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
Energy & Fuels
John H. Jacobs, Nancy Chou, Kevin L. Lesage, Ye Xiao, Josephine M. Hill, Robert A. Marriott
Summary: Activated carbons have been found to possess good selective adsorption capability for removing sulfur dioxide from flue gas, especially in the presence of water. The activated carbons prepared with KOH and NaOH showcased the highest SO2 adsorption capacity under wet conditions. Additionally, the adsorption performance of all activated carbons remained unchanged after multicomponent adsorption of wet SO2.
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
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
Yuling Ma, Airong Li, Cheng Wang
Summary: Metal-organic frameworks (MOFs) are promising materials for gas adsorption and separation due to their high specific surface area, adjustable pore structure, and functionalized pore environment. By introducing different monocarboxylic acids during the synthesis, a series of defective UiO-66 samples were prepared with high specific surface area and good thermal stability. Among them, UiO-66-cyanoacetic acid showed the highest breakthrough time for SO2 in the desulfurization experiment of simulated flue gas.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Zhonghui Zhang, Bolun Yang, Heping Ma
Summary: The aliphatic amine decorating strategy successfully improved the SO2 capture performance of MOF by transferring SO2 adsorption sites from Cr to N atom, enhancing SO2 absorption capacity under low SO2 partial pressure.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Jie Zhu, Peng Zhao, Sudong Yang, Lin Chen, Qian Zhang, Qiang Yan
Summary: The study developed a system model for continuous SO2 absorption and desorption processes using amine-based flue gas desulfurization, revealing the dynamic characteristics and parameter evolution mechanism. Results show good agreement between simulation and experimental data, indicating that reducing reboiler duty and adjusting solvent flow can maintain normal desulfurization operation.
Article
Engineering, Chemical
Zhonghui Zhang, Bolun Yang, Yue Wu, Wenxiang Zhang, Heping Ma
Summary: The efficient capture of SO2 after the combustion of fossil fuels is challenging due to the low SO2 concentration and coexistence of other gases in the flue gas. Post-modification of Zr-O clusters in Zr-MOF with EDTA significantly improves the SO2 adsorption capacity and selectivity, making it a durable method for SO2 capture.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Engineering, Environmental
Siming Guo, Qingjun Yu, Shunzheng Zhao, Xiaolong Tang, Ya Wang, Yiming Ma, Yuhan Long, Honghong Yi
Summary: Sulfocompounds in flue gas can affect pipeline stability and air quality. Porous materials like carbon-based materials, molecular sieves, metal oxides, and MOFs can be used to adsorb these compounds. Adsorption mechanisms and regenerating methods for porous materials are summarized in this study.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Hanyu Deng, Wenzhen Cai, Lanhe Zhang, Yanping Jia, Xiaoqiang Wang, Qing Zong, Guishi Cheng, Xiaoying Hu, Changqing Dong, Ying Zhao
Summary: The dry desulfurization technology of activated coke/carbon (AC) adsorption has been widely applied, especially in the industry that requires the feedstock H2SO4. This work conducted temperature-programmed experiments to study the thermal regeneration of spent activated carbon in flue gas desulfurization, focusing on the dominant reaction between adsorbed H2SO4 and carbon: 2H(2)SO(4) + C -> CO2 + 2H(2)Ogas + 2SO(2). The inhibitory effect of H(2)Ogas on regeneration was verified for the first time, which is useful for reducing carbon consumption.
Article
Chemistry, Multidisciplinary
Lawrence Koech, Raymond C. Everson, Burgert Hattingh, Hilary Rutto, Letsabisa Lerotholi, Hein W. J. P. Neomagus
Summary: This study investigated the absorption of SO2 from flue gases using three different sorbents in a spray dryer. The findings showed that trona had the highest SO2 removal efficiency of 94% at a temperature of 120℃ and a stoichiometric molar ratio of 1.5, compared to hydrated lime (82%) and limestone (76%).
Article
Engineering, Chemical
Peng Liu, Shiliang Yang, Jianhang Hu, Hua Wang
Summary: This study used a multi-phase particle-in-cell method to simulate the motion of particles of different sizes in a flue gas desulfurization reactor, and employed the double-film theory to simulate the heat and mass transfer processes. Various factors affecting gas-solid flow and mass transfer processes were comprehensively analyzed. The results showed good agreement between the simulated and experimental results, validating the reliability of the model.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Milan Milotic, Slavko Duric, Zoran Cepic, Dragan Adamovic, Boris Obrovski, Dragisa Dordic, Milena Stosic
Summary: The experimental investigation aimed to examine the possibility of removing SO2 from flue gases by cleaning with a lime suspension and formic acid solution. The results showed that the cleaning efficiency of the lime suspension was good, and the addition of formic acid at different ratios further improved the cleaning efficiency.
Article
Environmental Sciences
Binghua Xie, Na Geng, Qian Yu, Di He, Fang Wang, Tiancheng Liu, Jiyun Gao, Ping Ning, Xin Song, Lijuan Jia
Summary: The study proposed a novel desulfurization method using blast furnace dust slurry to control SO2 emission and achieve waste control targets, with optimal conditions yielding 100% desulfurization efficiency. Response surface methodology results indicated the significant influence of oxygen concentration on SO2 removal efficiency. The potential desulfurization mechanism of blast furnace dust was proposed, providing a promising and low-cost desulfurization technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Physical
Lili Jiang, Ke Mei, Kaihong Chen, Rina Dao, Haoran Li, Congmin Wang
Summary: An efficient method for predicting the capture of SO2 from flue gas using imidazolium ionic liquids was reported. Through quantitative calculations and design, the absorption performance of various imidazolium ionic liquids for SO2 was predicted and validated through experiments.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Food Science & Technology
Boya Lv, Peng Wu, Xiao Dong Chen
Summary: In this study, the texture characteristics of cooked rice and fried rice in simulated digestion environments were explored using a micro texture analyzer (MTA). The results showed that the hardness of cooked rice decreased significantly during digestion, while the hardness of fried rice decreased less. The study also found a weak negative correlation between the elastic modulus and the moisture content of cooked rice. These findings are practically meaningful for understanding the influence of textural modifications on digestion and the release of nutrients.
JOURNAL OF TEXTURE STUDIES
(2022)
Article
Biochemistry & Molecular Biology
Zejun Hu, Peng Wu, Luping Wang, Zongyu Wu, Xiao Dong Chen
Summary: This study found that A-DHA microcapsules exhibited more stable release and digestion behaviors in the gastrointestinal tract, with better resistance to gastric proteolysis, while T-DHA microcapsules showed a decrease in release due to interaction with bile salts forming micelles. Significant positive correlations were observed between the release ratio of both microcapsules and protein hydrolysis.
Article
Food Science & Technology
Junyan Wang, Peng Wu, