Article
Environmental Sciences
Taher Selmi, Ghizlane Enaime, Aida Kesraoui, Abdelaziz Bacaoui, Mongi Seffen
Summary: This study explored the use of Agave americana fibers for the preparation of activated carbon via chemical activation with phosphoric acid, and investigated the effects of preparation conditions on the adsorption capacity towards Alpacide Yellow. The optimal conditions for enhanced properties were found to be an impregnation ratio of 40 g/1 g, impregnation time of 6 h, and carbonization temperature of 400 degrees C. Despite its lower specific surface area compared to commercial activated carbon, the prepared activated carbon exhibited higher adsorption capacity due to the presence of pores and functional groups on its surface. The adsorption process followed a fractal kinetic model, while the adsorption isotherm model was stochastic.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Abdalrahman D. Alsulaili, Abdelrahman A. Refaie, Hector A. Garcia
Summary: Agricultural wastes, like date seeds, can be used to produce activated carbon for water/wastewater treatment. This study evaluated different types of date seeds and found variations in their physical-chemical properties. KOH impregnation was found to yield better results than H3PO4 impregnation. The Khalas seed type showed the highest adsorption capacity and promising potential compared to commercial activated carbon (CAC).
Article
Energy & Fuels
Aiman Hakim Supee, Muhammad Abbas Ahmad Zaini
Summary: This study compared the physicochemical characteristics and adsorption performance of bamboo-based activated carbon produced by two methods. The effect of different pretreatment water on hydrochar properties was also studied. The results showed that acidic pretreatment water produced hydrochar with a larger surface area and better adsorption capacity. The activated bamboo-derived adsorbent exhibited higher methylene blue removal capacity compared to bamboo-activated carbon produced through direct activation.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Applied
Zhe Zhang, Lei Xu, Yani Liu, Runtian Feng, Tong Zou, Yuanshuo Zhang, Yuru Kang, Pengxin Zhou
Summary: Activated carbon synthesized from thermally activated phosphoric acid-treated mangosteen peels shows excellent adsorption performance for methylene blue through physical adsorption. The optimal preparation conditions are a 1:3 impregnation ratio, activation for 60 minutes at 450 degrees Celsius.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Environmental Sciences
Sergio Acevedo, Liliana Giraldo, Juan C. Moreno-Pirajan
Summary: This study examines the adsorption kinetics of activated carbon (AC) adsorbent materials produced from a by-product of African palm processing. The textural characteristics of the adsorbent solids were determined through N-2 physisorption, revealing BET areas between 721 and 1334 m(2)g(-1) and micropore volumes between 0.33 and 0.55 cm(3)g(-1). FTIR was used for chemical characterization, and CO2 adsorption was measured, showing values between 175 and 274 mg·g(-1). The kinetic study suggests that the intraparticle diffusion model best describes the physisorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Fella Ziane, Samira Amokrane, Ramon Murillo, Safir Ouassel, Djamel Nibou
Summary: This study examined the recovery of Cu2+ ions using activated carbon obtained from industrial polyvinyl chloride waste. The raw material was chemically treated and activated carbon was obtained through pyrolysis. The surface properties of the adsorbent were characterized using XRD, SEM, and FTIR. The adsorption experiments showed that pH, solid/liquid ratio, concentration, and temperature had an effect on the removal effectiveness. By using Box-Behnken design, the parameters were optimized. The results showed a removal percentage of 98% and a maximum adsorption capacity of 145.63 mg/g, following a pseudo-second order kinetic model.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Mohamad Razif Mohd Ramli, Noor Fazliani Shoparwe, Mohd Azmier Ahmad
Summary: In this study, a dynamic model was used to simulate and validate the adsorption of methylene blue (MB) dye by jengkol peel-based activated carbon (JPAC) in aqueous solution. The results showed that JPAC synthesized under microwave activation conditions of 400 Watt and 4 minutes achieved favorable properties for MB dye removal, with a high BET surface area and pore volume. The adsorption capacity of MB on JPAC increased as the initial concentration of MB dye increased. The calculated R-2 values indicated a good fit between the model and experimental data, and the mass transfer coefficient decreased with an increase in MB dye initial concentration.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Ali Riza Kul, Huelya Koyuncu, Aysenur Turan, Adnan Aldemir
Summary: In this study, AC obtained from apple peel was used to remove NR from aqueous solutions. The AC was characterized using BET, FTIR, XRD, and SEM/EDX analyses. Isotherm, kinetic, and thermodynamic parameters were determined and the Langmuir isotherm and PSO kinetic models showed the best fit to the experimental data. The removal percentage of NR dye reached up to 87.20% at 318 K. The research demonstrated the effectiveness of biomass-derived AC for wastewater treatment through adsorption technique.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Water Resources
Nathalia Krummenauer Haro, Ivone Vanessa Jurado Davila, Keila Guerra Pacheco Nunes, Marcela Andrea Espina de Franco, Nilson Romeu Marcilio, Liliana Amaral Feris
Summary: This work studied the removal of paracetamol through the adsorption process and determined the optimal operating conditions. The results showed that the adsorption process was favorable, spontaneous, and endothermic.
