Article
Chemistry, Physical
Sesegma Ts. Khankhasaeva, Sayana V. Badmaeva, Marina V. Ukhinova
Summary: The adsorption of diclofenac (DCF), a common pharmaceutical pollutant, on Fe2O3-pillared montmorillonites (Fe-PMts) was studied. Fe-PMts were synthesized by intercalation of natural montmorillonite with iron polyoxocations. The pillaring process significantly increased the specific surface area and sorption capacity of the clay. The pH, sorbent content, DCF concentration, and temperature were found to be the main factors affecting DCF adsorption. The kinetic data and adsorption isotherm were analyzed using various models, and the results showed that the adsorption followed pseudo-second order kinetics and Langmuir isotherm. The thermodynamic parameters indicated that the adsorption of DCF on Fe-PMt was spontaneous and exothermic. Fe-PMt was proven to be an effective and environmentally friendly sorbent for DCF removal in pharmaceutical wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Review
Chemistry, Physical
Tao Chen, Tianxing Da, Yan Ma
Summary: This article highlights the ambiguity in calculating adsorption equilibrium constants and thermodynamic parameters, emphasizing the importance of using dimensionless standard equilibrium constants and the influence of standard state selection on the values of ΔG(θ), ΔH-θ, and ΔS-θ. Various methods for calculating equilibrium constants for different isotherm models are provided.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Multidisciplinary Sciences
Edwin Andrew Ofudje, Ezekiel F. Sodiya, Olajire S. Olanrele, Fatai Akinwunmi
Summary: This study investigated the use of chemically synthesized apatite (CHAp) powder as an adsorbent for removing Cd2+ from water. The effects of time, initial Cd2+ concentration, amount of CHAp, temperature, and solution pH on the adsorption process were studied. Various analytical techniques were used to analyze the synthesized hydroxyapatite (HAp) powder and confirm its adsorption capacity. The results showed that CHAp performed well as an adsorbent for Cd2+ and could be used in bioremediation applications.
Article
Environmental Sciences
Nazanin Mosleh, Mohsen Najmi, Ehsan Parandi, Hamid Rashidi Nodeh, Yasser Vasseghian, Shahabaldin Rezania
Summary: This study synthesized a novel binary functional adsorbent, MSP-PANI, based on sporopollenin, magnetic nanoparticles, and polyaniline, and applied it to enhance the uptake of lead ions from wastewater. The nanocomposite's functionalities, surface morphology, magnetic properties, and elemental composition were investigated. The adsorption process showed that MSP/PANI ratio of 1:1, pH 6, adsorbent dosage of 40 mg, and contact time of 90 min at room temperature were optimal. The maximum adsorption capacity for lead ions was 163 mg/g, and the adsorption mechanism was identified as physio-sorption with endothermic nature.
Article
Engineering, Environmental
Pramod Kumbhar, Dattatray Narale, Rakhee Bhosale, Chitra Jambhale, Jin-Hyeok Kim, Sanjay Kolekar
Summary: This study reports the synthesis and application of tea waste/Fe3O4 magnetic composite for the adsorption of crystal violet dye from aqueous solution. The composite showed high efficiency and adsorption capacity for the removal of CV dye. The adsorption process was found to be spontaneous and heat releasing.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Analytical
Ayat Allah Al-Massaedh, Fawwaz I. Khalili
Summary: In this study, macroporous polyacrylamide-based monoliths with negatively charged interaction sites were synthesized for the removal of Th4+ from aqueous solutions. The effects of various factors on the adsorption process were studied, and the adsorption data were best described by Freundlich and Langmuir models. Kinetic studies showed that the adsorption process followed pseudo-second order kinetics, and thermodynamic studies revealed it to be an endothermic and spontaneous process.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2021)
Article
Environmental Sciences
Prabu Deivasigamani, P. Senthil Kumar, Sathish Sundaraman, Michael Rahul Soosai, A. Annam Renita, M. Karthikeyan, Nessipkhan Bektenov, Omirserik Baigenzhenov, D. Venkatesan, J. Aravind Kumar
Summary: This study successfully synthesized coffee husk activated carbon through chemical modification and demonstrated its effectiveness in removing Methylene blue dye from wastewater. The experimental variables, including dosage, pH, temperature, and contact time, were carefully adjusted to optimize the adsorption process. The results showed that chemical activation enhanced the adsorptive potential of coffee husk by increasing the number of pores and roughness.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Zhenjian Liu, Chao Pu, Xidong Du, Hong Yin, Yugang Cheng
Summary: The combined effects of surface chemistry and pore structure on water vapor adsorption characteristics of coal were studied. The results showed that water vapor adsorption depends on surface chemistry but not pore structure. The monolayer adsorption capacity decreases with increasing coal rank. The diffusion coefficient also decreases with coal rank, and the diffusion activation energy for high-volatile bituminous is higher than the other coals.
