Article
Engineering, Environmental
Keke Kang, Xiaojiang Yao, Jun Cao, Zhe Li, Jing Rong, Wen Luo, Wanxia Zhao, Yang Chen
Summary: The study demonstrates that CuO modification can significantly enhance the activity and resistance to alkali metals of CeTiOx catalyst by protecting the reduction ability and weakening the adsorption strength of NOx.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Wanxia Zhao, Jing Rong, Wen Luo, Lulu Long, Xiaojiang Yao
Summary: The CS-HT catalyst showed better denitration activity and anti-K poisoning performance compared to the CS-CP catalyst, which was attributed to the good distribution of Sn4+, excellent redox performance, and surface acidity in the former. The enhancement of the anti-K poisoning ability of the CS-HT catalyst was related to the easier combination of Sn-O bonds with introduced K, which protected the Ce-O active sites.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yang Zheng, Yangyang Guo, Wenpo Shan, Zhihua Lian, Tingyu Zhu
Summary: This study investigates the possibility of using CuO to enhance the resistance of V/Ti catalysts against poisoning effects of Ca species from cement flue gas. The activity tests show that the Ca CuV/Ti catalyst maintains good performance with an NO conversion above 80% between 260-330°C, while the highest NO conversion of Ca V/Ti in the same temperature range is only 52.4%. Characterization results indicate that CaO is more easily adsorbed on CuO, thus retaining the V active sites. In situ DRIFTS results show that CaO poisoning has a smaller impact on the adsorption rate and reactivity of NHx over Ca CuV/Ti compared to Ca V/Ti, and even promotes the formation of active nitrate species on CuV/Ti, which is the main reason for its strong Ca resistance.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Engineering, Environmental
Keke Kang, Xiaojiang Yao, Yike Huang, Jun Cao, Jing Rong, Wanxia Zhao, Wen Luo, Yang Chen
Summary: A novel K-resistant Fe3+ and Zr4+ co-doped CeTiOx catalyst was prepared for NH3-SCR of NOx, showing superior K-resistance and improved activity after K-poisoning. The proposed anti-K poisoning mechanism involves sacrificial Fe and Zr forming protective species, as well as additional reducibility and surface acidity enhancing distribution.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Applied
Chaopeng Duan, Ruitang Guo, Yuanzhen Liu, Guilin Wu, Yufang Miao, Jingwen Gu, Weiguo Pan
Summary: The study found that the addition of Holmium (Ho) on CeTi catalyst can significantly enhance its tolerance to alkali metal K in exhaust gas. The main reason for the improvement of K resistance is the enhanced surface acidity and redox capability, higher concentration of Ce3+ species, and surface chemisorbed oxygen.
JOURNAL OF RARE EARTHS
(2022)
Article
Energy & Fuels
Aidong Fan, Yue Jing, Jiaxiu Guo, Xueke Shi, Shandong Yuan, Jianjun Li
Summary: A series of Mn-doped perovskite La-Mn oxides were prepared and evaluated for NH3-SCR activity, showing excellent performance in low-temperature SCR and resistance to SO2 and H2O. Mn doping altered the redox properties of La-Mn oxides, but the presence of SO2 and H2O weakened the redox properties and acidity of the catalyst. Mn doping enhanced NH3 adsorption and accelerated the decomposition of ammonium sulfate, improving SO2 resistance.
