Article
Energy & Fuels
Lijun Liu, Xiaotao Zheng, Sheng Su, Jiuyang Yu, Tao Liu, Yi Wang, Song Hu, Jun Xiang
Summary: The MnFeW/Ti catalyst shows excellent performance in simultaneously removing NO and Hg-0 from flue gas at low temperature, with complex mechanisms involved in the oxidation of Hg-0.
Article
Engineering, Chemical
Shuaihui Jia, Ge Pu, Weicheng Xiong, Pengcheng Wang, Jie Gao, Cong Yuan
Summary: The study found that 1% Cu-1% Fe/TiO2 is the optimal catalyst for simultaneous removal of NO and SO2, with removal efficiency of 93.9% for NOx and 100% for SO2 under the optimal conditions. The generation of sulfate species on the catalysts leads to the decrease of surface oxygen vacancies, resulting in the reduction of NOx removal. Cu doping can improve the activity of the catalyst by increasing surface oxygen vacancies and inhibiting the formation of sulfates to enhance the sulfur resistance of catalysts.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Environmental Sciences
Shuaihui Jia, Ge Pu, Jie Gao, Cong Yuan
Summary: The study investigates the efficiency and stability of 3% Fe/Al2O3@SiO2 catalyst in simultaneously removing NOx and SO2 using vaporized H2O2. The coating of SiO2 improves the activity and stability of the catalyst, forming more micropores and mesoporous structures.
Article
Chemistry, Applied
Yan Wang, Chi Ma, Zhifei Dou, Yangxian Liu
Summary: A new technique utilizing porous carbon/heat-coactivated persulfate system is proposed for simultaneous removal of SO2, NO, and Hg-0. Experimental and theoretical analysis show that the developed system exhibits higher pollutants removal efficiency due to the synergism between porous carbon and heat. Both SO4- . and .OH play important roles in the removal process of NO and Hg-0, with .OH being more important for NO removal and SO4-. being more important for Hg-0 removal. The removal processes of NO and Hg-0 follow pseudo-first-order rapid reaction kinetics and are controlled by mass transfer.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Energy & Fuels
Kunpeng Li, Hui Hu, Maohong Fan, Mi Zhang, Zhongming Chen, Ruibin Lv, Hao Huang
Summary: An advanced oxidation process (AOPs) using Fe(II) activated peracetic acid (PAA) was investigated for the simultaneous removal of SO2 and NO from flue gas. The maximum removal efficiencies obtained were 92.3% for NO and 99.5% for SO2 under optimal conditions. Reactive oxidizing species and organic radicals were generated in the Fe(II)/PAA system, with organic radicals confirmed to be the major factors affecting NO oxidation. The main products of SO2 and NO removal were identified as SO42- and NO3-.
Article
Engineering, Environmental
Yangxian Liu, Shuo Shi, Zhihua Wang
Summary: In this study, a novel technique for simultaneous removal of NO and SO2 was proposed using a double metal ions-double oxidants coactivation system. The results showed that this system achieved higher free radical yield and pollutant removal efficiency compared to other systems. The removal efficiency of NO increased with higher concentrations of Oxone and Cu2+, but decreased with increasing inlet contents of NO and SO2. SO2 was completely removed under all studied process parameters.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Mingqiang Deng, Zhengguo Xiao, Dengxin Li, Qiaoling Zhu, Qin Chen, Sicheng Wu
Summary: Micro-nanobubbles were used in a Wet Direct Recycling Micro-nanobubble Flue Gas Multi-pollutants Removal System (WDRMRS) for the simultaneous removal of NO, SO2 and Hg-0. The system utilized a micro-nanobubble generator to create a gas-liquid dispersion system, which recycled the absorbent and flue gas to achieve cyclic absorption of pollutants. The study found that various parameters affected the removal efficiency of NO, while the removal efficiency of SO2 was not significantly affected. Only the initial solution pH and NO concentration affected the removal efficiency of Hg-0. The system successfully removed the pollutants and generated easily recyclable products, reducing the cost of waste gas treatment.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Engineering, Environmental
Xuan Liu, Chang'an Wang, Tao Zhu, Qiang Lv, Defu Che
Summary: By adjusting the Mo/Fe atomic ratio of Fe-Mo mixed oxides, simultaneous removal of SO2 and NOx can be achieved, with the catalyst having a Mo/Fe atomic ratio of 2.0 showing the highest activity and efficient removal at low H2O2 dosage. The redox pair of Fe2+/Fe3+ plays a crucial role in decomposing H2O2, while Mo species have a dual effect on catalytic activity, showing promise for the simultaneous removal of SO2 and NOx in coal-fired flue gas.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Yuanqing Wang, Guichen Zhang, Juan Su
Summary: The study investigated denitration and desulfurization using ozone oxidation combined with seawater absorbent, achieving high oxidation efficiency and analyzing influencing factors along with treatment methods.
