Article
Green & Sustainable Science & Technology
Liang Ma, Xiaoxu Duan, Jiwei Wu, Jianping Li, Lv Peng, Liwang Wang, Lingyu Xiao
Summary: This study proposes a new flue gas purification technology that achieves integrated and efficient desulfurization and denitrification by combining jet atomization and swirl enhancement. Industrial tests show that the technology has a high purification efficiency, helping enterprises save costs and protect the environment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Review
Engineering, Environmental
Shuai Liu, Zewei Liu, Hengxi Zhu, Zixuan Wang, Junjiang Guo, Xiaoyue Zhang, Hongxin Yu, Xiangdong Yue, Ping Ning, Bin Li
Summary: This paper is a review of the role of red mud in flue gas desulfurization and denitrification. It compares new technologies with traditional ones and summarizes the characteristics, advantages, and disadvantages of new technologies, providing a foundation for their large-scale application. The review also gives suggestions for future research on red mud utilization, desulfurization technology, and denitration technology.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Lin Cui, Jingwen Lu, Xiangda Song, Lishu Tang, Yuzhong Li, Yong Dong
Summary: Limestone-gypsum wet flue gas desulfurization (WFGD) is the most effective desulfurization technique. By coupling WFGD with condensation desulfurization using a condensing heat exchanger (CHE), significant energy savings can be achieved while improving desulfurization efficiency.
Article
Engineering, Chemical
Mengxi Zhao, Changjun Zou
Summary: MgO nanofluids show better desulfurization effect in wet desulfurization process compared to MgO slurry by improving desulfurization efficiency. The density and viscosity of MgO nanofluids increase with concentration, but decrease with temperature. Properly reducing particle size can enhance the desulfurization efficiency of MgO absorbent in removing SO2 from flue gas.
Article
Green & Sustainable Science & Technology
Tong Li, Ting Su, Jiang Wang, Suiyi Zhu, Yuxin Zhang, Zhi Geng, Xianze Wang, Yidi Gao
Summary: A facile low-temperature thermal route was developed to treat the acidic and highly saline flue gas wastewater concentrate generated from desulfurization wastewater in power/heating plants. The method effectively removed sulfate and nitrate from the concentrate without generating any hazardous waste, and produced recycled water and value-added natroalunite particles.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Hongyu Tian, Jian Pan, Deqing Zhu, Zhengqi Guo, Congcong Yang, Yuxiao Xue, Dingzheng Wang, Yingyu Wang
Summary: This research proposes an innovative one-step process for activated carbon production and direct reduction iron using low-rank coal. The activated carbon obtained through this process shows superior physical and chemical properties and performs well in desulfurization and denitrification.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Jingqi Li, Chengzhi Li, Wei Zhang, Juhua Zhang, Zhengliang Xue
Summary: In this study, a mathematical model is established to analyze the performance of an oxygen blast furnace in treating SO2 and NOx in the sintering flue gas. The results show that injecting sintering flue gas can significantly increase energy efficiency, but reduce exergy efficiency. Therefore, this method is a promising approach to promote cleaner production in the steelmaking or other relevant chemical engineering industries.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Chemical
Junqi Cheng, Jiawei Li, Xinxiang Pan, Zhitao Han
Summary: This study investigates the synergistic effect of dual oxidants NaClO and O3 on the removal of NOx. The results show that high NOx removal efficiency can be achieved under specific molar ratios and concentrations. The reaction paths and influencing factors of wet scrubbing NaClO solution in situ with O3 injection in the denitration process are also analyzed.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Environmental
Senlin Tian, Shanshan Yang, Jianfei Wang, Qiuxian Li, Chen Li, Xiangfen Cui, Ping Ning
Summary: In this study, an integrated strategy for simultaneous desulfurization and denitrification is proposed, which efficiently converts sulfur and nitrogen resources and recovers economic costs by producing compound fertilizer.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Feng Shi, Jia-nan Gu, Diwen Ying, Kan Li, Naiqiang Yan, Juexiu Li, Jinping Jia
Summary: This study investigates a combined system of Na2SO3 wet absorption bipolar membrane electrodialysis for efficient absorption and regeneration of SO2 from industrial flue gas. The results show that high absorption and regeneration efficiencies can be achieved by simultaneous addition of acid and alkali, reaching 100% efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Bang Li, Yanbin Yun, Guicheng Liu, Chunli Li, Xinyang Li, Muhammad Hilal, Woochul Yang, Manxiang Wang
Summary: The study found that softening pre-treatment can effectively improve the water reclamation performance of FGDW direct contact membrane distillation and reduce membrane fouling. The pre-treatment can efficiently remove heavy ions and prevent membrane fouling, achieving high salt and organic matter rejection rates.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Yanni Xuan, Haitao Gao, Hong Tian, Zhangmao Hu, Jingjing Ma, Qingbo Yu
