Article
Engineering, Environmental
Ruize Sun, Guangqian Luo, Mingyu Yu, Li Wang, Xinpei Lu, Xian Li, Hong Yao
Summary: Adsorbents injection technology is an effective strategy for controlling mercury emission from flue gas. This study proposed a novel method for synthesizing nano-sulfur adsorbent and demonstrated its higher efficiency compared to micron-sized elemental sulfur adsorbent. Furthermore, the research revealed the differences in sulfur allotropes' reactions with mercury.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Qihuang Huo, Yahui Wang, Huijun Chen, Yu Feng, Lina Han, Wei Xie, Jiancheng Wang, Weiren Bao, Liping Chang, Kechang Xie
Summary: A novel sulfur hybrid mercury sorbent was successfully prepared by chemically activating high inorganic sulfur coal using potassium hydroxide, which showed excellent mercury removal performance at high temperatures, high specific surface area, and adsorption capacity, as well as good resistance to various gases.
Article
Energy & Fuels
Qiang Zhou, Guancheng Di, Tao Song, Ping Lu, Guiling Xu
Summary: Sulfur doped mesoporous carbon (SMC) was synthesized as a promising sorbent for efficiently removing gas phase elemental mercury from flue gas. The SMC-900 sorbent displayed excellent mercury removal performance and high SO2 tolerance. The precursor ratio, carbonization temperature, and adsorption temperature were found to affect the mercury removal efficiency.
Article
Chemistry, Multidisciplinary
Yi Xiao, Li Tian, Xiuyun Liu
Summary: In this study, a waste byproduct of petroleum coke was modified with bromine to capture elemental mercury in simulated flue gas. The results showed that the brominated petroleum coke was effective for capturing elemental mercury, with the optimal temperature being around 150 degrees C. Kinetic models revealed that chemisorption was the controlling step, with intra-particle diffusion and external mass transfer occurring simultaneously. Moreover, the presence of higher concentrations of O-2 or NO increased the initial mercury adsorption rate and equilibrium adsorption quantity, while higher concentrations of SO2 or HCl had a negative impact on the adsorption performance.
Article
Engineering, Environmental
Xingyu Pang, Wei Liu, Haomiao Xu, Qinyuan Hong, Peng Cui, Wenjun Huang, Zan Qu, Naiqiang Yan
Summary: The use of ZnO-CuS composite materials has proven effective in capturing gaseous SO3 and Hg-0, especially at high temperatures with high feasibility and performance. Additionally, ZnO and CuS demonstrate unique advantages in the adsorption of SO3 and Hg-0, making gaseous mercury easier to capture.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Yang Xu, Guangqian Luo, Qingzhu Zhang, Zehua Li, Shibo Zhang, Wei Cui
Summary: Sulfurized chars derived from wood and scrap tire pyrolysis were developed as cost-effective sorbents for capturing elemental mercury (Hg-0) from flue gas. The synergistic effect between wood and tire during co-pyrolysis enhanced the Hg-0 capture capability of the sulfurized chars. Chemisorption dominated the Hg-0 removal process, with organic sulfur/elemental sulfur serving as active components for Hg-0 oxidization into HgS.
Article
Energy & Fuels
John H. Jacobs, Nancy Chou, Kevin L. Lesage, Ye Xiao, Josephine M. Hill, Robert A. Marriott
Summary: Activated carbons have been found to possess good selective adsorption capability for removing sulfur dioxide from flue gas, especially in the presence of water. The activated carbons prepared with KOH and NaOH showcased the highest SO2 adsorption capacity under wet conditions. Additionally, the adsorption performance of all activated carbons remained unchanged after multicomponent adsorption of wet SO2.