Article
Energy & Fuels
Fang Wang, Hui Li, Jiyun Gao, Chenhui Liu, Lijuan Jia, Jiayu Feng, Ping Ning
Summary: In this study, a modified solid waste calcium carbide slag (KCS) was used to simultaneously remove NO and SO2 under low temperature conditions. The addition of SO2 promoted the formation of oxygen-containing functional groups, enhancing the removal efficiency. This research proposes a strategy for waste utilization, achieving simultaneous removal of NO and SO2.
Article
Engineering, Environmental
Dan Zhong, Fu He, Wencheng Ma, Yichuan Wu, Jiaju Dong
Summary: This study investigated the use of pipe deposits from water distribution networks as catalyst to activate the H2O2/Na2S2O8 system for the removal of perchloroethylene and chloramphenicol. The degradation efficiency of perchloroethylene was 92.05% within 8 hours, and the degradation efficiency of chloramphenicol with hydroxylamine assistance was 73.31% within 100 minutes. The study identified key affecting factors, kinetic models, and degradation products.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Siyuan Yang, Dan Xu, Wenjie Yan, Yuanquan Xiong
Summary: The study presents a method for synthesizing MWCNTs from plastics and red mud, with the resulting RM-CNTs used as a novel catalyst for removing SO2 and NO from flue gas. The research showed that RM-CNTs exhibit excellent catalytic activity and clarified their catalytic mechanism.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Energy & Fuels
Jiahao Yan, Lingkui Zhao, Yan Huang, Junfeng Zhang, Jun Tang
Summary: Mesoporous CuFeAlZrOx catalyst shows excellent performance for simultaneous removal of Hg-0 and NO, but SO2 has inhibitory effects at low temperatures and facilitative effects at high temperatures on its SCR activity. Additionally, SO2 promotes Hg-0 removal throughout the temperature range.
Article
Energy & Fuels
Dongyue Zhao, Qiuqiao Jiang, Bo Peng, Jun Liu, Ruoyu Wang, Menglong Feng, Shangcong Sun, Hao Sha, Kai Zhu, Haitao Song, Wei Lin, Zhijian Da
Summary: A novel strategy for the simultaneous removal of NO and SO2 was proposed, which chemically couples the removal of SOx and NOx through a direct redox reaction. An efficient catalyst was tailored to achieve high adsorption and reduction capacities. The La site in the catalyst promoted the disproportionation of SO2, while Co accelerated the disproportionation and NO reduction. The catalyst showed higher DeNOx and DeSOx efficiencies compared to commercial additives.
