Chemical Engineering, Filtration and Separation, Environmental Engineering, Water Science and Technology
89
Scopus Publications
654
Scholar Citations
14
Scholar h-index
16
Scholar i10-index
Scopus Publications
Exploring the potential of SnO2 nanoparticles for CO2 capture using RSM and ANN Firouzeh Salimian, Alireza Hemmati, Ahad Ghaemi Scientific Reports, 2026 This study investigates the properties of SnO2 nanomaterials as CO2 adsorbents. Although CO2 capture technologies have significantly advanced, challenges such as high costs and limited scalability persist. In recent years, nanomaterials have emerged as promising candidates for CO2 adsorption due to their high adsorption capacity, lower cost, and wide availability. However, future research should focus on developing low-cost and efficient nanomaterials to enable large-scale industrial CO2 capture. This study examined the CO2 adsorption capacity using SnO2 nanoadsorbents by employing response surface methodology (RSM) and artificial neural networks (ANNs), specifically radial basis function (RBF) and multilayer perceptron (MLP) networks, for process modeling and optimization. Through the analysis of experimental data, temperature, pressure, and adsorption time were identified as crucial influencing factors. The R2 value of 0.9933 for RSM indicated a great match, whereas the R2 value of one for ANNs indicated superior predictive accuracy. With a minimum mean squared error (MSE) of 0.00012 for the dataset, the MLP was trained using a three-layer activation function. With 288 neurons and a spread of 2, the RBF network achieved an R2 value of 0.9985 and a minimal MSE of 0.00075. The smooth MLP plots effectively captured complex discontinuities, showcasing the superior predictive abilities of ANNs for optimizing the CO2 adsorption process using SnO2 nanoadsorbents, while the RSM surfaces exhibited rigid, polynomial-based patterns.
Study of CO2 capture by synthesized composite and modelling with machine learning and response surface methodology Hadiseh Masoumi, Ahad Ghaemi, Pouria Zareei, Alireza Hemmati Scientific Reports, 2026 This research investigated and optimized the separation of carbon dioxide (CO 2 ) from natural gas in an adsorption column filled with grafted-beam nanofiber adsorbent. The main purpose of using ANN and RSM models in this manuscript is to compare these two methods in predicting the CO 2 adsorption capacity. In other words, it was made to find a suitable model that has the highest agreement with the experimental data. Also, the other purpose of using the RSM model is to detect the optimized empirical conditions. Moreover, two common ANN models are applied in this work, including a multilayer perceptron (MLP) and radial basis function (RBF). The novelties of this work are explained as follows: (1) detecting the optimized synthesis factors of NF-PAN/PUGMA sorbent which possess the highest CO 2 adsorption capacity with the help of response surface methodology (RSM), (2) studying the simultaneous interaction of synthesis parameters on the CO 2 adsorption capacity with the help of both RSM and artificial neural networks (ANNs), (3) testing two types of ANN models including multilayer perceptron (MLP) and radial basis function (RBF) to predict the effect of monomer volume percentage and irradiation dose on the CO 2 adsorption capacity. Indeed, finding the best model (ANN or RSM) can help engineers in practical applications predict CO 2 adsorption capacity using NF-PAN/PUGMA under different conditions without incurring high-priced chemical materials, electricity, or human resources. The validation results were examined using correlation coefficients (R 2 ) of RSM, RBF, and MLP models. The correlation coefficients for the RSM, RBF, and MLP models were 0.9910, 0.9949, and 0.9968, respectively. Additionally, the average absolute relative deviation (AARD) values for the RBF and MLP models were 0.00046512 and 0.00045511, respectively, indicating that the MLP model is better than the RBF model. To identify the optimal network structure, the trial-and-error method was conducted for MLP and RBF models. The number of neurons was found at 12 and 45 for MLP and RBF, respectively. The optimized effective parameters were obtained using RSM: 25.80% GMA, 66.45% amine, and an irradiation intensity of 28 kGy.
A comprehensive review on advanced zeolite–polymer architectures for high-performance CO2 capture Zahra Raeisi-Chehrazi, Fatemeh Bahmanzadegan, Alireza Hemmati, Ahad Ghaemi Carbon Capture Science and Technology, 2026 • Carbohydrate polymers enable sustainable shaping of zeolite-based CO 2 adsorbents. • Polysaccharide matrices preserve zeolite microporosity while enhancing moisture tolerance. • Interfacial polymer architecture controls diffusion, pore accessibility, and cyclic stability. • Polymer chemistry tunes CO 2 affinity and mitigates competitive H 2 O adsorption. • A mechanistic framework links composite design to performance under humid conditions. . The CO 2 emissions continue to intensify the need for scalable, energy-efficient separation technologies for point-source mitigation. Zeolites remain benchmark physisorbents due to their crystalline microporosity, high density of adsorption sites, and molecular sieving; however, their performance frequently deteriorates under humid feeds. Zeolite–polymer composites are emerging as a robust engineering solution to this bottleneck, synergistically coupling the high density of crystalline adsorption sites and molecular sieving of zeolites with the tunable moisture tolerance and reversible chemisorption of polymers. This comprehensive review critically evaluates recent advances in the integration of natural and synthetic zeolites with diverse polymer matrices, including chitosan, polyethyleneimine (PEI), cationic polyelectrolytes, and polyacrylates. We systematically analyze how polymer chemistry, interfacial loading, and spatial distribution govern crucial performance metrics: pore preservation, diffusion resistance, and cyclic stability. Emphasizing exceptional gas separation performance, we highlight state-of-the-art composites such as clinoptilolite@chitosan, which achieves an outstanding CO 2 uptake of 9.01 mmol g −1 at 298 K and 9 bar. Furthermore, optimal polymer impregnation markedly enhances high-temperature performance; for example, MCM-41-PEI architectures (50 wt% loading) deliver 4.89 mmol g-1 at 348 K, representing a 24-fold increase in capacity over the raw support. Beyond capacity, polymer-enabled microstructural engineering can invert traditional selectivity trade-offs, as seen in Na-Y@polyacrylate systems that exhibit a simultaneous 17.9% enhancement in CO 2 affinity alongside a 36.6% suppression of competitive H 2 O uptake. By consolidating empirical evidence into a unified mechanistic framework, this review provides crucial design guidelines for optimizing zeolite-polymer interphases, facilitating the rational development of next-generation, moisture-tolerant, and highly recyclable adsorbents with lowered regeneration energy for industrial CO 2 mitigation. .
A comprehensive review on the conversion of CO2 into solid carbon materials Bentolhoda Chenarani, Ahad Ghaemi, Alireza Hemmati Carbon Capture Science and Technology, 2026 The conversion of carbon dioxide (CO 2 ) into valuable solid carbon materials presents a promising approach for carbon utilization and climate change mitigation. This review systematically evaluates six major carbon allotropes: graphene, carbon nanotubes (CNTs), carbon nanofibers (CNFs), fullerenes, diamonds, and porous carbon, with a focus on synthesis methods, operating conditions, and industrial feasibility. Among these, CNTs and CNFs show the highest potential, especially when produced via molten carbonate electrolysis or the Solar Thermal Electrochemical Process (STEP), which operate at approximately 750–770 °C and near-atmospheric pressure. These methods have demonstrated high carbon conversion efficiencies and significantly lower estimated production costs compared to conventional CVD techniques, due to their simpler operation and lower material costs. Graphene, although high in quality, requires approximately 1000 °C and expensive catalysts, making it less scalable. Fullerenes (C 60 ) and diamonds have very low yields (<1 %) and require extreme pressures (up to 1000 atm), limiting their industrial use. Porous carbons, synthesized electrochemically or by metal/inorganic reduction at 500–850 °C, show promise for supercapacitors and adsorption, with yields up to 55.3 wt % and built-in doping capabilities. Metal-mediated methods using Mg, Zn, and NaBH 4 offer simplicity, moderate conditions, and tunable structures, while new hybrid approaches provide synergistic benefits. Overall, molten salt electrochemical methods are highly promising candidates for scalable and energy-efficient processes, supporting CO 2 valorization in sustainable carbon material production.
A data driven machine learning approach for predicting and optimizing sulfur compound adsorption on metal organic frameworks Mohsen Shayanmehr, Sepehr Aarabi, Ahad Ghaemi, Alireza Hemmati Scientific Reports, 2025 This study employed some machine learning (ML) techniques with Python programming to forecast the adsorption capacity of MOF adsorbents for thiophenic compounds namely benzothiophene (BT), dibenzothiophene (DBT), and 4,6-dimethyl dibenzothiophene (4,6-DMDBT). Five ML models were developed with the help of a dataset containing 676 rows to correlate the adsorbent features, adsorption conditions, and adsorbate characteristics to the MOF sample’s sulfur adsorption capability. Among the ML approaches, MLP model achieved the best performance with a low mean squared error (MSE) of 0.0032 on the test set and 0.0021 on the training set and mean relative error (MRE) of 15.26% on the test set. Also, Random Forest model yielded a higher test MSE of 0.0045 and MRE of 17.83%. Feature importance analysis was performed by utilizing MLP model and shapely additive plan (SHAP) method, and the findings revealed that “initial concentration of sulfur” (SHAP value 0.51) and “contact time” (SHAP value 0.37) were the crucial factors influenced desulfurization process efficiency. Additionally, a comparative analysis of the features utilizing the MLP network classified the factors into three primary categories: process conditions, adsorbent characteristics, and adsorbate characteristics. Consequently, the process condition was identified as the most significant group compared to others. Finally, the desulfurization process optimization indicated the maximum DBT adsorption of 161.6 mg/g for Zr-based MOF could be achieved when the features including BET, TPV, pore size, oil/adsorbent ration, and temperature were tuned around 756 m 2 /g, 0.955 cm 3 /g, 5.96 nm, 449.85 g/g, 20.1 °C, respectively.
A comprehensive review on elimination of thiophenic compounds from crude oils through combined extractive and adsorptive desulfurization using porous liquids Mohsen Shayanmehr, Ahad Ghaemi, Alireza Hemmati Chemical Engineering Journal Advances, 2025 Porous liquids (PLs) are a new class of hybrid materials that combine the permanent porosity of solids and the fluidity of liquids. Their distinctive dual functionality, facilitating both molecular adsorption and solvent-mediated extraction, renders them ideal candidates for the desulfurization of liquid fuels, particularly for the removal of thiophenic compounds. This review takes a critical assessment of PLs as combined extractive and adsorptive systems, specifically highlighting their application towards sulfur removal. A detailed analysis is given on their desulfurization performance, operational conditions, and removal mechanisms. Quantitative results show that MIL-101(Fe) functionalized with peroxo-polyoxometalates resulted in 100 %, 99.8 %, and 98.5 % removal of dibenzothiophene (DBT), 4-methyldibenzothiophene (4-MDBT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT) (500 ppm) at 70 °C in 30 min. MIL-125(Ti) coupled with [Hnmp]HSO₄ IL exhibited 99.18 % DBT removal (1000 ppm) at 50 °C in a short duration of 10 min, whereas other systems like SBA-15/IL performed <60 % under more severe conditions. Apart from performance, this review discusses economic and environmental aspects, including solvent regeneration, energy efficiency, and system recyclability. Several PLs exhibit low volatility, thermal stability, and ease of recycling, resulting in minimal operational costs and a negligible environmental footprint. All in all, this work provides a critical and timely overview of PL-based solutions for next-generation desulfurization, offering strong prospects for scalable and sustainable fuel processing.