APPLIED WATER SCIENCE
(2021)
Article
Environmental Sciences
Fatemeh Sahlabadi, Mohammad Hossein Salmani, Negin Rezaeiarshad, Mohammad Hassan Ehrampoush, Mehdi Mokhtari
Summary: In this study, the application of granular activated carbon, jujube, and barberry tree stem powder for the removal of gasoline and kerosene from water was investigated. The results showed that all three adsorbents were effective in removing gasoline and kerosene. Different isotherm models were used to describe the adsorption characteristics of each adsorbent.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Engineering, Chemical
Esra Altintig, Mehtap Karakas, Nilgun Basok, Huseyin Altundag
Summary: In this study, activated carbon obtained by activating chestnut inner shells with H3PO4 was used to remove Cr(VI) from aqueous solution. The highest removal efficiency was observed at pH 2.0 and after 60 minutes of contact time. The adsorption capacity of the activated carbon was determined to be 227.27 mg/g.
DESALINATION AND WATER TREATMENT
(2021)
Article
Engineering, Environmental
Vahab Ghalehkhondabi, Alireza Fazlali, Keyhan Ketabi
Summary: The study compared the MB adsorption potential of MgO/AC with activated carbon using a sol-gel-thermal deep-coating method. Results showed that the composite material exhibited high efficiency in removing MB from dye wastewater. The optimal operational conditions led to a MB removal efficiency of 97.5% and a maximum adsorption capacity of 642.3 mg/g for MgO/AC.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Syeda Saba Fatima, Azry Borhan, Muhammad Ayoub, Noraini Abd Ghani
Summary: This study evaluated the equilibrium and kinetics properties of CO2 adsorption on two RSS-derived AC samples. The Freundlich model accurately described the experimental results, indicating a heterogeneous phase for the adsorption process. The pseudo-second order model was found to be the most suitable for both blank and IL-functionalized AC.
Article
Chemistry, Physical
Orlando F. Cruz Jr, Ignacio Campello Gomez, Manuel Martinez Escandell, Carlos R. Rambo, Joaquin Silvestre-Albero
Summary: Activated carbon-based molecular sieves show excellent performance in separation processes of CO2/CH4 mixtures, indicating potential industrial applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Mohammad Poorbaba, Mansooreh Soleimani
Summary: The extraction with an aqueous solution of EDTA is a convenient method to recover vanadium and nickel from secondary resources. This study investigated the adsorption of V-EDTA and Ni-EDTA complexes using activated carbon in single and competitive systems, revealing the competitive adsorption process with a modified pseudo-second-order kinetic model. The experimental results illustrated that the pseudo-second-order kinetic model and Freundlich and Dubinin-Radushkevich isotherms could describe the data well.
