Article
Environmental Sciences
Ye Liu, Chenglong Ma, Jiacheng Zhou, Lin Zhu, Limei Cao, Ji Yang
Summary: In this study, an ultra-high efficiency catalyst sorbent-Se-x/Activated carbon (Se-x/AC) was synthesized and applied to remove elemental mercury (Hg-0) in coal combustion flue gas. The Se-x/AC exhibited 120 times better adsorption performance compared to conventional activated carbon. The ultra-high mercury removal performance was found to originate from the activated Se species in Se-x/AC, which chemically adsorbed and captured Hg-0 in the flue gas.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
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.
Review
Engineering, Environmental
Dong Wang, Qiuzhun Chen, Xiang Zhang, Chuan Gao, Bin Wang, Xu Huang, Yue Peng, Junhua Li, Chunmei Lu, John Crittenden
Summary: The emission of gaseous pollutants from fossil fuel combustion poses a serious environmental challenge, with the use of SCR systems to convert pollutants into harmless substances highlighted as a practical approach. However, developing catalysts suitable for large-scale commercialization remains challenging, and the efficiency of simultaneous elimination depends on catalyst composition and flue gas parameters.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
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
Multidisciplinary Sciences
Libing Gao, Kai Liu, Shaoqing Guo, Lei Liang, Hongyan Li
Summary: In this study, the dynamic release characteristics of Hg-0 during low calorific value coal combustion were investigated using a laboratory-scale furnace coupled with atomic fluorescence spectroscopy. The results showed that sulfur inhibits the homogeneous oxidation of Hg-0 in flue gas, and the instantaneous intensity of Hg-0 release increases with temperature while the overall release amount gradually decreases.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Materials Science, Ceramics
D. N. V. V. Konda Lutukurthi, Suman Dutta, Dilip Kumar Behara
Summary: In this study, nanosized zinc oxide powders were synthesized using urea-nitrate solution combustion synthesis with activated carbon as a template and secondary fuel. The powders exhibited reduced crystallite size and increased specific surface area when activated carbon was used as a secondary fuel. This led to enhanced photocatalytic activity in dye degradation, showcasing the potential of this single-step synthesis method for various applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
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)
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
Yan Shao, Jinhang Fan, Jiayi Li, Jiangxiu Yang, Yuan Wang, Hongcheng Ruan, Zihao Liu, Honghu Li, Yifei Long, Jiangjun Hu
Summary: Adding dysprosium to modify the Mn-Fe mixed oxide sorbent can enhance its Hg-0 removal performance and SO2 tolerance, making it a promising material for flue gas treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Jian Wu, Wenquan Xie, Jingqiang Tan, Lingfu Liu
Summary: Understanding the occurrence modes of mercury in coal is crucial for environmental and human health. This study utilizes experiments and molecular simulations to reveal that mercury in coal is more likely associated with inorganic minerals rather than organic matter. These findings have significant implications for environmental protection during coal production and utilization.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
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
Energy & Fuels
Yuan Qin, Chi Wang, Xin Sun, Yixing Ma, Xin Song, Fei Wang, Kai Li, Ping Ning
Summary: The simultaneous removal catalysts for SO2, NOx, and Hg-0 were prepared using walnut shell based carbon, with a focus on the effect of carbonization temperature on the surface and structural properties. Research found that Fe dominates among transition metals, and Fe/WSC catalyst can achieve over 80% simultaneous removal efficiency within a specific temperature range.
Article
Biotechnology & Applied Microbiology
Mochammad Arief Budihardjo, Yudha Gusti Wibowo, Bimastyaji Surya Ramadan, Muhamad Allan Serunting, Eflita Yohana, Syafrudin
Summary: This study focuses on using activated carbon from peat soil and coal, as well as CaO from clamshell byproducts, to reduce mercury content in artificial landfill leachate. Results show that mercury reduction was successful by 81% during the adsorption process at different pH levels.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Chemical
Xiaopeng Zhang, Yuying Wei, Lianhao Zhang, Xinxin Wang, Ning Zhang, Junjiang Bao, Gaohong He
Summary: Adsorption is an efficient method for removing Hg0 from coal flue gas. In this study, Co3O4 nanotubes were embedded into GO nanosheets to prepare a composite material with good dispersion. The GO-Co3O4-1-2 sorbent showed the best O beta/OT ratio and redox capacity, providing more active sites for O2 capture and activation. The Hg0 removal efficiency of GO-Co3O4-1-2 reached 94.67% with good stability.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Energy & Fuels
Sinang Choi, Sang-Sup Lee
Summary: Activated carbon injection upstream of a particulate matter control device is commonly used to control mercury in coal-fired flue gas. Nitrogen oxides and hydrogen chloride can enhance the efficiency of activated carbon for mercury removal. Among different chloride compounds impregnated on activated carbon, copper chloride impregnated activated carbon showed the highest mercury adsorption efficiency under specific conditions.