Article
Biotechnology & Applied Microbiology
Bo Wang, Yu-Fei Xu, Zhong-Liang Sun
Summary: This study assessed the absorption characteristics and biological effects of using flue gas for microalgal culture, finding that desulfurization can optimize growth conditions while denitrification may not be necessary.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Engineering, Environmental
Fangjun Wang, Run Wang, Tao Jia, Jiang Wu, Chengfang Xu, Yu Sun, Xin Wang, Wenyu Wu, Yongfeng Qi
Summary: The study used nanosheet g-C3N4 modified by CuS for capturing flue gas mercury, achieving a removal efficiency of nearly 100% for Hg0, with no significant inhibition effects from common components in the flue gas, showing promising potential as a substitute for traditional adsorbents under various flue gas conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Engineering, Environmental
Ting Liu, Zhuo Xiong, Peng Ni, Zizhen Ma, Yan Tan, Zishun Li, Shengnan Deng, Yincui Li, Qirong Yang, Huawei Zhang
Summary: This review focuses on the current situation of Hg0 removal on different kinds of adsorbents in coal combustion flue gas, smelting flue gas, and natural gas. Hydrophobic groups, hydrophobic materials, and modification of sulfur/selenium pretreatment and metals loading can effectively overcome the problem of H2O and SO2. Additionally, separation, regeneration, and recovery aspects are explored and summarized, with thermal treatment accompanied by different components being widely adopted as an efficient approach to recover the adsorption ability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Shu Yang, Cao Liu, Pingshan Wang, Huimin Yi, Fenghua Shen, Hui Liu
Summary: A novel Co9S8 nanoparticles-embedded porous carbon was designed for efficient Hg-0 capture from smelting flue gas, showing better adsorption capacity and recyclability compared to other materials. The Co9S8-PC demonstrates a significantly large Hg-0 adsorption capacity of 43.18 mg/g and a sustainable approach for Hg-0 recovery.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Ying Liu, Jiaxin Wang, Tao Wang, Wei-Ping Pan
Summary: This study developed zeolite-templated carbon materials with and without sulfur, and tested their mercury adsorption performance at different temperatures. The results showed that one sample exhibited the highest mercury removal efficiency, and its physical and chemical properties contributed to the mercury capture process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Shilin Zhao, Hui Luo, Anjun Ma, Zhiqiang Sun, Rongzhang Zheng
Summary: Coal-fired power plants are the main anthropogenic source of mercury emissions in the atmosphere. This study focuses on the preparation of mechanochemical sulfur-modified biomass coke and investigates the effects of sulfur addition types and amounts on mercury removal performance. The results show that different sulfur addition types have varying effects on the mercury removal efficiency, with increasing S2Cl2 addition leading to higher removal rates.
Article
Environmental Sciences
Xingyu Qian, Xin Guo, Bang Wu
Summary: The CuFeSx/AC adsorbent synthesized in this study showed high efficiency in removing mercury under simulated flue gas conditions, and the introduction of Fe increased Cu+ proportion and generated active sulfur sites, facilitating the oxidation of Hg-0. Stable HgS was the major product on the adsorbent surface.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Junyuan Li, Kaisong Xiang, Cao Liu, Shudan He, Fenghua Shen, Hui Liu
Summary: Metal sulfides are promising sorbents for removing H-g(0) from flue gas, but they require regeneration. This study developed a CoS2 loaded porous carbon for H-g(0) capture and investigated the regeneration using elemental sulfur. Elemental sulfur effectively recovered the H-g(0) capture ability of the sorbent and showed similar regeneration stability compared to toxic H2S. The regenerated sorbent had higher S-2(2-) sites but less Co3+ and S-n(2-) (n >2) sites compared to the fresh sample.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biodiversity Conservation
Chao-Heng Tseng, Ling-Ling Chen, Hsing-Cheng Hsi, Meng-Chu Lee
HUMAN AND ECOLOGICAL RISK ASSESSMENT
(2020)
Article
Environmental Sciences
Yu Ting, Boon-Lek Ch'ng, Chi Chen, Meng-Yuan Ou, Yung-Hua Cheng, Che-Jung Hsu, Hsing-Cheng Hsi
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Che-Jung Hsu, Yun-Hsin Chen, Hsing-Cheng Hsi
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Environmental Sciences
Boon-Lek Ch'ng, Che-Jung Hsu, Yu Ting, Ying-Lin Wang, Chi Chen, Tien-Chin Chang, Hsing-Cheng Hsi
Article
Chemistry, Physical
Zhiwei Wang, Peijie Ma, Kun Zheng, Can Wang, Yuxi Liu, Hongxing Dai, Chongchen Wang, Hsing-Cheng Hsi, Jiguang Deng
APPLIED CATALYSIS B-ENVIRONMENTAL
(2020)
Article
Engineering, Environmental
Chien-Ping Chou, Chun-Hsiang Chiu, Tien-Chin Chang, Hsing-Cheng Hsi
Summary: This study investigated mercury emissions, speciation, and mass distribution of four coal-fired power plants in Taiwan. The results showed similar mercury speciation at the stacks, with elemental mercury being the dominant species emitted to the atmosphere. The SCR+ESP+WFGD system had the highest mercury removal efficiency, and the mercury mass balances for the four plants ranged from 86.0% to 117%.
