Article
Agricultural Engineering
J. V. Tirkey, Deepak Kumar Singh
Summary: This study investigates the processing of waste poultry litter pellet biomass for the generation of enriched hydrogen syngas using biomass gasifier. Model validation and sensitivity analysis were performed, and multi-objectives optimization of gasification parameters was carried out using RSM. The results show good agreement and optimized values of key parameters.
BIOMASS & BIOENERGY
(2022)
Article
Thermodynamics
Leijie Fu, Yan Cao, Yu Bai
Summary: The study developed an ASPEN Plus model of biomass gasification considering the kinetics of reactions and tar cracking mechanism. Parametric study revealed that under specific operational conditions, maximum H-2 content can be achieved.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Bernardino Novais, Ana Ramos, Abel Rouboa, Eliseu Monteiro
Summary: A biomass gasification model was developed to optimize green hydrogen production using a water-gas shift (WGS) reactor. Results showed that the approach focusing on hydrogen production yielded a favorable outcome, with a hydrogen content of 52.5%. This study provides important reference data for future biomass gasification projects for green hydrogen production.
Article
Energy & Fuels
Ouissal Bourguig, Ana Ramos, Khalid Bouziane, Mohamed Asbik, Eliseu Monteiro, Abel Rouboa
Summary: This article discusses the current situation of municipal solid waste generation and management in Morocco, and presents a model for hydrogen production from municipal solid waste and biomass using co-gasification technology. The research findings indicate that increasing gasification temperature and steam to feedstock ratio can enhance hydrogen production.
Article
Chemistry, Multidisciplinary
Nhut M Nguyen, Falah Alobaid, Bernd Epple
Summary: A comprehensive process model is proposed to simulate the steam gasification of biomass in a bubbling fluidized bed reactor, and validated with experimental data. The model accurately predicts hydrogen production, gas yield, and carbon conversion efficiency under different operating conditions.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
Amalinalli Velazquez-Hernandez, Javier E. Aguillon-Martinez
Summary: The study focuses on the gasification of four biomasses, including pine sawdust, bamboo dust, rice husk, and cane bagasse, using the Aspen Plus software. The simulation results show that rice husk has the lowest error per difference and the gasification of sargassum biomass can produce syngas with a lower heating value.
Article
Chemistry, Physical
Duygu Gunduz Han, Kaan Erdem, Adnan Midilli
Summary: This study investigated the effects of different types of waste plastics, equivalence ratio, operating temperature, and pressure on hydrogen production. The optimal conditions for achieving maximum hydrogen yield in the waste plastic gasification process were determined through simulation and experimental verification.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
M. Puig-Gamero, D. T. Pio, L. A. C. Tarelho, P. Sanchez, L. Sanchez-Silva
Summary: The direct gasification process of biomass in a bubbling fluidized bed reactor was simulated and validated using different models for pyrolysis, combustion, and reduction. The simulation results showed good agreement with experimental results, particularly for gases such as CO, CO2, H-2, CH4, and C2H4. However, the accuracy of H-2 gas prediction was found to be the lowest among the gases analyzed.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Mohammad Shamsi, Ahmed Abbas Obaid, Saman Farokhi, Ahmad Bayat
Summary: This study focuses on improving the energy efficiency and hydrogen production from lignocellulosic biomass gasification tars through process modeling and simulation. The integrated process was found to be carbon neutral, with significant increases in energy efficiency and hydrogen production compared to the base process.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Yan Cao, Yu Bai, Jiang Du
Summary: East Asia is facing a significant population growth, posing challenges to traditional waste management systems. Gasification has gained attention for its ability to convert carbon-based residues into valuable gas at a lower cost compared to other technologies. This study used an ASPEN plus model to simulate the steam co-gasification of polyethylene (PE) and pine (PI) at various temperatures, steam/waste ratios, and PE contents. The results were compared with experimental data, showing good agreement. Increasing the gasifier temperature and steam/waste ratio led to higher hydrogen production and lower tar content in the syngas. The addition of PE increased hydrogen content and yield, while also increasing tar concentration.
