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, Chemical
Anlin Liu, Liwang Wang, Jiwei Wu, Lingyu Xiao, Xia Jiang, Lina Wang, Liang Ma, Hualin Wang
Summary: A gas cyclone-liquid jet absorption separator (GLAS) combined with NaClO solution was developed to remove SO2 and NO emitted from marine ships. The results showed that GLAS had high efficiency in pollutant removal, making it a promising technology for marine ships.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
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)
Review
Energy & Fuels
Yan Wang, Zhihua Wang, Yangxian Liu
Summary: The emissions of pollutants from coal-fired flue gas pose hazards to human health and ecosystems, leading to the development of technologies for simultaneous removal of multiple pollutants. Green oxidation absorption technology shows promise by utilizing existing equipment and offering a clean treatment process. Each technology has its own strengths and weaknesses, and the synergic use of multiple technologies may be a promising strategy to address their limitations.
Article
Chemistry, Applied
Yan Wang, Chi Ma, Zhifei Dou, Yangxian Liu
Summary: A new technique utilizing porous carbon/heat-coactivated persulfate system is proposed for simultaneous removal of SO2, NO, and Hg-0. Experimental and theoretical analysis show that the developed system exhibits higher pollutants removal efficiency due to the synergism between porous carbon and heat. Both SO4- . and .OH play important roles in the removal process of NO and Hg-0, with .OH being more important for NO removal and SO4-. being more important for Hg-0 removal. The removal processes of NO and Hg-0 follow pseudo-first-order rapid reaction kinetics and are controlled by mass transfer.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Applied
Osmin Aviles-Garcia, Jaime Espino-Valencia, Arisbeht Mendoza-Zepeda, Kingsley Donkor, Sharon Brewer, Rubi Romero, Reyna Natividad
Summary: In this study, the degradation of beta-blocker metoprolol was achieved through photocatalysis and photo-Fenton catalyzed by doped TiO2. The addition of Cu/TiO2 showed the highest degradation and mineralization extent, while doping also reduced the energy band gap of TiO2.
Article
Energy & Fuels
Kunpeng Li, Hui Hu, Maohong Fan, Mi Zhang, Zhongming Chen, Ruibin Lv, Hao Huang
Summary: An advanced oxidation process (AOPs) using Fe(II) activated peracetic acid (PAA) was investigated for the simultaneous removal of SO2 and NO from flue gas. The maximum removal efficiencies obtained were 92.3% for NO and 99.5% for SO2 under optimal conditions. Reactive oxidizing species and organic radicals were generated in the Fe(II)/PAA system, with organic radicals confirmed to be the major factors affecting NO oxidation. The main products of SO2 and NO removal were identified as SO42- and NO3-.
Article
Engineering, Environmental
Yangxian Liu, Shuo Shi, Zhihua Wang
Summary: In this study, a novel technique for simultaneous removal of NO and SO2 was proposed using a double metal ions-double oxidants coactivation system. The results showed that this system achieved higher free radical yield and pollutant removal efficiency compared to other systems. The removal efficiency of NO increased with higher concentrations of Oxone and Cu2+, but decreased with increasing inlet contents of NO and SO2. SO2 was completely removed under all studied process parameters.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Mingqiang Deng, Zhengguo Xiao, Dengxin Li, Qiaoling Zhu, Qin Chen, Sicheng Wu
Summary: Micro-nanobubbles were used in a Wet Direct Recycling Micro-nanobubble Flue Gas Multi-pollutants Removal System (WDRMRS) for the simultaneous removal of NO, SO2 and Hg-0. The system utilized a micro-nanobubble generator to create a gas-liquid dispersion system, which recycled the absorbent and flue gas to achieve cyclic absorption of pollutants. The study found that various parameters affected the removal efficiency of NO, while the removal efficiency of SO2 was not significantly affected. Only the initial solution pH and NO concentration affected the removal efficiency of Hg-0. The system successfully removed the pollutants and generated easily recyclable products, reducing the cost of waste gas treatment.
ENVIRONMENTAL TECHNOLOGY
(2023)
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
Engineering, Chemical
Yuanqing Wang, Guichen Zhang, Juan Su
Summary: The study investigated denitration and desulfurization using ozone oxidation combined with seawater absorbent, achieving high oxidation efficiency and analyzing influencing factors along with treatment methods.
Article
Energy & Fuels
Yifei Long, Zhong He, Shinian Liu, Yongyan Zhou, Wenjie Liu, Yajie Yin, Xin Tong, Xiaoyi Li, Kang Hu, Jiangjun Hu
Summary: The study investigated the effects of rare-earth elements on Ce-Ti catalysts for the removal of Hg-0 and NO in wastewater treatment. The results showed that rare-earth elements improved the catalyst's activity and SO2 tolerance, and facilitated the formation of CeO2 amorphous structure.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Chemistry, Multidisciplinary
Junghwan Kim, Juwon Lee, Hyungtae Cho, Yuchan Ahn
Summary: This paper compares the environmentally-benign process of carbonate melt flue gas desulfurization (CMFGD) with the conventional process for removing SO2 from flue gas using life cycle assessment and heat integration methodology. The results show that CMFGD process has a lower environmental impact and introducing a heat exchanger network (HEN) can further reduce environmental and economic impacts. This suggests that CMFGD process can replace conventional methods and have significant environmental benefits.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Engineering, Environmental
Yunus Ahmed, Jiexi Zhong, Zhiguo Yuan, Jianhua Guo
Summary: This study demonstrated the feasibility of a modified photo-Fenton process in effectively removing antibiotic resistant bacteria, antibiotic resistance genes, and micropollutants simultaneously, highlighting its potential as a one-stop solution for mitigating both chemical and biological hazards.
Article
Energy & Fuels
Fang Wang, Hui Li, Jiyun Gao, Chenhui Liu, Lijuan Jia, Jiayu Feng, Ping Ning
Summary: In this study, a modified solid waste calcium carbide slag (KCS) was used to simultaneously remove NO and SO2 under low temperature conditions. The addition of SO2 promoted the formation of oxygen-containing functional groups, enhancing the removal efficiency. This research proposes a strategy for waste utilization, achieving simultaneous removal of NO and SO2.
Review
Engineering, Environmental
Dongjing Liu, Chaoen Li, Jiang Wu, Yangxian Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Wei Yang, Hui Chen, Xuan Han, Shuai Ding, Ye Shan, Yangxian Liu
JOURNAL OF HAZARDOUS MATERIALS
(2020)
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
Energy & Fuels
Shuo Shi, Friday O. Ochedi, Shuaibo Cui, Yangxian Liu
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)
Review
Engineering, Chemical
Ye Shan, Yangxian Liu, Ying Li, Wei Yang
SEPARATION AND PURIFICATION TECHNOLOGY
(2020)
Article
Chemistry, Multidisciplinary
Ovaid Mehmood, Sarah Farrukh, Arshad Hussain, Ayesha Rehman, Yangxian Liu, Sajid Butt, Erum Pervaiz
