Article
Engineering, Chemical
M. Chebbi, H. Lin, B. Azambre, C. Monsanglant-Louvet, B. Marcillaud, A. Roynette, D. Doizi
Summary: This paper develops new experimental methodologies to measure the BreakThrough Curves (BTC) of radioactive and stable CH3I for KI-impregnated activated carbon (AC). The results show that KI-impregnated AC has similar adsorption performance to non-impregnated AC for stable CH3127I, while AC impregnated with TEDA significantly improves the adsorption capacity. For the trapping of gamma-labelled CH3I, KI impregnation enhances the AC performance during both retention and breakthrough phases due to the promotion of isotopic exchange phenomenon.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Energy & Fuels
Sinang Choi, Sang-Sup Lee
Summary: Activated carbon injection upstream of a particulate matter control device is commonly used to control mercury in coal-fired flue gas. Nitrogen oxides and hydrogen chloride can enhance the efficiency of activated carbon for mercury removal. Among different chloride compounds impregnated on activated carbon, copper chloride impregnated activated carbon showed the highest mercury adsorption efficiency under specific conditions.
Article
Engineering, Environmental
H. Lin, M. Chebbi, C. Monsanglant-Louvet, B. Marcillaud, A. Roynette, D. Doizi, P. Parent, C. Laffon, O. Grauby, D. Ferry
Summary: This paper evaluates the performances of different commercial activated carbons towards the trapping of methyl iodide, revealing a high sensitivity of KI/AC towards water vapor and different adsorption mechanisms under varying conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Nuclear Science & Technology
Byung-Seon Choi, Seon-Byeong Kim, Jeikwon Moon, Bum-Kyung Seo
Summary: This study focuses on effectively removing radioactive iodine released from nuclear power plants under high humidity conditions. The use of impregnated activated carbons to capture radioactive methyl iodide and the introduction of new chemical agents to enhance removal efficiency were explored. Results showed that quinuclidine impregnated activated carbon exhibited a higher decontamination factor under high humid conditions.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Zobia Razzaq, Muhammad Hamayun, Shahzad Murtaza, Samia Kausar, Ataf Ali Altaf, Rizwan Ullah Khan, Tehzeen Javaid
Summary: This study investigates the use of activated carbons from virgin banana peduncle (ZR1) and iron-impregnated banana peduncle (ZR2) as adsorbents for the removal of As(V) and Cr(VI) ions from aqueous solutions. The adsorbents were characterized and the effects of various factors on metal ion adsorption were studied. The results showed that ZR1 and ZR2 had good adsorption capacities for both As(V) and Cr(VI) ions. Kinetic and thermodynamic parameters demonstrated the feasibility of the adsorption process, making ZR1 and ZR2 promising and cost-effective biosorbents for removing As(V) and Cr(VI).
Article
Environmental Sciences
Athanasia K. Tolkou, Miroslava Vaclavikova, George P. Gallios
Summary: This research focuses on removing Cr(VI) from water using modified activated carbon with a combination of iron and manganese or copper oxides. The experimental results showed that NFM material had the highest Cr(VI) removal rate (99.7%) at pH 3 with a 3-hour contact time. The maximum adsorption capacity for NFM was found to be 44.42 mg/g using the Langmuir model, and the structure of the modified adsorbents materials was studied using BET and SEM characterization techniques.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Nanoscience & Nanotechnology
Pamela Ramirez-Vidal, Rafael L. S. Canevesi, Giuseppe Sdanghi, Sebastien Schaefer, Gael Maranzana, Alain Celzard, Vanessa Fierro
Summary: This study investigated hydrogen adsorption on six commercial activated carbons under different temperature and pressure conditions. The authors found that the use of nonlocal density functional theory provided a more accurate prediction of hydrogen adsorption capacity. The relationship between hydrogen adsorption capacity and surface properties of activated carbons was established, and different parameters were identified for evaluating the best activated carbon for hydrogen storage or compression.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Emmanuel Oluwaseyi Fagbohun, Qianyu Wang, Lucas Spessato, Yuhua Zheng, Wenli Li, Abiola Ganiyat Olatoye, Yanbin Cui
Summary: The study regenerated two types of plant-based activated carbons using a green chemical mixture, resulting in increased specific surface area and carbon yield. The activated carbons showed high adsorption capacity for methyl orange.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Talhat Yaqoob, Masroor Ahmad, Amjad Farooq, Farman Ali, Yasir Faiz, Attaullah Shah, Faisal Faiz, Muhammad Asim Irshad, Naseem Irfan
Summary: Radioactive iodine can be released in both organic and inorganic forms during the normal operation and severe accident of a nuclear power plant. Methyl iodide is formed through the reaction between radioactive iodine and organic products present in the containment. Activated carbon impregnated with hexamethylenetetramine (HMTA) and triethylenediamine (TEDA) showed significant adsorption capacity for methyl iodide. TEDA-IAC was more effective at low temperatures, adsorbing up to 473 mg/g, while HMTA-IAC had a higher adsorption capacity at high temperatures due to its stability, adsorbing up to 245 mg/g of methyl iodide. The adsorption capacity of both TEDA and HMTA impregnated activated carbons improved by up to 64% and 54%, respectively, compared to raw activated carbon. The Langmuir model fitted well to the adsorption equilibrium data, and the second-order model explained the adsorption kinetics. Thermodynamic parameters confirmed the exothermic and spontaneous nature of the reaction.
