Article
Chemistry, Physical
Miao Gong, Aixin Feng, Linlu Wang, Mengqi Wang, Jinxiang Hu, Yujie Fan
Summary: Hydrothermal pretreatment and supercritical water gasification were combined to treat dewatered sludge for hydrogen production. Optimal pretreatment conditions were found to transfer 31% of carbon in sludge into liquid products, and the subsequent supercritical water gasification process with catalysts showed improved H-2 selectivity, yield, and energy recovery.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Environmental
Gaoyun Wang, Le Wang, Linhu Li, Yunan Chen, Wen Cao, Hui Jin, Zhiwei Ge, Liejin Guo
Summary: The efficiency of oil removal and the diffusion characteristics of oil in oily sludge particles under supercritical water treatment were investigated. The results showed that increasing the treatment duration and reducing the particle diameter significantly improved the oil removal efficiency, while the treatment temperature had little influence. A diffusion mechanism was proposed and a mathematical model was developed to represent the heat and mass transfer in the oily sludge particles. It was found that the oil concentration in supercritical water and the particle diameter had a considerable influence on the oil removal efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Analytical
Linhu Li, Xujun Li, Wen Cao
Summary: Supercritical water gasification (SCWG) is a clean technology for disposal and energy recovery of oily sludge. The study investigates the gaseous products of SCWG of oily sludge at different temperatures and residence times, and develops a kinetic model to optimize the production of H2 and CH4. The results show that H2 yield increases with temperature and residence time, while CH4 yield and carbon gasification efficiency peak at 600 degrees C. The liquid products contain alkene, acetone, benzene, toluene, ethyl -benzene, xylene, phenolic substances, and PAHs.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2023)
Article
Environmental Sciences
Chenyu Wang, Chaoyue Wu, Hao Zhang, Junbei Lai, Xinyue Luo, Yaoyun Liang, Jinshui Tian
Summary: The study investigated the reaction process of petrochemical sludge under hydrothermal conditions to explore its feasibility of disposal. The experiments showed that a significant amount of oil in the sludge could be decomposed into aqueous and gas products, providing an experimental basis for the hydrothermal treatment of petrochemical sludge.
Article
Green & Sustainable Science & Technology
Zhong Chen, Kun Tong, Chunlan He, Ming Xue, Chong Lyu, Hongzhen Chen, Qiao Chen, Yuanjian Xu
Summary: In this study, near-/supercritical water was utilized as a green medium for extracting and upgrading heavy oil from oil-based drill cuttings. The addition of industrial wastes such as nickel-rich electroplating sludge showed promising catalytic effects in improving the quality of the recovered oil. The active components in these wastes, such as metallic oxides and ferrite, played a crucial role in the upgrading reactions, resulting in high quality oil with zero asphaltene and extremely low heteroatom content.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Miao Gong, Zhen Li, Mengqi Wang, Aixin Feng, Linlu Wang, Shoujun Yuan
Summary: This research investigated how different types and concentrations of Lewis acids affect gas yield and composition in supercritical water gasification of dewatered sewage sludge. AlCl3 showed the best catalytic effect, significantly increasing hydrogen and total gas yield. Adding Lewis acids improved gas yields, with AlCl3 reducing the required temperature for hydrogen generation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
S. Aggarwal, M. Hakovirta
Summary: Research suggests that utilizing supercritical CO2 extraction for drying sludge can result in a higher heating value than brown coal, as well as a significant reduction in moisture content in a short period of time. This method is shown to be less energy-intensive compared to traditional thermal and other drying methods, while also extracting micro pollutants to meet energy application standards.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Physical
Zhen Li, Miao Gong, Mengqi Wang, Aixin Feng, Linlu Wang, Peiyong Ma, Shoujun Yuan
Summary: The use of AlCl3-H2O2 as a catalyst can significantly increase the hydrogen production rate in the supercritical water gasification of dewatered sewage sludge. The hydrogen generated can be effectively utilized. AlCl3-H2O2 has varying effects on the hydrogen production of different organic compounds, so the catalyst should be selected based on specific circumstances.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Weijin Gong, Lei Huang, Lina Guo, Zizheng Zhou, Fuwang Zhao, Yang Li, Juexiu Li, Chaozhi Qi
Summary: In this study, gasification of textile sludge in supercritical water for hydrogen production was investigated. Experimental results indicate that hydrogen yield increases with rise of temperature. The addition of K2CO3 catalyst is beneficial for hydrogen yield. The reaction mechanism and kinetics of textile sludge gasification in supercritical water were also explored.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Yunan Chen, Lei Yi, Wenwen Wei, Hui Jin, Liejin Guo
Summary: The study on sewage sludge gasification in supercritical water found that temperature is the main factor affecting hydrogen yield, gasification efficiency, carbon gasification efficiency, and hydrogen yield potential. Additionally, the addition of mixed catalysts can promote reactions and the formation of hydrogen.