Article
Chemistry, Physical
De-yu Guo, Rui-tang Guo, Chao-peng Duan, Yuan-zhen Liu, Gui-lin Wu, Yang Qin, Wei-guo Pan
Summary: The modification of Cu-SSZ-13 catalysts with Ce enhances resistance to K deactivation and improves SCR performance, mainly due to the synergistic effect between Ce and Cu.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Physical
Shuqi Zhao, Jian-Wen Shi, Cihang Niu, Baorui Wang, Chi He, Wei Liu, Lei Xiao, Dandan Ma, Hongkang Wang, Yonghong Cheng
Summary: The Ce-Mn/FeVO4 catalyst achieves high-efficiency de-NOx through the synergistic effect between Ce and Mn, even reaching high de-NOx efficiency at low temperatures.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Keke Kang, Wanxia Zhao, Jing Rong, Wen Luo, Lulu Long, Yang Chen, Xiaojiang Yao
Summary: In this study, a catalyst with superior catalytic performance and alkali resistance was prepared by loading FeZrCeTiOx on a TiO2 nanotube support and treating it with H2SO4.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Jun Cao, Zhuquan Lu, Liumei Teng, Xu Qiao, Weizao Liu, Hongli Wu, Lijun Jiang, Qirong Wu, Qingcai Liu
Summary: This study investigated the poisoning effects of K2O and PbO on the NH3-SCR performance of TiO2-CeO2 catalyst, and found a stronger toxicity when both were introduced simultaneously, hindering electron transfer and surface acidity. Furthermore, the combination of K and Pb reduced the activation performance of NOx species and did not alter the Langmuir-Hinshelwood mechanism of the catalyst.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yi Xing, Zefeng Guo, Wei Su, Hui Zhang, Jing Chen, Jinglei Tian, Jichao Yuan, Di Wu
Summary: Selective catalytic reduction technology is widely used for NOx control, but the preparation process of catalysts is complicated and costly. In this study, a novel low-cost catalyst was prepared by treating vanadium-bearing steel slag with calcination modification and sulfuric acid modification. The results showed that sulfuric acid modification greatly improved the denitration activity of the catalyst, and calcination before modification further enhanced its activity. The catalyst exhibited high NOx removal efficiency and demonstrated good water and sulfur resistance. The study provides a new idea for reducing catalyst cost and promoting cleaner production.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Yang Zheng, Yangyang Guo, Jian Wang, Lei Luo, Tingyu Zhu
Summary: The poisoning effect of Ca limits the further application of vanadium-based catalysts in high-calcium content flue gas. CaO doping deteriorates the surface acid sites and oxidation/reduction properties of V2O5-WO3/TiO2 (VWT) and V2O5/TiO2 (VT) catalysts, leading to a decrease in NO conversion during NH3-SCR, with NH3 oxidation becoming more competitive at higher temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Environmental Sciences
Tingting Que, Kaijiao Duan, Sivasankar Koppala, Yanfang Zhang, Yungang He, Lijuan Jia, Tiancheng Liu
Summary: In this study, a novel co-precipitation coupled solvothermal procedure was used to prepare a SmMnOx catalyst with a reed flower-like structure, which exhibited excellent performance in the selective catalytic reduction of NOx by NH3 at low temperatures. The unique morphology of the catalyst, characterized by the largest surface area, strong synergistic reaction of Sm and Mn, abundant surface oxygen species and active sites, and enhanced redox ability, contributed to its superior catalytic performance. Moreover, the amorphous reed flower-like structure promoted short-range ordered interaction between active components and inhibited the formation of sulfate species.
ENVIRONMENTAL RESEARCH
(2022)
Review
Chemistry, Physical
Yiqing Zeng, Kok-Giap Haw, Yanan Wang, Shule Zhang, Zhigang Wang, Qin Zhong, Sibudjing Kawi
Summary: NH3-SCR is an important method to reduce NOx emissions, with CeO2-TiO2 catalysts gaining attention for their excellent performance. This review summarizes recent studies on CeO2-TiO2 catalysts, focusing on the impact of modification strategies on catalytic performance.
Article
Energy & Fuels
Xiaoxiang Wang, Heyao Ma, Yun Shi, Qiaoli Wang, Peilun Xu, Wei Li, Sujing Li
Summary: Acid regeneration effectively removed potassium deposits on the surface of the K-CuNbTi catalyst, resulting in excellent catalytic performance at high temperatures. The increase in acidic sites and generation of Bronsted acid sites were crucial factors contributing to the improved catalytic activity of the regenerated catalyst.
Article
Engineering, Environmental
Shun-Shun Chen, Xu-Xiu Chen, Tian-Yu Yang, Li Chen, Zheng Guo, Xing-Jiu Huang
Summary: A temperature-modulated sensing strategy was proposed to identify and determine BTEX compounds. Highly effective identification of BTEX was achieved using linear discrimination and convolutional neural network analyses. Additionally, quantitative analysis of concentration was accomplished by establishing the relationship between concentration and response.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Myungkyung Noh, Jeong Yeon Sim, Jisung Kim, Jee Hwan Ahn, Hye-Young Min, Jong-Uk Lee, Jong-Sook Park, Ji Yun Jeong, Jae Young Lee, Shin Yup Lee, Hyo-Jong Lee, Choon-Sik Park, Ho-Young Lee
Summary: This study reveals that chronic exposure to PM induces chronic inflammation and development of COPD by dysregulating NAD+ metabolism and subsequent SIRT1 deficiency in pulmonary macrophages. Activation of SIRT1 by resveratrol effectively mitigates PM-induced inflammation and COPD development. Targeting metabolic and epigenetic reprogramming in macrophages induced by PM is a promising strategy for COPD treatment.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yu Liu, Linlin Qin, Yiming Qin, Tong Yang, Haoran Lu, Yulong Liu, Qiqi Zhang, Wenyan Liang
Summary: Co/NC/PAC electrode was prepared by compounding ZIF-67 with powder-activated carbon for the electrocatalytic treatment of nitrogen-containing heterocyclic compounds. The degradation efficiency of the four compounds reached 90.2-93.7% under optimal conditions, and the degradation order was pyridazine < pyrimidine < pyrazine < pyridine.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Julien Couturier, Pierre Tamba Oulare, Blanche Collin, Claire Lallemand, Isabelle Kieffer, Julien Longerey, Perrine Chaurand, Jerome Rose, Daniel Borschneck, Bernard Angeletti, Steven Criquet, Renaud Podor, Hamed Pourkhorsandi, Guilhem Arrachart, Clement Levard
Summary: This study analyzes the properties of bauxite residue samples and explores the influence of bauxite ore origin, storage conditions, and storage time. The results show that the speciation of yttrium is related to the origin of bauxite ore, while no significant variation was observed with storage conditions or aging of the residues.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Sakthinarenderan Saikumar, Ravi Mani, Mirunalini Ganesan, Inbakandan Dhinakarasamy, Thavamani Palanisami, Dharani Gopal
Summary: Microplastic contamination in marine ecosystems poses a growing concern due to its trophic transfer and negative effects on marine organisms. This study investigates the transfer and impacts of polystyrene microplastics in an estuarine food chain. The results show that microplastics can be transferred through the food chain, although the transfer rates are low. The exposed organisms exhibit stress responses, suggesting the potential risk of microplastics reaching humans through the food chain.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Review
Engineering, Environmental
Yan-Jiao Li, Ying Yuan, Wen-Bing Tan, Bei-Dou Xi, Hui Wang, Kun-Long Hui, Jia-Bao Chen, Yi-Fan Zhang, Lian-Feng Wang, Ren-Fei Li
Summary: This review investigated and analyzed the distribution, composition, and abundance of heavy metals and antibiotic resistance genes (ARGs) in landfill. The results showed that heavy metals have lasting effects on ARGs, and complexes of heavy metals and organic matter are common in landfill. This study provides a new basis to better understand the horizontal gene transfer (HGT) of ARGs in landfill.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Jessy Joseph, Ari Vaisanen, Ajay B. Patil, Manu Lahtinen
Summary: Efficient and environmentally friendly porous hybrid adsorbent beads have been developed for the removal of arsenic from drinking water. The structural tuning of the adsorbents has been shown to have a significant impact on their adsorption performance, with high crystallinity leading to increased adsorption capacity and selectivity towards As5+.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yangyang Liu, Minhua Xiao, Kaiqin Huang, Juntao Cui, Hongli Liu, Yingxin Yu, Shengtao Ma, Xihong Liu, Meiqing Lin
