Article
Energy & Fuels
Jianping Yang, Qin Li, Wenbing Zhu, Wenqi Qu, Min Li, Zhengyong Xu, Zequn Yang, Hui Liu, Hailong Li
Summary: This study utilized the abundant mineral chalcopyrite as an efficient trap for Hg-0 sequestration, showing excellent removal performance in a wide temperature range and minimal interference from typical flue gas components. The adsorption capacity and rate of CuFeS2 were significantly higher than commercial activated carbons, attributed to the oxidizing and immobilizing abilities of disulfide ligands, and the sorbent could be regenerated through thermal decomposition, saving operation costs. CuFeS2 is identified as a potential, cost-effective trap for efficient remediation of Hg-0 from coal combustion flue gas.
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
Lu Dong, Hai Wang, Yaji Huang, Jianrui Zha, Haoqiang Cheng, Lingqin Liu, Zhicheng Zhu, Hao Chen, Shouyi Ding, Sheng Wang
Summary: A magnetically recoverable sorbent incorporating γ-Fe2O3 into attapulgite and loaded with CuCl2 was developed for efficient removal of Hg-0 from coal combustion flue gas. The sorbent showed promising results in Hg-0 removal at high temperature, with the mechanism involving O-2 regeneration and Cu/Fe re-oxidation. The sorbent was less affected by NO and SO2, and the presence of HCl and O-2 aided in regeneration for multiple cycles.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Zifeng Luo, Ling You, Jiang Wu, Yubao Song, Siyuan Ren, Tao Jia, Xiaokun Li, Liping Chen, Yongfeng Qi, Ping He
Summary: This study introduces the method of introducing selenium ligands into ZnS to enhance Hg0 capture capability, with promising results showing 100% removal efficiency within a wide temperature range for 30SZ. The sorbent demonstrated excellent absorbent capability and minimal effects from O2 and SO2, with slight competition from NO for Hg0 adsorption.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Kening Yao, Xiao Zhang, Boxiong Shen, Qiqi Shi, Shuhao Li, Feng Shen
Summary: This study aims to design an efficient adsorbent for high-efficiency removal of elemental mercury (Hg0) from coal-fired power plant emissions. By co-implanting porous TiO2 with inorganic-organic dual functional sites (-SH and MnOx), the 2SH-MnOx/TiO2 adsorbent achieved a Hg0 removal efficiency of 90% at 175 degrees C and a high gas hourly space velocity (GHSV) of 120,000 h-1. The co-existence of -SH and MnOx was found to promote Hg0 adsorption and enhance the transfer of electrons from Hg0 to the adsorbent surface.
Article
Engineering, Environmental
Lu Dong, Hai Wang, Yaji Huang, Hao Chen, Haoqiang Cheng, Lingqin Liu, Ligang Xu, Jianrui Zha, Mengzhu Yu, Sheng Wang, Yufeng Duan
Summary: Magnetic manganese-iron modified attapulgite sorbents were synthesized and shown to have optimal Hg-0 removal activity in coal-fired flue gas under certain conditions, which could potentially reduce costs and maximize the utilization of green energy sources.