Article
Chemistry, Physical
Yulong Wang, Shuzhong Wang, Hongyuan Qi, Huayi Jiang, Yuanwang Duan
Summary: The harmless treatment and resource utilization of oily sludge are crucial for the sustainable and low-carbon development of the petroleum industry. This study examined the supercritical water gasification (SCWG) of oily sludge for hydrogen production and investigated the effects of critical factors such as reaction temperature, initial pressure, retention time, and feed concentration on hydrogen yield potential. The results showed that longer retention time, higher temperature, and lower feed concentration could enhance hydrogen production from oily sludge by SCWG.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Agronomy
Jelena Milanovic, Marko Malicanin, Vesna Rakic, Nenad Jevremovic, Ivana Karabegovic, Bojana Danilovic
Summary: Ultrasound-assisted extraction method resulted in higher yield and better antioxidant capacity and oxidative stability of Prokupac grape seed oil compared to cold pressing. The bioactive composition of Prokupac grape seed oil showed significant differences compared to other grape varieties, with higher content of saturated fatty acids and alpha-tocopherol, leading to the best antioxidative capacity. Prokupac grape seed has great potential for the isolation of nutritious and bioactive valuable oil.
Article
Chemistry, Physical
Jialing Xu, Zening Cheng, Changsheng Ren, Lei Yi, Wenwen Wei, Hui Jin, Liejin Guo
Summary: This paper aims to establish a reaction kinetic model for supercritical water gasification (SCWG) and provide better guidance for optimal industrial reactor design. The model is validated by experimental data and predicts the indicators of carbon gasification efficiency and gas yield versus residence time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Engineering, Chemical
Zeeshan Ul Haq, Hafeez Ullah, Muhammad Nouman Aslam Khan, Salman Raza Naqvi, Muhammad Ahsan
Summary: The study highlights the importance of understanding the mechanism and optimization methods for hydrogen production through supercritical water gasification. By integrating four machine learning methods and genetic algorithm, the study successfully predicts the hydrogen yield and identifies the influential parameters such as temperature, moisture content, and pressure.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Environmental Sciences
Zhi-Xiang Xu, Yi Tan, Xue-Qin Ma, Bin Li, Yong-Xing Chen, Bo Zhang, Sameh M. Osman, Jing-Yang Luo, Rafael Luque
Summary: This study presents a method for designing wood bio-adhesives using sewage sludge extracts (SSE). The SSE was obtained from sewage sludge using deep eutectic solvents, and then processed with glycerol triglycidyl ether (GTE) to disrupt protein structure. The bio-adhesive produced had sufficient wet shear strength and improved quality through Maillard reaction and dehydration. This method offers a more environmentally friendly and economically efficient approach for utilizing sewage sludge and developing bio-adhesives for the wood industry.