Summary: Ce-modified Mn3O4/diatomite sorbents with different Ce/Mn molar ratios were prepared by the sol-gel method to improve the desulfurization performance of single Mn-based sorbents. Results showed that the addition of CeO2 significantly enhanced the desulfurization activity by forming strong redox couples with Mn3O4. The designed CeO2-Mn3O4 binary oxides with a micro-reticulated framework restrained the agglomeration of active component and provided more active sites, leading to improved utilization of active component.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Jin Yuan, Jianjun Chen, Zhen Wang, Rongqiang Yin, Xiao Zhu, Kun Yang, Yue Peng, Junhua Li
Summary: Carbon-based catalysts play a crucial role in flue gas desulfurization (FGD) by controlling SO2 emissions, but details of active sites and desulfurization mechanism are still unclear. In this study, active sites on carbon catalysts for FGD were identified as ketonic carbonyl (C=O) groups. The desulfurization reaction on carbon catalysts mainly proceeds via the Langmuir-Hinshelwood mechanism, where C=O groups chemically absorb SO2 and adjacent sp2-hybridized carbon atoms activate O2.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Environmental Sciences
Sen Liu, Wei Liu, Fen Jiao, Wenqing Qin, Congren Yang
Summary: This article reviews the production and beneficial utilizations of FGD gypsum in China, where the government has implemented numerous desulfurization measures since 2006 to address serious SO2 emissions. With production exceeding 108 tons and continually increasing energy consumption, the properties and applications of FGD gypsum are summarized here.
ENVIRONMENTAL POLLUTION
(2021)
Article
Chemistry, Analytical
Kun Duan, Yongbin Ji, Daxin Wen, Zhimin Lu, Ke Xu, Wei Ren
Summary: In this study, a mid-infrared fiber-coupled laser absorption sensor was developed for the in situ and simultaneous detection of NH3 and NO in flue gas. The sensor exhibits low detection limits and good performance, with negligible spectral interferences under typical flue gas conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Baowei Wang, Chengyu Wang, Wenxia Yu, Zhenhua Li, Yan Xu, Xinbin Ma
MOLECULAR CATALYSIS
(2020)
Article
Engineering, Chemical
Baowei Wang, Xiaoxi Wang, Bo Zhang
Summary: The introduction of segmented outer electrodes significantly promotes the decomposition of CO2 in the designed plasma reactors, with the highest conversion rate of 13.1% achieved at an applied voltage of 18 kV. Compared to traditional devices, the proposed segmented outer electrode micro-plasma reactor shows a substantial increase in conversion rate by 39.4%, providing higher CO2 conversion and acceptable energy efficiency.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Chengyu Wang, Baowei Wang, Shize Liu, Jijun Zou
Review
Engineering, Environmental
Baowei Wang, Huijuan Su, Bo Zhang
Summary: The cavitation-based process is a promising technology for treating industrial effluents due to its cost-effectiveness, high energy efficiency, and large-scale operation capability. Researchers are exploring the influence of different geometric parameters and operating conditions on cavitation reactions in various HC reactors. The study introduced the formation of HC, the mechanism of pollutant degradation by HC, and the factors affecting cavitation conditions in different cavitating devices.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Applied
Baowei Wang, Shize Liu, Yeping Peng, Chengyu Wang, Jijun Zou
Summary: Dry reforming (DR) and the coupling of DR with partial oxidation reforming (POR) of n-heptane were investigated in a gliding arc discharge (GAD) plasma reactor. The effects of input power, oxygen to carbon ratio, and residence time on the DR process were evaluated, with the highest CO2 conversion rate reaching 42.6%. Optical emission spectra of n-heptane DR and DR coupled with POR were analyzed to detect different reactive species.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Chemical
Baowei Wang, Tingting Wang, Huijuan Su
Summary: The degradation of organic pollutants using hydrodynamic cavitation (HC) has advantages of simple structure, easy operation, and low maintenance costs. Combining HC with other advanced oxidation processes (AOPs) can significantly improve degradation efficiency, reduce chemical consumption, and save costs. Optimization of reactor type, parameters, and operational conditions can enhance the degradation performance of organic pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Chemistry, Physical
Qiang Wang, Zijia Yin, Baowei Wang, Yan Xu, Xinbin Ma, Zhenhua Li
Summary: By adjusting the hydrothermal time and solution pH value, the stability of MoS2 catalyst can be modulated for improved methanation performance. The catalysts with high stacking layers prepared in extended hydrothermal time and weak acidic solution were found to be stable with no obvious coke deposition during the reaction. Density functional theory simulation showed that the catalysts with high stacking layers had enhanced interlayer interactions, leading to resistance against deactivation by sintering or substitution of active S atoms by O atoms.