Summary: This study measured the levels of phthalate metabolites in breast milk collected from mothers in southern China. The results showed that phthalates are still prevalent in the region, and breastfeeding contributes to phthalate intake in infants. However, the levels detected do not pose significant health risks to infants based on dietary exposure. The increasing exposure to certain phthalates calls for further research into their sources and potential risks.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhiqiang Wu, Jianxing Sun, Liting Xu, Hongbo Zhou, Haina Cheng, Zhu Chen, Yuguang Wang, Jichao Yang
Summary: Ocean depth affects microbial diversity, composition, and co-occurrence patterns of microplastic microbial communities. Deterministic processes dominate the assembly of mesopelagic plastisphere microbial communities, while stochastic processes shape the assembly of bathypelagic microbial communities. The relationships between microorganisms in the mesopelagic layer are more complex and stable, with Proteobacteria and Actinobacteriota playing important roles.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Tingting Xiao, Renjie Chen, Chen Cai, Shijie Yuan, Xiaohu Dai, Bin Dong, Zuxin Xu
Summary: Based on the efficiency of catalytic ozonation techniques in enhancing sludge dewaterability, this study investigated its effectiveness in simultaneous reduction of antibiotics and antibiotic resistance genes. The results showed that catalytic ozonation conditioning changed the distribution of antibiotics and achieved high degradation rates. It also significantly reduced the abundance of ARGs, inhibited horizontal gene transfer, and decreased the signal transduction of typical ARGs host bacteria.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Yang Deng, Xiaohong Guan
Summary: This article discusses two different development approaches for ferrate(VI) technology in water treatment, arguing that process integration is a promising method that can drive technological innovation and revolution in water treatment, achieving higher treatment efficiency, reduced costs and energy consumption, and a smaller physical footprint.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhe Zhang, Lu Zhang, Zhihao Huang, Yuxin Xu, Qingqing Zhao, Hongju Wang, Meiqing Shi, Xiangnan Li, Kai Jiang, Dapeng Wu
Summary: In this study, a floating catalytic foam was designed and prepared to enhance the mass transfer in immobilized photocatalysts for wastewater treatment. The floating catalytic foam could float on the water surface and establish a temperature gradient, effectively promoting the diffusion and adsorption of target molecules during the photocatalytic process.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Muhammad Nafees, Adiba Khan Sehrish, Sarah Owdah Alomrani, Linlin Qiu, Aasim Saeed, Shoaib Ahmad, Shafaqat Ali, Hongyan Guo
Summary: The accumulation of cadmium and antibiotics in edible plants and fertile soil is a worldwide problem. This study investigated the potential of zinc oxide nanoparticles to alleviate the toxicity of both cadmium and antibiotics and promote spinach growth.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Lurui Wan, Kai Wang, Yuan Chen, Zhiyong Xu, Wenbo Zhao
Summary: In this study, a low viscosity and high thermal stability SO2 absorbent with dual interacting sites was successfully synthesized. The absorbent showed the highest absorption enthalpy change and entropy change values among reported SO2 absorbents, and exhibited lower viscosity and comparable thermal stability to ILs.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Engineering, Environmental
Zhengwei Zhou, Guojie Ye, Yang Zong, Zhenyu Zhao, Deli Wu
Summary: This study utilized Mo powder and STPP to enhance the performance of the sodium percarbonate system in pollutant degradation. The presence of Mo and STPP resulted in a higher degradation rate of the model pollutant SMX, with low oxidant consumption. The system generated multiple active species through a series of chain reactions at different pH values, exhibiting excellent performance towards electron-rich pollutants. Furthermore, Mo demonstrated excellent stability and reusability.
JOURNAL OF HAZARDOUS MATERIALS
(2024)