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
Environmental Sciences
Hui Wang, Pu Zhang
Summary: The study found that both wet and semi-dry FGD systems had high removal efficiencies for PM, heavy metals, and dioxins, with semi-dry FGD showing better removal efficiency for dioxins compared to wet FGD.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Zhongyang Zhao, Yongxin Zhang, Wenchao Gao, Jakov Baleta, Chang Liu, Wenjun Li, Weiguo Weng, Haobo Dai, Chenghang Zheng, Xiang Gao
Summary: The importance of wet flue gas desulfurization systems in treating high SO2 concentration flue gas is discussed in this study. The influencing factors of SO2 absorption process in tray scrubbers are investigated, indicating that using tray scrubbers is more suitable for desulfurizing high SO2 concentration flue gas compared to adjusting pH values.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
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)
Review
Engineering, Environmental
Che-Jung Hsu, John D. Atkinson, Adrienne Chung, Hsing-Cheng Hsi
Summary: Studies have shown that Hg-0 re-emission is influenced by various factors and can be restricted through the addition of inhibitors. This review summarizes the mechanisms of Hg-0 re-emission, updates misconceptions, and reviews the application of inhibitors.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Jiacheng Yang, Tianbo Tang, Yu Jiang, Georgios Karavalakis, Thomas D. Durbin, J. Wayne Miller, David R. Cocker, Kent C. Johnson
Summary: This study assessed the real-world gaseous and particulate emissions for a wet scrubber retrofit to an existing container ocean-going vessel. The results showed that while the scrubber had a high removal efficiency of sulfur dioxide emissions, its removal efficiency for particulate matter emissions was low.
Article
Energy & Fuels
Li Bing, Wang Hongliang
Summary: The study found that the main type of mercury emitted in coal-fired flue gas is gaseous mercury, and the mercury emissions from all units meet the standard requirements. SCR denitration facilities have a significant impact on mercury type, promoting the oxidation of elemental mercury into oxidized mercury that can be easily removed downstream. Particulate mercury and oxidized mercury are synergistically removed in dust removal and wet desulfurization facilities, respectively.
Article
Engineering, Chemical
Tayebeh Darbandi, Mikael Risberg, Lars Westerlund
Summary: The wet-scrubber purification system has been experimentally shown to improve PM collection efficiency, increase heat recovery, and reduce heat losses in small-scale biomass boilers. During the 8.5-month testing period, no decrease in absorption solution ability was observed.
CHEMICAL ENGINEERING & TECHNOLOGY
(2021)
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
Energy & Fuels
Francesco Di Natale, Claudia Carotenuto, Arianna Parisi, Domenico Flagiello, Amedeo Lancia
Summary: This study presents experimental and modeling results on the removal of SO2 and combustion particles in a pilot-scale wet electrostatic scrubber. The experiments showed that increasing the spray charge density improved the absorption efficiency of SO2, and further enhancement was achieved with corona pre-charging. Similarly, increasing the spray charge density and corona pre-charging potential improved the overall particle capture efficiency. The results accurately described the absorption of SO2 in certain configurations and the particle capture in another configuration, but further research is needed for other conditions.
Article
Engineering, Chemical
Mikael Patrik Rimvall, Jens Abildskov
Summary: Simulations and designs are conducted on conventional and periodic SO2 absorption using salt water as solvent for exhaust gases. The advantages of periodic operation, such as shorter towers and less solvent required, are applicable to absorption processes as well.
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)
Review
Engineering, Environmental
Wei Zheng, Hailong Li, Zequn Yang, Jianping Yang, Wenqi Qu, Fanyue Meng, Yong Feng, Zhengyong Xu, Xueyi Guo
Summary: This review highlights the global concerns over mercury contamination and the advantages of mineral chalcogenides in immobilizing gaseous elemental mercury. It provides an overview of research progress and application conditions of mineral chalcogenides for Hg-0 removal, as well as comparisons of their adsorption performance. Comprehensive discussions on influential factors and mechanisms for Hg-0 removal by different mineral chalcogenides are also presented to guide future research directions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Feng Ju, Cong Wu, Hui Luan, Zhihe Tang, Helin Pan, Hui Pan, Guangli Xiu, Hao Ling
Summary: This study showed that wet flue gas desulfurization leads to a large amount of water vapor in the flue gas, indirectly causing the emissions of salt pollutants. The research also found that a significant amount of ammonium sulfite and ammonium sulfate existed in the condensate water of the flue gas, releasing NH3, SO2, and H2O during decomposition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
J. Xu, J. Bao, H. Liu, J. Tang, G. Xie, L. Sun
Summary: Experiments conducted in a simulated wet flue gas desulfurization system showed that sulfite and slurry temperature are key factors affecting mercury migration and re-emission. pH value and atmosphere also play a role in influencing mercury behavior in the system.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Energy & Fuels
Silvio Farr, Barna Heidel, Melanie Hilber, Guenter Schefiknecht
Article
Energy & Fuels
Barna Heidel, Tobias Rogge, Guenter Scheffknecht
Article
Energy & Fuels
Barna Heidel, Melanie Hilber, Gunter Scheffknecht
Article
Engineering, Environmental
Manuela Rallo, Barna Heidel, Kevin Brechtel, M. Mercedes Maroto-Valer
CHEMICAL ENGINEERING JOURNAL
(2012)
Article
Engineering, Environmental
T. Schwaemmle, F. Bertsche, A. Hartung, J. Brandenstein, B. Heidel, G. Scheffknecht
CHEMICAL ENGINEERING JOURNAL
(2013)
Article
Engineering, Chemical
Guenter Scheffknecht, Silvio Farr, Barna Heidel, Tobias Schwaemmle, Kevin Brechtel
CHEMIE INGENIEUR TECHNIK
(2012)
Article
Energy & Fuels
Tobias Schwaemmle, Barna Heidel, Kevin Brechtel, Guenter Scheffknecht
Article
Green & Sustainable Science & Technology
Ida Masoomi, Barna Heidel, Marc Oliver Schmid, Gunter Scheffknecht
Proceedings Paper
Chemistry, Applied
Oliver Seyboth, Simone Zimmermann, Barna Heidel, Guenter Scheffknecht
12TH INTERNATIONAL CONFERENCE ON GREENHOUSE GAS CONTROL TECHNOLOGIES, GHGT-12
(2014)