Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.7
3.5
Journals
Processes
Special Issues
Various Adsorbents for Water Purification Processes, 3rd Edition
share announcement

Various Adsorbents for Water Purification Processes, 3rd Edition

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Separation Processes".

Deadline for manuscript submissions: closed (10 April 2024) | Viewed by 1849

Special Issue Editors

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
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

Special Issue Information

Dear Colleagues,

Currently, one of the main problems of global importance is the increasing amount of pollution released into the environment due to the intensive development of industry, the use of its goods, and active human activity. Particular attention is being paid to those industries that consume considerable amounts of water in technological processes, and thus generate significant amounts of wastewater containing harmful and toxic substances that pose an immediate threat to the health and life of living organisms, including humans. Heavy metal ions, metalloids, and various types of organic compounds such as dyes, pesticides, surfactants, phenols, WWAs, and many others are particularly dangerous. Therefore, there is a need to remove them and monitor their concentration in the environment so that the permissible standards are not exceeded and to avoid legal consequences.

Adsorption or its combination with other techniques enables the effective removal, sorption, and separation of organic and inorganic impurities using various types of materials, i.e., functionalized and non-functionalized polymeric resins, carbon-type sorbents, natural and synthetic oxide materials, clay minerals and zeolites, biopolymers, biomass, low-cost adsorbents, and composite and hybrid materials. Therefore, attempts to search for effective adsorbents and assess their adsorption properties play an important role from a cognitive and application point of view.

It is our pleasure to invite you to submit to this Special Issue your research articles, review papers, and short communications discussing the recent developments in the field of the synthesis, modification, physicochemical characteristics (physicochemical parameter modifications, for example, are connected with solubility, stability, and crosslinking), and evaluation of adsorption properties of different materials to obtain adsorbents for applications in water and wastewater treatments and purification processes. The topics of the papers to be submitted to this Special Issue are defined, but not limited, by the keywords.

Dr. Anna Wołowicz
Dr. Monika Wawrzkiewicz
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. Processes is an international peer-reviewed open access monthly 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 2400 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

  • adsorbents
  • adsorption
  • environment
  • wastewaters
  • heavy metals
  • dyes
  • pesticides
  • toxic substances
  • purification
  • removal

Published Papers (2 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

27 pages, 8765 KiB  
Article
Optimized Bentonite Clay Adsorbents for Methylene Blue Removal
by Hamad Noori Hamad, Syazwani Idrus, Badronnisa Yusuf, Nur Syakina Jamali, Amimul Ahsan, Sri Suhartini and Abdul Malek Abdul Wahab
Processes 2024, 12(4), 738; https://doi.org/10.3390/pr12040738 - 05 Apr 2024
Viewed by 699
Abstract
This study addresses the urgent need for effective water treatment methods by synthesizing and characterizing activated bentonite clay (ABC) adsorbents to remove methylene blue (MB) from aqueous solutions efficiently. Conventional adsorbents often exhibit limitations in efficiency and regeneration capabilities, necessitating novel approaches to [...] Read more.
This study addresses the urgent need for effective water treatment methods by synthesizing and characterizing activated bentonite clay (ABC) adsorbents to remove methylene blue (MB) from aqueous solutions efficiently. Conventional adsorbents often exhibit limitations in efficiency and regeneration capabilities, necessitating novel approaches to water treatment. The primary objective is synthesizing and characterizing high-quality ABC adsorbents capable of effectively removing MB. The activation process was optimized, and adsorbent performance was evaluated regarding MB removal efficiency and regeneration potential. Various activation dos-ages were investigated, and comprehensive physicochemical characterization was performed using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), BET (Brunauer–Emmett–Teller) analysis, X-ray fluorescence (XRF), thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The synthesized adsorbents demonstrated exceptional MB removal efficiency (99.593%) and impressive adsorption capacity (22.131 mg/g) when activated with 16 M sodium hydroxide. The adsorption process exhibited spontaneity and exothermicity, as validated by Freundlich and second-order kinetic models. Furthermore, the adsorbents showcased successful regeneration and reusability over three cycles, highlighting their potential for long-term application in water treatment. This study significantly advances water treatment by offering a novel approach to MB removal using base-activated bentonite clay (BABC) adsorbents, contributing to the development of sustainable water treatment solutions. Full article
(This article belongs to the Special Issue Various Adsorbents for Water Purification Processes, 3rd Edition)
►▼ Show Figures

Graphical abstract

11 pages, 979 KiB  
Article
Decolorization of Lactose-6-Phosphate Solutions Using Activated Carbon
by Khalid A. Alsaleem, Ahmed R. A. Hammam and Lloyd E. Metzger
Processes 2023, 11(12), 3357; https://doi.org/10.3390/pr11123357 - 03 Dec 2023
Viewed by 916
Abstract
Sugar phosphorylation has many applications that can be used to develop dairy and food products. During the phosphorylation process, the color of the solution turns into a dark color. The dark color causes many challenges and limitations in using phosphorylation products. The dark [...] Read more.
Sugar phosphorylation has many applications that can be used to develop dairy and food products. During the phosphorylation process, the color of the solution turns into a dark color. The dark color causes many challenges and limitations in using phosphorylation products. The dark color could cause unpleasant color changes in the products, so it is important to remove that color. Activated carbon has been utilized for decades to remove the dark color and improve the appearance of solutions such as sugar syrup and wastewater. This methodology is cheap and environmentally friendly. The objectives of this study were to develop a method to phosphorylate α-lactose monohydrate and milk permeate and to remove the dark color of solutions. The compositional characteristics of the solution, such as pH, total solids, and color parameters (L*—lightness; a*—redness; and b*—yellowness), were examined at different stages (seven stages) of washing the solutions. α-lactose monohydrate and MPP solutions were diluted with distilled water with a ratio of 1:2.2. Activated carbon was mixed with the solutions and left for 5 min at room temperature. Subsequently, the solutions were filtered. These steps were repeated seven times until there was a transparent (colorless) solutions. The experiment was repeated using three different batches of lactose and milk permeate solutions. Both solutions’ pH and total solids decreased with an increase in the number of washings with activated carbon. The International Commission on Illumination (CIE) L*a*b* scale was studied. The L* of the initial solutions was lower than that of the final solutions. However, the a* and b* of the initial solutions were higher than the final solutions. The total color difference (∆E) was calculated for both solutions. ∆E decreased with an increase in the number of washings with activated carbon in both solutions. We conclude that activated carbon can be used to remove the dark color that results from the phosphorylation process. Full article
(This article belongs to the Special Issue Various Adsorbents for Water Purification Processes, 3rd Edition)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop