Article
Engineering, Environmental
Zhengcheng Wen, Zheyu Shi, Zhihua Wang, Qunxin Huang
Summary: This paper numerically studies the reacting flow field for the oxidation of Hg-0 by O-3 through ozone injection method. A reduced chemical mechanism is obtained and used to simulate the reacting flow field. The study reveals that temperature and O-3/NO molar ratio are key factors, while jet velocity and NO concentration are important factors for Hg-0 oxidation efficiency. Moreover, the amount of NO3 generated in the flue gas is highly correlated with the oxidation efficiency of Hg-0, suggesting that increasing the local generation of NO3 could improve the efficiency of Hg-0 oxidation. This study provides valuable insights for future engineering applications.
ENVIRONMENTAL ENGINEERING RESEARCH
(2023)
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
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
Environmental Sciences
Parveen Dalal, Sridhar Dalai, Snigdha Khuntia
Summary: This study investigates the effect of different parameters on the simultaneous removal of SO2 and NOx through a wet process. Two different methods, ozone/UV and H2O2/UV, are compared for the removal of flue gases. The combination of UV with O-3 and H2O2 plays a crucial role in generating hydroxyl radicals, leading to the maximum removal of flue gases.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Jerzy Gagan, Kamil Smierciew, Michal Lukaszuk, Andrzej Pawluczuk, Dariusz Butrymowicz, Mateusz Kedzierski, Tadeusz Zielinski
Summary: This paper presents the motivations for developing innovative jet ejector scrubbers to reduce sulfur oxide emissions in marine engineering. Experimental investigations showed that the proposed jet ejector scrubber can effectively reduce SO2 emissions without additional filters, and can also reduce other chemical compounds in the exhaust gas. The results demonstrate the potential of this scrubber for marine applications.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Raill E. Orozco-Mena, Raill A. Marquez, Kenya I. Mora-Dominguez, Virginia H. Collins-Martinez, Eduardo F. Herrera-Peraza, Samuel B. Perez-Vega, Edgar Valenzuela, Victor H. Ramos-Sanchez
Summary: Coal consumption has led to an increase in flue gas emissions, requiring new technologies for effective utilization. Research on an ammonia-based desulfurization process shows potential for hydrogen and fertilizer production, while photooxidation of captured flue gas emissions can enable large-scale hydrogen production.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Jin Zhao, Xueqian Wu, Yanping Ma, Wei Liu, Zhen Li, Songjian Zhao
Summary: Mercury, a heavy metal, poses serious threats to the environment and human health. This study synthesized CuS materials with different morphologies to remove Hg0 by controlling their crystal growth time, rate, and direction. The materials were characterized using various techniques. It was found that CuS-2h had lower crystallinity and rougher surface, which provided more active sites and defects for Hg0 removal. The performance and reaction mechanism of different CuS materials in removing Hg0 were systematically studied. The results showed that CuS-2h exhibited excellent mercury removal efficiency in the temperature range of 50°C to 125°C and had good resistance to SO2 toxicity. The superior performance of CuS-2h can be attributed to the exposure of more active sites by copper and the presence of S22- which promotes the oxidative adsorption of mercury.
Article
Energy & Fuels
Hao Xiao, Hao Ma, Lei Wang, Zhibang Liu, Zhenjun Yang, Jinghui Dong, Lei Shao
Summary: This study investigated the intensification of HCl removal in a rotor-stator reactor, which showed better mass-transfer performance and potential economic advantages compared to conventional columns. The comparison experiments indicated that the rotor-stator reactor had a superior capability for HCl removal in flue gas, with higher KGa and lower height of a transfer unit compared to a rotating packed bed. An artificial neural network model was established to predict the KGa, demonstrating the rotor-stator reactor as an effective process intensification technology for HCl removal from flue gas.