A review of nanostructured carbon dioxide sensors based on electrical and thermal conductivity Firouzeh Salimian, Alireza Hemmati, Ahad Ghaemi Results in Engineering, 2025 • This review focuses on new approaches of several types of technologies for synthesizing carbon dioxide sensors using conductometry. • Researchers have discussed ways to improve measurement performance, such as selectivity, sensitivity, response time, and recovery time, using different materials and catalysts. • The use of conductive sensors has increased due to their unique advantages, such as their wide detection range of 10 to 1000 ppm, long lifetime, and short response time for CO 2 detection. • If accuracy and fast response are considered, thermal conductivity sensors are better options. • Regarding cost and compatibility with electronic systems, electrical sensors also have great potential. This review focuses on new approaches of several types of technologies for synthesizing carbon dioxide sensors using conductometry. Researchers have discussed ways to improve measurement performance using different materials and catalysts, such as selectivity, sensitivity, response, and recovery time. From 2020 onwards, conductive sensors have increased due to their unique advantages, such as a wide detection range of 10 to 1000 ppm, long lifetime, and short response time for CO 2 detection. reliable and quantitative detection of CO₂ requires diverse material strategies capable of operating under various environmental conditions. In general, there are two types of conductive sensors: thermal and electrical conductive sensors with different specifications and can be chosen to suit specific applications, environments and budgets. If accuracy and fast response are considered, thermal conductive sensors are better options. However, in terms of cost and compatibility with electronic systems, electrical sensors also have great potential. This review discusses the types of nanomaterials used for CO 2 gas detection sensors, including metal oxide-based nanomaterials, polymer nanomaterials, carbon nanomaterials, and various nanocomposites. This review examines nanocomposites' electrical and thermal conductivity properties, how they are affected by adding specific nanoparticles, and how to control the composite's performance characteristics, such as thermal and electrical conductivity, by selecting appropriate nanoparticle fillers. Nanomaterials used in CO 2 sensing enable reliable and inexpensive sensors with high performance. Research has proven that semiconducting metal oxides exhibit high conductivity at high temperatures of 600 ºC.
Enhancing CO2 Separation Properties of Poly (ether-block-amide) Mixed Matrix Membranes using Trimethylamine-Assisted Synthesized MOF-5 Nanoparticles and Poly (ethylene glycol) M Momeni, MS Maleh, A Raisi Polymer Testing, 109179 , 2026 2026
A comprehensive review on two-dimensional nanomaterials-mixed matrix membranes for sustainable CO2 separation: from molecular engineering design to efficient modification … MS Maleh, A Bahrami, MSS Sadeghian, H Asadimanesh, M Sadrzadeh Journal of Industrial and Engineering Chemistry 155, 110-146 , 2026 2026
Enhancement CO 2 separation performance of three-component pebax-1657-based mixed matrix membranes containing ZIF-67/amine functionalized CNT dual … A Bahrami, MS Maleh, A Raisi Scientific Reports , 2025 2025 Citations: 4
Fabrication and Evaluation of Polyethersulfone/Sulfonated-Polyethersulfone Blend Membranes for Treatment of Oil-Containing Wastewaters M Atazadeh, A Raisi, M Salehimaleh Journal of Applied Research of Chemical-Polymer Engineering, e27782 , 2025 2025
Tuning gate size of ZIF and tailoring filler-matrix interface via amine ligand exchange for enhanced CO2 Separation Z Mohammadi, MS Maleh, A Raisi Journal of CO2 Utilization 101, 103211 , 2025 2025 Citations: 1
A review on catalytic ceramic membranes for pharmaceutical wastewater treatment: Integration with advanced oxidation processes M Moharrami, MS Maleh, MR Omidkhah Journal of Water Process Engineering 78, 108726 , 2025 2025 Citations: 3
