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Future Trends in Green Chemistry

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 4593

Special Issue Editor


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Guest Editor
1. Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacky University Olomouc, 783 71 Olomouc, Czech Republic
2. ORD National Risk Management Research Laboratory, U.S. Environmental Protection Agency, Cincinnati, OH 45268, USA
Interests: comprehensively broad research interests ranging from eco-friendly synthetic methods using mechanochemical mixing, photocatalysis, microwaves, ultrasound, etc.; to greener assembly of nanomaterials and sustainable appliances of magnetically retrievable nanocatalysts in benign media, preferably utilizing biomass-derived chemicals including biowaste and economic consumption of agricultural residues
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Special Issue Information

Dear Colleagues,

Current research in this area is aiming to develop emerging eco-friendly synthetic strategies for the synthesis of organic and inorganic nanomaterials via routes that use benign reagents rather than the hazardous substances conventionally used. One of the thrust areas for achieving this target is to explore the generation of chemicals from renewable biomass-derived materials and efficient catalytic processes, exploiting nano-catalysis.  Among others, the desired approach may encompass alternative activation methodology, such as mechanochemical mixing, photocatalysis, and microwave-, and ultrasonic irradiation and the deployment of nano-catalysts with magnetic core; eco-friendly applications in catalysis could be ideally addressed via magnetically recoverable and recyclable nano-catalysts for oxidation, reduction, and condensation reactions. Essentially, the contributions in this issue will follow “sustainable” principles and would strive to exploit the earth-abundant resources with sparse use of rare and expensive metals. Additionally, the strategy must follow “benign by design” principles and aim to utilize renewable and biodegradable resources wherever possible, encompassing biowaste and agricultural residues. Finally, the evaluation matrices for defining the “greenness” of a process via holistic life cycle assessment may be the inclusion of the most preferred important factors.

Prof. Dr. Rajender S. Varma
Guest Editor

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Keywords

  • greener synthesis
  • sustainable chemistry
  • alternative activation
  • eco-friendly medium
  • continuous flow processes
  • earth-abundant materials
  • biomass-derived materials
  • nano-catalysts
  • magnetic nano-catalysts
  • multi-component reactions
  • life cycle analysis

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Published Papers (1 paper)

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Research

18 pages, 2363 KiB  
Article
Zeolite Waste Characterization and Use as Low-Cost, Ecofriendly, and Sustainable Material for Malachite Green and Methylene Blue Dyes Removal: Box–Behnken Design, Kinetics, and Thermodynamics
by Ali Imessaoudene, Sabrina Cheikh, Jean-Claude Bollinger, Lazhar Belkhiri, Ammar Tiri, Abdelkrim Bouzaza, Atef El Jery, Aymen Assadi, Abdeltif Amrane and Lotfi Mouni
Appl. Sci. 2022, 12(15), 7587; https://doi.org/10.3390/app12157587 - 28 Jul 2022
Cited by 51 | Viewed by 3601
Abstract
This study investigated the potential of 4A zeolite, named4AZW in this work, generated by natural gas dehydration units as solid waste after several treatment cycles, as a low-cost adsorbent to separately remove two cationic dyes, methylene blue (MB) and malachite green (MG), from [...] Read more.
This study investigated the potential of 4A zeolite, named4AZW in this work, generated by natural gas dehydration units as solid waste after several treatment cycles, as a low-cost adsorbent to separately remove two cationic dyes, methylene blue (MB) and malachite green (MG), from an aqueous solution within a batch process. The adsorbent material was characterized by N2gas adsorption–desorption, X-ray fluorescence spectrometry, X-ray diffraction, FT-IR spectroscopy, and the determination of its cation exchange capacity and point of zero charge. The influence of key operating parameters, such as the pH, adsorbent dosage, ionic strength, contact time, initial dye concentration, and temperature, was investigated. Three independent variables acting on MB adsorption performance were selected from the Box–Behnken design (BBD) and for process modeling and optimization. An analysis of variance (ANOVA), an F-test, and p-values were used to analyze the main and interaction effects. The experimental data were satisfyingly fitted with quadratic regression with adjusted R2= 0.9961. The pseudo-second-order kinetic model described the adsorption of the dyes on 4AZW. The equilibrium data were well-fitted by the Langmuir model for each adsorption system (MB-4AZW and MG-4AZW) with maximum adsorption capacity (qmax) values of 9.95 and 45.64 mg/g, respectively, at 25 °C. Thermodynamics studies showed that both adsorption systems are spontaneous and endothermic. Full article
(This article belongs to the Special Issue Future Trends in Green Chemistry)
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