Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.7
4.6
Journals
Molecules
Special Issues
Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and...
molecules-logo
Submit to Special Issue Submit Abstract to Special Issue Review for Molecules Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Green Chemistry".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 6506

Special Issue Editors

Dr. Monika Wawrzkiewicz

E-Mail Website
Guest Editor
Department of Inorganic Chemistry, Institute of Chemical Science, Faculty of Chemistry, Marie Curie-Sklodowska University in Lublin, 20-031 Lublin, Poland
Interests: sorption; separation of inorganic and organic compounds; heavy metal ions; dyes; phenols; textile wastewaters treatment; chemical modification of synthetic and natural polymers; adsorbents for water treatment; hybrid materials; low-cost adsorbents; ion-exchange resins; synthetic oxide materials; photochemistry; environmental protection
Special Issues, Collections and Topics in MDPI journals
Dr. Anna Wołowicz

E-Mail Website
Guest Editor
Department of Inorganic Chemistry, Institute of Chemical Science, Faculty of Chemistry, Marie Curie-Sklodowska University, Maria Curie-Sklodowska Square 2, 20-031 Lublin, Poland
Interests: sorption; separation; removal; recovery; heavy and noble metals; dyes; phenols; textile wastewaters treatment; ion-exchange resins; synthetic oxide materials; hybrid materials; low-cost adsorbents; environmental protection
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We are pleased to announce the second edition of “Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling”.

The world's industry is faced with an increasing amount of pollution generated to the environment as a result of intensive development and human activity. Particular attention is paid to those branches of industry that use large quantities of water in technological processes, and thus generate huge amounts of wastewater containing harmful and toxic substances that pose a direct threat to human health. Therefore, waste recycling and technologies considered waste as a source of raw materials, fuels and energy are of particular importance.

We are pleased to invite you to submit scientific articles, reviews and short communications discussing the latest developments in wastewater treatment technologies (adsorption, advanced oxidation processes, coagulation, flocculation, irradiation, membrane filtration), as well as waste recycling and the recovery of valuable raw materials, such as precious metals or rare earths from spent catalysts or electronic waste.

Dr. Monika Wawrzkiewicz
Dr. Anna Wołowicz
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • emerging pollutants
  • heavy metals
  • noble metals
  • dyes
  • adsorbents
  • removal
  • recovery
  • sorption
  • pyrometallurgical process
  • hydrometallurgical process
  • leaching methods
  • spent catalyst
  • electronic waste
  • wastewater treatment
  • advanced oxidation process
  • coagulation
  • flocculation
  • irradiation
  • membrane filtratio

Published Papers (5 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

19 pages, 6400 KiB  
Article
Catalytic Ozonation of Reactive Black 5 in Aqueous Solution Using Iron-Loaded Dead Leaf Ash for Wastewater Remediation
by Latif Hussain, Farhan Javed, Muhammad Wasim Tahir, Hafiz Muhammad Shahzad Munir, Amir Ikhlaq and Anna Wołowicz
Molecules 2024, 29(4), 836; https://doi.org/10.3390/molecules29040836 - 13 Feb 2024
Viewed by 618
Abstract
In the current study, iron-loaded dead leaf ash (Fe-DLA) was used as a novel catalyst in the heterogeneous catalytic ozonation process (HCOP) for textile wastewater containing Reactive Black 5 (RB-5). The research demonstrates a significant boost in removal efficiency, reaching 98.76% with 1.0 [...] Read more.
In the current study, iron-loaded dead leaf ash (Fe-DLA) was used as a novel catalyst in the heterogeneous catalytic ozonation process (HCOP) for textile wastewater containing Reactive Black 5 (RB-5). The research demonstrates a significant boost in removal efficiency, reaching 98.76% with 1.0 g/min O3 and 0.5 g/L catalyst dose, by investigating key variables such as pH, ozone and catalyst doses, initial concentration, and the presence of scavengers in 1 L wastewater. The addition of tert-butyl alcohol (TBA) reduced RB-5 elimination, indicating the involvement of OH radicals. Catalyst reusability decreased slightly (2.05% in the second run; 4.35% in the third), which was attributed to iron leaching. A comparison of single ozonation (Fe-DLA) adsorption and catalytic ozonation processes (Fe-DLA/O3) revealed that the combined process improved dye degradation by 25%, with removal rates ranking as Fe-DLA adsorption O3 Fe-DLA/O3, with an impressive 76.44% COD removal. These results strongly support RB-5 removal using Fe-DLA and HCOP at a basic pH, highlighting the catalyst’s utility in practical wastewater treatment. Full article
(This article belongs to the Special Issue Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II)
►▼ Show Figures

