Review
Thermodynamics
Zhiyao Yang, Kyle R. Gluesenkamp, Andrea Frazzica
Summary: This study compiles equilibrium vapor pressure properties for a wide range of liquid absorbents and solid adsorbents, represented in various functional forms. It aims to facilitate comparisons of working fluid properties, provide a quick reference to existing research, and present a framework for standardizing the reporting of vapor pressure equilibrium data for existing and future working pairs.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2021)
Article
Environmental Sciences
Prarabdh Jain, Kedar Sahoo, Lenin Mahiya, Harsh Ojha, Harshita Trivedi, Avanish Singh, Manoj Kumar
Summary: A low cost polyvinyl alcohol-glutaraldehyde cross-linked hydrogel beads were successfully used for color removal from model industrial effluent containing Congo Red dye, achieving a high adsorption capacity and showing good reusability. Adsorption analysis revealed a multi-layer adsorption and pseudo second order kinetics, with fixed bed experiments best explained by the Thomas mathematical model. The studies demonstrated that external and internal mass diffusion were no longer rate limiting factors in the experiments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Multidisciplinary Sciences
Mohamed A. A. El-Nemr, Mohamed A. A. Hassaan, Ibrahim Ashour
Summary: This study focuses on the use of self-nitrogen-doped porous activated carbon (NDAC) to eliminate Acid Yellow 36 (AY36) dye from water solutions. NDAC was prepared by mixing fish waste, sawdust, zinc chloride, and urea and subjecting them to hydrothermal and pyrolysis processes. The prepared NDAC samples were characterized, and the NDAC800 sample with the highest nitrogen content (9.85%) was selected for AY36 dye removal. The results showed that NDAC800 had an 85.86% removal efficiency and a maximum adsorption capacity of 232.56 mg/g. The adsorption mechanism was attributed to the electrostatic interaction between the dye and the charged sites on NDAC800 surface. NDAC800 proved to be an efficient and eco-friendly adsorbent for AY36 dye adsorption.
SCIENTIFIC REPORTS
(2023)
Article
Water Resources
Mohammad Jobaer Hassan, Md. Fahamidul Islam, Nahida Akter, Md. Nizam Uddin, Abrar Yasir Abir, Sami Ben Aoun, Mohammad A. Hasnat
Summary: The article discusses the selective removal of anionic organic molecules from aqueous medium using gypsum as an adsorbent. Gypsum shows strong interactions with anionic dye molecules, with better removal efficiency than activated carbon for chlorazole yellow dye. The adsorption process follows a second-order kinetic model, with a high regression coefficient (r(2) = 0.99).
APPLIED WATER SCIENCE
(2021)
Article
Polymer Science
Abdallah Tageldein Mansour, Ahmed E. Alprol, Khamael M. Abualnaja, Hossam S. El-Beltagi, Khaled M. A. Ramadan, Mohamed Ashour
Summary: The dried brown seaweed Sargassum latifolium was tested for its ability to remove toxic Methylene Blue Dye (MBD) ions from aqueous solutions and wastewater. The study investigated the effects of various experimental conditions on the adsorption process, and characterized the seaweed before and after adsorption using different techniques. The results showed that Sargassum latifolium had a high adsorption capacity for MBD, making it a promising and cost-effective method for removing dyes from aqueous solutions.
Article
Multidisciplinary Sciences
Mohaddeseh Zahmatkesh Anbarani, Aliasghar Najafpoor, Behnam Barikbin, Ziaeddin Bonyadi
Summary: This study investigated the adsorption rate of tetracycline (TTC) onto polyvinyl chloride (PVC) microplastics and studied the adsorption mechanism using isothermal, kinetic, and thermodynamic models. The highest TTC adsorption rate was found under specific conditions. The findings highlight the importance of conducting additional research and implementing measures to mitigate the detrimental effects of microplastics and organic pollutants on human health and the environment.
