Article
Environmental Sciences
Lina Ramirez Arenas, Philippe Le Coustumer, Stephan Ramseier Gentile, Stephane Zimmermann, Serge Stoll
Summary: The presence of nanoparticles in drinking water raises concerns about their potential risks to human health and the efficacy of water treatment plants in removing them. This study examines the efficiency of granular activated carbon (GAC) in removing CeO2 nanoparticles. The results show that GAC has a good affinity for nanoparticles, with higher adsorption capacity and removal efficiency in lake water compared to ultrapure water. The adsorption mechanism is mainly controlled by electrostatic attractions, and mass transfer processes play a role in the removal of nanoparticles in lake water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Firdevs Mert Sivri, Numan Hoda, Ayhan Topuz, Leyla Budama Akpolat, Emrah Eroglu
Summary: In this study, removal of DMDS by adsorption on activated carbon cloth was investigated successfully, with the experimental data fitting well with pseudo-second-order kinetics and Langmuir isotherm model. The calculated monolayer adsorption capacity of DMDS according to the Langmuir model was 118 mL.g(-1).
TURKISH JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Xiao-Ting Zhen, Ya-Ling Yu, Min-Zhen Shi, Si-Chen Zhu, Tian-Ci Yan, Zi-Xuan Yue, Yu-Xin Gu, Hui Zheng, Jun Cao
Summary: This study prepared Hawthorn kernel activated carbon (HKAC) using a two-step method involving carbonization and thermal activation with potassium hydroxide. The HKAC exhibited good morphological integrity and crystalline state, and had a high specific surface area and pore volume. The optimal adsorption conditions were determined to be a carbonization temperature of 550 degrees C, HKAC concentration of 0.6 g/L, solution temperature of 60 degrees C, and pH of 6.0. The experimental results showed that HKAC was a cost-effective and green adsorbent for removing water and plants contaminated with fungicides.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Chemical
Chaiyot Tangsathitkulchai, Suravit Naksusuk, Atichat Wongkoblap, Poomiwat Phadungbut, Prapassorn Borisut
Summary: The study investigated the equilibrium and kinetics of CO2 adsorption by coconut-shell activated carbon impregnated with sodium hydroxide at 273 K. The CO2 adsorption increased with NaOH loading and exhibited three distinctive regions. The results showed an empirical correlation between effective pore diffusivity, CO2 adsorption, and NaOH loading.
Article
Thermodynamics
Sai Yagnamurthy, Dibakar Rakshit, Sanjeev Jain, Kaiser Ahmed Rocky, Md. Amirul Islam, Bidyut Baran Saha
Summary: This study investigates the cooling performance of Maxsorb-III activated carbon composites synthesized with the additives of H25 Graphene nanoplatelets, 1-Hexyl-3-methylimidazolium bis(trifluormethylsulfonyl)imide ionic liquid with polyvinyl alcohol for R32 refrigerant-based adsorption cooling applications. The kinetic characteristics and heat of adsorption assessments are evaluated, and a holistic comparison of the cooling performances of the composites is proposed.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Ismaila Olalekan Saheed, Wen -Da Oh, Faiz Bukhari Mohd Suah
Summary: This study investigated the removal of hydrophilic imidazolium-based ionic liquid from aqueous solution using chitosan-activated carbon composite (CH-AC). The experimental data analyzed using Langmuir and Freundlich isotherms fitted best into Langmuir model, and the adsorption capacity of CH-AC for [BMIM][Br] was calculated to be 12.17 mg/g. Adsorption kinetics fitted into pseudo-second order model.
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
(2021)
Article
Engineering, Chemical
Michelle Finn, Gabrielle Giampietro, David Mazyck, Regina Rodriguez
Summary: This study successfully demonstrated the rapid adsorption of ibuprofen using coconut-based activated carbon, showing its potential as a point-of-entry treatment option for removing pharmaceuticals in toilets. The introduction of other compounds to the solution did not significantly impact the adsorption of ibuprofen, further supporting its application at the point-of-entry.
Article
Water Resources
Roya Askari, Faezeh Mohammadi, Amir Moharrami, Shirin Afshin, Yousef Rashtbari, Mehdi Vosoughi, Abdollah Dargahi
Summary: The potential of activated carbon made from cherry tree wood (CWAC) in the adsorption of cationic red 14 dye was investigated in this study. The removal efficiency was assessed by considering the changes in pH, concentration, adsorbent dose, contact time, and temperature. Results showed that the efficiency of the process increased with higher contact times, temperatures, and pH, and decreased with higher initial dye concentrations. Langmuir isotherm and pseudo-second-order (PSO) kinetic models were found to best describe the observed data.
