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Processes
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Adsorption Kinetics and Thermodynamics: Analysis and Applications
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Adsorption Kinetics and Thermodynamics: Analysis and Applications

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

Deadline for manuscript submissions: closed (20 January 2024) | Viewed by 2201

Special Issue Editors

Prof. Dr. Chang Min Kim

E-Mail Website
Guest Editor
Department of Chemistry, Kyungpook National University, Daegu 41566, Republic of Korea
Interests: adsorption and bulk diffusion of H on ZnO surfaces; reaction of subsurface hydrogen on metal and metal oxide surface; UHV studies of atomic layer deposition; fabrication of nanosensors
Dr. Made Sucipta

E-Mail Website
Guest Editor
Study Program of Mechanical Engineering, Faculty of Engineering, University of Udayana, Denpasar, Bali 80362, Indonesia
Interests: thermofluids of energy system and material; activated carbon; energy storage; battery and fuel cells; modeling and simulation, and computational methods

Special Issue Information

Dear Colleagues,

Surface adsorption and reactions are important in many areas of science and technology. Heterogeneous catalysis is consequential on the adsorption of gas molecules, surface diffusion, rearrangement of adsorbates, and the desorption of products. The surface reaction also plays an important role in the fabrication of microelectronic devices, adsorptive removal of hazardous materials, corrosion, and tribology. It is crucial to understand adsorption kinetics and thermodynamics for the fundamental study of surface reactions.

This Special Issue on “Adsorption Kinetics and Thermodynamics: Analysis and Applications” aims to put together recent advances in adsorption science in various fields. Topics include but are not limited to:

  • Adsorption isotherms and thermodynamics in liquid and gas;
  • Modeling of adsorption kinetics of gas molecules on metal and metal oxide surfaces;
  • Diffusion of adsorbates on solid surfaces;
  • Fundamental aspects of heterogeneous catalysis;
  • Studies of the atomic layer deposition process;
  • Adsorptive removal of hazardous chemicals with porous materials.

Prof. Dr. Chang Min Kim
Dr. Made Sucipta
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

  • energy of adsorption
  • sticking probability
  • adsorption isotherms
  • heterogeneous catalysis
  • atomic layer deposition
  • adsorptive removal
  • modeling of adsorption
  • surface analysis

Published Papers (2 papers)

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Research

17 pages, 4736 KiB  
Article
Adsorption of Pesticides on Activated Carbons from Peach Stones
by Souha Harabi, Sami Guiza, Ariadna Álvarez-Montero, Almudena Gómez-Avilés, Mohamed Bagané, Carolina Belver and Jorge Bedia
Processes 2024, 12(1), 238; https://doi.org/10.3390/pr12010238 - 22 Jan 2024
Viewed by 1075
Abstract
This study analyzes the adsorption of two model pesticides, namely, 2,4-dichlorophenoxyacetic acid (2,4-D) and carbofuran on activated carbons obtained by chemical activation with phosphoric acid of peach stones. The effect of the synthesis conditions on the surface area development was analyzed. The highest [...] Read more.
This study analyzes the adsorption of two model pesticides, namely, 2,4-dichlorophenoxyacetic acid (2,4-D) and carbofuran on activated carbons obtained by chemical activation with phosphoric acid of peach stones. The effect of the synthesis conditions on the surface area development was analyzed. The highest surface area was obtained with an impregnation time of 5 h, an impregnation ratio equal to 3.5, an activation temperature of 400 °C, and 4.5 h of activation time. Under these conditions, the maximum specific surface area was equal to 1182 m2·g−1 which confirms the high porosity of the activated carbon, predominantly in the form of micropores. The surface chemistry of this activated carbon was also characterized using pH at point of zero charge, scanning electron microscopy, and Fourier transform infrared spectroscopy. Both kinetics and equilibrium adsorption tests were performed. Adsorption kinetics confirmed that 2,4-D adsorption follows a pseudo first-order adsorption kinetic model, while carbofuran adsorption is better described by a pseudo second-order one. Regarding the equilibrium adsorption, a higher adsorption capacity is obtained for 2,4-D than carbofuran (c.a. 500 and 250 mg·g−1, respectively). The analysis of the thermodynamics and characterization after use suggest a predominantly physisorption nature of the process. Full article
(This article belongs to the Special Issue Adsorption Kinetics and Thermodynamics: Analysis and Applications)
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20 pages, 6220 KiB  
Article
Synthesis, Characterization, and Performance of Nano-Metal-Oxide (Al2O3) Blended Biochar for the Removal of Iron from Contaminated Water for Enhanced Kinetic and Adsorption Studies
by Aftab Ahmad Khan, Javed Iqbal, Muhammad Tariq Bashir, Muhammad Tahir Amin, Muhammad Ali Sikandar, Muhammad Muhitur Rahman and Md. Arifuzzman
Processes 2023, 11(12), 3423; https://doi.org/10.3390/pr11123423 - 13 Dec 2023
Cited by 2 | Viewed by 763
Abstract
This paper explored synthesis, characterization, and adsorption modeling for the application of nano-metal-oxide (Al2O3) blended biochar (NMOBC) derived from date palm waste in removing iron (Fe3+) from contaminated water. The pseudo-second-order model provided a goodness-of-fit that was [...] Read more.
This paper explored synthesis, characterization, and adsorption modeling for the application of nano-metal-oxide (Al2O3) blended biochar (NMOBC) derived from date palm waste in removing iron (Fe3+) from contaminated water. The pseudo-second-order model provided a goodness-of-fit that was superior to the pseudo-first-order kinetic model based on the value of R2 with all of the initial concentrations. The Elovich kinetic model also presented a good fit, indicating that chemisorption is a predominant mechanism in the adsorption process. The Langmuir, Freundlich, Redlich-Petersons, Temkin, and Sips models provided an exclusive perspective of the adsorption dynamics based on the high value of R2. However, the Sips model suggested the best fit of all of the employed models, with the lowest RMSE value of 0.0239 mg/g and the maximum adsorption capacity of 22.680 mg/g for NMOBC. Both adsorbents were effectively regenerated and reused in multiple cycles, thus leading to sustainable practices. Numerous analytical techniques, including SEM/EDX, FTIR, and BET, were employed in characterizing the structural, morphological, and functional properties of the synthesized NMOBC and BC. Subsequently, it revealed that the adsorption process and the role of various interactions are attributed to surface area, porosity, and ion exchange. Full article
(This article belongs to the Special Issue Adsorption Kinetics and Thermodynamics: Analysis and Applications)
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