DESALINATION AND WATER TREATMENT
(2021)
Article
Environmental Sciences
Ganjar Fadillah, Tawfik A. Saleh, Hanik Munawaroh, Sayekti Wahyuningsih, Ari Handono Ramelan
Summary: The functionalized graphene oxide-ZnO (fGO/ZnO) nanoflower composites were studied as a photocatalyst for the degradation of humic acid (HA) in real samples. The fGO/ZnO nanoflower was prepared using hydrothermal methods and showed promising results in the degradation of HA. This research provides an efficient and cost-effective method for the degradation of HA in the environment, with a high efficiency achieved in the degradation of natural HA extracted from soil.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Bushra Hussain, Naeem Ahmed Qureshi, Riaz Ali Buriro, Sundus Saeed Qureshi, Ali Akbar Pirzado, Tawfik A. Saleh
Summary: The study used copula analysis to address the neglect of interdependence of temperature and precipitation variables, showing a weak positive correlation between them. Results indicated that copulas are powerful tools for modeling extreme temperature and precipitation risks, with the Gumbel copula identified as the best-fitted model for their joint distribution.
MODELING EARTH SYSTEMS AND ENVIRONMENT
(2022)
Review
Chemistry, Multidisciplinary
Babatunde Abiodun Salami, Tajudeen A. Oyehan, Abdulkadir Tanimu, Abdullahi Biodun Olabintan, Mohammed Ibrahim, Muizz O. Sanni-Anibire, Sodiq Adeyeye Nafiu, Olaniyi Arowojolu, Tawfik A. Saleh
Summary: Lithium batteries are being replaced by cement-based batteries, which offer a viable alternative due to their porous structure and microcracks that allow ionic solutions to pass through. This review focuses on the methods to design cement-based batteries for optimal performance.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Rooh Ullah, Mustafa Tuzen, Saif Ullah, Muhammad Haroon, Rozina Khattak, Tawfik A. Saleh
Summary: A series of novel mixed metal oxides (MOs) were prepared as supports for Ni/MOs using the double hydrolysis technique. The desulfurization study showed that the 10%NiZnO-Al2O3 adsorbent exhibited superior desulfurization performance with a breakthrough point of 10 ppm in model gasoline. The superior desulfurization performance was attributed to its higher Lewis and Lewis/Bronsted acid site ratio, higher surface area, larger pore size distribution, and lesser amount of inactive ZnAl2O4 spinel.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Ayman A. Alazab, Tawfik A. Saleh
Summary: An effective and low-cost method for fabricating superhydrophobic surfaces was investigated. The developed materials showed excellent water-repellency and exhibited significant oil absorption capacities, high separation efficiency, and reusability in the separation of oil-water. They also demonstrated outstanding oil selectivity in different salty waters and retained excellent separation even after 10 abrasion cycles with sandpapers. The prepared materials are promising for oil/water separation in harsh environments.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
G. A. Naikoo, H. Salim, T. Awan, I. U. Hassan, M. A. Tabook, M. Z. Pedram, M. Mustaqeem, T. A. Saleh
Summary: With the increasing consumption of fossil fuels and growing energy demands, the world is seeking more reliable, sustainable, and renewable energy sources. This article focuses on the introduction and advancement of MXenes in the field of hydrogen evolution reaction (HER) as an ideal and environmentally friendly technology known as photochemical water splitting.
MATERIALS TODAY CHEMISTRY
(2022)
Review
Chemistry, Analytical
Gowhar A. Naikoo, Fareeha Arshad, Israr U. Hassan, Fatima Ba Omar, Murtaza M. Tambuwala, Mujahid Mustaqeem, Tawfik A. Saleh
Summary: Diabetes mellitus is a rapidly rising chronic disease globally. Non-enzymatic sensors, known as fourth-generation glucose sensors, have been developed to overcome the limitations of enzymatic glucose sensors. Bimetallic nanocomposite-based sensors have gained attention due to their enhanced reproducibility and stability compared to monometallic nanomaterials.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Mohammed Al-Yaari, Tawfik A. Saleh
Summary: Polyethyleneimine-grafted graphene oxide (PEI/GO) was synthesized by using graphene, polyethyleneimine, and trimesoyl chloride. The characterization results confirm the successful synthesis of PEI/GO and its strong interaction with lead (Pb2+) ions. The isotherm study reveals the adsorption process follows the Freundlich isotherm model, with a high maximum adsorption capacity. The prepared PEI/GO adsorbent shows promise for wastewater treatment due to its fast and high uptake removal capacity for Pb2+ ions and other heavy metals.