ENVIRONMENTAL RESEARCH
(2023)
Article
Energy & Fuels
Siauw H. Ng, Mustafa Al-Sabawi, Jinsheng Wang, Hao Ling, Ying Zheng, Qiang Wei, Fuchen Ding, Edward Little
Article
Multidisciplinary Sciences
Siauw H. Ng, Nicole E. Heshka, Yi Zhang, Edward Little
JOVE-JOURNAL OF VISUALIZED EXPERIMENTS
(2016)
Article
Geography, Physical
Daniel J. Utting, Brent C. Ward, Edward C. Little
Article
Engineering, Geological
Vladimir E. Glotov, Jiri Chlachula, Ludmila P. Glotova, Edward Little
ENGINEERING GEOLOGY
(2018)
Article
Geography, Physical
Jiri Chlachula, Edward Little
QUATERNARY INTERNATIONAL
(2011)
Article
Energy & Fuels
Viet Nguyen-Le, Hyundon Shin, Edward Little
Article
Chemistry, Physical
Siauw H. Ng, Nicole E. Heshka, Ying Zheng, Hao Ling, Jinsheng Wang, Qianqian Liu, Edward Little, Fuchen Ding, Hui Wang
Article
Computer Science, Interdisciplinary Applications
Zhuoheng Chen, Xiaojun Liu, Jijin Yang, Edward Little, Yu Zhou
COMPUTERS & GEOSCIENCES
(2020)
Article
Geography, Physical
Jiri Chlachula, Maksim Y. Cheprasov, Gavril P. Novgorodov, Theodor F. Obada, Edward Little
Summary: Research in the Kolyma region has uncovered Pleistocene fauna, prehistoric human occupation sites, and evidence of landscape dynamics during the Last Glacial to Early Holocene period. This information sheds light on the environmental conditions and human activities in northeast Siberia.
Article
Geochemistry & Geophysics
Hyeonsu Shin, Viet Nguyen-Le, Min Kim, Hyundon Shin, Edward Little
Summary: This study developed a production-forecasting model to estimate the decline parameters of a shale gas reservoir in Canada. By analyzing significant reservoir and hydraulic fracture parameters, the model showed high predicted R2 values on cumulative production.
Article
Green & Sustainable Science & Technology
Wanju Yuan, Zhuoheng Chen, Stephen E. Grasby, Edward Little
Summary: Closed-loop geothermal systems can provide reasonable temperature and heat duty for over 30 years with multiple laterals, but their sensitivity to reservoir thermal conductivity controls outlet temperature and interference between wells over time, while resident time in the horizontal section dictates heat transport efficiency.
Article
Chemistry, Physical
Siauw H. Ng, Nicole E. Heshka, Cecile Lay, Edward Little, Ying Zheng, Qiang Wei, Fuchen Ding
GREEN ENERGY & ENVIRONMENT
(2018)
Meeting Abstract
Chemistry, Multidisciplinary
Jinwen Chen, Edward Little
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2010)
Article
Geography, Physical
Jane Willenbring Staiger, John Gosse, Edward C. Little, Daniel J. Utting, Robert Finkel, Jesse V. Johnson, James Fastook
QUATERNARY GEOCHRONOLOGY
(2006)
Article
Energy & Fuels
Yingna Du, Chen Huang, Wei Jiang, Qiangwei Yan, Yongfei Li, Gang Chen
Summary: In this study, anionic surfactants modified hydrotalcite was used as a flow improver for crude oil under low-temperature conditions. The modified hydrotalcite showed a significant viscosity reduction effect on crude oil. The mechanism of the modified hydrotalcite on viscosity and pour point of crude oil was explored through characterization and analysis of the modified hydrotalcite and oil samples.
Article
Energy & Fuels
Mohammad Saeid Rostami, Mohammad Mehdi Khodaei
Summary: In this study, a hybrid structure, MIL-53(Al)@MWCNT, was synthesized by combining MIL-53(Al) particles and -COOH functionalized multi-walled carbon nanotube (MWCNT). The hybrid structure was then embedded in a polyethersulfone (PES) polymer matrix to prepare a mixed matrix membrane (MMM) for CO2/CH4 and CO2/N2 separation. The addition of MWCNTs prevented MIL-53(Al) aggregation, improved membrane mechanical properties, and enhanced gas separation efficiency.
