Article
Green & Sustainable Science & Technology
Patrick Brandl, Mai Bui, Jason P. Hallett, Niall Mac Dowell
Summary: Absorption-based separation processes are crucial for deep decarbonisation, but the anticipated cost reduction has not been achieved. Previous research focused on developing novel aqueous blends of amines, which failed to address the issue of high water content in solvents. This study presents a thought-experiment using a hypothetical solvent to determine the limit of cost reduction.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Environmental Sciences
Meixuan Wu, Ziyu Zhao, Peng Zhang, Mingding Wan, Jilin Lei, Bo Pan, Baoshan Xing
Summary: Research on the emission characteristics of environmental persistent free radicals (EPFRs) from diesel engines at different working conditions is limited. Lower engine speed and higher altitude are generally associated with higher PM10 emissions with more stable and ordered structures. EPFRs intensity in particles showed no significant change in dark, and over 70% of the EPR signals survived under UV light in a one-month aging simulation, suggesting potential long lasting and widespread risks that should be investigated extensively.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Chemistry, Physical
Yang Wang, Xiaohu Zhou, Long Liu
Summary: This study investigated the combustion performance of ammonia and hydrogen mixtures in a medium-speed marine diesel engine, proposing a scheme to reduce NOx emissions by lowering combustion temperature, introducing EGR, and combining with post-treatment technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Review
Energy & Fuels
Xiang Li, Zhijun Peng, Yiqiang Pei, Tahmina Ajmal, Khaqan-Jim Rana, Abdel Aitouche, Raouf Mobasheri
Summary: As global warming worsens, oxy-fuel combustion is seen as a promising solution to reduce carbon emissions in IC engines. Optimizing oxygen concentration, EGR rate, ignition timing, compression ratio, fuel injection, and water injection is crucial for achieving this goal.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Chao Feng, Rong Zhu, Guangsheng Wei, Kai Dong, Jianfeng Dong
Summary: This study examines and compares the CO2 emissions of CO2-capture converter smelting processes based on a lime kiln in China, and proposes methods for reducing emissions. The results show that chemical absorption has higher CO2 emissions than pressure swing adsorption, and the participation of CO2 in converter smelting can reduce emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Marine
Kang Woo Chun, Myongho Kim, Jae-Jung Hur
Summary: As regulations on emissions from ships become stricter, there is a growing interest in finding alternative propulsion systems and fuels. This study focused on the development and testing of a generator using LPG fuel for an eco-friendly electric propulsion system. The results and test operation procedure can be applied to the development of different capacities of small and medium-sized LPG engines, and have significant implications for converting marine engines.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Fei Yu, Xiaodong Chu, Donglei Sun, Xiaoming Liu
Summary: A low-carbon optimal dispatch model is proposed in this study, incorporating carbon capture and storage technology and the uncertainty of wind power. By accurately calculating carbon dioxide emissions and incorporating carbon tax mechanism, significant reduction in carbon emissions of coal-fired units can be achieved.
Article
Green & Sustainable Science & Technology
Jasper A. Ros, Eirini Skylogianni, Vincent Doedee, Joan T. van den Akker, Alex W. Vredeveldt, Marco J. G. Linders, Earl L. Goetheer, Juliana G. M-S Monteiro
Summary: The International Maritime Organization has set clear objectives for drastically reducing greenhouse gas emissions in the maritime sector in the coming decades. Ship-based carbon capture (SBCC) technology can be a viable solution to significantly reduce CO2 emissions in the maritime sector in the short term.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Raslan A. Alenezi, A. M. Norkhizan, R. Mamat, Erdiwansyah, G. Najafi, Mohamed Mazlan
Summary: The research found that adding MWCNTs to biodiesel-diesel blends can significantly reduce CO2 emissions and decrease NOx emissions, especially for B20 and B30 samples. However, for B10 blends, an increasing trend of NOx emissions was reported with an increase in MWCNTs content.
Article
Thermodynamics
Pulkit Kumar, Ajit Kumar Parwani, Mohammad Mehdi Rashidi
Summary: This research presents a theoretical design and experimental investigation of a Diesel engine retrofitted with devices for simultaneous mitigation of NOx and CO2 emissions. The results show that the combination of EGR and carbon capture unit can effectively reduce NOx emissions while capturing CO2, providing a potential solution to meet the stringent European Standard norms.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Multidisciplinary
Babak Keivani, Afsin Gungor
Summary: This study conducted a detailed techno-economic assessment of Turkish domestic coal, biomass, and torrefied biomass as fuel for oxygen combustion in the CAN Power plant. The results showed that oxygen-enriched combustion is more economical in terms of carbon capture and storage, with slightly lower costs in electricity, CO2 avoidance, and CO2 capture compared to air combustion. The study suggests that 30% oxygen-enriched co-combustion can be a short-term economic retrofitting option for existing power plants.