Article
Chemistry, Physical
Hsin-Kai Huang, Yi-Kai Chih, Wei-Hsin Chen, Cheng-Yu Hsu, Kai-Jhei Lin, Hong -Ping Lin, Chun-Han Hsu
Summary: A green template-free method is proposed for the synthesis of mesoporous Ni-Cu/Al2O4 catalyst, which shows excellent catalytic performance and regeneration capability in methanol steam reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemistry & Molecular Biology
Chun-Han Hsu, Cheng-Han Chung, Tzu-Hsien Hsieh, Hong-Ping Lin
Summary: Multiporous carbons (MPCs) were prepared using ZnO as a template and biomass pyrolysis oil as a carbon source. The characteristics of the prepared MPCs can be controlled by adjusting the ZnO/oil ratio. A sulfur/MPC (S/MPC) composite was prepared by blending sulfur powder with the prepared MPCs and showed promising performance as an electrode material in lithium-ion batteries.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Kai-Jhei Lin, Yi-Kai Chih, Wei-Hsin Chen, Hsin-Kai Huang, Hong-Ping Lin, Chun-Han Hsu
Summary: In this study, a high surface area mesoporous Cu-Ni/Al2O4 catalyst was synthesized through a simple hydrothermal reconstruction process using low-cost activated alumina. The catalyst exhibited good catalytic performance for hydrogen production via partial oxidation of methanol, while maintaining its stability. The hydrothermal reconstruction method described in this study is facile and can be extended to the preparation of other mesoporous metal-alumina materials for catalyst applications.
Article
Chemistry, Multidisciplinary
Chao-Hui Liu, Ming-Xue Wei, Chun-Han Hsu, Hong-Ping Lin, Yu-Chun Wu
Summary: In this study, SiO2 porous hollow spheres with ultralow refractive index were synthesized using a templating method, allowing for easy control of refractive indices. A droplet coatings method was proposed for displaying distinct structural colors and high angular resolution. Additionally, metal nanoparticles coated on the SPHS surface increased the SERS intensity.
Article
Chemistry, Multidisciplinary
Yu-Chien Ko, Chun-Hsiang Hsu, Chang-An Lo, Chun-Ming Wu, Hung-Ling Yu, Chun-Han Hsu, Hong-Ping Lin, Chung-Yuan Mou, Heng-Liang Wu
Summary: In this study, a low-cost carbon material (XU76 carbon) was synthesized as a sulfur host to address the issues of polysulfide dissolution and shuttle effect in lithium-sulfur batteries. XU76 carbon, with high surface area, good electrical conductivity, and optimized distribution of interconnected micromesopores, efficiently traps polysulfide intermediates and improves sulfur redox kinetics. The sulfur-XU76 carbon cathode exhibits excellent cycling stability and high discharge capacity in experimental tests.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Chao Hui Liu, Hong Ping Lin
Summary: In this study, nano-sized TiO2/SiO2 cenospheres with a rough surface were successfully synthesized using a designed coating and hydrothermal treatment for application in solar thermal reflective coating. These TSCSs demonstrate significant UVA absorption, high reflectance of visible-IR radiation, and strong scattering of incident light. Additionally, they have good thermal insulation and water resistance.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2022)
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
Engineering, Chemical
Thi Xuan Quynh Nguyen, Shiao-Shing Chen, M. Pasawan, Huy Quang Le, Hau-Ming Chang, Nguyen Cong Nguyen
Summary: In this study, Nylon 6 (N6) membranes blended with ZnO nanoparticles were fabricated by the electrospinning technique, which showed excellent performance in separating water from oily wastewater. The membranes exhibited high flux, fouling resistance, and removal efficiency for different pollutants. This research provides a feasible approach for treating oil-containing wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Energy & Fuels
Yi-Kai Chih, Wei-Hsin Chen, Siming You, Chun-Han Hsu, Hong -Ping Lin, Salman Raza Naqvi, Veeramuthu Ashokkumar
Summary: This study aims to develop highly-porous Ni-Cu/Al2O3 catalysts for hydrogen production from the steam reforming of methanol. The impacts of selected operating factors on hydrogen productivity are investigated and the optimal conditions are determined. The results show that the prepared catalysts exhibit superior performance and stability compared to those in the literature.
Article
Engineering, Chemical
Hau-Ming Chang, Shiao-Shing Chen, Wen-Shing Chang, Thi Xuan Quynh Nguyen, Nguyen Cong Nguyen
Summary: The designed dynamic osmotic membrane bioreactor (DR-OMBR) with low-speed rolling motion and cross-flow velocity effectively alleviated membrane fouling, resulting in stable water flux and high removal efficiency.
JOURNAL OF MEMBRANE SCIENCE
(2022)
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
Bao-Trong Dang, Xuan-Thanh Bui, Thanh-Tin Nguyen, Huu Hao Ngo, Long D. Nghiem, Ky-Phuong-Ha Huynh, Thi-Kim-Quyen Vo, Thi-Dieu-Hien Vo, Chitsan Lin, Shiao-Shing Chen
Summary: Co-culture of microalgae-activated sludge has the potential to purify wastewater while reducing energy demand from aeration. This study used a mechanically stirred membrane photobioreactor to evaluate the impact of biomass retention time on treatment performance and membrane fouling. Results showed that the highest productivity was achieved at a biomass retention time of 7 days, with a lower retention time leading to increased fouling rates. The optimum biomass retention time of 7 days allowed for sufficient access to light and nutrient exchange for mutualistic interactions between microalgae and activated sludge.
SCIENCE OF THE TOTAL ENVIRONMENT
(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.