JOURNAL OF THE ENERGY INSTITUTE
(2024)
Article
Chemistry, Physical
Pali Rosha, Sandeep Kumar, Shruti Vikram, Hussameldin Ibrahim, Ala'a H. Al-Muhtaseb
Summary: This study explores the co-gasification of algae-plastic waste and its impact on syngas composition and carbon conversion efficiency. The simulation results demonstrate that increasing gasifier temperature promotes the formation of H-2 and CO, while plastic loading enhances H-2 production. However, a higher equivalence ratio reduces the yield of H-2 and CO, leading to increased CO2 formation. The synergistic effect of biomass and plastic waste significantly improves the H-2 content and heating value of the gaseous product, making it an energy-efficient renewable fuel.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Carlos A. Diaz Gonzalez, Diego C. de Oliveira, Diego M. Yepes, Leonardo E. Pacheco, Electo E. Silva
Summary: The development and improvement of biomass gasification processes have been accelerated by the use of computational tools for process simulation. This study presents an Aspen Plus model of a small-scale downdraft gasifier and successfully adjusts the model to accurately simulate the gasification of different biomasses.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Thermodynamics
Pali Rosha, Hussameldin Ibrahim
Summary: This study introduces an innovative simulation method for effectively utilizing paper-mill sludge in the production of energy-enriched renewable fuel through co-gasification. A co-gasification model based on Aspen Plus was developed to examine the synergetic effects of biomass and paper-mill sludge co-gasification. The model was validated against experimental data and showed good agreement. Sensitivity analysis revealed optimal conditions for maximum H2, CO, LHV, and CCE content in biomass gasification. The model also showed that co-gasification enhanced the H2 proportion and reduced CO content.
Article
Chemistry, Physical
Vera Marcantonio, Marcello De Falco, Mauro Capocelli, Alvaro Amado-Fierro, Teresa A. Centeno, Enrico Bocci
Summary: Concerns about energy security, energy prices, and climate change have led to scientific research on renewable energy sources and carbon capture technologies. This paper investigates the coexistence of biomass gasification, carbon capture, and conversion technologies for hydrogen production from biomass waste. The proposed model aims to optimize the performance of the plant by varying operating parameters, and the carbon footprint of the plant is lower than the limit set by the European Commission.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Environmental Sciences
Yan Cao, Yu Bai, Jiang Du
Summary: Biomass was studied as a potential renewable energy source, and a model was developed to predict gasification characteristics and performances. The study found that gasification temperature significantly influenced gas composition and product yields, while equivalence ratio and steam/biomass ratio affected gasification characteristics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Studies
Feng Wang, Tayyaba Rani, Asif Razzaq
Summary: This study examines the effects of fiscal decentralization, green technology innovation, and institutional efficiency on carbon emissions. The results show that these factors have mitigating effects on emissions, but their effects vary across different emission quantiles.
ENERGY & ENVIRONMENT
(2023)
Article
Environmental Sciences
Lijie Du, Asif Razzaq, Muhammad Waqas
Summary: Small- and medium-sized enterprises (SMEs) in China have been severely impacted by the COVID-19 outbreak, and this research sheds light on its long-term effects on small businesses globally. The study finds that COVID-19 has significantly negative effects on profitability, operations, economy, and access to finance for SMEs. Additionally, the study highlights the importance of external funding in enabling SMEs to succeed through technological innovation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Studies
Chien-Chiang Lee, Farzan Yahya, Asif Razzaq
Summary: This study investigates the effects of financial liberalization, human capital, and militarization on green growth, and finds a stable and long-term relationship between them. Financial liberalization and human capital have a positive impact on green growth, while militarization has a negative impact. The interaction effects show a more negative impact of human capital and a more positive impact of militarization in the presence of higher financial openness.
ENERGY & ENVIRONMENT
(2023)
Article
Environmental Sciences
Najia Saqib, Arshian Sharif, Asif Razzaq, Muhammad Usman
Summary: This study examines the role of technological innovation in reducing ecological footprint and finds that technological innovation can minimize ecological footprint. Additionally, increased usage of human capital and renewable energy is associated with lower ecological footprint.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Shahid Ali, Qingyou Yan, Asif Razzaq, Irfan Khan, Muhammad Irfan
Summary: Adopting biogas technology in a developing country like Pakistan is a complex process. The government has taken steps to address energy issues by increasing biogas facilities and identifying barriers to the deployment of biogas plants. Study results suggest that reducing economic and governmental barriers and encouraging farmers to effectively use biogas plants are crucial for promoting the implementation of biogas technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Muhammad Arif, Urooj Fatima, Abdul Rauf, Zahoor Hussain Farooqi, Mohsin Javed, Muhammad Faizan, Shahid Zaman
Summary: This study reports the synthesis of a new copper-based 2D metal-organic framework using a newly synthesized ABA-MA ligand. The resulting material exhibits excellent photocatalytic activity for degrading organic dyes, making it a promising candidate for wastewater treatment.
Article
Geosciences, Multidisciplinary
Najia Saqib, Ilhan Ozturk, Muhammad Usman, Arshian Sharif, Asif Razzaq
Summary: This study investigates the relationship between economic growth and ecological footprint for 16 European countries from 1990 to 2020. The empirical analysis reveals some correlations, including a negative correlation between foreign direct investment and ecological footprint, and an inverted U-shaped curve between GDP and ecological footprint, supporting the environmental Kuznets Curve hypothesis. Furthermore, renewable energy is found to have a negative correlation with ecological footprint, while energy structure has a positive correlation.