Incorporation of Polyethylene Glycol Diacrylate into Pebax-2533/ZIF-67 Mixed Matrix Membranes: Tailoring the Filler/Polymer Interface and Enhancing CO2 Separation Performance MS Maleh, E Yaghmaei, A Raisi Process Safety and Environmental Protection, 107600 , 2025 2025 Citations: 6
A Comprehensive Review on Polyurethane-Based Membranes for Enhanced CO2 Separation: From Molecular Engineering to Industrial Scalability MS Maleh, A Bahrami, MSS Sadeghian, S Kiani, H Asadimanesh, A Raisi Materials Today Sustainability 31, 101159 , 2025 2025 Citations: 12
Optimization of extrusion parameters for low-cost alumina–kaolin ceramic membranes via CCD M Moharrami, M Omidkhah, MS Maleh Journal of Materials Research and Technology 36, 6661-6678 , 2025 2025 Citations: 5
Hollow fiber membrane contactor for CO2 capture: A review of recent progress on membrane materials, operational challenges, scale-up and economics A Shiravi, MS Maleh, A Raisi, M Sillanpää Carbon Capture Science & Technology 10, 100160 , 2024 2024 Citations: 61
Heteroepitaxial growth of ZIF-67 nanoparticles on the ZIF-L (Zn) nanosheets for fabrication of Pebax mixed matrix membranes with highly efficient CO2 separation MS Maleh, A Raisi Chemosphere 344, 140249 , 2023 2023 Citations: 32
Experimental and modeling study on interfacial morphology of ZIF-67/Pebax-2533 mixed matrix membranes for CO2 separation applications MS Maleh, A Raisi Surfaces and Interfaces 38, 102846 , 2023 2023 Citations: 21
Challenge and promise of mixed matrix hollow fiber composite membranes for CO₂ separations F Pazani, M Shariatifar, MS Maleh, T Alebrahim, H Lin Separation and Purification Technology, 122876 , 2022 2022 Citations: 27
In-situ growth of ZIF-8 nanoparticles in Pebax-2533 for facile preparation of high CO₂-selective mixed matrix membranes MS Maleh, A Raisi Colloids and Surfaces A: Physicochemical and Engineering Aspects, 130747 , 2022 2022 Citations: 37
Preparation of high performance mixed matrix membranes by one-pot synthesis of ZIF-8 nanoparticles into Pebax-2533 for CO₂ separation MS Maleh, A Raisi Chemical Engineering Research and Design 186, 266-275 , 2022 2022 Citations: 37
Engineered graphene-based mixed matrix membranes to boost CO₂ separation performance: Latest developments and future prospects F Pazani, MS Maleh, M Shariatifar, M Jalaly, M Sadrzadeh, ... Renewable and Sustainable Energy Reviews 160, 112294 , 2022 2022 Citations: 71
Study on the advantageous effect of nano-clay and polyurethane on structure and CO₂ separation performance of polyethersulfone based ternary mixed matrix membranes MS Maleh, S Kiani, A Raisi Chemical Engineering Research and Design 179, 27-40 , 2022 2022 Citations: 35
The role of support layer properties on the fabrication and performance of thin-film composite membranes: The significance of selective layer-support layer connectivity H Mokarizadeh, S Moayedfard, MS Maleh, SIGP Mohamed, S Nejati, ... Separation and Purification Technology 278, 119451 , 2021 2021 Citations: 71
Cross-linking of poly (ether-block-amide) by poly (ethylene glycol) diacrylate to prepare plasticizing-resistant CO₂-selective membranes P Taheri, MS Maleh, A Raisi Journal of Environmental Chemical Engineering 9 (5), 105877 , 2021 2021 Citations: 45
CO₂-selective poly (ether-block-amide)/polyethylene glycol composite blend membrane for CO₂ separation from gas mixtures P Taheri, A Raisi, MS Maleh Environmental Science and Pollution Research 28 (28), 38274-38291 , 2021 2021 Citations: 48
MOST CITED SCHOLAR PUBLICATIONS
Engineered graphene-based mixed matrix membranes to boost CO₂ separation performance: Latest developments and future prospects F Pazani, MS Maleh, M Shariatifar, M Jalaly, M Sadrzadeh, ... Renewable and Sustainable Energy Reviews 160, 112294 , 2022 2022 Citations: 71
The role of support layer properties on the fabrication and performance of thin-film composite membranes: The significance of selective layer-support layer connectivity H Mokarizadeh, S Moayedfard, MS Maleh, SIGP Mohamed, S Nejati, ... Separation and Purification Technology 278, 119451 , 2021 2021 Citations: 71
