Article
Chemistry, Inorganic & Nuclear
Gholamreza Ebrahimzadeh-Rajaei
Summary: This study investigated the adsorption of reactive red-P2B dye on montmorillonite clay as a cost-effective inorganic adsorbent. The montmorillonite clay was characterized using various analytical techniques. Factors such as pH, adsorbent dosage, initial concentration, and contact time were evaluated. The adsorption capacity of the dye decreased with increasing pH and temperature, and the Freundlich model provided the best fit for the adsorption data.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Chemical
Nilgun Onursal
Summary: This study used mixed-type clay as an adsorbent to remove Ni(II) ions from aqueous solutions. Crystallographic analysis was performed for identification. Various parameters such as concentration, temperature, amount of adsorbent, and thermodynamic parameters were examined. The data fitted the Langmuir adsorption isotherm model the best and the clay showed moderate efficiency in removing Ni(II) ions.
DESALINATION AND WATER TREATMENT
(2022)
Article
Environmental Sciences
Sami Ullah, Altaf Ur Rahman, Fida Ullah, Abdur Rashid, Tausif Arshad, Eva Viglasova, Michal Galambos, Niyaz Mohammad Mahmoodi, Haseeb Ullah
Summary: The study evaluated the potential of three different natural inorganic clays for removing malachite green dye from aqueous solutions. Results showed that Langmuir isotherm model and pseudo-first-order kinetic model best described the adsorption behavior of MG, and natural inorganic clays with higher surface area can be effective adsorbents for removing MG dye.
Article
Chemistry, Physical
Zhou Fang, Huang Suhua, Liu Xu, Feng Jian, Liu Qi, Wang Zhiwei, Li Chuanchang, Xu Yuanlai
Summary: In this study, montmorillonite (Mt) was modified to enhance its adsorption capacity of rare earth ions (RE3+). The adsorption capacity of RE3+ on modified Mt was found to be influenced by the initial concentration and temperature, with the adsorption process being controlled by chemisorption. The pseudo-second-order model accurately represents the adsorption kinetics, and the process is determined to be a spontaneous endothermic process through thermodynamic studies.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Environmental
Guilherme L. Dotto, Julien Vieillard, Diana Pinto, Sabrina F. Luetke, Luis F. O. Silva, Glaydson S. dos Reis, Eder C. Lima, Dison S. P. Franco
Summary: This study investigated the recovery of Gd3+ from real leachate of phosphogypsum using natural bentonite clay. The adsorption study revealed that the clay has typical bentonite characteristics and can effectively adsorb Gd3+. The kinetics and thermodynamics of the adsorption process were analyzed, and it was found that the Langmuir model and Avrami fractional order model were suitable for describing the adsorption isotherms and kinetic data, respectively. The study also showed that citric acid was an efficient desorbing agent for Gd3+ from the bentonite, and the clay could selectively recover Gd3+ from the real leachate of phosphogypsum.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Abdul Samad, Muhammad Imran Din, Mahmood Ahmed, Saghir Ahmad
Summary: The aim of the study was to synthesize zinc oxide nanoparticles (ZnONPs) composite with clay and explore their capability as adsorbents for lead (II) eradication. The Langmuir model was found to be the best for interpreting the adsorption process, with adsorption capacities of 12.43 mg/g and 14.54 mg/g for SC and ZnONPs-SC, respectively. Kinetic studies revealed that pseudo second order kinetics was followed by the processes, indicating multiple steps involved in controlling the rate of reactions.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Deva Nand Sharma, Anil Yadav
Summary: This paper presents a novel adsorbent, Chhotidudhi, for the removal of nickel ions from aqueous solutions. The adsorbent was characterized using FTIR, XRD, SEM, and TGA. The adsorbent showed strong bond with metals and had an amorphous structure with a porous morphology. At optimized conditions, the adsorption capacity for the adsorbent was 52.4 mg/g and 109.05 mg/g, with removal efficiencies of 81.6% and 93.8% for ETR and ETA, respectively. The experimental results fit well with Langmuir and pseudo-second-order reactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Tariq A. Altalhi, Mohamed M. Ibrahim, Gaber A. M. Mersal, M. H. H. Mahmoud, Tushar Kumeria, Mohamed G. El-Desouky, Ashraf A. El-Bindary, Mohamed A. El-Bindary