Article
Energy & Fuels
Yunlong Li, Desheng Huang, Xiaomeng Dong, Daoyong Yang
Summary: This study develops theoretical and experimental techniques to determine the phase behavior and physical properties of DME/flue gas/water/heavy oil systems. Eight constant composition expansion (CCE) tests are conducted to obtain new experimental data. A thermodynamic model is used to accurately predict saturation pressure and swelling factors, as well as the phase boundaries of N2/heavy oil systems and DME/CO2/heavy oil systems, with high accuracy.
Article
Energy & Fuels
Morteza Afkhamipour, Ebad Seifi, Arash Esmaeili, Mohammad Shamsi, Tohid N. Borhani
Summary: Non-conventional amines are being researched worldwide to overcome the limitations of traditional amines like MEA and MDEA. Adequate process and thermodynamic models are crucial for understanding the applicability and performance of these amines in CO2 absorption, but studies on process modeling for these amines are limited. This study used rate-based modeling and Deshmukh-Mather method to model CO2 absorption by DETA solution in a packed column, validated the model with experimental data, and conducted a sensitivity analysis of mass transfer correlations. The study also compared the CO2 absorption efficiency of DETA solution with an ionic solvent [bmim]-[PF6] and highlighted the importance of finding optimum operational parameters for maximum absorption efficiency.
Article
Energy & Fuels
Arastoo Abdi, Mohamad Awarke, M. Reza Malayeri, Masoud Riazi
Summary: The utilization of smart water in EOR operations has gained attention, but more research is needed to understand the complex mechanisms involved. This study investigated the interfacial tension between smart water and crude oil, considering factors such as salt, pH, asphaltene type, and aged smart water. The results revealed that the hydration of ions in smart water plays a key role in its efficacy, with acidic and basic asphaltene acting as intrinsic surfactants. The pH also influenced the interfacial tension, and the aged smart water's interaction with crude oil depended on asphaltene type, salt, and salinity.
Article
Energy & Fuels
Dongao Zhu, Kun Zhu, Lixian Xu, Haiyan Huang, Jing He, Wenshuai Zhu, Huaming Li, Wei Jiang
Summary: In this study, cobalt-based metal-organic frameworks (Co-based MOFs) were used as supports and co-catalysts to confine the NHPI catalyst, solving the leaching issue. The NHPI@Co-MOF with carboxyl groups exhibited stronger acidity and facilitated the generation of active oxygen radicals O2•, resulting in enhanced catalytic activity. This research provides valuable insights into the selection of suitable organic linkers and broadens the research horizon of MOF hybrids in efficient oxidative desulfurization (ODS) applications.
Article
Energy & Fuels
Edwin G. Hoyos, Gloria Amo-Duodu, U. Gulsum Kiral, Laura Vargas-Estrada, Raquel Lebrero, Rail Munoz
Summary: This study investigated the impact of carbon-coated zero-valent nanoparticle concentration on photosynthetic biogas upgrading. The addition of nanoparticles significantly increased microalgae productivity and enhanced nitrogen and phosphorus assimilation. The presence of nanoparticles also improved the quality of biomethane produced.
Article
Energy & Fuels
Yao Xiao, Asma Leghari, Linfeng Liu, Fangchao Yu, Ming Gao, Lu Ding, Yu Yang, Xueli Chen, Xiaoyu Yan, Fuchen Wang
Summary: Iron is added as a flocculant in wastewater treatment and the hydrothermal carbonization (HTC) of sludge produces wastewater containing Fe. This study investigates the effect of aqueous phase (AP) recycling on hydrochar properties, iron evolution and environmental assessment during HTC of sludge. The results show that AP recycling process improves the dewatering performance of hydrochar and facilitates the recovery of Fe from the liquid phase.
Article
Energy & Fuels
He Liang, Tao Wang, Zhenmin Luo, Jianliang Yu, Weizhai Yi, Fangming Cheng, Jingyu Zhao, Xingqing Yan, Jun Deng, Jihao Shi
Summary: This study investigated the influence of inhibitors (carbon dioxide, nitrogen, and heptafluoropropane) on the lower flammability limit of hydrogen and determined the critical inhibitory concentration needed for complete suppression. The impact of inhibitors on explosive characteristics was evaluated, and the inhibitory mechanism was analyzed with chemical kinetics. The results showed that with the increase of inhibitor quantity, the lower flammability limit of hydrogen also increased. The research findings can contribute to the safe utilization of hydrogen energy.