Article
Chemistry, Physical
Tawfik A. Saleh, Mulya Muhammad Nur, Mauliady Satria, Abdulrahman A. Al-Arfaj
Summary: In this study, highly inhibitive and high-temperature-resistant shale inhibitors were developed by grafting silica nanoparticles with hyperbranched APTMS and FOTS. The modified material displayed outstanding shale inhibition properties, with a hot rolling recovery test inhibition rate of approximately 96% compared to KCl standard test. The nanocomposite inhibitor also showed a significantly higher effectiveness in preventing water expansion into the original shale in the swelling test, with an inhibition rate of around 86% compared to KCl.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Imran Khan Rind, Ahmet Sari, Mustafa Tuzen, Muhammad Farooque Lanjwani, Isa Karaman, Tawfik A. Saleh
Summary: In this study, graphene nanoplatelets (GNP) were coupled with Staphylococcus aureus (S. aureus) for the adsorption of antimony (Sb) from water. The optimum conditions for composite dosage, initial concentration, pH level, contact time, and temperature were determined. The GNP/S. aureus composite exhibited promising adsorption capacity for Sb(III) ions in wastewater.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Imran Ali, Hasan M. Khan, Muhammad Naveed Akram, Yang-Fang Chen, Mujahid Mustaqeem, Tawfik A. Saleh, Muhammad Ahmad, Imran Sadiq, Nimra Lateef
Summary: Spinel ferrites with a composition of Ca0.5Ba0.5-xZnxFe2O4 were synthesized by sol-gel autocombustion and annealed at 650℃ for 6 hours. FTIR and XRD results confirmed the spinel structure and single-phase BCC structure. The samples exhibited average crystal sizes between 41.43 and 94.05 nm, and a decrease in lattice constant a value from 8.60 angstrom to 8.54 angstrom. Various parameters were calculated, including atomic packing fraction, bulk density, D-spacing, dislocation density, number of unit cells, porosity, strain, unit cell volume, volume of particles, and X-ray density.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ayman A. Alazab, Tawfik A. Saleh
Summary: A superhydrophilic/underwater superoleophobic magnetic cellulose and acrylamide-modified polyurethane foam (Fe3O4-CE-AM@PUF) was prepared for efficient oil/water separation. The materials were characterized for their structure and morphology, showing excellent superhydrophilic/underwater superoleophobic properties. Fe3O4-CE-AM@PUF demonstrated high separation efficiency and flux for various oil-water mixtures, with the separation efficiency of n-Hexane remaining stable after 50 cycles. Its magnetic properties allowed easy removal with a magnet.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Construction & Building Technology
Intissar Ferrak, Rami K. Suleiman, Mahfoud Kadja, Mohammad Mizanur Rahman, Lina Boumediene, Fadi A. Al-Badour, Tawfik A. Saleh, Mohammed Hadj Meliani
Summary: This article investigates the hygrothermal behavior of round perforated bricks and its relationship with temperature. Experimental studies were conducted to determine various models that accurately describe the sorption isotherms and hysteresis phenomenon of the bricks. The study confirmed the significant impact of temperature on the hygrothermal behavior of the bricks, and validated the accuracy of the proposed models.
Review
Chemistry, Multidisciplinary
Tawfik A. Saleh
Summary: This review discusses the sources and strategies for minimizing anthropogenic carbon dioxide emissions, as well as technologies and materials for CO2 capture, separation, and utilization. Different methods of CO2 conversion and efficient catalysts are also discussed, along with the potential of using solar energy for CO2 photoreduction. The review classifies CO2 utilization into direct use and conversion into chemicals and energy products, and provides an overview of different catalytic systems.
Article
Thermodynamics
Ibrahim Olanrewaju Alade, Mojeed Opeyemi Oyedeji, Mohd Amiruddin Abd Rahman, Tawfik A. Saleh
Summary: This study modeled the density of nanofluids using an artificial neural network and Bayesian support vector regression. The ANN model showed a 3-fold improvement in accuracy compared to existing models.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
