Article
Agricultural Engineering
Abid Farooq, Gwang Hoon Rhee, Im-Hack Lee, Moonis Ali Khan, See Hoon Lee, Sang-Chul Jung, Byong-Hun Jeon, Wei-Hsin Chen, Young-Kwon Park
Summary: This study explores the production of biohydrogen from waste furniture through catalytic steam gasification with bio-char catalysts. It found that raw bio-char showed the highest H-2 selectivity in the gasification experiment, indicating its potential as a solution for eco-friendly hydrogen production.
BIORESOURCE TECHNOLOGY
(2021)
Article
Thermodynamics
Ying Wang, Shuai Tan, David A. Bell
Summary: The study investigated steam gasification kinetics in a modified drop tube fixed bed reactor, with a focus on temperature and pressure effects on surface chemical reactions. The random pore model closely matched experimental results, and mass transfer resistances were analyzed using the Thiele modulus based on particle sizes, temperature, total pressure, and steam partial pressure.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Environmental Sciences
Abid Farooq, Seong-Ho Jang, See Hoon Lee, Sang-Chul Jung, Gwang Hoon Rhee, Byong-Hun Jeon, Young-Kwon Park
Summary: The study introduces an environmentally friendly method for food waste disposal through catalytic steam gasification using various types of Ni-loaded chars. The treated chars showed high hydrogen generation efficiency and prevented coke formation, potentially offering a solution for improving gas yield and hydrogen generation.
Article
Energy & Fuels
Jingchun Huang, Chao Feng, Yun Yu, Di Xie, Zhenqi Wang, Wei Hu, Yu Qiao
Summary: Steam gasification of leftover rice involves pyrolysis, volatile reforming, and char gasification stages. Experiments conducted at temperatures ranging from 600 to 1000 degrees C show that raw leftover rice can be cracked into volatile products at 600 degrees C, generating high yields of tar and gas. The study also demonstrates that torrefied leftover rice generates lower gas yields at all pyrolysis temperatures. This research provides valuable data for designing suitable gasification reactors for food waste.
Article
Engineering, Environmental
Zhiwei Chu, Zhiqiang Gong, Zhenbo Wang, Haoteng Zhang, Lei Liu, Jinhui Wu, Jianzhu Wang
Summary: Hydrogen production through oil sludge gasification with steam is significant for industrial hazardous waste treatment and resource conservation. The process showed optimal hydrogen yield at 800 degrees Celsius with an SOS ratio of 0.3:1. Char yield post-gasification was high, necessitating incineration which could be divided into three stages. Gasification combined with char incineration is an effective approach for solid waste utilization, recovering hydrogen energy and reducing environmental risks.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Ru Yang, Yongfa Diao, Yaolin Lou
Summary: Rice husk gasification char (RHGC) has a good adsorption effect on mercury in flue gas, which is improved after modification with halogen elements. The results indicate that mercury is mainly adsorbed by the active sites on the adsorbent surface, with chemical adsorption being dominant.
FRESENIUS ENVIRONMENTAL BULLETIN
(2021)
Article
Energy & Fuels
Shirish Kumar Sharma, Anand M. Shivapuji, S. Dasappa
Summary: This study focuses on char gasification in steam for generating syngas in a two-stage gasification technology for high-ash coal. Controlled experiments were conducted to investigate the dependence of char reactivity on temperature, gas composition, flow rate, and carbon conversion rate. The results showed that small particles have higher reactivity compared to bigger particles, making them suitable for pilot-scale operations. Pilot-scale experiments were also carried out in an oxy-steam environment, and the results were compared to simulated experiments for small particles. The addition of oxygen with steam improved the reactivity of char gasification, but led to a decrease in the calorific value of the gas.
Article
Chemistry, Multidisciplinary
Saiman Ding, Efthymios Kantarelis, Klas Engvall
Summary: The mineral content of biomass affects the gasification rate of biomass-derived char. This study focused on the potassium-induced catalytic phenomena during gasification of biomass-derived char. It was found that there is a critical K/C ratio (5 x 10(-3)) where the catalytic phenomena start to prevail. The conversion rate of the char is positively correlated with the potassium content and progressively increases.
Article
Thermodynamics
Jingzhang Liu, Yuhua Liu, Jianguo Zhu, Qinggang Lyu, Fei Pan, Yi Zhang, Jiahang Zhang
Summary: Understanding the fossil fuel chemical reaction conversion behavior provides insights into the micro physico-chemistry mechanism of burning chemical kinetics. In this study, detailed combustion reaction experiments and a novel developed kinetics model were used to investigate coal char conversion behavior in enriched-oxygen and high carbon dioxide dilution environments. The results showed that the kinetics model developed in this study gave more coherent predictions compared to previous typical kinetics models, and the contribution ratio from endothermal gasification chemical reaction on char maximum conversion rate was significant.
COMBUSTION AND FLAME
(2021)
Article
Biotechnology & Applied Microbiology
Yin Li, Fana Mulugeta Hagos, Rongrong Chen, Hanxin Qian, Chengxing Mo, Jing Di, Xikun Gai, Ruiqin Yang, Genxing Pan, Shengdao Shan
Summary: Hydrochars prepared by metal chloride-assisted hydrothermal carbonization of rice husk exhibit high carbon content and oxygen-containing functional groups, showing significant adsorption capacities for organic compounds with rapid adsorption equilibrium.
BIORESOURCES AND BIOPROCESSING
(2021)
Article
Engineering, Environmental
Huiwen Zhang, Runhao Zhang, Wenya Li, Zhang Ling, Wen Shu, Jiangya Ma, Yujie Yan
Summary: This study combines energy utilisation of agricultural wastes with the adsorption of dimethoate from agricultural wastewater via hydrogen and biochar production using co-hydrothermal gasification. The results show that the feedstock of 3RH+1CM achieves the highest gas yield and hydrogen gasification efficiency, and the derived biochars have the highest adsorption capacity for dimethoate.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Energy & Fuels
Chen Liang, Xiaofang Wang, Qinggang Lyu
Summary: Using oxygen and steam as gasifying agent in a Circulating Fluidized Bed (CFB) preheater can enhance the gasification reactivity of coal; replacing air by O-2-steam in the gasifying agent and controlling the modification temperature and steam to coal ratio can improve the gasification reactivity of modified char; the gasification reactivity of modified char increases and then decreases with the highest value at a steam to coal ratio of 0.87.
Article
Energy & Fuels
Tzong-Horng Liou, Yu-Kai Tseng, Teng-Yuan Zhang, Zhen-Shu Liu, Jou-Yi Chen
Summary: This study proposed using two graphene oxide (GO)-based carbonaceous composites, RHC/GO and OMC/GO, to effectively utilize rice husk carbon (RHC) and rice husk ash (RHA). The addition of GO increased the surface areas and pore volumes of the carbonaceous composites. Both RHC/GO and OMC/GO exhibited a mesoporous structure with high surface area and pore volume. OMC/GO showed better performance for the adsorption of Rhodamine B (RhB) compared to RHC/GO.
Article
Engineering, Environmental
Jorge Preciado-Hernandez, Juan Zhang, Isabelle Jones, Mingming Zhu, Zhezi Zhang, Dongke Zhang
Summary: The study investigated the effects of steam activation on pyrolysis char under different conditions, showing that the steam gasification reaction was kinetically controlled. The volumetric model was found to best describe the behavior of the solid-gas gasification reaction rate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Thermodynamics
Mohammed N. Asheruddin, Anand M. Shivapuji, Srinivasaiah Dasappa
Summary: This work presents experimental and numerical investigations on the conversion of biomass char in a thermal environment dominated by H2O. The study establishes that a temperature above 730°C is when char conversion becomes practically relevant, with a rate of 0.4 mg min-1 °C-1. The mass loss rate of char particles with different sizes is studied under various temperatures, H2O concentrations, and their combinations, showing that increasing temperature and reactant concentration reduces conversion time scales. The presence of H2 is found to inhibit the char-steam reaction, and the CO+H2O reaction plays a pivotal role in controlling char conversion.
Article
Thermodynamics
Yanying Xu, Ming Zhai, Li Guo, Peng Dong, Jian Chen, Zhi Wang
APPLIED THERMAL ENGINEERING
(2016)
Article
Materials Science, Paper & Wood
Ming Zhai, Li Guo, Yu Zhang, Peng Dong, Guoli Qi, Yudong Huang
Article
Chemistry, Physical
Xinyu Wang, Wei Lv, Li Guo, Ming Zhai, Peng Dong, Guoli Qi
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2016)
Article
Thermodynamics
Ming Zhai, Jianing Liu, Ze Wang, Li Guo, Xinyu Wang, Yu Zhang, Peng Dong, Jiawei Sun
Article
Thermodynamics
Ming Zhai, Li Guo, Ze Wang, Yao Xu, Yu Zhang, Peng Dong, Qingquan Li
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2017)
Article
Engineering, Chemical
Ming Zhai, Li Guo, Lin Sun, Yu Zhang, Peng Dong, Weiqiang Shi
Article
Energy & Fuels
Li Guo, Ming Zhai, Zhentong Wang, Yu Zhang, Peng Dong
Article
Energy & Fuels
Xinyu Wang, Ming Zhai, Zhentong Wang, Peng Dong, Wei Lv, Ruichun Liu
Article
Chemistry, Applied
Yao Xu, Ming Zhai, Shuai Jin, Xun Zou, Shubin Liu, Peng Dong
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Chemistry, Applied
Ashak Mahmud Parvez, Tao Wu, Muhammad T. Afzal, Sannia Mareta, Tianbiao He, Ming Zhai
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Energy & Fuels
Yao Xu, Ming Zhai, Hongkun Guo, Haoxuan Qi, Xun Zou, Shuai Jin, Peng Dong
Article
Energy & Fuels
Xinyu Wang, Ming Zhai, Hongkun Guo, Aidin Panahi, Peng Dong, Yiannis A. Levendis
Summary: The study of biomass pellets pyrolysis revealed that increasing pyrolysis temperature and duration led to decreased char yields, with differences in ash formation and composition impacting the physical and chemical properties of the chars. Ash melting behavior varied between corn straw and rice husk, influencing pore structure and surface area of the resulting chars. Higher temperatures resulted in more orderly carbon structure, while reducing char yields and extent of ash melting and polymerization.
Article
Environmental Sciences
Yao Xu, Ming Zhai, Di Yang, Zhaoyang Ma, Gaurav Kumar, Peng Dong, Jiaqi Zhu
Summary: A fusion decoupling combustion technical scheme is proposed, which divides the continuous combustion process into the fusion gasification stage and gasified gas combustion stage. By preheating the air required for the gasification reaction, the temperature in the gasification zone is kept above the ash fusion temperature. This ensures the burnout of combustible components and decreases NOx emission.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Energy & Fuels
Li Guo, Ming Zhai, Zhentong Wang, Yu Zhang, Peng Dong
JOURNAL OF THE ENERGY INSTITUTE
(2019)
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.