Article
Engineering, Environmental
D. Flagiello, A. Erto, A. Lancia, F. Di Natale
Summary: This study investigates the use of a Wet-Oxidative Scrubber (WOS) for controlling both SO2 and NOx emissions from exhaust flue-gases. The results show that the WOS can simultaneously remove SO2 and NOx, and the presence of SO2 in the flue-gas enhances the oxidative mechanisms, leading to improved NOx removal efficiency. A predictive model based on experimental dosages of NaClO2 is developed to predict the performance of the WOS unit, including de-SOx and de-NOx efficiencies as well as wash water pH.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Energy & Fuels
Chuanqiang Zhu, Jinbo Ru, Shiqiu Gao, Changming Li
Summary: The SDNS technology, which involves direct injection of DNS and DSS agents, can effectively remove NOx and SO2 from flue gas. It offers high efficiency, stable operation, and is simpler and more cost-effective compared to traditional tail-end purification processes.
Article
Environmental Sciences
Xi-Jun Xu, Yi-Ning Wu, Qing-Yang Xiao, Peng Xie, Nan-Qi Ren, Yi-Xing Yuan, Duu-Jong Lee, Chuan Chen
Summary: Chemical absorption-biological reduction (CABR) process is an attractive method for NOx removal, and Fe(II) EDTA regeneration is crucial for sustaining high NOx removal efficiency. In this study, a sustainable and eco-friendly sulfur cycling-mediated Fe(II)EDTA regeneration method was incorporated into an integrated biological flue gas desulfurization (FGD)-CABR system. Complete SO2 removal was achieved at all tested scenarios with sulfide, thiosulfate, and S-0 accumulation in the solution. The total removal efficiency of NOx in the system was close to 100%, with different proportions removed in the spray scrubber and EGSB reactor, accompanied by no N2O emission. Microbial community analysis revealed the cooperation of denitrifying and iron-reducing bacteria in the EGSB reactor, as well as sulfide-oxidizing and nitrate-reducing bacteria in the spray scrubber contributed to efficient NOx removal in flue gas.
ENVIRONMENTAL RESEARCH
(2022)
Review
Environmental Sciences
Peng Yuan, Haofei Ma, Boxiong Shen, Zhiyong Ji
Summary: This review article provides insights into the removal of NO, SO2 and elemental mercury from flue gas using advanced oxidation processes (AOPs). It discusses different reaction systems, evaluates potential purification methods, and suggests future research directions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Metallurgy & Metallurgical Engineering
Jia Li-juan, Yu Qian, Li Zi-zhen, Wang Fang, Gao Ji-yun, Liu Chen-hui, Liu Tian-cheng, Song Xin, Ning Ping
Summary: This paper explores the use of mud-phosphorous slurry for ozone production in desulfurization and denitrification, analyzing the impact of reaction temperature, oxygen content, and solid-liquid ratio on ozone generation. The optimum conditions yielded the largest ozone amount of 573.8 mg/m(3) with removal rates of 99.5% for SO2 and 99% for NOx. It also proposes a reaction mechanism for desulfurization and denitrification products.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Environmental Sciences
Fan Zhang, Asif Hussain, Jingyi Ma, Xi Wang, Xing Wang, Yuanyuan Guo, Shihong Xu, Dengxin Li
Summary: The ozone-wet absorption process is an efficient and low-pollution approach for simultaneous flue gas desulfurization and denitrification. The main issue with this process is the relatively low mass transfer of ozone in the liquid phase. This study combines cavitation with the ozone-wet oxidation process to improve ozone mass transfer and achieve rapid oxidation of NOX and SO2 from flue gases.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Chemical
Jakob Johansson, Anette Heijnesson Hulten, Fredrik Normann, Klas Andersson
Summary: The study investigates the coabsorption of NO2 and SO2 from flue gases, along with the enhanced oxidation of NO by ClO2, across different scales and origins of flue gases. The results suggest that ClO2 is highly selective towards NO oxidation, especially at temperatures between 70-155 degrees C. However, simulations underestimated the level of NO2 absorption at the smallest scale and did not account for the rapid and complete oxidation of S(IV) in the presence of NO2.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Multidisciplinary Sciences
Shiqing Wang, Shisen Xu, Shiwang Gao, Ping Xiao, Minhua Jiang, He Zhao, Bin Huang, Lianbo Liu, Hongwei Niu, Jinyi Wang, Dongfang Guo
