Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
2.5
2.6
Journals
Separations
Special Issues
Research on Adsorption and Purification Technology of Water and Air...
share announcement

Research on Adsorption and Purification Technology of Water and Air Pollution

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Environmental Separations".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 2857

Special Issue Editors

Prof. Dr. Xiyan Xu

E-Mail Website
Guest Editor
School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, China
Interests: adsorptive catalytic oxidation water/gas treatment; radioactive waste treatment and resource recovery; intelligent chemical industry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Tao Duan

E-Mail Website
Guest Editor
National Co-Innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, China
Interests: nuclear waste treatment and disposal (ceramic solidified nuclides, nuclide enrichment and separation, photocatalytic treatment of organic nuclear waste liquid, etc.)
Prof. Dr. Dongxiang Zhang

E-Mail Website
Guest Editor
College of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China
Interests: separation process and equipment for water/gas treatment; industrial ecological technology
Prof. Dr. Anwei Chen

E-Mail Website
Guest Editor
College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
Interests: wastewater treatment; adsorption; heay metals; chitosan; environmental functional materials; environmnet remediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

With the development of the economy and the continuous growth of the population, energy consumption and the production of consumer goods are increasing, followed by worsening air and water pollution. In the foreseeable future, nuclear energy will still be a low-carbon alternative to traditional mineral energy, but there will still be waste water and waste gas generated in the nuclear energy production process. In order to solve industrial pollution problems including nuclear energy, oil, medicine, etc., and eliminate their negative impact on urban and rural water bodies and atmospheric environment, scholars around the world have developed a large number of efficient water treatment and air pollution control technologies and systems based on adsorption or advanced oxidation processes.

This Special Issue aims to collect the latest technologies of adsorption and purification techniques related to water pollution and air pollution treatment and control. We look forward to receiving your contributions from all over the world.

Prof. Dr. Xiyan Xu
Prof. Dr. Tao Duan
Prof. Dr. Dongxiang Zhang
Prof. Dr. Anwei Chen
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. Separations 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 2600 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

  • adsorption
  • advanced oxidation
  • air pollution
  • water pollution
  • radioactive wastewater and air

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

15 pages, 4390 KiB  
Article
Biomass Zilla spinosa Fruit Functionnalized Polyethyleneimine Polymer: Analysis and Application for the Elimination of Calmagite in Water
by Mahjoub Jabli, Arwa Elaissi and Afnan Altwala
Separations 2023, 10(5), 296; https://doi.org/10.3390/separations10050296 - 06 May 2023
Cited by 1 | Viewed by 1008
Abstract
The valorization of natural polymeric substrates has increased due to their uses and applications in several fields. The existence of many functional groups in their chemical structures allows them to be easily subjected to chemical modifications. This work focuses on the exploration of [...] Read more.
The valorization of natural polymeric substrates has increased due to their uses and applications in several fields. The existence of many functional groups in their chemical structures allows them to be easily subjected to chemical modifications. This work focuses on the exploration of a new low-cost and abundant cellulosic biomass, Zilla spinosa fruit. The biomaterial was functionnalized with polyethyleneimine (1%, 3%, 5%, and 8%) in order to impart new reactive sites on its surface. The virgin and functionnalized biomaterials were analysed using several analytical methods; X-ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared (FT-IR), Scanning Electron Microscopy (SEM), and Thermogravimetric analysis (TGA). XPS spectrum of Zilla spinosa-polyethyleneimine exhibited the appearance of a new peak at 399 eV, which corresponds to N1s (5.07%). The adsorption characteristics of the prepared adsorbents were evaluated toward calmagite, an azoic and anionic dye. The adsorption capacity of Zilla spinosa-polyethyleneimine (5%) reached 114 mg/g at pH = 5, T = 20 °C, and time = 60 min conditions; though, it does not exceed 8.4 mg/g for the virgin Zilla spinosa under the same experimental conditions. The kinetic data followed both pseudo-first-order and pseudo-second-order kinetic equations suggesting a physicochemical process. The adsorption mechanism was found to be exothermic and non-spontaneous. Overall, Zilla spinosa-polyethyleneimine has demonstrated a high adsorption level which could be considered a promising candidate to remove synthetic dye molecules from contaminated water. Full article
(This article belongs to the Special Issue Research on Adsorption and Purification Technology of Water and Air Pollution)
►▼ Show Figures

Figure 1

14 pages, 2830 KiB  
Article
Influence of Chemical Pretreatment on the Adsorption of N2 and O2 in Ca-Clinoptilolite
by Miguel Ángel Hernández, Gabriela I. Hernández, Roberto Ignacio Portillo, Ma de los Ángeles Velasco, Juana Deisy Santamaría-Juárez, Efraín Rubio and Vitalii Petranovskii
Separations 2023, 10(2), 130; https://doi.org/10.3390/separations10020130 - 15 Feb 2023
Cited by 1 | Viewed by 1391
Abstract
N2 and O2 adsorption isotherms in chemically modified clinoptilolite-Ca zeolites were experimentally estimated by inverse adsorption chromatography. Natural zeolites (CLINA) were chemically treated with HCl at different concentrations (H1-H4). The adsorption of N2 and O2 on these zeolites was [...] Read more.
N2 and O2 adsorption isotherms in chemically modified clinoptilolite-Ca zeolites were experimentally estimated by inverse adsorption chromatography. Natural zeolites (CLINA) were chemically treated with HCl at different concentrations (H1-H4). The adsorption of N2 and O2 on these zeolites was studied in the temperature zone of 398–498 K using gas chromatography. This technique used a thermal-conductivity detector and He as carrier gas, at a rate of 30 mL min−1. The Langmuir and Henry equations were used to describe the experimental results of these gases’ adsorption. To evaluate the selectivity of the components of atmospheric air, the chemical activation of the zeolite clinoptilolite-Ca has been carried out. The results are attractive because of the ability to separate the gases these nanomaterials present under dynamic conditions. The structural modifications of the crystalline phases of the studied zeolites were carried out through X-ray diffraction, where the average crystal size was evaluated with the Scherrer equation, finding values of 25.86 nm for CLINA and 15.12 nm for H3 zeolites. The variation of their chemical composition was carried out by energy-dispersive EDS, while the adsorption of N2 carried out their texture properties at 77 K. The selectivity coefficients (α) were evaluated for these gases in pure form and in a mixture (atmospheric air), finding the highest values in zeolites H4 and H3. The interaction energies between these gases with the porous structures of the studied zeolites were evaluated from the evolution of the isosteric enthalpies of adsorption through the Clausius–Clapeyron equation. Full article
(This article belongs to the Special Issue Research on Adsorption and Purification Technology of Water and Air Pollution)
►▼ 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