Graphical abstract

26 pages, 8758 KiB  
Article
Biosorption of Pb(II) Using Natural and Treated Ardisia compressa K. Leaves: Simulation Framework Extended through the Application of Artificial Neural Network and Genetic Algorithm
by Alma Y. Vázquez-Sánchez, Eder C. Lima, Mohamed Abatal, Rasikh Tariq, Arlette A. Santiago, Ismeli Alfonso, Claudia Aguilar and América R. Vazquez-Olmos
Molecules 2023, 28(17), 6387; https://doi.org/10.3390/molecules28176387 - 31 Aug 2023
Cited by 4 | Viewed by 1587
Abstract
This study explored the effects of solution pH, biosorbent dose, contact time, and temperature on the Pb(II) biosorption process of natural and chemically treated leaves of A. compressa K. (Raw-AC and AC-OH, respectively). The results show that the surface characteristics of Raw-AC changed [...] Read more.
This study explored the effects of solution pH, biosorbent dose, contact time, and temperature on the Pb(II) biosorption process of natural and chemically treated leaves of A. compressa K. (Raw-AC and AC-OH, respectively). The results show that the surface characteristics of Raw-AC changed following alkali treatment. FT-IR analysis showed the presence of various functional groups on the surface of the biosorbent, which were binding sites for the Pb(II) biosorption. The nonlinear pseudo-second-order kinetic model was found to be the best fitted to the experimental kinetic data. Adsorption equilibrium data at pH = 2–6, biosorbents dose from 5 to 20 mg/L, and temperature from 300.15 to 333.15 K were adjusted to the Langmuir, Freundlich, and Dubinin–Radushkevich (D-R) isotherm models. The results show that the adsorption capacity was enhanced with the increase in the solution pH and diminished with the increase in the temperature and biosorbent dose. It was also found that AC-OH is more effective than Raw-AC in removing Pb(II) from aqueous solutions. This was also confirmed using artificial neural networks and genetic algorithms, where it was demonstrated that the improvement was around 57.7%. The nonlinear Langmuir isotherm model was the best fitted, and the maximum adsorption capacities of Raw-AC and AC-OH were 96 mg/g and 170 mg/g, respectively. The removal efficiency of Pb(II) was maintained approximately after three adsorption and desorption cycles using 0.5 M HCl as an eluent. This research delved into the impact of solution pH, biosorbent characteristics, and operational parameters on Pb(II) biosorption, offering valuable insights for engineering education by illustrating the practical application of fundamental chemical and kinetic principles to enhance the design and optimization of sustainable water treatment systems. Full article
(This article belongs to the Special Issue Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II)
►▼ Show Figures

Figure 1

15 pages, 1768 KiB  
Article
Utilizing Black Soldier Fly Larvae to Improve Bioconversion and Reduce Pollution: A Sustainable Method for Efficient Treatment of Mixed Wastes of Wet Distiller Grains and Livestock Manure
by Tao Li, Samiullah Khan, Mao Wei, Haiyin Li, Tingchi Wen, Jianjun Guo and Daochao Jin
Molecules 2023, 28(15), 5735; https://doi.org/10.3390/molecules28155735 - 28 Jul 2023
Cited by 1 | Viewed by 981
Abstract
Widespread environmental contamination caused by huge amounts of wastes generated by human activities has become a critical global concern that requires urgent action. The black soldier fly (BSFL) has gradually been used to treat different wastes due to high efficiency and low cost. [...] Read more.
Widespread environmental contamination caused by huge amounts of wastes generated by human activities has become a critical global concern that requires urgent action. The black soldier fly (BSFL) has gradually been used to treat different wastes due to high efficiency and low cost. However, little information is available regarding the treatment of mixed wastes by BSFLs. The impact of BSFLs on conversion of cow manure (COM) and pig manure (PM) via the incorporation of wet distiller grains (WDG) was assessed. Results demonstrate that the waste reduction rate was increased by 20% by incorporating 45% WDG to COM and PM. The bioconversion rate of BSFLs in COM and PM also increased from 1.20 ± 0.02% and 0.92 ± 0.02% to 10.54 ± 0.06% and 10.05 ± 0.11%, respectively. Total nitrogen content and δ15N/14N ratios of WDG + COM and WDG + PM were found to be significantly lower than those of COM and PM alone (p < 0.01). The organic matter changes during manure degradation were further analyzed by combing ultraviolet–visible spectrum (UV–vis) with excitation–emission matrix (EEM) spectroscopy techniques and fluorescence area integration (FRI) method. The UV–vis spectra results indicate that the addition of WDG to manures resulted in the decreased aromaticity and molecular weight of the waste. EEM spectra demonstrated that the accumulative Pi,n values of regions III and V in COM, COM + WDG, PM, and PM + WDG were 58%, 49%, 52% and 63%, respectively. These results not only provide new insights into the potential of mixed wastes for BSFL treatment but also contribute to the basis for the formulation of effective management measurements that reduce and/or reuse these wastes. Full article
(This article belongs to the Special Issue Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II)
►▼ Show Figures

Graphical abstract

12 pages, 5253 KiB  
Article
Synthesis of Iron on Carbon Foam for Use in the Removal of Phenol from Aqueous Solutions
by Siphesihle Praise-God Khumalo, David Lokhat, Chante Jasmine-Tre Anwar and Huvin Reddy
Molecules 2023, 28(3), 1272; https://doi.org/10.3390/molecules28031272 - 28 Jan 2023
Cited by 2 | Viewed by 1168
Abstract
The potential use of magnetic nanopowder for phenol adsorption mobilised on natural grain carbon foam from an aqueous solution was studied. Phenolic compounds are priority pollutants with high toxicity even at low concentrations. A magnetic nanopowder was synthesised by dissolving an iron sponge [...] Read more.
The potential use of magnetic nanopowder for phenol adsorption mobilised on natural grain carbon foam from an aqueous solution was studied. Phenolic compounds are priority pollutants with high toxicity even at low concentrations. A magnetic nanopowder was synthesised by dissolving an iron sponge in nitric acid to produce iron nitrate, which was added to a natural grain mixture with flour as the main ingredient. The synthesised carbon foam was investigated for the effects of initial concentration, time, and TEM (transmission electron microscopy) characterisation. The phenol adsorption increased as the iron content of the carbon foam and the initial concentration increased. A kinetic study showed that the phenol adsorption data adequately covered all the carbon foam samples tested using an equation corresponding to a pseudo-first order chemical reaction. The Freundlich, Langmuir, and Temkin equations were tested for modelling the adsorption isotherms at equilibrium, and it was concluded that the Temkin model fit the experimental data adequately. Due to its exceptional physical and chemical properties, carbon magnetic nanopowder is regarded as an outstanding pollutant absorber in environmental investigations. R2 values derived from the pseudo-first-order model exceed 0.99. R2 > 0.94 indicates that the Freundlich isotherm provides the best fit to the equilibrium data. Full article
(This article belongs to the Special Issue Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II)
►▼ Show Figures

Figure 1

16 pages, 4346 KiB  
Article
Application of Synthesized Vanadium–Titanium Oxide Nanocomposite to Eliminate Rhodamine-B Dye from Aqueous Medium
by Mohamed R. Elamin, Babiker Y. Abdulkhair, Nuha Y. Elamin, Khalid H. Ibnaouf, Hajo Idriss, Rafia Bakheit and Abueliz Modwi
Molecules 2023, 28(1), 176; https://doi.org/10.3390/molecules28010176 - 25 Dec 2022
Cited by 6 | Viewed by 1458
Abstract
In this study, a V@TiO2 nanocomposite is examined for its ability to eliminate carcinogenic Rhodamine (Rh-B) dye from an aqueous medium. A simple ultrasonic method was used to produce the nanosorbent. In addition, V@TiO2 was characterized using various techniques, including XRD, [...] Read more.
In this study, a V@TiO2 nanocomposite is examined for its ability to eliminate carcinogenic Rhodamine (Rh-B) dye from an aqueous medium. A simple ultrasonic method was used to produce the nanosorbent. In addition, V@TiO2 was characterized using various techniques, including XRD, HRTEM, XPS, and FTIR. Batch mode studies were used to study the removal of Rh-B dye. In the presence of pH 9, the V@TiO2 nanocomposite was able to remove Rh-B dye to its maximum extent. A correlation regression of 0.95 indicated that the Langmuir model was a better fit for dye adsorption. Moreover, the maximum adsorption capacity of the V@TiO2 nanocomposite was determined to be 158.8 mg/g. According to the thermodynamic parameters, dye adsorption followed a pseudo-first-order model. Based on the results of the study, a V@TiO2 nanocomposite can be reused for dye removal using ethanol. Full article
(This article belongs to the Special Issue Efficient Chemical Technologies and Adsorbents for Environmental Pollution Removal and Wastes Recycling II)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-5
Back to TopTop