MOLECULAR CATALYSIS
(2022)
Article
Engineering, Chemical
Baowei Wang, Yi Cheng, Chengyu Wang, Jijun Zou
Summary: A knife-type gliding arc discharge plasma reactor was developed for steam-methane reforming (SMR) H2 production. The kinetic model was established and the effects of various factors on SMR reactions were investigated. The experimental and model results showed good agreement.
CHEMICAL ENGINEERING SCIENCE
(2022)
Review
Environmental Sciences
Baowei Wang, Yu Wang
Summary: This paper summarizes the research progress of PS activation methods in the field of wastewater treatment, including the advantages, disadvantages, and influencing factors of various physical and chemical activation methods. The possible activation mechanisms are discussed, and future development directions are pointed out.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Baowei Wang, Hao Jiao, Huijuan Su, Tingting Wang
Summary: The degradation of pefloxacin (PEF) using hydrodynamic cavitation (HC) combined with oxidants was investigated. The results showed that HC alone achieved a high removal efficiency of PEF, and the combination of HC with H2O2 or O3 further enhanced the removal efficiency and energy efficiency of PEF.
Article
Energy & Fuels
Shize Liu, Baowei Wang, Yi Cheng, Chengyu Wang, Jijun Zou
Summary: This study investigated the ethanol plasma partial oxidative reforming process in a gliding arc discharge (GAD) plasma reactor through experiments and modeling. The effects of oxygen to ethanol molar ratio, flux, and input power on the yields of main products were evaluated. Optical emission spectroscopy (OES) detected excited-state species, and a 0-D model was established to describe the pathways of reforming processes.
Article
Engineering, Environmental
Baowei Wang, Tingting Wang, Huijuan Su
Summary: As a kind of AOPs, hydrodynamic cavitation (HC) is an energy-saving and easily scalable technology. Studying the degradation of dye molecules using HC is of great significance due to the toxicity, chroma, and difficult biodegradation of dyes. In this study, the HC treatment of methylene blue (MB) was investigated, and the effects of inlet pressure, solution pH, and initial concentration on MB degradation were explored. The results showed that introducing ozone had better degradation performance, and the reaction mechanism and path of MB were proposed based on the detection of intermediate products using LC-MS.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Baowei Wang, Xiaoyan Li, Xiaoxi Wang, Huijuan Su, Bo Zhang
Summary: The study shows that adding different proportions of N-2 and Ar to CO2 gas affects the discharge characteristics and reaction performance, with appropriate additions promoting the conversion of CO2. However, when the N-2 and Ar content exceeds 50%, the amount of CO2 converted decreases.
WASTE DISPOSAL & SUSTAINABLE ENERGY
(2021)
Article
Engineering, Environmental
Baowei Wang, Xiaoyan Li, Xiaoxi Wang, Bo Zhang
Summary: The study indicates that using filled dielectric materials can significantly improve the conversion rate and energy efficiency of CO2 decomposition technology, with the filled MgO reactor showing the highest performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Xiaoyu Hu, Baowei Wang
Summary: The degradation of pefloxacin solution using DBD plasma was studied in this paper, and factors affecting the degradation rate were identified. The role of O-3 and H2O2 in the degradation process was investigated, and the primary active species was determined to be center dot OH. Intermediate products generated during degradation were analyzed, and possible degradation mechanisms and pathways were proposed based on the results.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)