Article
Engineering, Environmental
Wenhao Huang, Zhenshan Huang, Zhuoyao Chen, Zuotong Wu, Zaishan Wei
Summary: Flue gas cadmium is a persistent and toxic pollutant that can pose a threat to human health and the environment. A study investigated the use of a sulfate reducing membrane biofilm reactor (MBfR) for removing cadmium from flue gas. The reactor achieved a high removal efficiency of 95.1% and Desulfovibrio was found to be the dominant genus. The biofilm formation involved the conversion of cadmium into cadmium sulfide (CdS) and complexation with humic acids, resulting in bio-stabilization of the cadmium-containing flue gas.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Energy & Fuels
Zuotong Wu, Zhuoyao Chen, Wenhao Huang, Zaishan Wei
Summary: The sulfate-reducing membrane biofilm reactor (SRBR) was studied for removing arsenic trioxide (As2O3) from flue gas generated by sludge incineration. The reactor achieved a removal efficiency of 94.4%. Desulfovibrio, UC_Clostridiales, and Pseudodesulfovibrio were the dominant bacterial genera, with Desulfovibrio playing a key role in arsenite oxidation and sulfate reduction. The biofilm in the SRBR facilitated the stabilization of arsenic in the form of Fe-As-S and HA-As through biocomplexation, biosorption, and biodeposition.
Article
Engineering, Environmental
Chang Wang, Yulei Ma, Pengjian Lv, Jian Mei, Shijian Yang
Summary: Recently, sulfureted metal oxides have shown excellent performance in the catalytic oxidation of Hg-0 to HgCl2 using HCl as an oxidant at low temperatures. However, the lack of reaction mechanisms and kinetics has limited further improvement in Hg-0 conversion. This study investigated the reaction mechanism of Hg-0 conversion over sulfureted HPMo/gamma-Fe2O3 with HCl at low temperatures. The results showed that both chemical adsorption as HgS and catalytic oxidation to HgCl2 contribute to Hg-0 conversion.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Snigdha Khuntia, Manish Kumar Sinha, Parveen Dalal, Arunima Singh
Summary: The combination of ozone and UV irradiation in aqueous mode has been investigated for removing SO2 and NOX. Various combinations of ozone, flue gas, and UV irradiation power were attempted to achieve complete removal of flue gases. The amount of hydroxyl radicals generated by UV and O3 combination was measured. A comprehensive comparison of the contribution of oxidants such as ozone, UV, and hydroxyl radicals was depicted. To reduce power consumption, it is important to find a suitable route, which has been achieved by changing the operation mode of gases, resulting in over 95% NOX and almost 100% SO2 removal.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Physical
Pedro J. Castro, Vladimir Kello, Ivan Cernusak, Theodore S. Dibble
Summary: Mercury is emitted to the atmosphere as gaseous Hg(0) and enters ecosystems through vegetation uptake. The redox chemistry of atmospheric mercury strongly influences its fate and global biogeochemical cycling.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Engineering, Chemical
Peng Liu, Shiliang Yang, Jianhang Hu, Hua Wang
Summary: This study used a multi-phase particle-in-cell method to simulate the motion of particles of different sizes in a flue gas desulfurization reactor, and employed the double-film theory to simulate the heat and mass transfer processes. Various factors affecting gas-solid flow and mass transfer processes were comprehensively analyzed. The results showed good agreement between the simulated and experimental results, validating the reliability of the model.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Awan Bhati, Aritra Kar, Vaibhav Bahadur
Summary: This study predicts the performance of a bubble column reactor (BCR) for CO2 hydrate formation from flue gas and pure CO2 streams using a modeling framework. The study focuses on two performance parameters: gas consumption rate and conversion factor. The analysis shows that increasing pressure, decreasing temperature, and increasing CO2 mole fraction lead to higher performance parameters. This study provides a basis for the design and operation of BCRs for CO2 hydrates-based CCS applications.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Review
Chemistry, Multidisciplinary
Dongjing Liu, Bin Li, Jiang Wu, Yangxian Liu
ENVIRONMENTAL CHEMISTRY LETTERS
(2020)
Article
Energy & Fuels
Xuan Han, Hui Chen, Yangxian Liu, Jianfeng Pan
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2020)
Article
Engineering, Environmental
Yan Wang, Yong Wang, Yangxian Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Yan Wang, Yangxian Liu, Shuo Shi
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Energy & Fuels
Yan Wang, Yong Wang, Yangxian Liu
Review
Chemistry, Multidisciplinary
Friday O. Ochedi, Jianglong Yu, Hai Yu, Yangxian Liu, Arshad Hussain
Summary: Anthropogenic emissions of greenhouse gases lead to global warming, ocean acidification, polar ice melting, sea level rise, droughts, and hurricanes, threatening human health and the global economy. To combat this, cost-effective technologies for CO(2) capture are necessary. Current research focuses on developing more economical, effective, green, and sustainable technologies for CO(2) capture. Various methods based on solutions, solvents, and processes have been explored to enhance CO(2) absorption performance, with a particular interest in incorporating membrane and microencapsulation technologies to improve absorption selectivity.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Energy & Fuels
Dongjing Liu, Bin Li, Yangxian Liu, Jiang Wu
Summary: Experimental results show that CuS decoration can enhance the mercury capture efficiency of h-BN, with 10CuS/h-BN performing the best. The presence of NO inhibits Hg-0 removal to some extent, while the presence of SO2 hardly shows any impact on Hg-0 capture.