Summary: In this study, mango seeds activated carbon (MSAC) nanoparticles were prepared with high biocompatibility for potential use as drug carriers. The experimental results showed that the nanocomposite significantly enhanced the adsorption performance of the anti-cancer drug DOX, indicating its potential in drug delivery applications.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Sen Yang, Xiantang Liu, Gang Yang
Summary: This study uses molecular dynamics simulations to investigate cation exchange mechanisms at clay interfaces, revealing different selectivities for various binary ion systems and highlighting the strong coupling between thermodynamics, kinetics, and confinement effects. The results provide new insights into cation exchange processes at clay interfaces and offer explanations for experimental observations at the molecular level.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Chemical
Bhaswati Devi, Netra Prova Baruah, Anasuya Bharadwaj, Arundhuti Devi
Summary: Elimination of excessive fluoride from the environment is a serious issue nowadays. In this study, a novel activated carbon supported tetrametallic oxide hybrid system was developed for fluoride removal. The adsorption performance of the system was investigated and it was found to follow Freundlich isotherm and pseudo-second order kinetics, indicating both physical and chemical adsorption mechanisms.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Environmental
Ataollah Babakhani, Majid Sartaj
Summary: This study successfully removed cadmium from aqueous solution using Cd(II)-imprinted chitosan hydrogel beads. The synthesis was confirmed through various analyses, and the adsorption process parameters and mechanisms were determined through batch adsorption tests and isotherm investigations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Fazal Haq, Arshad Farid, Naveed Ullah, Mehwish Kiran, Rizwan Ullah Khan, Tariq Aziz, Sahid Mehmood, Muhammad Haroon, Muhammad Mubashir, Awais Bokhari, Lai Fatt Chuah, Pau Loke Show
Summary: This study focused on the removal of methylene blue from aqueous solution using Car-St-g-PVP as a cost-effective and biodegradable adsorbent. The experimental results showed that the adsorption process followed pseudo 2nd order kinetics and Langmuir's adsorption isotherms, indicating a chemisorption mechanism. Thermodynamic studies revealed a spontaneous nature of the adsorption process, with increasing randomness and endothermic nature as indicated by positive entropy and enthalpy values. The separation factor (RL) was less than one, confirming the feasibility of the adsorption process. Overall, Car-St-g-PVP demonstrated high efficiency in removing methylene blue and could be a promising option for wastewater treatment.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Asma Nasrullah, Amir Sada Khan, A. H. Bhat, Israf Ud Din, Abrar Inayat, Nawshad Muhammad, Esraa M. Bakhsh, Sher Bahadar Khan
Summary: The study investigates the effects of short time ball milling on activated carbon synthesized from mangosteen peels waste, and its adsorption capability for methylene blue dye. Results showed that ball milling decreases particle size of activated carbon, increases adsorption efficiency, and is influenced by pH, contact time, and temperature.
Article
Chemistry, Physical
Ghaferah H. Al-Hazmi, Moamen S. Refat, Khaled F. Alshammari, Khadiza Tul Kubra, Ahmed Shahat
Summary: A simple synthesis method was used to prepare mesoporous alumina nanorods, which exhibited a high adsorption capacity for the anti-cancer medication DOX. The adsorption behavior of DOX on the alumina nanorods was evaluated under different conditions, and the Langmuir adsorption model was found to fit the data well. The adsorption kinetics followed a pseudo-second-order model, and the adsorption process was endothermic and spontaneous. The alumina nanorods also showed good adsorption performance for DOX in real water samples and could be used for wastewater treatment.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Engineering, Chemical
Lei Hu, Shunhui Tao, Junting Xian, Xiaodong Zhang, Yao Liu, Xiaojie Zheng, Xiaoqing Lin
Summary: In this study, three kinds of amide functional group modified hyper-cross-linked adsorption resin were synthesized and evaluated for their adsorption performance and selectivity towards 5-hydroxymethylfurfural (5-HMF). The poly (BDM-alt-DVB) resin showed the highest adsorption capacity and excellent selectivity, as well as good reusability. This study is significant for the separation of 5-HMF hydrolysate.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2022)