Summary: Under cold temperatures, the presence of oxygen enhances the adsorption capacity of NO on activated carbon. The adsorption capacity of SO2 is also significantly increased at low temperatures. A novel low-temperature adsorption (LAS) process is developed for simultaneous removal of SO2 and NOx from flue gas.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Yu Liu, Bin Li, Xiaoli Lei, Shuai Liu, Hengxi Zhu, Ermao Ding, Ping Ning
Summary: This study developed a novel method for simultaneous removal of NOx and SO2 from coal-fired flue gas by coupling yellow phosphorus emulsion with red mud. The removal efficiencies of NOx and SO2 were as high as 97.9% and 100%, respectively, under optimized conditions. Characterization of samples before and after the reaction revealed gypsum as the main product after desulfurization and denitrification, and various models for adsorption kinetics were established.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Ke Zhao, Xin Sun, Chi Wang, Xin Song, Fei Wang, Kai Li, Ping Ning
Summary: This paper reviews the simultaneous removal of SO2, NOx, and Hg-0 from industrial exhaust flue gas by catalysts, discussing catalyst types, research progress, and the effects of flue gas components on removal efficiency.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Jongsik Kim, Dong Ho Kim, Jinseon Park, Keunhong Jeong, Heon Phil Ha
Summary: This study investigates the catalytic significance of SOA2- species in NH3-assisted selective NOx reduction and ammonium sulfate/absorbent poison degradation. The results show that mono-dentate and bi-dentate SOA2- species play crucial roles in directing the reaction pathways and improving the surface redox trait, thus promoting the low-temperature SCR performance and stability under different feed gas streams.
Review
Engineering, Environmental
Rong Chen, Tongsheng Zhang, Yiqun Guo, Jiawei Wang, Jiangxiong Wei, Qijun Yu
Summary: The paper provides a timely review of simultaneous de-SO2 and de-NOx methods, categorizing them into four pathways and systematically reviewing the removal process, basic mechanism, and kinetics of each pathway. The main challenges and potential breakthroughs in developing novel methods are critically discussed, providing a roadmap for prospective research activities. This review offers deeper insights into understanding the mechanisms of de-SO2 and de-NOx, aiming to develop innovative simultaneous removal methods or enhance the efficiency of available abatement methods.
CHEMICAL ENGINEERING JOURNAL
(2021)
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
Engineering, Environmental
Chang Wang, Pengjian Lv, Yulei Ma, Jian Mei, Shijian Yang
Summary: FeMoSx/TiO2 was investigated as a regenerable sorbent for simultaneous adsorption of Hg-0 and Hg(II) from coal-fired flue gas. It exhibited excellent capacity for Hg-0 adsorption and moderate capacity for Hg(II) adsorption.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Nurlan Dosmukhamedov, Valery Kaplan
Summary: The experiment indicates that the use of carbonate melt for scrubbing sulfur dioxide is an effective and economical method for limiting sulfur and nitrogen oxide emissions from both coal-fired power stations and non-ferrous metallurgical processing plants.
INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION
(2022)
Article
Engineering, Electrical & Electronic
Arkadiusz Swierczok, Maria Jedrusik
JOURNAL OF ELECTROSTATICS
(2018)
Article
Chemistry, Multidisciplinary
Maria Jedrusik, Dariusz Luszkiewicz, Karel Borovec, Lukas Pilar
PRZEMYSL CHEMICZNY
(2018)
Article
Energy & Fuels
Maria Jedrusik, Mieczyslaw A. Gostomczyk, Arkadiusz Swierczok, Dariusz Luszkiewicz, Mariola Kobylanska
Article
Environmental Sciences
Mateusz Wnukowski, Wlodzimierz Kordylewski, Dariusz Luszkiewicz, Anna Lesniewicz, Miroslaw Ociepa, Jozef Michalski
WASTE AND BIOMASS VALORIZATION
(2020)
Article
Engineering, Electrical & Electronic
Arkadiusz Swierczok, Maria Jedrusik, Dariusz Luszkiewicz
JOURNAL OF ELECTROSTATICS
(2020)
Article
Energy & Fuels
Zbigniew Rogala, Michal Stanclik, Dariusz Luszkiewicz, Ziemowit Malecha
Summary: Natural gas is a major energy source, accounting for about 20% of the world's energy production. It plays a key role in reducing CO2 emissions by stabilizing renewable energy sources. However, as a fossil fuel, its use should be limited. Biogas is a potential candidate for stabilizing renewable energy and reducing dependence on fossil fuels. This study focuses on the potential of biogas production in Poland, showing that most of the potential comes from sources with lower capacities, requiring downsizing of current technologies for full utilization.