Article
Energy & Fuels
Wei Yang, Yangxian Liu
Summary: Two kinds of seaweed biomass-based porous carbons were prepared by microwave activation/H2O2 modification method. The modified porous carbons showed excellent Hg-0 removal capacity due to the presence of oxygen-containing functional groups as active sites for Hg-0 capture.
Article
Engineering, Chemical
Hui Chen, Xuan Han, Yangxian Liu
Summary: The novel H2SO4/H2O2 combining modification significantly enhances the desulfurization performance of algae biochars for removing gaseous H2S, mainly by improving the pore structure and increasing O-containing functional groups.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
Article
Energy & Fuels
Wei Chen, Jianfeng Pan, Wenming Yang, Yangxian Liu, Baowei Fan, Yao Lu, Peter Otchere
Summary: The study highlighted the importance of improving combustion performance in a diesel Wankel engine by investigating dual-fuel mixture formation and the effects of assisted-ignition timing and position on engine combustion characteristics. Results showed that using dual assisted-ignition spark plugs could enhance fuel burning rate and improve engine combustion performance, with a more concentrated mixture near spark plugs leading to increased pressure in-cylinder and combustion rate. Symmetrical arranged dual assisted-ignition spark plugs and ignition timing of 35°CA BTDC were identified as preferred practical application schemes, significantly increasing peak pressure in-cylinder compared to single spark plug ignition and different ignition timing schemes.
Article
Energy & Fuels
Ying Li, Yangxian Liu, Wei Yang, Lei Liu, Jianfeng Pan
Summary: A clean modification method combining microwave activation and H2O2 impregnation of bio-char was proposed in this study to enhance the mercury adsorption capacity, which effectively improved the Hg0 removal efficiency by improving the pore structure and functional groups of biomass porous carbons. Oxygen and nitric oxide play a significant role in the mercury removal process.