CHEMICAL ENGINEERING JOURNAL
(2021)
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
Engineering, Chemical
Wei Zheng, Zequn Yang, Jiefeng Chen, Weizhen He, Hongxiao Zu, Mingguang Zhang, Wenqi Qu, Jianping Yang, Lijian Leng, Hailong Li
Summary: This study presents a rapid method to fabricate efficient Hg0 traps with Cu7S4 nanosheet arrays anchored on a copper skeleton, and demonstrates a versatile strategy to functionalize metal skeletons for vapor Hg0 immobilization.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Mengli Zhou, Yang Xu, Guangqian Luo, Qingzhu Zhang, Lin Du, Zehua Li
Summary: This study prepared Ce-Fe binary oxide modified bentonite for mercury removal from flue gas. The modified bentonite showed better removal performance and the removal mechanism was revealed. Furthermore, the deactivated modified bentonite can be effectively regenerated after thermal treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Feng Xin, Rihong Xiao, Yongchun Zhao, Junying Zhang
Summary: This research proposes a method to reduce elemental mercury emission from coal-fired power plants by modifying magnetospheres with H2S as a sorbent. The modified magnetospheres show high affinity towards Hg-0 and can achieve over 80% adsorption efficiency. The technology has low cost, high recyclability, and minimal impact on environmental mercury pollution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Shuaibo Cui, Yue Zhao, Yangxian Liu, Renkun Huang, Jianfeng Pan
Summary: Two types of straw porous biochars were prepared using microwave-assisted KOH activation to eliminate H2S in the gas phase. The physical structures of the biochars were improved, and the oxygen-containing functional group content was raised. The adsorbents exhibited high specific surface areas and good performance for eliminating H2S, with equilibrium adsorption capacities of 57.91 and 61.47 mg/g.
Article
Engineering, Chemical
Hengyuan Ran, Hui Wang, Jingmao Wu, Yiming Zhu, Jianfei Wu, Haotian Shen
Summary: This study investigated the interference effect of H2O on mercury removal in an oxyfuel-combustion atmosphere. The presence of H2O along with other gases affected the mercury removal process and exhibited different behaviors in various atmospheric conditions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Xiaopeng Zhang, Yuying Wei, Lianhao Zhang, Xinxin Wang, Ning Zhang, Junjiang Bao, Gaohong He
Summary: Adsorption is an effective method for removing Hg0 from flue gas, and the morphology and active site of sorbents play a crucial role in the removal efficiency. By utilizing a hierarchical porous nanosheet-based nanotube structure, the mass transfer resistance can be reduced and more active sites can be provided. Organic-inorganic hybrid nanowires of Co-aspartic acid were used as a template to prepare CuCo2O4 sorbents with favorable physicochemical properties. The CuCo2O4-1-2 sorbent exhibited the best hierarchical porous nanosheet-based nanotube structure, excellent redox properties, high Hg0 removal efficiency of 89%, good poisoning resistance, and stability under specific conditions. The Cu-Co active site on the CuCo2O4 surface played a crucial role in capturing and activating O2.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Vanish Kumar, Sherif A. Younis, Jan E. Szulejko, Ki-Hyun Kim
Summary: This study evaluates the photocatalytic removal potential of BiOI photocatalysts in their pristine and composite forms against gaseous Hg-0. The results show promising performance in certain performance metrics, but there are still challenges and limitations to be addressed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Engineering, Environmental
Mengli Zhou, Yang Xu, Guangqian Luo, Qingzhu Zhang, Lin Du, Xiaowei Cui, Zehua Li
Summary: Phosphorus-doped biochars (PBCs) derived from one-step pyrolysis of H3PO4-laden biomass showed improved mercury removal efficiency and surface area. The chemisorption mechanism involving electron transfer was responsible for the enhanced Hg-0 oxidation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Computer Science, Interdisciplinary Applications
Meng-Li Zhao, Fei-Yan Ji, Wen-Jun Lu, Yong Xiao, Da-Shuai Zhang, Lei Zhu
Summary: A novel design approach to wideband, triple-mode resonant microstrip patch antenna with enhanced backfire gain and low side-lobe level is proposed. The antenna consists of a 2.0-wavelength sectorial magnetic dipole and an annular sector reflector with a width that is an odd multiple of 1/4-wavelength. By electrically coupling the principal radiator and the reflector under high-order mode resonance, the antenna achieves enhanced backfire radiation and low side-lobe level. The width of the reflector is determined to be 3/4-wavelength through numerical simulation and experimental validation. The antenna exhibits an impedance bandwidth of 43.6%, a backfire gain of up to 7.3 dBi, and a first side-lobe level as low as -16.4 dB in the V2X-band within the xy-plane.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2023)
Article
Nuclear Science & Technology
Xiaoyan Tian, Sen Chen, Lixin Chen, Huaqi Li, Leitai Shi, Da Li, Xiaofei Luo, Lei Zhu, Weitong Li, Xiaoya Kang
Summary: In this study, a visualized experimental analysis on flow instability phenomenon in a natural circulation system was conducted using deionized water. Different types of flow instability under different heating powers were identified and studied, and the influence of heating power, inlet pressure, and temperature on pressure drop oscillations (PDO) was investigated. The experimental results showed the flow experienced three stages: single-phase, sub-cooled boiling two-phase, and unstable saturated boiling two-phase, with increasing heating power. The analysis demonstrated that the critical heating power of PDO increased with system pressure and decreased with the inlet temperature of the test section. The findings provide insight into flow instability characteristics and facilitate the improvement of flow stability in natural circulation loops under low-pressure conditions.
