Article
Chemistry, Physical
Ngoc Thang Tran, Thong Le Minh Pham, Trinh Duy Nguyen, Nguyen Van Cuong, Tan Ji Siang, Pham T. T. Phuong, A. A. Jalil, Quang Duc Truong, Sumaiya Zainal Abidin, Ftwi Y. Hagos, Sonil Nanda, Dai-Viet N. Vo
Summary: The study demonstrated that mesoporous gamma-alumina (gamma-Al2O3) synthesized as a support for Co catalyst showed excellent stability and high performance in methane dry reforming, indicating potential applications in the field.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Anh Ngoc T. Cao, Cham Q. Pham, Le Kim Hoang Pham, Dang Le Tri Nguyen, Pham T. T. Phuong, Thi Tuong Vi Tran, Van-Phuoc Nguyen, Thanh Binh Nguyen, Quyet Van Le, Ngoc Anh Nguyen, Tung M. Nguyen
Summary: The metal-support interface plays a crucial role in the dispersion and catalytic activity of catalysts. This study investigated the effect of cerium on cobalt catalyst supported on gamma-alumina and found that cerium promoted the dispersion and reducibility of cobalt, leading to improved conversion of methane and carbon dioxide.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Anh Ngoc T. Cao, Duy Ha Le Phuong, Pham T. T. Phuong, Thanh H. Trinh, Tung M. Nguyen, Phuong T. H. Pham
Summary: The addition of manganese to the cobalt catalyst supported on gamma alumina improved its physicochemical properties, leading to higher metal dispersion and enhanced carbon dioxide adsorption. The manganese-promoted catalyst exhibited higher activity and stability in carbon dioxide reforming of methane compared to the pristine catalyst. The presence of manganese also resulted in notable increases in CH4 and CO2 conversions. The role of carbon dioxide adsorption in catalytic activity was investigated, showing that a proper combination of carbon dioxide activation and methane dissociation can significantly enhance catalytic activity with lower activation energies.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Yang Wang, Weizhe Gao, Kangzhou Wang, Xinhua Gao, Baizhang Zhang, Heng Zhao, Qingxiang Ma, Peipei Zhang, Guohui Yang, Mingbo Wu, Noritatsu Tsubaki
Summary: A tailor-made zeolite capsule catalyst with Ga doping and SiO2 coating combined with Cr2O3 has been shown to boost the synthesis of value-added aromatics from syngas. Ga-doped zeolites with strong CO adsorption capability were found to optimize the first C-C coupling step under a high-pressure CO atmosphere, driving the reaction forward for aromatics synthesis.
Article
Chemistry, Physical
Kun Jiang, Huibo Zhao, Yang Chen, Baozhen Li, Zhang Zhang, Fenghai Cao, Lizhi Wu, Yu Tang, Tiesen Li, Li Tan
Summary: Tailoring the metal-oxide interface by atomic layer deposition (ALD) is a promising strategy to modulate active sites for methanol synthesis from CO2 hydrogenation. The specific Cu/ZnOx/CeO2 interfaces constructed in this study are demonstrated to be the active site for methanol synthesis from CO2 hydrogenation. This strategy provides a viable way to develop catalysts and favors precise understanding of the catalytic-structure activity relationship.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
J. M. Serra, M. Balaguer, J. Santos-Blasco, J. F. Borras-Morell, B. Garcia-Banos, P. Plaza-Gonzalez, D. Catalan-Martinez, F. Penaranda-Foix, A. Dominguez, L. Navarrete, J. M. Catala-Civera
Summary: This study investigates microwave-induced redox transformations on solid-state ion-conducting materials, and finds that reduction is triggered at a specific temperature leading to a significant increase in electric conductivity. The effectiveness of the redox process is influenced by material composition, gas environment, and microwave power intensity, with fine-grained materials showing amplified effects.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Mingzi Sun, Bolong Huang
Summary: This study systematically investigates syngas formation on graphene-based single atomic catalysts, finding that these catalysts can flexibly control the ratio of CO and H2 in syngas. Machine learning results indicate that accurate prediction of selectivity requires a comprehensive understanding of thermodynamic preference and electronic structures.