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Agricultural Engineering
Jian Han, Bin Xu, Huan Wang, Guohong Huang, Xiaolei Zhang, Yong Xu
Summary: The acid hydrolysis of lignocellulosic biomass has potential for industrial applications, but the complex degradation products in the hydrolysate can have restrictions and toxicity on subsequent utilization. This study used anion-exchange resin to separate and purify the main degradation products from acidic corncob-hydrolysate, with significant removal of acetic acid, furfural, and lignin while minimizing loss of xylose. The results provide a theoretical basis for the separation, purification, and bioconversion of acidic lignocellulose-hydrolysate.
BIORESOURCE TECHNOLOGY
(2022)
Article
Polymer Science
Arti Mahto, Sumit Mishra
Summary: The study successfully removed RB-19 dye using GG-g-PAM-cl-Borax, with the synthesized material structure and properties confirmed by characterization techniques. The adsorption process followed Pseudo Second Order Kinetics, showing high removal rates and adsorption capacity in all cases after optimization of parameters and study of adsorption isotherms. Positive ΔH and ΔS values indicated an endothermic reaction and randomness of the dye molecule, while negative ΔG values supported the feasibility of the adsorption mechanism.
Editorial Material
Environmental Sciences
Rehanguli Maimaitiniyazi, Xueyong Zhou
Summary: This comment reviewed the paper by Kayalvizhi et al. (2022) and pointed out the calculation and quotation errors, providing the correct approach. The results of this comment are valuable for researchers, editors, reviewers, and readers in the field.
ENVIRONMENTAL RESEARCH
(2022)
Article
Polymer Science
Ahmed H. El-Shazly, Marwa Elkady, Amira Abdelraheem
Summary: This study demonstrates the impressive adsorption behavior of PANI and PANC nanomaterials synthesized using CO2-assisted polymerization technique towards NH3 gas. These materials hold promise as effective adsorbents for controlling gaseous air pollutants.
Article
Chemistry, Physical
Zuleyha Bingul
Summary: The study investigated the removal of methylene blue dye using natural clay and found that the Langmuir isotherm model was suitable for describing the adsorption process. The highest removal efficiency was achieved with 0.3 g L-1 adsorbent concentration and 20 mg L-1 dye concentration, reaching 94.69%.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Yanhua Lei, Huapeng Sun, Zhenghua Tang, Chongsong Zhou
Summary: The study used statistical thermodynamic method to calculate adsorbate entropy in a two-dimensional ideal gas model, and theoretically proved the linear correlation between 2D and 3D entropy.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Environmental Sciences
Mohammed Ilyas Khan, Mohammed Khaloufa Almesfer, Abubakr Mustafa Elkhaleefa, Abdelfattah Aamary, Ismat Hassan Ali, Mohammed Zubair Shamim, Hamada Shoukry, Mohmmad Rehan
Summary: This study investigates the adsorption behavior of chromium (IV) ions using a novel FeCr-PANI adsorbent and successfully predicts the adsorption behavior using an artificial neural network model. The results show that process parameters such as temperature, pH, initial concentration, adsorbent dosage, and contact time have a significant influence on the adsorption process. The Langmuir isotherm model provides the best fit to the experimental data.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Chemical
Sara Abdi, Masoud Nasiri, Shushan Yuan, Junyong Zhu, Bart Van der Bruggen
Summary: This study explored the modification of PES ultrafiltration membranes using HFO particles to enhance super-hydrophilic properties, comparing different surface modifications and optimal conditions for membrane performance. The synthesized super-hydrophilic membrane showed high water flux, low fouling, and high flux recovery ratio in separating oil-water emulsions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Mohammad Ghazvehi, Masoud Nasiri, Mohammad Hasan Mallah, Jaber Safdari
Summary: The research indicates that adding nanoparticles and surfactants can improve mass transfer efficiency in pulsed packed column liquid-liquid extraction systems, but the nanoparticles are not stable in this system. Simultaneously applying surfactants and nanoparticles can enhance the stability of nanoparticles.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Environmental Sciences
Pouran Rahnama Haratbar, Ahad Ghaemi, Masoud Nasiri
Summary: The HCP-CN adsorbent showed excellent efficiency and speed in removing lead ions from wastewater, with characteristics of exothermic and spontaneous adsorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Abbas Shahrabadi, Parham Babakhani Dehkordi, Fatemeh Razavirad, Reza Noorimotlagh, Masoud Nasiri Zarandi
Summary: The study found that low salinity water injection has a significant effect on releasing trapped oil, and smart water flooding achieves the maximum oil recovery. Low salinity water and smart water have a significant impact on relative permeability curves, indicating wettability alteration.