Article
Biotechnology & Applied Microbiology
Wei Yang, Yangxian Liu, Jianfeng Pan
Summary: The study investigates the control of mercury emissions in flue gas using seaweed-derived porous biochars, finding that microwave activation/hydrogen peroxide treatment increases oxygen content and aids in Hg-0 removal. Porous biochars modified with 30% hydrogen peroxide exhibit the best performance at 120 degrees C.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Review
Engineering, Environmental
Yan Wang, Jianglong Yu, Zhihua Wang, Yangxian Liu, Yongchun Zhao
Summary: Arsenic is highly toxic and its release from coal combustion is a major concern. Various technologies for arsenic removal exist, with calcium-based adsorbents proving to be efficient. Future research should focus on developing advanced adsorbents with specific properties to overcome current limitations. Collaboration of multiple systems and advanced oxidation technologies show promising potential for high removal efficiency and multi-pollutant removal.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Multidisciplinary
Dongjing Liu, Bin Li, Jiang Wu, Yangxian Liu
Summary: Chalcogen-based adsorbents, particularly sulfur-modified ones, have shown efficient removal of Hg-0 from gas streams. However, the presence of acidic flue gas components and steam may reduce the removal efficiency. Mineral sulfides and metal selenides exhibit outstanding Hg-0 removal performances, but their application may be limited by temperature constraints.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Review
Chemistry, Multidisciplinary
Friday O. Ochedi, Dongjing Liu, Jianglong Yu, Arshad Hussain, Yangxian Liu
Summary: CO2 emissions contribute to climate change induced by greenhouse effects, and carbon capture, utilization, and storage are key strategies to reduce these emissions. This article discusses the conversion of CO2 into value-added products through photocatalytic, electrocatalytic, and photoelectrocatalytic processes, emphasizing the importance of using cheap, non-toxic, stable catalysts for optimal results.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Environmental
Xinping Zhang, Yuxin Guo, Xiaoyang Liu, Shun-Yu Wu, Ya-Xuan Zhu, Shao-Zhe Wang, Qiu-Yi Duan, Ke-Fei Xu, Zi-Heng Li, Xiao-Yu Zhu, Guang-Yu Pan, Fu-Gen Wu
Summary: This study develops a nanotrigger HCFT for simultaneous photodynamic therapy and light-triggered ferroptosis therapy. The nanotrigger can relieve tumor hypoxia, induce enhanced photodynamic reaction, and facilitate the continuation of Fenton reaction, ultimately leading to lethal ferroptosis in tumor cells.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Olumide Bolarinwa Ayodele, Toyin Daniel Shittu, Olayinka S. Togunwa, Dan Yu, Zhen-Yu Tian
Summary: This study focused on the semihydrogenation of acetylene in an ethylene-rich stream using two alloyed Pt catalysts PtCu and PtCo. The PtCu catalyst showed higher activity and ethylene yield compared to PtCo due to its higher unoccupied Pt d-orbital density. This indicates that alloying Pt with Cu is more promising for industrial relevant SHA catalyst.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Guowei Chen, Wen-Cheng Chen, Yaozu Su, Ruicheng Wang, Jia-Ming Jin, Hui Liang, Bingxue Tan, Dehua Hu, Shaomin Ji, Hao-Li Zhang, Yanping Huo, Yuguang Ma
Summary: This study proposes an intramolecular dual-locking design for organic luminescent materials, achieving high luminescence efficiency and performance for deep-blue organic light-emitting diodes. The material also exhibits unique mechanochromic luminescence behavior and strong fatigue resistance.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Joren van Stee, Gregory Hermans, Jinu Joseph John, Koen Binnemans, Tom Van Gerven
Summary: This work presents a continuous solvent extraction method for the separation of cobalt and nickel in a millifluidic system using Cyphos IL 101 (C101) as the extractant. The optimal conditions for extraction performance and solvent properties were determined by investigating the effects of channel length, flow rate, and temperature. The performance of a developed manifold structure was compared to a single-channel system, and excellent separation results were achieved. The continuous separation process using the manifold structure resulted in high purity cobalt and nickel products.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Yan Xu, Jingai Jiang, Xinyi Lv, Hui Li, Dongliang Yang, Wenjun Wang, Yanling Hu, Longcai Liu, Xiaochen Dong, Yu Cai
Summary: A programmed gas release nanoparticle was developed to address the challenges in treating diabetic infected wounds. It effectively removes drug-resistant pathogens and remodels the wound microenvironment using NO and H2S. The nanoparticle can eliminate bacteria and promote wound healing through antibacterial and anti-inflammatory effects.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Tong Xia, Zhilin Xi, Lianquan Suo, Chen Wang