Article
Chemistry, Physical
Wojciech Gac, Witold Zawadzki, Marcin Kusmierz, Grzegorz Slowik, Wojciech Grudzinski
Summary: Two series of catalysts containing different amounts of neodymium were prepared by the impregnation method, using nano-CeO2 and gamma-Al2O3 as supports. Ceria supported nickel catalysts showed high activity in CO2 methanation reaction and weak activity changes were observed with an increase in Nd content. Complex changes in the nature of their redox and base centres were indicated by various characterizations.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mahadi B. Bahari, Che Rozid Mamat, Aishah Abdul Jalil, Nurul Sahida Hassan, Walid Nabgan, Herma Dina Setiabudi, Dai-Viet N. Vo, Bui Thi Phuong Thuy
Summary: Recently, hydrogen generation through CO2-CH4 reforming has been considered as a promising approach to reduce two major greenhouse gases in the atmosphere. However, catalyst deactivation caused by sintering and coke deposition has been a challenge. Therefore, it is crucial to design an efficient catalyst by selecting suitable supports. Mesoporous alumina has attracted great attention due to its unique morphology and pore structure, which can prevent sintering and deactivation of the active metal during the reaction. This review focuses on the synthesis of unique mesoporous alumina using various methods and conditions, as well as its applications and performance as a catalyst support in CO2-CH4 reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Medhen W. Abebe, Anteneh F. Baye, Hern Kim
Summary: In this study, an interpenetrating polymer network (IPN) strategy was utilized to prepare a recyclable polymeric catalyst for catalytic methanolysis of NaBH4 to produce hydrogen gas. The catalyst exhibited excellent cyclic performance and prolonged catalyst life.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Mohd Razali Shamsuddin, Nasar Mansir, Arfaezah Anuar, Mohd Izham Saiman, Tengku Sharifah Marliza, Mohd Ambar Yarmo, Yun Hin Taufiq-Yap
Summary: The study investigated the synergetic effect between NiO and dolomite support in the dry reforming of methane process, with 10% NiO/dolomite catalyst showing superior performance in producing H-2 rich syngas. The catalytic reaction demonstrated high conversion rates of CH4 and CO2 to H-2, with minimal coke formation and dual site associative adsorption mechanism.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
HuaLun Zhu, Ziyin Chen, Laura Pastor-Perez, Xiangyi Long, Marcos Millan
Summary: Tar removal by catalytic steam reforming is important in gasification hot gas treatment. The effect of a full syngas mixture on this reaction has not been comprehensively investigated. This study analyzes the effect of each component and their combinations on steam reforming of toluene as a biomass gasification tar model. The presence of H2 and CH4 promotes catalyst deactivation, while CO and CO2 have minor inhibitory effects.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
M. B. Bahari, C. R. Mamat, Aishah Abdul Jalil, T. J. Siang, N. S. Hassan, N. F. Khusnun, W. Nabgan, N. A. Roslan, S. Z. Abidin, H. D. Setiabudi, D-V N. Vo
Summary: This article reviews the glycerol valorization routes for hydrogen or syngas generation and focuses on cobalt-based catalysts. By improving the properties of the catalysts, glycerol conversion and dihydrogen yield can be increased, while coke deposition can be reduced.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Multidisciplinary Sciences
Hao-Xin Liu, Jin-Ying Li, Xuetao Qin, Chao Ma, Wei-Wei Wang, Kai Xu, Han Yan, Dequan Xiao, Chun-Jiang Jia, Qiang Fu, Ding Ma
Summary: Constructing effective catalytic interfaces is crucial for improving catalytic performance. In this study, the authors utilized the stress of MoO3/gamma-Mo2N structure and the interaction between Pt and support to construct an effective catalytic interface for the low-temperature reverse water-gas shift reaction. By depositing isolated Pt atoms onto a thin layer of MoO3 surface, followed by reduction into MoOx and formation of Pt clusters, high-density Pt-n-O-v active sites were created, leading to enhanced catalytic activity.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Chemical
Mumtaj Shah, Ankur Bordoloi, Ameeya Kumar Nayak, Prasenjit Mondal
Summary: This study assessed the kinetics of methane reforming with CO2 over a Ni (10%)/La-Al2O3 bimodal pore catalyst, showing sustainable activity during a long-term study. Various analytical techniques were used to characterize the catalyst's physicochemical properties and their correlation with activity and stability was explored. The kinetic data revealed the rate-determining step as the dissociative adsorption of CH4 and intermediate carbon gasification, with satisfactory fit to experimental data and calculated apparent activation energies.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Review
Chemistry, Physical
Yahya Gambo, Sagir Adamu, Abdulrahman A. Abdulrasheed, Rahima A. Lucky, Mohammed S. Ba-Shammakh, Mohammad M. Hossain
Summary: This study comprehensively reviews recent advances in key aspects related to ODHP catalysts, discussing active site nature, isolation, accessibility, and other properties, as well as exploring accelerated discovery of novel catalysts and the application of machine learning frameworks.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Muflih A. Adnan, Abdulhadi A. Al-Zahrani, Tamanna I. Haque, Shaikh A. Razzak, Mohammad M. Hossain
Summary: A new oxygen carrier material was developed for fluidized chemical looping combustion process, serving as both a catalyst and a source of solid phase oxygen. Cerium modification improved the thermal stability of γ-Al2O3, reducing its interaction with MnOx. Experimental results showed that Ce modification enhanced the thermal stability of γ-Al2O3 and improved the reduction and re-oxidation performance of the samples.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Nahid Sultana, S. M. Zakir Hossain, M. Abusaad, N. Alanbar, Y. Senan, S. A. Razzak
Summary: This study successfully developed a model for biodiesel production using microalgae oil with Bayesian optimization algorithm-based machine learning techniques, which showed better performance compared to existing models. By hybridizing BOA with ANN and SVR, the model achieved higher accuracy and reliability, as validated by extra literature data.