Article
Engineering, Environmental
Jianqiang Shi, Jianjun Chen, Shangchao Xiong, Jinxing Mi, Hao Liu, Zhen Wang, Haiyan Liu, Jiancheng Wang, Junhua Li
Summary: The crystal structure of TiO2 significantly affects the catalytic performance of supported active sites. In this study, different crystal forms of TiO2 were synthesized and used as supports for V2O5-based catalysts for Hg-0 oxidation. The results showed that V2O5/TiO2-B exhibited the highest Hg-0 oxidation efficiency due to its lower redox temperature, larger HCl adsorption capacity, and more oxygen vacancies. The study also suggested that a combination of anatase and brookite TiO2-supported vanadyl tandem catalysts should be employed in the SCR reactor for simultaneous removal of NOx and Hg-0.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Zili Zhang, Qinda Zeng, Runlong Hao, Hongzhou He, Fan Yang, Xingzhou Mao, Yumin Mao, Peng Zhao
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Chemistry, Multidisciplinary
Yi Zhao, Tianhao Wang, Yongbin Wang, Runlong Hao, Han Wang, Yuhong Han
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2019)
Article
Engineering, Environmental
Runlong Hao, Yumin Mao, Xingzhou Mao, Zheng Wang, Yaping Gong, Zili Zhang, Yi Zhao
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Runlong Hao, Xinhong Dong, Zheng Wang, Le Fu, Yi Han, Bo Yuan, Yaping Gong, Yi Zhao
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Engineering, Environmental
Runlong Hao, Xingzhou Mao, Zhen Qian, Yi Zhao, Lidong Wang, Bo Yuan, Kaimin Wang, Zihan Liu, Meng Qi, John Crittenden
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2019)
Article
Energy & Fuels
Shaoping Cui, Runlong Hao, Dong Fu
Article
Engineering, Environmental
Runlong Hao, Zheng Wang, Xingzhou Mao, Yaping Gong, Bo Yuan, Yi Zhao, Baojuan Tian, Meng Qi
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Jinghong Zhang, Dong Fu, Shuqin Wang, Runlong Hao, Yixiao Xie
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2019)
Review
Engineering, Environmental
Han Wang, Bo Yuan, Runlong Hao, Yi Zhao, Xinpeng Wang
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Environmental
Su Liu, Xin Tong, Lei Huang, Runlong Hao, Haiping Gao, Yongsheng Chen, John Crittenden
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Xi Chen, Xin Tong, Jiabin Gao, Lijuan Yang, Jianuo Ren, Weijie Yang, Su Liu, Meng Qi, John Crittenden, Runlong Hao
Summary: A bifunctional beta-FeOOH@MXene material was fabricated and showed excellent performance in nitrite oxidation and Hg2+ removal. The synergism between MXene and beta-FeOOH played a key role in the material's outstanding abilities.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Runlong Hao, Zhao Ma, Zefeng Zeng, Yumin Mao, Bo Yuan, Lidong Wang
Summary: The study focused on removing and recovering gaseous elemental mercury (Hg-0) using a novel composite membrane technology, achieving high efficiency and excellent performance. Mercury was successfully recovered and the membrane regenerated via a leaching process. Mechanism analysis clarified the process of removing Hg-0 from the system.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Zili Zhang, Yao Lin, Jianwei Meng, Lei Wang, Qin Yao, Xiaohan Chen, Guodong Dai, Yi Zhao, Runlong Hao
Summary: This study investigated the effects of six types of fly ash on NO removal and characterized their micromorphology, elemental composition, and elemental oxidation states. The experimental results showed that high solubility is a prerequisite condition for fly ash to exhibit inhibitory effects on NO removal.
Article
Chemistry, Physical
Tieyue Qi, Xi Chen, Jingzhao Zhang, Jiabin Gao, Runlong Hao, John Crittenden
Summary: Wastewater detoxification and sulfate purification of flue gas desulfurization wastewater can be achieved by the simultaneous catalytic oxidation of SO32- and separation of Se using an oxygen-vacancy-enriched cobalt-ceria (OV-CoO/CeO2) bimetallic oxide. The catalyst showed a significantly increased oxidation rate of SO32- and high adsorption efficiency for Se. Characterization of the catalyst revealed the formation of cobalt oxide nanoclusters on the CeO2 matrix, which increased the catalytic activity. The Se adsorption behavior was well-predicted by a surface diffusion model.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Runlong Hao, Zheng Wang, Chen Tang, Zhengyang Gao, Bo Yuan, Weijie Yang, Yi Zhao
Summary: Ultraviolet and heat combined with HCl, HBr, and HI were used to remove Hg-0, with Cl·/Br·/I· and Br2/I2 playing key roles. Costs varied depending on the compounds used, while increasing heat catalysis temperature favored removal efficiency.
ACS ES&T ENGINEERING
(2021)
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.