JOURNAL OF CO2 UTILIZATION
(2022)
Review
Chemistry, Multidisciplinary
Friday O. Ochedi, Jianglong Yu, Hai Yu, Yangxian Liu, Arshad Hussain
Summary: Anthropogenic emissions of greenhouse gases lead to global warming, ocean acidification, polar ice melting, sea level rise, droughts, and hurricanes, threatening human health and the global economy. To combat this, cost-effective technologies for CO(2) capture are necessary. Current research focuses on developing more economical, effective, green, and sustainable technologies for CO(2) capture. Various methods based on solutions, solvents, and processes have been explored to enhance CO(2) absorption performance, with a particular interest in incorporating membrane and microencapsulation technologies to improve absorption selectivity.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Thermodynamics
J. R. Serrano, J. Martin, J. Gomez-Soriano, R. Raggi
Summary: Oxy-fuel combustion is a promising technology for reducing emissions in powerplants and promoting carbon capture and storage. The use of Mixed Ionic-Electronic Conducting membranes can help separate pure oxygen, leading to improved combustion efficiency with appropriate operating strategies.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Environmental Sciences
Song Zhou, Jianjun Ren, Hongyuan Xi, Shijian Lu, Majed Shreka, Yunlong Zhu, Boyang Zhang, Ze Hao
Summary: This study developed an absorbent for onboard carbon capture that can ensure a high absorption rate and reduce the energy consumption of the desorption process. Experimental results showed that the SarK-K2CO3 composite solution had the best performance in both absorption and desorption processes among the amino acid salts and organic amine activators.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Energy & Fuels
Milad Hosseinpour, Mohammad Javad Shojaei, Mohsen Salimi, Majid Amidpour
Summary: The consumption of fossil fuels leads to significant anthropogenic CO2 emission into the atmosphere, causing climate change and harmful impacts on human life. Carbon capture and storage technologies, particularly absorption-based post-combustion carbon capture (PCC), have emerged as solutions to reduce atmospheric CO2 concentrations. This article reviews the recent research progress on applying machine learning (ML) methods to PCC absorption-based technologies and proposes a roadmap for future research in this area.
Article
Thermodynamics
Dhinesh Thanganadar, Francesco Fornarelli, Sergio Camporeale, Faisal Asfand, Jonathon Gillard, Kumar Patchigolla
Summary: Integration of thermal energy storage with CSP plant can stabilize energy generation; sCO(2) cycles reduce cost and design guidelines aid in optimal cycle selection.
Article
Environmental Sciences
Kalu Samuel Ukanwa, Kumar Patchigolla, Ruben Sakrabani
Summary: This study focuses on the reuse of resultant residues from thermal processes and the economic optimization of waste revaluation. The economic analysis and process optimization were conducted using simulation software and statistical tools, providing the return on investment and payback period for different processes. The study also evaluated the potential of palm waste ash as an alternative to chemical fertilizers and confirmed its effectiveness. The results suggest that utilizing such waste in the activated carbon market is a viable business option.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Applied
Shuang Yue, Chunbo Wang, Yulin Huang, Ziyang Xu, Jiaying Xing, Edward J. Anthony
Summary: Oxy-steam combustion is a promising technology for reducing CO2 emissions. This study investigated the transformation and release of nitrogen under oxy-steam conditions, revealing that char prepared in a N-2/H2O atmosphere has higher nitrogen content compared to a N-2 atmosphere. The presence of OH radicals inhibits the transformation of N-Q to N-6 and promotes the conversion of N-6 to N-5, ultimately leading to lower emissions of HCN and NH3 under N-2/H2O conditions.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jiaying Xing, Chunbo Wang, Yulin Huang, Shuang Yue, Edward J. Anthony
Summary: This study investigated the effect of W and Mo modification on arsenic adsorption over Cu/gamma-Al2O3 catalyst. Results showed that W and Mo modification improved the NO conversion activities at low temperatures and reduced the arsenic adsorption on Cu/gamma-Al2O3 catalyst. W modification had a stronger promotion effect on arsenic resistance compared to Mo modification, and the proportion of As5+ on the W-Cu/gamma-Al2O3 surface was larger than that on the Mo-Cu/gamma-Al2O3 surface. Theoretical simulations revealed that Al2O3 adsorption on Mo-Cu/gamma-Al2O3 surface was stronger than that on W-Cu/gamma-Al2O3 surface.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Shuang Yue, Chunbo Wang, Ziyang Xu, Dong Wang, Fei Zheng, Edward J. Anthony
Summary: This study compared NO emissions during oxy-steam and air combustion of coal char, emphasizing the role of H2O and its resulting radicals in NO formation and reduction reactions. High concentrations of H2O promote the formation of OH radicals and hydroxyl groups during oxy-steam combustion, affecting NO formation and reduction reactions and ultimately NO emissions.