Article
Environmental Studies
ChangZheng Li, Asif Razzaq, Ilhan Ozturk, Arshian Sharif
Summary: This study analyzes the influence of financial technologies, digitalization, institutional quality, and human capital on natural resources rent in selected OECD economies from 2002 to 2020. The study utilizes moments quantile regression (MMQR) for explanatory variables at different quantiles and ordinary least squares (OLS) regression for long-run coefficients. The results indicate the impact of financial technologies, digitalization, human capital, and institutional quality on natural resources dependency, with varying effects at different quantiles. Valuable policy recommendations are drawn from these findings.
Article
Economics
Nabila Abid, Fayyaz Ahmad, Junaid Aftab, Asif Razzaq
Summary: This study examines the effects of climate change mitigation on the economic, environmental, and social development of 18 European countries. The results show that climate change mitigation has no overall effect on economic growth, but only high and moderate environmental performance ranking countries can spur economic growth and social development. Low environmental performance ranking countries reveal no impact of climate change mitigation. Climate change mitigation promotes environmental development for all countries. Trade openness and energy choices are crucial to ensure climate change mitigation efforts. The study suggests that the European Union needs strict policies to increase the share of renewable energy and promote the integration of climate mitigation technology.
Article
Economics
Asif Razzaq, Arshian Sharif, Ilhan Ozturk, Xiaodong Yang
Summary: Under the pressure of dual carbon objectives, the central government continues to prioritize ecological considerations in local governments' incentive and penalty systems. The central inspections of environmental protection (CIEP) program has become an increasingly important tool for environmental governance. This study evaluates the impact of CIEP policy intervention on carbon emissions intensity in 233 Chinese cities from 2008 to 2019, finding that CIEP's enforcement significantly reduces carbon emissions intensity by improving energy utilization efficiency and intensifying local government environmental attention.
Article
Business
Claire J. Li, Asif Razzaq, Muhammad Irfan, Adeel Luqman
Summary: This study investigates the relationship between green innovation, environmental regulations, and green investment using data from 30 regions in China between 2011 and 2019. The findings reveal that environmental regulations can stimulate green innovation both locally and in surrounding regions. Moreover, green investment has a positive feedback effect on both environmental regulations and green innovation.
TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE
(2023)
Article
Environmental Studies
Nana Miao, Arshian Sharif, Ilhan Ozturk, Asif Razzaq
Summary: This study explores the importance of natural resources, fiscal policy, R&D spending, and ecological governance in driving green growth in G7 countries from 1990 to 2020. The results show that fiscal policy, R&D spending, and ecological governance have a positive impact on green growth, while natural resources have inhibitory effects. The positive influence of fiscal policy and ecological governance is higher at lower quantiles, while the inhibitory effects of natural resources are higher at lower quantiles. However, the negative impact of natural resources can be neutralized with the integration of ecological governance.
Article
Environmental Studies
Shu Lin, Asif Razzaq, Kefu Yi
Summary: Global climate change and environmental pollution have prompted mankind to develop new sustainable growth models, which rely on resource efficiency and sustainable resource management. This research analyzes the impact of productive capacity indices (PCI) and natural resources on the ecological sustainability of emerging Belt and Road countries from 2000 to 2018. The study utilizes the system generalized method of moments (Sys-GMM) and the Feasible generalized least squares (FGLS) estimators to examine the association among the variables. The findings suggest that cumulative PCI and technological innovation have a positive impact on emissions reduction, while natural resources contribute to emissions. Sub-indicators of PCI show varying outcomes. Productive capacities in human capital, ICT, energy, and governance promote ecological sustainability, while transport, private sector development, and structural change increase emissions. The Augmented Mean Group estimator also supports these findings. This research highlights the importance of improving operational efficiencies and productive capacities for better ecological outcomes.
Article
Environmental Studies
Zhang Yi, Wenwu Zhou, Asif Razzaq, Yao Yang
Summary: Land resource intensive use (LRIU) is the future direction of land natural resource management, and it has significant implications for sustainable development. This study examined the impact mechanism of LRIU on sustainable development using China's provincial data from 2008 to 2020. The results showed that LRIU promotes sustainable development in both quantitative and qualitative terms, and these effects remain valid after robustness and endogeneity tests. However, the influences of LRIU vary substantially across geographic locations and development stages. LRIU achieves sustainable development by curbing the inflated industrial restructuring and driving technological progress, suggesting that LRIU policy should be implemented according to site-specific conditions.
Article
Development Studies
Xiaodong Yang, Yang Xu, Asif Razzaq, Desheng Wu, Jianhong Cao, Qiying Ran
Summary: The digital economy plays a significant role in driving industrial green transformation, particularly in eastern-central China. It enhances public awareness of environmental issues and stimulates innovation in green technologies.
SUSTAINABLE DEVELOPMENT
(2023)