PROGRESS IN NUCLEAR ENERGY
(2023)
Article
Multidisciplinary Sciences
Yaxuan Lv, Yue Chen, Lei Hu, Haitian Ding, Mengqing Liu, Hailong Li, Yuyang Hou, Qiong Xing
Summary: The purpose of this study was to investigate the association between glucocorticoid use and clinical pregnancy rate in IVF-ET patients. The results showed that appropriate use of glucocorticoids is beneficial for improving the clinical pregnancy rate in women receiving IVF-ET.
Article
Computer Science, Artificial Intelligence
Lei Zhu, Xuefang Li, Deqing Huang, Hairong Dong, Liangcheng Cai
Summary: A distributed fault-tolerant control strategy is proposed for cooperative operation of high-speed trains, considering unmodeled dynamics, time-varying external disturbances, input saturation, and actuator partial failures. The control objective is transformed into a consensus problem of a multi-agent system, and distributed control laws equipped with a command filter and an adaptive neural network are developed. An auxiliary dynamical system is introduced to compensate for input saturation, and an adaptive failure compensation strategy is designed for actuator faults. The performance of the proposed controller is analyzed and demonstrated through numerical simulations.
IEEE TRANSACTIONS ON INTELLIGENT VEHICLES
(2023)
Review
Engineering, Environmental
Xiancheng Ma, Rongkui Su, Zheng Zeng, Liqing Li, Hanqing Wang, Shaobin Wang
Summary: Solar water evaporation is crucial for producing low-energy freshwater, and wood-based photothermal evaporators have attracted attention due to their advantages. This review summarized the benefits and recent progress of wood-based solar evaporators, and discussed their applications in seawater desalination, wastewater purification, and energy production. It also outlined the challenges and future research directions in this field.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Brandon D. D. Nusser, Joseph V. V. Accardo, Lei Zhu
Summary: This work reports the fluorescence, phosphorescence, and photochemical properties of di- and triaryl-substituted-1,2,3-triazoles. The synthesis of regioisomers of substituted triazoles enables a systematic study on the correlation between regiochemistry and excited state properties. The position of the substituent has a significant impact on the fluorescence emission energy, singlet-triplet energy gap, and photochemical reactivity and stability.
Article
Engineering, Electrical & Electronic
Mei Li, Zhi Yang, Zhehao Zhang, Ming-Chun Tang, Lei Zhu
Summary: A miniaturized, high-gain, circular polarization (CP) -reconfigurable antenna using a slow-wave transmission line (SW-TL)-based annular ring is developed. The detailed configuration and working mechanism of the CP-reconfigurable antenna are presented. The antenna exhibits a high gain of 7.83 dBic under a miniaturized annular ring radiator with radius of 0.136?(0), as verified by measured and simulated results.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Computer Science, Artificial Intelligence
Lei Yang, Xinyu Zhang, Jun Li, Li Wang, Minghan Zhu, Lei Zhu
Summary: This paper proposes a lightweight feature pyramid network (Lite-FPN) and an effective regression loss (attention loss) for keypoint-based monocular 3D object detectors in autonomous driving. Experimental results demonstrate significant accuracy improvements by performing multi-scale feature fusion only at sparsely distributed keypoint locations and addressing the misalignment between classification score and localization precision using attention loss. Furthermore, the enhanced performance of SMOKE with our Lite-FPN module surpasses the baseline enhanced by the classic FPN.