Article
Energy & Fuels
S. M. Z. Hossain, Nahid Sultana, Muhammad Faisal Irfan, S. Manirul Haque, Nawaf Nasr, Shaikh Abdur Razzak
Summary: In this article, super learner approaches such as hybrid Bayesian Optimization Algorithm-Support Vector Regression (BOA-SVR), Bayesian Optimization Algorithm-Boosted Regression Tree (BOA-BRT), along with a statistical method (response surface methodology, RSM), were utilized for predicting biodiesel synthesis using waste date seed oil as feedstock. The results showed that the BOA-SVR model outperformed other models with higher accuracy and prediction precision, having lower errors and a higher coefficient of determination (R-2).
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Environmental Sciences
S. M. Zakir Hossain, Nahid Sultana, M. Ezzudin Mohammed, Shaikh A. Razzak, Mohammad M. Hossain
Summary: This study optimized the treatment of tertiary municipal wastewater utilizing Chlorella kessleri microalgae with a hybrid support vector regression model and crow search algorithm, achieving significant improvements in N and P removal efficiencies. The best operating conditions were identified as 29.3 degrees C, 24/0 hours light-dark cycle, and a 6:1 N/P ratio, resulting in N and P elimination efficiencies of 99.97% and 93.48% respectively.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
S. M. Zakir Hossain, Nahid Sultana, Majeed S. Jassim, Gulnur Coskuner, Lujain M. Hazin, Shaikh A. Razzak, Mohammad M. Hossain
Summary: This study develops empirical models for predicting the removal efficiencies of inorganic nitrogen and phosphorus from municipal wastewater using microalgae. The effects of temperature, light-dark cycle, and nitrate-to-phosphate ratio on simultaneous removal of nitrogen and phosphorus were identified. Three competitive soft-computing techniques were used to construct predictive models, and the support vector regression (SVR) model was found to be the most accurate. The SVR models were also able to predict removal efficiencies under different conditions when simulated data was added. Finally, the models were hybridized with a genetic algorithm to optimize nutrient removal efficiency.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
S. M. Zakir Hossain, Nahid Sultana, Shaikh A. Razzak, Mohammad M. Hossain
Summary: This study investigates the effects of temperature, light-dark cycles, and nitrogen-phosphorus ratios on Chlorella vulgaris microalgae biomass productivity and CO2 biofixation. Three artificial intelligence modeling approaches were applied and the support vector regression model showed the best performance. The model also improved the prediction capability of CO2 biofixation compared to the traditional experimental design method. The optimal conditions for maximizing biomass productivity and CO2 biofixation were determined using a multi-objective optimization algorithm.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Energy & Fuels
Mohammed Ameen Ahmed Qasem, Vincent C. O. van Oudenhoven, Amjad A. Pasha, S. Nadaraja Pillai, V. Mahendra Reddy, Usama Ahmed, Shaikh A. Razzak, Eid M. Al-Mutairi, Abdul Gani Abdul Jameel
Summary: In this work, a machine learning model using artificial neural networks (ANN) was developed to predict the threshold sooting index (TSI) of fuels containing oxygenated and hydrocarbon chemical classes. The model showed promising performance with a high correlation between predicted and observed TSI values.
