional groups, numerous derivatives. These contribute to the excellent photodegradation performance long‐term stability exhibited by MXene‐based photocatalysts compared other photocatalysts. composites, which are formed incorporating with materials, demonstrate even better activity due their abundant active sites porous structure. One crucial factor influencing is presence groups on surface MXene. play role process overall efficiency catalyst. To provide broader understanding photocatalysts, physicochemical briefly described this review. This includes structural characteristics, electrical groups. review also investigates synthesis routes preparing MXene, both natural state composites materials. methods essential tailoring meet specific requirements. Finally, discusses future work challenges photocatalysis. field holds great promise addressing environmental concerns improving organic compounds. However, further research needed optimize methods, enhance efficiency, explore practical applications

Language: Английский

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Polyaniline-based adsorbents for water treatment: Roles of low-cost materials and 2D materials

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 478, P. 147506 - 147506

Published: Nov. 18, 2023

Access to clean water and sanitization is crucial all life on Earth, has been listed among the United Nations Sustainable Development Goals. Adsorption a simple economical technology for purification. However, conventional adsorbents, such as zeolites, biochar, activated carbon clay minerals, have some limitations, particularly their unsatisfactory adsorption efficiencies. Polyaniline (PANI), stable conducting polymer with facile synthesis, nitrogen-rich functional groups, tuneable morphology, promising candidate adsorbing various pollutants. This review attempts critically assess PANI-based adsorbents in terms of advantages, disadvantages, separation mechanisms pollutant removal. Low-cost natural waste materials, emerging ultrathin 2D nanosheets can also be adsorbents. We highlight significant roles low-cost materials well enhancing performance Combining or not only address challenges (e.g., low surface areas thus efficiencies), but employ synergistic effects these adsorptive materials. As result, hybrid enhanced functionality, improved removal performance. Finally, we offer insightful perspectives future research directions developing

Language: Английский

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Enzyme-conjugated MXene nanocomposites for biocatalysis and biosensing

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 474, P. 145020 - 145020

Published: July 25, 2023

Language: Английский

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MXenes as emerging adsorbents for removal of environmental pollutants

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169014 - 169014

Published: Nov. 30, 2023

Language: Английский

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Removal of the textile dyes by a resin adsorbent polymeric: Insight into optimization, kinetics and isotherms adsorption phenomenally

Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 161, P. 111975 - 111975

Published: Dec. 26, 2023

Language: Английский

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A review on hydrophobic electrospun nanofibers-based materials and membranes for water treatment: Challenges, outlook, and stability

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128370 - 128370

Published: June 9, 2024

Language: Английский

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Modification strategies for Ti3C2Tx MXene-based membranes to enhance nanofiltration performance: A review

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 344, P. 127219 - 127219

Published: March 24, 2024

Language: Английский

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Polymer and graphitic carbon nitride based nanohybrids for the photocatalytic degradation of pharmaceuticals in wastewater treatment – A review

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 350, P. 127768 - 127768

Published: May 1, 2024

Language: Английский

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Quantum dots as advanced nanomaterials for food quality and safety applications: A comprehensive review and future perspectives

Comprehensive Reviews in Food Science and Food Safety, Journal Year: 2024, Volume and Issue: 23(3)

Published: April 5, 2024

Abstract The importance of food quality and safety lies in ensuring the best product to meet consumer demands public health. Advanced technologies play a crucial role minimizing risk foodborne illnesses, contamination, drug residue, other potential hazards food. Significant materials technological advancements have been made throughout supply chain. Among them, quantum dots (QDs), as class advanced nanomaterials with unique physicochemical properties, are progressively demonstrating their value field safety. This review aims explore cutting‐edge research on different applications QDs safety, including encapsulation bioactive compounds, detection analytes, preservation packaging, intelligent freshness indicators. Moreover, modification strategies toxicities diverse outlined, which can affect performance hinder industry. findings suggested that mainly used analyte active/intelligent packaging. Various analytes be detected using QD‐based sensors, heavy metal ions, pesticides, antibiotics, microorganisms, additives, functional components. QD incorporation aided improving antibacterial antioxidant activities film/coatings, resulting extended shelf life for packaged Finally, perspectives critical challenges productivity, toxicity, practical application also summarized. By consolidating these essential aspects into this review, way developing high‐performance is presented researchers technologists better capitalize upon technology applications.

Language: Английский

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