KNOWLEDGE-BASED SYSTEMS
(2023)
Article
Computer Science, Software Engineering
Liqing Gao, Lianyu Hu, Fan Lyu, Lei Zhu, Liang Wan, Chi-Man Pun, Wei Feng
Summary: Sign language recognition (SLR) is a challenging task that requires understanding spatial-temporal visual features for translating it into written or spoken language. This study proposes a difference-guided multi-scale spatial-temporal representation learning model (DMST) for SLR, which extracts and enhances key spatial-temporal information and combines multi-scale features for sequence mapping. Experimental results demonstrate that the DMST model outperforms existing methods on four public sign language datasets, highlighting the importance of key spatial-temporal representation for SLR.
Article
Engineering, Manufacturing
Xuzhou Yu, Sai-Wai Wong, Jing-Yu Lin, Yejun He, Wenting Li, Long Zhang, Lei Zhu, Li Yu
Summary: This article proposes a design of a bandpass filter (BPF) based on stepped window resonators (SWRs) that allows inline resonators to generate transmission zeros (TZs). The proposed SWR consists of two metal cavities without any coupling iris, with the larger cavity acting as a bandstop resonator to provide TZs near the passband. The design methodology is validated through the fabrication and measurement of a fourth-order inline BPF with a fractional bandwidth of 1% at 10 GHz.
IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
(2023)
Article
Energy & Fuels
Tong Li, Fanyue Meng, Jianping Yang, Hailong Li
Summary: The recycling of mercury from spent fluorescent lamps is essential to prevent mercury release into the environment. This study adopted distillation method to reclaim mercury from phosphor powder and found that vacuum distillation was favorable for converting oxidized mercury into elemental mercury. Furthermore, the properties of phosphor remained largely unchanged after distillation, ensuring simultaneous recycling of both phosphor and mercury.
Article
Computer Science, Artificial Intelligence
Chaoqun Zheng, Fengling Li, Lei Zhu, Zheng Zhang, Wenpeng Lu
Summary: This paper proposes a Structured Multi-Modal Hashing (SMMH) method, which can learn only a hash model for multiple multimedia retrieval tasks.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Jiaoqin Zheng, Zequn Yang, Hongxiao Zu, Wei Zheng, Lijian Leng, Jianping Yang, Yong Feng, Wenqi Qu, Hailong Li
Summary: This study developed an in situ acid-etching method that self-regulated the water affinity of metal sulfides (MSs) and improved their adsorption selectivity and water resistance. The introduction of undercoordinated sulfur increased the hydrophobicity of MSs and allowed for efficient removal of elemental mercury from industrial flue gas.
Article
Energy & Fuels
Wei Zheng, Zequn Yang, Jiefeng Chen, Weizhen He, Ruiyang Qin, Hongxiao Zu, Wenqi Qu, Jianping Yang, Lijian Leng, Hailong Li
Summary: Ti3C2 MXene/Cu2Se sorbent synthesized via a Lewis acid etching route combined with room-temperature selenization pathway shows excellent Hg0 adsorption performance, with higher adsorption capacity and uptake rate compared to other metal selenides. It also maintains outstanding adsorption performance under high temperature and is applicable to various fuel gas situations.
Article
Environmental Sciences
Yanzhu Chen, Zheng Zeng, Dongyang Liu, Jing Zhang, Yang Guo, Jianwu Zou, Juan Guan, Xiang Xu, Liqing Li
Summary: In this study, non-crystalline solid solution structured Ce-Mn co-oxide nanofibers were creatively prepared by adjusting the Ce/Mn molar ratios. The synthesized nanofibers displayed outstanding low-temperature toluene oxidation activity due to their large specific surface area and high adsorbed oxygen content. The synergistic effect between the non-crystalline structure and active oxygen species greatly improved the catalytic performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
