Special Issue "Development of New Adsorbent Materials and Understanding Adsorption Mechanisms"

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

Deadline for manuscript submissions: 20 September 2022 | Viewed by 1116

Special Issue Editor

Dr. Yehya Elsayed
E-Mail Website
Guest Editor
Chair-Elect for the ACS Chapter, Department of Biology, Chemistry & Environmental Sciences ((BCE), American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
Interests: chemical characterization and health assessment of Arabian incense and alternative tobacco products such as shisha (waterpipe), e-cigarettes and Medwakh (dokha); development and modifications of activated carbon adsorbents from natural, synthetic and waste materials; air monitoring for GCC airports: sand sampling, characterization and treatment; conversion of waste material into biooil; promoting undergraduate science education and research

Special Issue Information

Dear Colleagues,

Today, we are facing increasing challenges in the field of adsorption due to the growth in the type of pollutants, government regulations to tackle lower concentrations, and application requirements for smaller footprint products. These challenges are accompanied by continuous efforts from the scientific community to develop new adsorbent materials with high efficiency, expanded capacity, and fast kinetics. Moreover, the conversion of solid wastes into innovative composite materials, including adsorbent materials, offers an excellent opportunity for their reuse as well as reduces the demand on raw materials and energy.

This Special Issue of the Separations journal is open to novel articles on the development of new adsorbent materials for various environmental, industrial, and medical applications. The developed materials may cover activated carbons, metallic organic frameworks, carbon organic frameworks, carbonized/activated waste materials, silica gel, and zeolites, among others. Understanding the mechanisms of interaction between adsorbents and adsorbates is critical and would be given high consideration.

We are happy to invite you to submit a manuscript for this Special Issue of Separations. Full research, reviews, and communication articles are all welcomed.

Dr. Yehya Elsayed
Guest Editor

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 2000 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.


  • adsorption
  • adsorbate
  • renewable
  • environment
  • waste
  • recyclable
  • mechanisms

Published Papers (1 paper)

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The Adsorption of Corn Stalk Biochar for Pb and Cd: Preparation, Characterization, and Batch Adsorption Study
Separations 2022, 9(2), 22; https://doi.org/10.3390/separations9020022 - 19 Jan 2022
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Biochar adsorption emerges as a convenient and cheap treatment technology to cope with the metal pollution in wastewater. In this study, a biochar made from corn stalks was prepared and its adsorption characteristics for two heavy metals, Pb and Cd, were investigated by [...] Read more.
Biochar adsorption emerges as a convenient and cheap treatment technology to cope with the metal pollution in wastewater. In this study, a biochar made from corn stalks was prepared and its adsorption characteristics for two heavy metals, Pb and Cd, were investigated by materials characterization and batch experiments. Biochar pyrolyzed from waste corn stalks at 400–600 °C, where biochar prepared at 600 °C (BC600) was used to perform following experiments. In materials characterization, the SEM images were initially used to reveal an obvious porous structure feature of corn stalk biochar, followed by XPS and FT-IR analyses unraveling the effects of functional groups in adsorption, especially for phenol and carboxyl groups. These functional groups provided vital adsorption sites. In batch experiment, batch experiments were conducted under different factors such as pH, temperature, and background ionic strength. The increase of pH and temperature can improve the adsorption capacity, whereas the ionic strength showed negative effects. The adsorption processes of both metals can be interpreted by fitting pseudo-first order model, as indicated in kinetic experiments, and the adsorption isotherm can be well described by the Langmuir model. Overall, this study revealed the characteristics of corn stalk biochar and deciphered the potential adsorption mechanisms. Full article
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Evaluation of Modified Desert Sand Particles for Lead and Methylene Blue removal from Water Bodies
Authors: Yehya Elsayeda; Dana Abouelnasrb; Taraneh Taghaddosia; Sofian Kanana
Affiliation: a Department of Biology, Chemistry, and Environmental Sciences, American University of Sharjah, P. O. Box 26666, Sharjah, UAE. b Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30322
Abstract: Desert cover major areas in the Gulf region with massive amount of non-utilized sand present in the environment. There is a need to characterize sand particles in order to understand their potential applications along with their impact on humans and the environment. Anthropogenic activities cause the emission of heavy metals, volatile organic compounds (VOC’s), and other pollutants to the environment; hence, sand may act as good adsorbing material due to its direct contact with these pollutants. This paper provides structural and chemical analysis of sand particles in the region and present an acid treatment method to clean the surface of sand particles, which would then allow their use in various environmental applications. Acid treatment for sand particles resulted in increasing the¬¬¬¬ surface area. This increase i¬¬n the surface area is associated to the removal of the carbonates from the surface as confirmed by TGA, EDS, and ICP analyses. Adsorption isotherms of heavy metal such as lead and model organic compound methylene blue on treated sand particles have shown potential ability for environmental applications with maximum adsorption capacities for lead and methylene blue from water bodies reached 10 mg/g and 2.9 mg/g, respectively. Keywords: sand; modification, characterization, adsorption; pollutants

Title: Activated Carbon Surface Properties and Gas Phase Filter Performance

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