Article
Green & Sustainable Science & Technology
Muhammad Muhitur Rahman, Mohammad Shahedur Rahman, Saidur R. Chowdhury, Alaeldeen Elhaj, Shaikh Abdur Razzak, Syed Abu Shoaib, Md Kamrul Islam, Mohammed Monirul Islam, Sayeed Rushd, Syed Masiur Rahman
Summary: The Kingdom of Saudi Arabia has seen consistent growth in industrial processes and product use (IPPU), leading to increasing emissions. This study analyzes the IPPU sector using time-series and cross-sectional analyses and identifies the leading source categories as petrochemical, iron and steel, and cement production. The study also estimates the emissions for the years up to 2050, projecting a range between 199 and 426 million tons of CO(2)eq. Saudi Arabia has initiated climate change adaptation and economic divergence initiatives, with a focus on the energy sector. The study suggests various mitigation opportunities for the IPPU sector, including energy and emissions efficiency, material efficiency, and demand management.
Article
Biotechnology & Applied Microbiology
Ahmed Altriki, Imtiaz Ali, Shaikh Abdur Razzak, Irshad Ahmad, Wasif Farooq
Summary: This study investigates CO2 biofixation and pyrolytic kinetics of microalga G. pectorale. The experimental results show that the highest rate of CO2 fixation occurs at a CO2 concentration of 2%. Multiple pyrolysis peaks were observed in the thermogravimetric analysis. Different model-free methods were used to calculate the activation energy, and the results were in good agreement with the experimental values. The multilayer perceptron-based artificial neural network regression model demonstrated excellent agreement with the experimental values of thermal decomposition.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Mohammed Omar Faruque, Mohammad Mozahar Hossain, Wasif Farooq, Shaikh Abdur Razzak
Summary: Scenedesmus dimorphus was used for tertiary treatment of municipal wastewater to remove nutrients while producing biomass with lipids for biofuel production. The effect of nitrogen to phosphorous ratios (N:P) in culture media, with and without CO2 supplementation, was investigated through batch experiments. Results showed that Case 2, with CO2 supplementation, produced higher biomass than Case 1. Scenedesmus dimorphus could remove nitrogen and phosphorous from wastewater in a CO2 environment and at the optimal N:P ratio. Total nitrogen removal ranged from 28% to 100% in Case 1 and from 60% to 100% in Case 2, depending on the N:P ratio. Total phosphorous removal ranged from 37% to 57% in both cases. Case 2 also had a higher lipid content of 29% in the biomass.
Article
Chemistry, Physical
Nahid Sultana, S. M. Zakir Hossain, Sumayh S. Aljameel, M. E. Omran, S. A. Razzak, B. Haq, M. M. Hossain
Summary: This study demonstrates the application of a hybrid Bayesian algorithm (BA) and support vector regression (SVR) as a potential super-learner tool (BA-SVR) for predicting biohydrogen production from food waste-originated feedstocks. The proposed BA-SVR models show better performance in predicting the biohydrogen and biomethane responses compared to the existing response surface methodology (RSM) models. The estimated low errors and high adj R2 values indicate reliable model predictions and excellent fitting of the model, respectively.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Saidur Rahman Chowdhury, Shaikh Abdur Razzak, Ikrema Hassan, S. M. Zakir Hossain, Mohammad Mozahar Hossain
Summary: The discovery of microplastics in freshwater and drinking water sources has raised concerns about their potential health risks and the effectiveness of water treatment facilities in removing them. This article discusses the sources, occurrence, and impacts of microplastics on human health and aquatic ecosystems, as well as the various techniques and strategies used for their detection and removal. It emphasizes the need for regulations and effective waste management strategies to reduce plastic consumption and protect the environment.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Multidisciplinary Sciences
Mohammed Omar Faruque, Mohammad Mozahar Hossain, Shaikh Abdur Razzak
Summary: Microalgae Scenedesmus dimorphus was cultivated in synthetic wastewater media to investigate its bioenergy potential. Batch experiments with different CO2 concentrations were performed for biomass generation. The highest biomass production was achieved under different CO2 feed concentrations. Cultivation of microalgae with CO2 supplementation significantly impacted lipid buildup in the biomass. Physicochemical characterization revealed that the biomass had a high heating value and low sulfur content, making it a potential fuel feedstock for environmentally friendly bioenergy production.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Zainab H. A. Alnaser, Saidur R. Chowdhury, Shaikh A. Razzak
Summary: This study aims to fill the research gap in constructed wetlands (CWs) technology in hot, arid, and dry climates, and explore the feasibility of introducing this technology into wastewater treatment systems in Saudi Arabia.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