NATURAL RESOURCES RESEARCH
(2022)
Article
Engineering, Environmental
Sara Abdi, Masoud Nasiri, Bart Van der Bruggen
Summary: The aim of this study was to selectively separate precious metals such as gold and palladium from a binary solution using the Gemini micellar-enhanced ultrafiltration (GMEUF) process. The results showed that the improved GMEUF process achieved good selectivity in the separation of gold and palladium.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Sara Abdi, Masoud Nasiri, Zhaohuan Mai
Summary: Dissipative particle dynamics (DPD) simulation was used to investigate the self-assembled structure of DTAB and 12-6-12 surfactants in aqueous solution. The effects of simulation time and surfactant concentration on micelle formation were studied. Increasing the surfactant concentration led to the deformation of micellar clusters into spherical, wormlike, cylindrical, and lamellar shapes. The study also investigated the influence of surfactant and gold concentrations on the micellar-enhanced ultrafiltration (MEUF) process for Au(III) separation, estimating the separation efficiency of gold mesomolecules and micellar binding constant. The simulation results demonstrated the excellent effect of micelles on Au(III) separation using the MEUF process, as the surfactant concentration increased and micelles grew in size, resulting in increased bonding probability between metal mesomolecules and micelles and decreased passage of gold beads through the polymeric membrane.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Chemical
Monireh Zolfaghari, Masoud Nasiri, Ali Haghighi Asl
Summary: Microemulsion systems are attracting attention from researchers because of their low energy requirements and thermodynamic stability in a wide range of applications. The viscosity of microemulsions was characterized and predicted in this study, using Tween 20 and Tween 80 as surfactants and n-butanol as co-surfactant. Different types of Winsor microemulsions were described using the phase diagram and evaluated for viscosity, particle size, and electrical conductivity. The mean droplet size and viscosity of the microemulsion were 8-200 nm and 10.4-39.1 cp, respectively. Finally, a new equation was proposed to predict microemulsion viscosity based on the ratio of dispersed phase fraction to surfactant fraction.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Polymer Science
Pouran Rahnama Haratbar, Masoud Nasiri, Ahad Ghaemi
Summary: This study synthesized hypercrosslinked polystyrene adsorbents based on polystyrene (P-HCP) and expanded polystyrene (EPS-HCP) using a simple one-step Friedel-Crafts reaction for lead removal. The synthesized adsorbents showed high surface areas and porous morphologies. The experiments demonstrated that the hypercrosslinked adsorbent can effectively remove lead ions from the effluent solution, with optimal conditions of 30°C temperature, 40 minutes contact time, and 80 mg/L lead concentration.
IRANIAN POLYMER JOURNAL
(2023)
Article
Multidisciplinary Sciences
Azadeh Yarahmadi, Mohammad Hassan Khani, Masoud Nasiri Zarandi, Younes Amini, Ali Yadollahi
Summary: This study investigated the removal efficiency of Cerium (Ce(III)) and lanthanum (La(III)) ions from aqueous solution using Amberlite XAD-7 resin impregnated with DEHPA (XAD7-DEHPA). The optimal operating conditions were determined through response surface methodology based on the central composite design. The results showed that XAD7-DEHPA resin was effective in selectively removing Ce(III) and La(III) ions, with an adsorption percentage of 99.99% and 78.76% respectively. Langmuir isotherm model was found to best describe the equilibrium data, and the maximum adsorption capacity of the adsorbent was 8.28 mg/g for Ce(III) and 5.52 mg/g for La(III).
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Mohammad Sadegh Karambeigi, Atefeh Hasan-Zadeh, Mohammad Saber Karambeigi, Seyyed Ali Faal Rastegar, Masoud Nasiri, Yousef Kazemzadeh
Summary: This research develops a multi-objective optimization methodology for chemically enhanced oil recovery in a sandstone reservoir. It combines experimental design methods and artificial intelligence techniques to optimize the control variables and achieve the highest performance of a surfactant/polymer injection project. The results demonstrate the effectiveness of this hybrid artificial intelligence methodology.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Azadeh Yarahmadi, Mohammad Hassan Khani, Masoud Nasiri Zarandi, Younes Amini
Summary: The aim of this study was to investigate the ability of AXAD-7 resin impregnated with CYANEX-272 to remove cerium and lanthanum ions from aqueous solutions. The prepared adsorbent material was characterized using FTIR, SEM-EDX, and BET methods. The impact of process variables including pH, adsorbent dose, and temperature on the removal of cerium and lanthanum ions was evaluated. The results showed that AXAD-7 resin impregnated with CYANEX-272 performed well in removing both cerium and lanthanum ions.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Chemical
Parisa Abhari, Sara Abdi, Masoud Nasiri
Summary: In this study, the micellar-enhanced ultrafiltration (MEUF) process was used to remove Pb2+ ions from aqueous solutions using sodium dodecyl sulfate (SDS) and sodium lauroyl sarcosinate (Sarkosyl) as anionic surfactants. The efficiency of Sarkosyl in lead ion removal was compared to SDS. The effect of electrolyte concentration and lead salt anions on the MEUF process was investigated. The results showed that increasing NaCl concentration significantly reduced the permeate flux, while lead ion concentration had minimal impact. The highest removals of Pb2+ ions were observed at specific concentrations of Pb(NO3)2 and NaCl for both surfactants.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