DIAMOND AND RELATED MATERIALS
(2023)
Review
Environmental Sciences
Nada Abuelnoor, Ahmed AlHajaj, Maryam Khaleel, Lourdes F. Vega, Mohammad R. M. Abu-Zahra
Summary: In an effort to reduce excessive anthropogenic CO2 emissions, various CO2 capture technologies have been developed, with activated carbon being a promising option. Derived from agricultural waste and biomass, activated carbon can be enhanced for CO2 capture through different preparation methods and functionalization, making it suitable for industrial applications like wastewater treatment.
Article
Environmental Sciences
N. Magesh, A. Annam Renita, R. Siva, N. Harirajan, A. Santhosh
Summary: The study used discarded jack fruit peel as activated carbon incorporated with zinc oxide nanocomposite for effective removal of ciprofloxacin. The activated carbon prepared was characterized using various methods and the adsorption process was analyzed for correlation coefficients and equilibrium sorption. The results indicated that the zinc oxide impregnated activated carbon exhibited Freundlich isotherm and Pseudo Second order kinetics, suggesting chemisorption process.
Article
Energy & Fuels
John H. Jacobs, Nancy Chou, Kevin L. Lesage, Ye Xiao, Josephine M. Hill, Robert A. Marriott
Summary: Activated carbons have been found to possess good selective adsorption capability for removing sulfur dioxide from flue gas, especially in the presence of water. The activated carbons prepared with KOH and NaOH showcased the highest SO2 adsorption capacity under wet conditions. Additionally, the adsorption performance of all activated carbons remained unchanged after multicomponent adsorption of wet SO2.
Article
Polymer Science
Abdel-Basit Al-Odayni, Faisal S. Alsubaie, Naaser A. Y. Abdu, Haifa Masfeer Al-Kahtani, Waseem Sharaf Saeed
Summary: This study aimed to evaluate the adsorption efficiency of nitrogen-doped activated carbons with different polymeric sources (polypyrrole, polyaniline, and copolymer) in removing methyl orange as a cationic dye. The adsorbents were characterized and compared using various methods. The results showed that the adsorption capacity increased with the initial dye concentration but decreased with the adsorbent dosage. Among the samples tested, PAnAC exhibited the highest adsorption capacity due to its higher nitrogen content. The diffusion mechanism was found to be controlled by film and intraparticle diffusion. Therefore, nitrogen-doped activated carbons have the potential to convert nitrogenous waste into valuable materials.
Article
Engineering, Chemical
Karolina Kielbasa, Joanna Srenscek-Nazzal, Beata Michalkiewicz
Summary: The focus of the study was on modifying commercial activated carbons to increase their porosity and CH4 capture potential. Experimental results showed that modified activated carbons had a higher CH4 adsorption capacity at 25 degrees C and 35 bar pressure, with a good fit using the Sips equation.
Article
Green & Sustainable Science & Technology
M. Vorokhta, J. Novakova, M. Dopita, I. Khalakhan, V. Kopecky, M. Svabova
Summary: This study demonstrates that the microporosity of three-dimensionally ordered micromesoporous carbon (3DOmm) can be increased by physical activation, leading to improved CO2 capture performance. The activated 3DOmm carbon exhibits a highly porous amorphous structure with increased micropore and mesopore volumes and a higher specific surface area. Furthermore, the activated 3DOmm carbon shows excellent CO2 adsorption performance over a wide pressure range, with fast kinetics and high selectivity for CO2 over N2.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Green & Sustainable Science & Technology
Mouzaina Boutaieb, Monia Guiza, Silvia Roman, Sergio Nogales, Beatriz Ledesma, Abdelmottaleb Ouederni
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2020)
Article
Chemistry, Multidisciplinary
Aneesa J. Al-Ani, Carmelo Herdes, Chick C. Wilson, Bernardo Castro-Dominguez
CRYSTAL GROWTH & DESIGN
(2020)
Article
Green & Sustainable Science & Technology
S. Roman, B. Ledesma, A. Alvarez, C. Coronella, S. V. Qaramaleki
Article
Biochemistry & Molecular Biology
Silvia Roman, Joao Manuel Valente Nabais, Beatriz Ledesma, Carlos Laginhas, Maria-Magdalena Titirici
Article
Chemistry, Multidisciplinary
Sergio Nogales Delgado, Jose Maria Encinar Martin, Silvia Roman Suero
Summary: Universities aim to meet societal needs by training future professionals with a focus on health and safety. Specialized degrees often include risk prevention courses to prepare students for potential hazards in their field. Students conducting final projects in laboratories require specific chemical safety training to promote incident identification and safety culture.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Review
Materials Science, Multidisciplinary
Oliver Jamieson, Francesco Mecozzi, Robert D. Crapnell, William Battell, Alexander Hudson, Katarina Novakovic, Ashwin Sachdeva, Francesco Canfarotta, Carmelo Herdes, Craig E. Banks, Helena Snyder, Marloes Peeters
Summary: Antibiotic resistance is a global threat that needs urgent attention. Molecularly imprinted polymers (MIPs) are emerging as a viable alternative to antibiotics due to their low-cost, superior thermal and chemical stability, and simplified manufacturing process. There is a clear need for fast, selective, cost-effective methods to detect antibiotic residues in complex matrices.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Engineering, Environmental
M. Boutaieb, S. Roman, B. Ledesma, E. Sabio, M. Guiza, A. Ouederni
Summary: The study found that the recirculation of Processing Water can increase the yield and heating value of hydrochar, especially in cyclic runs. There was an increase in carbon content of HC, and thermal degradation peaks showed a broader temperature range decomposition during cyclic runs.