Comparison of porous and nonporous filler effect on performance of poly (ether-block-amide) mixed matrix membranes for gas separation applications MS Maleh, A Raisi Chemical Engineering Research and Design 147, 545-560 , 2019 2019 Citations: 67
Hollow fiber membrane contactor for CO2 capture: A review of recent progress on membrane materials, operational challenges, scale-up and economics A Shiravi, MS Maleh, A Raisi, M Sillanpää Carbon Capture Science & Technology 10, 100160 , 2024 2024 Citations: 61
CO₂-selective poly (ether-block-amide)/polyethylene glycol composite blend membrane for CO₂ separation from gas mixtures P Taheri, A Raisi, MS Maleh Environmental Science and Pollution Research 28 (28), 38274-38291 , 2021 2021 Citations: 48
Cross-linking of poly (ether-block-amide) by poly (ethylene glycol) diacrylate to prepare plasticizing-resistant CO₂-selective membranes P Taheri, MS Maleh, A Raisi Journal of Environmental Chemical Engineering 9 (5), 105877 , 2021 2021 Citations: 45
CO₂-philic moderate selective layer mixed matrix membranes containing surface functionalized NaX towards highly-efficient CO₂ capture MS Maleh, A Raisi RSC advances 9 (27), 15542-15553 , 2019 2019 Citations: 43
In-situ growth of ZIF-8 nanoparticles in Pebax-2533 for facile preparation of high CO₂-selective mixed matrix membranes MS Maleh, A Raisi Colloids and Surfaces A: Physicochemical and Engineering Aspects, 130747 , 2022 2022 Citations: 37
Preparation of high performance mixed matrix membranes by one-pot synthesis of ZIF-8 nanoparticles into Pebax-2533 for CO₂ separation MS Maleh, A Raisi Chemical Engineering Research and Design 186, 266-275 , 2022 2022 Citations: 37
Study on the advantageous effect of nano-clay and polyurethane on structure and CO₂ separation performance of polyethersulfone based ternary mixed matrix membranes MS Maleh, S Kiani, A Raisi Chemical Engineering Research and Design 179, 27-40 , 2022 2022 Citations: 35
Heteroepitaxial growth of ZIF-67 nanoparticles on the ZIF-L (Zn) nanosheets for fabrication of Pebax mixed matrix membranes with highly efficient CO2 separation MS Maleh, A Raisi Chemosphere 344, 140249 , 2023 2023 Citations: 32
Challenge and promise of mixed matrix hollow fiber composite membranes for CO₂ separations F Pazani, M Shariatifar, MS Maleh, T Alebrahim, H Lin Separation and Purification Technology, 122876 , 2022 2022 Citations: 27
Experimental and modeling study on interfacial morphology of ZIF-67/Pebax-2533 mixed matrix membranes for CO2 separation applications MS Maleh, A Raisi Surfaces and Interfaces 38, 102846 , 2023 2023 Citations: 21
Superior performance of surface-treated NaX@ Pebax-1657 membranes for O₂/N₂ separation MS Maleh, A Raisi RSC Advances 10 (29), 17061-17069 , 2020 2020 Citations: 15
CH 4 ‐Selective Mixed‐Matrix Membranes Containing Functionalized Silica for Natural Gas Purification S Mohammdhadi Mousavi, A Raisi, H Hashemi Moghaddam, ... Chemical Engineering & Technology 43 (11), 2167-2180 , 2020 2020 Citations: 13
A Comprehensive Review on Polyurethane-Based Membranes for Enhanced CO2 Separation: From Molecular Engineering to Industrial Scalability MS Maleh, A Bahrami, MSS Sadeghian, S Kiani, H Asadimanesh, A Raisi Materials Today Sustainability 31, 101159 , 2025 2025 Citations: 12
Incorporation of Polyethylene Glycol Diacrylate into Pebax-2533/ZIF-67 Mixed Matrix Membranes: Tailoring the Filler/Polymer Interface and Enhancing CO2 Separation Performance MS Maleh, E Yaghmaei, A Raisi Process Safety and Environmental Protection, 107600 , 2025 2025 Citations: 6
Optimization of extrusion parameters for low-cost alumina–kaolin ceramic membranes via CCD M Moharrami, M Omidkhah, MS Maleh Journal of Materials Research and Technology 36, 6661-6678 , 2025 2025 Citations: 5
Enhancement CO 2 separation performance of three-component pebax-1657-based mixed matrix membranes containing ZIF-67/amine functionalized CNT dual … A Bahrami, MS Maleh, A Raisi Scientific Reports , 2025 2025 Citations: 4
A review on catalytic ceramic membranes for pharmaceutical wastewater treatment: Integration with advanced oxidation processes M Moharrami, MS Maleh, MR Omidkhah Journal of Water Process Engineering 78, 108726 , 2025 2025 Citations: 3