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2021)
Article
Engineering, Environmental
Hua-Yung Liao, Shu-Yuan Pan, Shu-Wen You, Chia-Hung Hou, Can Wang, Ji-Guang Deng, Hsing-Cheng Hsi
Summary: This study developed a novel electrothermal swing system with gold-electrodeposited activated carbon fiber cloth (GE-ACFC) for adsorbing and recovering low-concentration Hg0, showing that GE-ACFC with an Au growth time of 1200 s had the best Hg0 adsorption performance; the treated GE-ACFC could achieve stable and efficient Hg re-adsorption.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Geochemistry & Geophysics
Shih-Han Huang, Tien-Chin Chang, Hui-Chen Chien, Zih-Sin Wang, Yen-Chen Chang, Ying-Lin Wang, Hsing-Cheng Hsi
Summary: This study conducted the first comprehensive investigation of heavy metals in irrigation canal sediments in Taiwan in 2019. It found that Cu was the main heavy metal in polluted agricultural land, with the most contaminated sites located in Taoyuan City and Changhua County. The distribution of heavy metals in polluted irrigation water sources corresponded to possible pollution sources upstream.
Article
Engineering, Environmental
Ying-Lin Wang, Ming-Chien Mark Tsou, Kuan-Hsuan Pan, Haluk Ozkaynak, Winston Dang, Hsing-Cheng Hsi, Ling-Chu Chien
Summary: This study focused on estimating the probabilistic soil and dust ingestion rates for children under 3 years old using the SHEDS-S/D model and assessing the health risks of exposure to heavy metals. It found that soil-to-skin adherence and hand-to-mouth ingestion were the main factors influencing ingestion rates. The results highlight the importance of soil ingestion rate as a key parameter increasing the risk for children, with potential risk reduction through increased hand washing.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Che-Jung Hsu, Yung-Hua Cheng, Adrienne Chung, Ying-Pin Huang, Yu Ting, Hsing-Cheng Hsi
Summary: Anthropogenic activities lead to the discharge of heavy metals into the hydrosphere and their deposition onto sediment. These metals can be remobilized and pose risks to the environment and human health. This study used a novel recoverable amendment, sulfurized magnetic biochar (SMBC), to remediate heavy metal-contaminated sediment, showing effectiveness in lowering metal releases and demonstrating excellent recoverability. This technique offers a practical alternative for immobilizing heavy metals in sediment.
ENVIRONMENTAL POLLUTION
(2023)
Article
Crystallography
Shu-Chun Chi, Hsing-Cheng Hsi, Chia-Ming Chang
Summary: In this study, the quantum chemical genetic algorithm multiple linear regression (GA-MLR) method was used to predict the binding affinity (log RBA) of estrogen receptor alpha with three categories of environmental endocrine disrupting chemicals (EDCs), namely, PCB, phenol, and DDT. The optimal model results showed that log RBA increases with increasing electrophilicity and hydrophobicity of EDCs. However, using the quantum chemical cluster model approach, the modeling results revealed that electrostatic interaction and hydrogen bonding play a significant role. The chemical reactivity descriptors calculated based on the conceptual density functional theory also indicated that the binding mechanism of charge-controlled interaction is superior to that of frontier-controlled interaction.
Article
Green & Sustainable Science & Technology
Hao-Chih Yu, Shu-Wen You, Can Wang, Ji-Guang Deng, Hsing-Cheng Hsi
Summary: This study investigates the effects of Joule heating on the properties and regenerability of activated carbon using a commercially available beaded activated carbon and a novel electrothermal swing system. The results indicate that Joule heating leads to pore blockage and decreases the adsorption capacity and regeneration efficiency of activated carbon.
SUSTAINABLE ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Ying-Lin Wang, Ming-Chien Mark Tsou, Li-Chi Lai, Zeng-Yei Hseu, Hsing-Cheng Hsi, Ling-Chu Chien
Summary: Health risk assessments for Taiwanese people living near Hg-contaminated sites are necessary. In this study, anthropogenic soils from various polluted sources in Taiwan were analyzed for oral and inhalation bioaccessible fractions of Hg. Different in vitro assays with varying pH levels and chemical compositions showed discrepancies in oral and inhalation bioaccessible levels of Hg. The study suggests that children living near recently polluted sites may be at risk of renal effects regardless of the bioaccessibility.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Xu-Rui Hu, Yong-Chao Wang, Zhen Tong, Can Wang, Er-Hong Duan, Meng-Fei Han, Hsing-Cheng Hsi, Ji-Guang Deng
Summary: In this study, a double dielectric barrier discharge (DDBD) reactor was used to decompose TCE. The research investigated the influence of different condition parameters on DDBD treatment of TCE and identified the appropriate working conditions. The results showed high removal efficiency and energy yield, as well as the production of poly-chlorinated organic compounds and ozone in the DDBD degradation process.
Article
Green & Sustainable Science & Technology
Chi Chen, Yu Ting, Boon-Lek Ch'ng, Hsing-Cheng Hsi
SUSTAINABLE ENVIRONMENT RESEARCH
(2020)
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.