Article
Energy & Fuels
Zonghui Liu, Zhongze Zhang, Yali Zhou, Ziling Wang, Mingyang Du, Zhe Wen, Bing Yan, Qingxiang Ma, Na Liu, Bing Xue
Summary: In this study, high-performance solid catalysts based on phosphotungstic acid (HPW) supported on Zr-SBA-15 were synthesized and evaluated for the one-pot conversion of furfural (FUR) to γ-valerolactone (GVL). The catalysts were characterized using various techniques, and the ratio of HPW and Zr was found to significantly affect the selectivity of GVL. The HPW/Zr-SBA-15 (2-4-15) catalyst exhibited the highest GVL yield (83%) under optimized reaction conditions, and it was determined that a balance between Bronsted acid sites (BAS) and Lewis acid sites (LAS) was crucial for achieving higher catalytic performance. The reaction parameters and catalyst stability were also investigated.
Article
Energy & Fuels
Michael Stoehr, Stephan Ruoff, Bastian Rauch, Wolfgang Meier, Patrick Le Clercq
Summary: As part of the global energy transition, an experimental study was conducted to understand the effects of different fuel properties on droplet vaporization for various conventional and alternative fuels. The study utilized a flow channel to measure the evolution of droplet diameters over time and distance. The results revealed the temperature-dependent effects of physical properties, such as boiling point, liquid density, and enthalpy of vaporization, and showed the complex interactions of preferential vaporization and temperature-dependent influences of physical properties for multi-component fuels.
Article
Energy & Fuels
Yuan Zhuang, Ruikang Wu, Xinyan Wang, Rui Zhai, Changyong Gao
Summary: Through experimental validation and optimization of the chemical kinetic model, it was found that methanol can accelerate the oxidation reaction of ammonia, and methanol can be rapidly oxidized at high concentration. HO2 was found to generate a significant amount of OH radicals, facilitating the oxidation of methanol and ammonia. Rating: 7.5/10.
Article
Energy & Fuels
Radwan M. EL-Zohairy, Ahmed S. Attia, A. S. Huzayyin, Ahmed I. EL-Seesy
Summary: This paper presents a lab-scale experimental study on the impact of diethyl ether (DEE) as an additive to waste cooking oil biodiesel with Jet A-1 on combustion and emission features of a swirl-stabilized premixed flame. The addition of DEE to biodiesel significantly affects the flame temperature distribution and emissions. The W20D20 blend of DEE, biodiesel, and Jet A-1 shows similar flame temperature distribution to Jet A-1 and significantly reduces UHC, CO, and NOx emissions compared to Jet A-1.
Article
Energy & Fuels
Jiang Bian, Ziyuan Zhao, Yang Liu, Ran Cheng, Xuerui Zang, Xuewen Cao
Summary: This study presents a novel method for ammonia separation using supersonic flow and develops a mathematical model to investigate the condensation phenomenon. The results demonstrate that the L-P nucleation model accurately characterizes the nucleation process of ammonia at low temperatures. Numerical simulations also show that increasing pressure and concentration can enhance ammonia condensation efficiency.
Article
Energy & Fuels
Shiyuan Pan, Xiaodan Shi, Beibei Dong, Jan Skvaril, Haoran Zhang, Yongtu Liang, Hailong Li
Summary: Integrating CO2 capture with biomass-fired combined heat and power (bio-CHP) plants is a promising method for achieving negative emissions. This study develops a reliable data-driven model based on the Transformer architecture to predict the flowrate and CO2 concentration of flue gas in real time. The model validation shows high prediction accuracy, and the potential impact of meteorological parameters on model accuracy is assessed. The results demonstrate that the Transformer model outperforms other models and using near-infrared spectral data as input features improves the prediction accuracy.