COMBUSTION AND FLAME
(2022)
Article
Thermodynamics
Patricia Palenzuela, Lidia Roca, Faisal Asfand, Kumar Patchigolla
Summary: The European Commission's new challenge is to limit water consumption in Concentrating Solar Power (CSP) plants, with hybrid cooling systems seen as a potential solution. Experimental evaluation of a hybrid cooling pilot plant showed significant water savings of up to 67% at high ambient temperatures and 80% thermal load. Optimal operating strategies achieving a tradeoff between low water and electricity consumption were identified, with parallel configuration being the most efficient in most cases.
Article
Thermodynamics
Vivek Narisetty, Sanjay Nagarajan, Siddharth Gadkari, Vivek Ranade, Jingxin Zhang, Kumar Patchigolla, Amit Bhatnagar, Mukesh Kumar Awasthi, Ashok Pandey, Vinod Kumar
Summary: In this study, bread waste was used as a feedstock for fermentative production of ethanol and biomethane. Glucose was obtained by acid and enzymatic saccharification of bread waste, and then fermented into ethanol. The solid residue after fermentation was subjected to anaerobic digestion to produce biomethane. The study showed that bread waste is a promising feedstock for sustainable biofuel production.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Hisham Al Baroudi, Ryota Wada, Masahiko Ozaki, Kumar Patchigolla, Makoto Iwatomi, Kengi Murayama, Toru Otaki
Summary: This study constructed a cryogenic test facility to handle CO2 near the triple point, replicating emergency release coupler principles during shutdown. Findings showed a rapid discharge of liquefied CO2 upon separation of the test vessel, with dispersion in a 'tulip' shape and formation of CO2 solids, posing risks to surrounding personnel.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Energy & Fuels
Xuan Tao, Dhinesh Thanganadar, Kumar Patchigolla
Summary: This paper investigates single-stage ammonia/water absorption chillers, develops a numerical model based on heat exchanger performance, and validates the model with experimental data. The detrimental effects of refrigerant impurity under different operating conditions are analyzed quantitatively, and the thermodynamic performances of a basic cycle and three advanced cycles for sub-zero refrigeration are compared.
Article
Chemistry, Analytical
Kristofer Poirier, Najah Al Mhanna, Kumar Patchigolla
Summary: This study analyzes a novel multi-crystallization system for achieving zero liquid discharge (ZLD) in desalination plants. The system uses an innovative heat recovery system with a heat transfer fluid and a compressor to reduce energy consumption. The results show that the system can efficiently recover water and high-purity salts, and generate additional income through resource recovery. However, the levelized cost of water for the multi-crystallization system is slightly higher than that of the conventional ZLD system.
Article
Thermodynamics
Shuang Yue, Chunbo Wang, Edward J. Anthony
Summary: A detailed investigation into the intrinsic kinetics mechanisms for the catalytic reduction of NO by Na-loaded char was conducted using DFT and TST calculations. The results revealed the essential role of the catalytic active center -O -Na in the interaction between NO and carbonaceous surface, with sensitivity to temperature and NO-to-CO stoichiometric ratio. Inspired by the findings, a conceptual approach for improving the catalytic performance of Na on NO reduction was proposed and shown to be theoretically feasible.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2023)
Article
Chemistry, Multidisciplinary
Robin Abu, Kumar Patchigolla, Nigel Simms, Edward John Anthony
Summary: The use of hydrocarbon fuels and natural gas flaring is increasing due to population growth and rising standards of living. This paper aims to establish a framework and management tool to reduce regular gas flaring in Nigeria. The tool incorporates techno-economic analysis to assist operators and investors in making more profitable investment decisions.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Environmental
Ke Wang, Jie Chen, Tianyu Wang, Jie Hong, Pengfei Zhao, Edward J. Anthony
Summary: Capture and conversion of CO2 from optimal scenarios into fuels or chemicals provide a viable solution to combat climate change. The proposed synergistic integration of catalytic calcium-looping gasification of biochar can capture and in situ convert CO2. Experimental tests and characterizations showed that the mixture of limestone and K2CO3-impregnated biochar can enhance decarbonation kinetics and CO yield, maintaining stable CO2 conversion at lower temperatures. The process demonstrated practical scalability and cost-effectiveness, opening a unique direction for net-negative emission.
CHEMICAL ENGINEERING JOURNAL
(2023)
Proceedings Paper
Energy & Fuels
Christopher Sansom, Kumar Patchigolla, Kranthi Jonnalagadda, Peter King
Summary: This article describes the design of a large-scale thermal seawater desalination demonstrator unit for arid locations with a medium-to-high direct normal irradiance (DNI). The majority of thermal energy is provided by a conventional parabolic trough field with a capacity of 4MWt. The desalination sub-system consists of a 3-effect multi-effect distillation (MED), with the first stage being a large 20-meter diameter glass and steel-structured geodesic transparent dome. The thermal energy is supplemented by direct sunlight transmitted through the dome and by a group of small heliostats focused on the dome. The prototype is currently under construction in Neom, Saudi Arabia.
SOLARPACES 2020 - 26TH INTERNATIONAL CONFERENCE ON CONCENTRATING SOLAR POWER AND CHEMICAL ENERGY SYSTEMS
(2022)