Article
Chemistry, Physical
William Battell, Gael Donval, Bernardo Castro-Dominguez, Carmelo Herdes
Summary: This study presents a computational protocol for designing imprinted polymers to target the removal of fluoxetine from wastewater, utilizing molecular models and simulation methods to study the complexation step. Molecular dynamics results are validated with experimental measurements, correlating calculated radial distribution functions and predicted hydrogen bonding with experimental imprinting factors for various functional monomers. Analysis through Kirkwood-Buff integrals reveals the role of functional monomers in the pre-polymerisation mixture, with proposed criteria for functional monomer selection based on hydrogen bonding time and KBI values.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2022)
Article
Thermodynamics
Areeb Siddiqi, Carmelo Herdes
Summary: Improving understanding and characterization of complex fluid systems is essential for integral product and process design. This study develops a coarse-grained molecular model to investigate docusate sodium-water-cyclohexane microemulsion systems. The model predictions are in good agreement with experimental data, providing molecular insights for the design of more efficient, effective, and non-toxic surfactants.
FLUID PHASE EQUILIBRIA
(2022)
Article
Engineering, Chemical
Beatriz Ledesma, Eduardo Sabio, Carmen Maria Gonzalez-Garcia, Silvia Roman, Maria Emilia Fernandez, Pablo Bonelli, Ana L. L. Cukierman
Summary: This study investigated the solvent adsorption of p-Nitrophenol (PNP) onto activated carbons for wastewater treatment. It analyzed the influence of adsorbate concentration and adsorbent size on equilibrium isotherms and removal rates, and developed efficient adsorption processes. The study examined adsorption isotherms using different models and kinetics using various kinetic models, providing insights into the adsorption mechanism and aiding the design of wastewater treatment processes. The study also observed slight differences in maximum adsorption capacity with particle size and highlighted the significance of inlet velocity and carbon mass in dynamic adsorption systems.
Article
Green & Sustainable Science & Technology
Rocio Garcia-Morato, Silvia Roman, Beatriz Ledesma, Charles Coronella
Summary: This study investigates the water saving potential of co-hydrothermal treatment (HTC) of two different biomass materials. By using the liquid product from one biomass (grass) to supply water to the other (olive stone), the water usage can be reduced. Adding additional plant material to the co-HTC process results in a more basic processing water and an increase in nitrogen content. The study demonstrates that it is possible to improve the efficiency of HTC processes by reducing water usage.
Article
Education & Educational Research
Sergio Nogales-Delgado, Jose Maria Encinar Martin, Silvia Roman Suero
Summary: This paper discusses the experience of guiding graduate students in research and preparing them for future careers. For each FDP, the expectation is to apply their work to solve practical problems through research papers or conference presentations. To achieve this goal, a personalized teaching guide is provided, tailored for a chemical engineering laboratory primarily focused on biodiesel and biolubricant production.
EDUCATION SCIENCES
(2022)
Article
Chemistry, Multidisciplinary
Jan R. Grols, Thais T. Guaraldo, Carmelo Herdes, Davide Mattia, Bernardo Castro-Dominguez
Summary: In this study, the use of porous metal oxides to promote the amorphization of APIs was proposed. Zinc oxide foams were synthesized and characterized, and used to generate amorphous paracetamol via solvent evaporation. The results indicate that the porous structure of the metal oxide foam hinders hydrogen bonding and facilitates the formation of amorphous structures.
Article
Nanoscience & Nanotechnology
Emma Daniels, Yasemin L. Mustafa, Carmelo Herdes, Hannah S. Leese
Summary: Modern reliance on technology for monitoring health has led to the development of biosensors for real-time cortisol analysis, a stress biomarker present in sweat. Studies show that the quality of imprinting in molecularly imprinted polymers for cortisol detection is impacted by the component ratio of the prepolymerization mixture, with optimal theoretical complexation achieved at a specific ratio. Experimental results demonstrate the efficacy of these systems, validating the predictive capabilities of molecular dynamics simulations.
ACS APPLIED BIO MATERIALS
(2021)
Article
Education & Educational Research
Sergio Nogales-Delgado, Silvia Roman Suero, Jose Maria Encinar Martin
EDUCATION SCIENCES
(2020)