SCIENTIFIC REPORTS
(2023)
Article
Construction & Building Technology
Jian He, Qiong Li, Qinglin Meng, Peng Ren, Shan Li, Haotian Wu
Summary: The impact of salt on the hygroscopic properties of autoclaved aerated concrete (AAC) in marine environments was investigated. An equation to predict the equilibrium moisture content (EMC) of salt-containing materials was proposed.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Chemical
Norbert Onen Rubangakene, Ahmed Elwardany, Manabu Fujii, H. Sekiguchi, Marwa Elkady, Hassan Shokry
Summary: Smart technology-based wastewater treatment processes are essential for ensuring safe water and sanitation. This study focused on the use of biochar and nanocomposites for decontaminating water solutions, and investigated the influence of various experimental conditions on the treatment efficiency.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Biochemistry & Molecular Biology
Ivan Argatov, Johan Engblom, Vitaly Kocherbitov
Summary: In this study, a new flexible fitting model is introduced to validate the water sorption characteristics of the components in the stratum corneum. The results show that the lipids content has a negligible effect on the sorption of stratum corneum, and the overall sorption behavior can be well explained by the rule of mixtures.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
(2022)
Article
Engineering, Chemical
Andreea Bondarev, Catalina-Gabriela Gheorghe
Summary: Green technology is a technological intervention for environmental sustainability that aims to minimize pollution and use of non-renewable resources. This study investigated the ability of modified clinoptilolite as an adsorbent to remove crystal violet dye from wastewater. The results showed that modified clinoptilolite could effectively remove crystal violet dye, and the Langmuir and Temkin models were found to fit well with the experimental data.
DESALINATION AND WATER TREATMENT
(2022)
Article
Materials Science, Paper & Wood
Khairul Anwar Mohamad Said, Mohamed Afizal Mohamed Amin, Ibrahim Yakub, Md Rezaur Rahman, Ahmad Beng Hong Kueh, Sinin Hamdan, Mohammed M. Rahman
Summary: The mechanism of methylene blue adsorption on palm kernel shell-derived activated carbon was investigated. The adsorption capacity of methylene blue decreased with lower initial dye concentrations, with 100 ppm leading to approximately 10 mg/g and 50 ppm, 20 ppm, and 5 ppm resulting in lower adsorption capacities. The adsorption process involved diffusion from the bulk solution to the activated carbon via a bounding film, occupying multiple classes of active sites.
Article
Multidisciplinary Sciences
Javad Ghanbari, Akbar Mobinikhaledi
Summary: A new porous organic polymer based on triazine and cyclohexanone rings was synthesized and investigated for its adsorption performance in removing Methyl Red dye from aqueous solution. The optimized adsorption conditions were determined to be pH 4, contact time of 80 min, adsorbent dose of 8 mg, initial dye concentration of 50 mg/L, and temperature of 45 degrees C. The adsorption process followed the Langmuir isotherm and pseudo-second-order kinetic, indicating monolayer adsorption and the importance of chemical interactions in dye removal. The maximum adsorption capacity achieved was 178.57 mg/g, and the adsorption process was found to be endothermic.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Mohamad Firdaus Mohamad Yusop, Mohamad Nasran Nasehir Khan, Ridzuan Zakaria, Ahmad Zuhairi Abdullah, Mohd Azmier Ahmad
Summary: This study optimized the preparation process of teak wood-based activated carbon (TWAC) using response surface methodology (RSM), and simulated the mass transfer process with Polymath software. The optimal conditions for preparing TWAC were found, resulting in high RBBR uptake and TWAC's yield. The isotherm and kinetic studies provided insights into the adsorption behavior and mechanism of RBBR onto TWAC.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Paper & Wood
Maria Fredriksson, Markus Rueggeberg, Thomas Nord-Larsen, Greeley Beck, Emil Engelund Thybring
Summary: The moisture content of wood cell walls is determined by both environmental conditions and material characteristics of the wood. This study used data exploration to identify the important wood characteristics determining the cell wall moisture content. Chemical composition was found to be the most important predictor of the cell wall moisture content, while in the low moisture range, cellulose crystallinity and hydroxyl accessibility were important predictors, and at high moisture contents, microfibril orientation in the cell walls was important. Overall, no single wood characteristic had a major effect on the cell wall moisture content.
Article
Chemistry, Multidisciplinary
Fatima A. Adam, M. G. Ghoniem, Moussa Diawara, Seyfeddine Rahali, Babiker Y. Abdulkhair, M. R. Elamin, Mohamed Ali Ben Aissa, Mahamadou Seydou
Summary: This study fabricated novel doped MgO nanoadsorbents and characterized them. The results showed that 5% Bi2O3 doped MgO exhibited the best adsorption performance, indicating its potential application in removing IC dyes from wastewater.