APPLIED WATER SCIENCE
(2023)
Article
Energy & Fuels
Ehab S. Ali, Ahmed A. Askalany, K. Harby, Mohamed Refaat Diab, Bahgat R. M. Hussein, Ahmed S. Alsaman
Summary: This study experimentally expressed the benefits of using acid activated montmorillonite as a new adsorbent material in adsorption desalination-cooling systems. The results showed efficient adsorption characteristics and significant salt removal capabilities of acid activated montmorillonite.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Multidisciplinary
E. Garcia-Hernandez, C. G. Aguilar-Madera, E. C. Herrera-Hernandez, R. Ocampo-Perez, E. Bailon-Garcia, Farid B. Cortes
Summary: A mathematical formulation based on fundamental principles of momentum and mass transport with a kinetic adsorption model was proposed and used to interpret the adsorption rate data of phenol in a stirred tank adsorber. Results showed the importance of velocity profiles during phenol adsorption, with convective transport being more significant than diffusive transport in the solution.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Applied
Najeeb Ur Rahman, Wasim Bahadar, Sultan Alam, Muhammad Zahoor, Ivar Zekker, Farhat Ali Khan, Riaz Ullah, Essam A. Ali, H. C. Ananda Murthy
Summary: This study investigates the use of chemically modified sawdust from paper mulberry as an adsorbent for removing basic blue 3 and methylene green from water. The adsorption capacity and the effects of adsorbent dosage and temperature were evaluated. The results showed that the pseudosecond-order model provided the best fit for the kinetic data, while the Langmuir model was most suitable for explaining the isothermal data. The prepared adsorbent exhibited promising adsorption capacity and could be used for reclaiming water contaminated with other pollutants.
ADSORPTION SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Ventura Castillo Ramos, Wei Han, Xiangping Zhang, Suojiang Zhang, King Lun Yeung
Summary: Toluene is a common indoor pollutant and its removal is crucial for maintaining a healthy environment. Metal Organic Frameworks (MOFs) and Ionic Liquids (ILs) show great potential for adsorbing toluene. This study reports the synthesis and application of IL/MOF composite materials for toluene removal. The addition of [BMIM][CH3COO] ionic liquid to MIL101 porous structure significantly improves the affinity of the parent materials towards toluene capture. Improved diffusion and kinetics rates were observed in the IL/MOF composite, making the sorption process more efficient.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
P. Samiyammal, A. Kokila, L. Arul Pragasan, Rajakrishnan Rajagopal, Rengasamy Sathya, S. Ragupathy, M. Krishnakumar, Vasudeva Reddy Minnam Reddy
Summary: This study investigated the characteristics of activated carbon from cashew nut shell produced by potassium hydroxide activation at 600 degrees C in an N2 atmosphere. The sample obtained with a CNS/KOH ratio of 1:1 had the highest surface area compared to other ratio samples. The effects of contact time, pH, adsorbent dose, and initial dye concentration on brilliant green (BG) removal efficiency were studied using the CNS/KOH ratio of 1:1 sample as the adsorbent. The Langmuir isotherm provided the best fit for the experimental equilibrium data, with a maximum BG adsorption capacity of 243.90 mg/g.
ENVIRONMENTAL RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Panuwat Lawtae, Chaiyot Tangsathitkulchai
Summary: Mesoporous activated carbon produced from longan seed biomass through CO2 physical activation showed superior adsorption kinetics and capacity in removing methylene blue, with high specific surface area and pore volume. Regardless of the initial pH, the mesoporous carbon achieved a maximum adsorption capacity of 1000 mg/g.
Article
Chemistry, Multidisciplinary
Jiyun Kim, Woong Kwon, Byong Chol Bai, Euigyung Jeong
Summary: This study investigates the preparation of activated carbon fiber derived from waste cotton fabric for economical and eco-friendly recycling as well as its application to water purification. The activated carbon fiber was prepared by physical activation using steam and its adsorption property was evaluated using methylene blue. The findings suggest that activating the carbon fiber at higher temperatures leads to increased specific surface area and mesopore volume, resulting in enhanced adsorption of methylene blue. The Langmuir equation was found to be more suitable for describing the adsorption equilibrium. Additionally, the kinetics of methylene blue adsorption varied with different activation temperatures.