Summary: This study investigated a highly efficient coal dust suppressant with low initial viscosity and high adhesion-solidification properties. The results demonstrated that the dust suppressant formed a network of multiple hydrogen bonding cross-linking and achieved effective adhesion and solidification of coal dust through various chemical reactions.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jinzhi Cai, Zhenshan Li
Summary: A density functional theory-based rate equation was developed to predict the gas-solid reaction kinetics of CaO carbonation with CO2 in calcium looping. The negative activation energy of CaO carbonation close to equilibrium was accurately predicted through experimental validation.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Jianxiong Chen, Fuhao Ren, Ningning Yin, Jie Mao
Summary: This study presents an economically efficient and easily implementable surface modification approach to enhance the high-temperature electrical insulation and energy storage performance of polymer dielectrics. The self-assembly of high-insulation-performance boron nitride nanosheets (BNNS) on the film surface through electrostatic interactions effectively impedes charge injection from electrodes while promoting charge dissipation and heat transfer.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Zijian Li, Zhaohui Yang, Shao Wang, Hongxia Luo, Zhimin Xue, Zhenghui Liu, Tiancheng Mu
Summary: This study reports a strategy for upgrading polyester plastics into value-added chemicals using electrocatalytic methods. By inducing the targeted transfer of *OH species, polyethylene terephthalate was successfully upgraded into potassium diformate with high purity. This work not only develops an excellent electrocatalyst, but also provides guidance for the design of medium entropy metal oxides.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Navneet Singh Shekhawat, Surendra Kumar Patra, Ashok Kumar Patra, Bamaprasad Bag
Summary: This study primarily focuses on developing a sulphur dyeing process at room temperature using bacterial Lysate, which is environmentally friendly, energy and cost effective, and sustainable. The process shows promising improvements in dye uptake and fastness properties.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Dengjia Shen, Hongyang Ma, Madani Khan, Benjamin S. Hsiao
Summary: This study developed cationic PVC nanofibrous membranes with high filtration and adsorption capability for the removal of bacteria and hexavalent chromium ions from wastewater. The membranes demonstrated remarkable performance in terms of filtration efficiency and maximum adsorption capacity. Additionally, modified nanofibrous membranes were produced using recycled materials and showed excellent retention rates in dynamic adsorption processes.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Xiaoyan Wang, Zhikun Wang, Ben Jia, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: Inspired by photosystem II, self-supported Fe-doped NiCoP nanowire arrays modified with carboxylate were constructed to boost industrial-level overall water splitting by employing the concerted proton-coupled electron transfer mechanism. The introduction of Fe and carboxyl ligand led to improved catalytic activity for HER and OER, and NCFCP@NF exhibited long-term durability for overall water splitting.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Pengyao Yu, Ge Yang, Yongming Chai, Lubomira Tosheva, Chunzheng Wang, Heqing Jiang, Chenguang Liu, Hailing Guo
Summary: Thin LTA zeolite membranes were prepared through secondary growth of nano LTA seeds in a highly reactive gel, resulting in membranes with superior permeability and selectivity in gas separation applications.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Baiqin Zhou, Huiping Li, Ziyu Wang, Hui Huang, Yujun Wang, Ruichun Yang, Ranran Huo, Xiaoyan Xu, Ting Zhou, Xiaochen Dong
Summary: The use of machine learning to predict the performance of specific adsorbents in phosphate adsorption shows great promise in saving time and revealing underlying mechanisms. However, the small size of the dataset and insufficient detailed information limits the model training process and the accuracy of results. To address this, the study employs a fuzzing strategy that replaces detailed numeric information with descriptive text messages on the physiochemical properties of adsorbents. This strategy allows the recovery of discarded samples with limited information, leading to accurate prediction of adsorption amount, capacity, and kinetics. The study also finds that phosphate uptake by adsorbents is generally through physisorption, with some involvement of chemisorption. The framework established in this study provides a practical approach for quickly predicting phosphate adsorption performance in urgent scenarios, using easily accessible information.
CHEMICAL ENGINEERING JOURNAL
(2024)
Article
Engineering, Environmental
Paula Alejandra Lamprea Pineda, Joren Bruneel, Kristof Demeestere, Lisa Deraedt, Tex Goetschalckx, Herman Van Langenhove, Christophe Walgraeve
Summary: This study evaluates the use of four esterified fatty acids and three vegetable oils as absorption liquids for hydrophobic VOCs. The experimental results show that isopropyl myristate is the most efficient liquid for absorbing the target VOCs.
CHEMICAL ENGINEERING JOURNAL
(2024)