Article
Chemistry, Multidisciplinary
Wafa A. Bawazir, Maymoona A. Al-Mahmood, Rawan S. Almalki, Ghadi F. Alofi, Raghad S. Alharbi, Zoya Zaheer
Summary: This study investigates the interaction between sulfathiazole and three types of surfactants using UV-visible spectroscopy and conductivity measurements. The results show that the critical micelle concentration of cationic and anionic surfactants decreases with increasing sulfathiazole concentration, while the interaction with non-ionic surfactant is weak.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Musaad K. Aleid, Khalid N. Alharbi, Mona A. Aljufareen, Areej S. Aloliwi, Alhanouf K. Almutairi, Rahaf S. Alsaif, Nada K. Alshayeb, Mohammed S. Almoiqli
Summary: This study assessed the levels of trihalomethane compounds in the water network of Riyadh city and identified the factors influencing their formation. The concentrations of trihalomethane compounds were within the permissible limits, indicating the water's safety for human consumption. The presence of bromide ions, organic carbon, free chlorine, and pH values were found to affect trihalomethane formation.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Said Arhzaf, Jamal Houssaini, Mohammed Naciri Bennani, Marwa Alaqarbeh, Mohammed Bouachrine
Summary: The study shows that Mg-Al hydrotalcite catalysts intercalated with acetate and carbonate anions exhibit superior catalytic activity in the aldol condensation reaction between furfural and acetone. The optimal reaction conditions are at 90 degrees C for 2 hours, achieving conversion rates of over 98% with high selectivity towards F2A for the acetate catalyst.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Uyen-Chi Nguyen Le, Ngoc Xuan Dat Mai, Kieu-Minh Le, Hoang Anh Vu, Huynh-Nhu Thi Tran, Tan Le Hoang Doan
Summary: This study aimed to enhance the bioavailability of rosmarinic acid, a bioactive compound with high anticancer activity, by encapsulating it in tetrasulfide-based porous organosilica nanoparticles. The synthesized nanoparticles were small in size and had a high surface area and an average pore diameter. The nanoparticles showed effective accumulation in cancer cells without toxicity to normal cells. Treatment with rosmarinic acid-containing nanoparticles resulted in significant cell death in cancer cells. Overall, these findings suggest that the synthesized nanoparticles can enhance the pharmacological effects of rosmarinic acid.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jiamin Qi, Hengxi Zhu, Tianyu Yang, Xingyuan Wang, Zixuan Wang, Xiaoli Lei, Bin Li, Wenmin Qian
Summary: This study synthesized a novel iron-biochar adsorbent using the iron content in red mud to remove heavy metals from wastewater. The adsorbent showed excellent removal efficiency and sustainability. This method addresses both industrial waste recovery and heavy metal adsorption issues.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Bo Yi, Li Zhang, Haiyang Zhou
Summary: Plasma protein binding plays a crucial role in the pharmacokinetics and pharmacodynamics of therapeutic bioactive materials. In this study, the interaction of nordentatin, a member of coumarins, with human alpha-1 acid glycoprotein (AGP) was investigated, and the anticancer potency of nordentatin against human colorectal cancer cells was evaluated. The results showed that nordentatin binds to AGP through a static quenching mechanism and exhibits inhibitory effects on the growth of HCT-116 cells by increasing intracellular ROS and [Ca2+] levels and triggering apoptosis-related gene overexpression. Therefore, nordentatin could be a promising plant-based therapy for colorectal cancer.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qiming Pang, Cui Wang, Bangtao Li, Suli Zhang, Jiaoyang Li, Shuo Gu, Xueyu Shi
Summary: This study evaluated the effects of resveratrol loaded in copolymer nanoparticles on cerebral ischemia/reperfusion (I/R) injury in rats. The results showed that RES.CP.NPs could have neuroprotective effects through their antioxidant and anti-inflammatory activities, leading to improved neurological disability scores and decreased oxidative stress levels.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Maryam Rachmawati Sumitra, Lung-Ching Chen, Wei-Chen Tsai, Muhamad Ansar, Bashir Lawal, Ntlotlang Mokgautsi, Jih-Hwa Guh, Alexander T. H. Wu, Hsu-Shan Huang
Summary: Tetraheterocyclic compounds derived from natural sources and contemporary pharmaceuticals have shown promise as multitarget therapeutic agents. In this study, a series of synthesized compounds were evaluated for their potential in breast cancer treatment. Compounds 18 and 20 demonstrated significant antiproliferative activity against breast cancer cell lines and their mode of action was revealed through molecular docking simulations.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Mohammad Khosravani, Mohsen Dehghani Ghanatghestani, Farid Moeinpour, Hossein Parvaresh
Summary: The aim of removing Pb(II) from water is to minimize the potential harm posed by toxic metals to both human health and the environment. A covalent organic framework adsorbent called TFPOTDB-SO3H was developed with excellent properties such as high repeatability, selectivity, and easy solid-liquid separation. The adsorbent showed impressive capability of adsorbing Pb(II) and effective removal of it from a solution with various ions, suggesting its potential for effectively adsorbing and removing Pb(II) heavy metal ions from wastewater.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Ashraf H. Farha, Mohamed S. Shams, Hasna A. Alali, Zakia H. Alhashem, Shehab A. Mansour, Shrouq H. Aleithan, Ragab A. Elsad
Summary: The current study examines the dielectric and thermal properties of transformer oil incorporated with Mn0.5 Zn0.5 Fe2O4 nanoparticles. The results show that the addition of Mn-Zn ferrite NPs improves the dielectric constant, dissipation factor, AC breakdown voltage, and convective heat transfer of the nanofluid.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Limin Hou, Zongpei Jiang, Minqi Ye, Xueyan Sun, Kexin Liu, Yifan Zhu, Xiaoyu Wang, Liangzhu Chen, Ruiheng Gu, Binghu Fang
Summary: The excessive accumulation of antibiotic residue in animal-derived foods poses a threat to health. Therefore, it is necessary to establish a rapid, simple, effective, safe, and highly sensitive method for detecting lincomycin residues. By using a pre-column derivatization method on high-performance liquid chromatography equipped with ultraviolet, the UV absorption of lincomycin is improved, allowing for detection and quantification.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Kun Tang, Xin-Xin Wang, Jin-Jin Zhao, Ning Ren, Jian-Jun Zhang
Summary: This study reports the synthesis, crystal structures, and thermal degradation properties of three new rare earth coordination compounds. Compounds 1-3 exhibit binuclear structures which can form chain-like structures via hydrogen bonding. Compound 2 shows potential application value in the orange-red luminescence region.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Seoyoun Yang, Eunbi Yu, See-Hyoung Park, Sae Woong Oh, Kitae Kwon, Su Bin Han, Soo Hyun Kang, Jung Hyun Lee, Heejun Ha, Minkyung Song, Jae Youl Cho, Jongsung Lee
Summary: This study investigated the effects of blue light on the hypodermis and found that it has antiadipogenic properties by reducing lipid accumulation and downregulating the expression of adipogenic genes. Blue light also increased the phosphorylation of PPAR gamma and TRPV1, suggesting its anti-adipogenic effect through these signaling pathways.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Abdul Nasir, Abdul Waheed Khan, Hamid Rafiq Khattak, Abdus Samad, Sami Ullah, Haroon Khan, Muhammad Faheem, Qian Bai
Summary: This study evaluated the effects of isoxazolone derivatives on cisplatin-induced neuropathy in a rat model. The results showed that isoxazolone derivatives effectively reversed mechanical allodynia, similar to the known therapeutic agent pregabalin. Molecular docking analysis indicated that isoxazolone derivatives have strong binding affinity for relevant receptors and potential inhibitory activity against relevant signaling pathways. This study has innovative implications for the treatment of cisplatin-induced neuropathic pain.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Shahid Wahab, Haroon Muhammad Ali, Maham Khan, Tariq Khan, Chandran Krishnaraj, Soon-Il Yun
Summary: In this study, we synthesized chitosan nanoparticles, silver nanoparticles, and chitosan/silver nanocomposites using aqueous ginger extract as a green approach. These nanomaterials showed significant antibacterial properties and low toxicity. Furthermore, the nanomaterials conjugated with tobramycin demonstrated enhanced antibacterial efficacy and exhibited interactions with Pseudomonas aeruginosa.
ARABIAN JOURNAL OF CHEMISTRY
(2024)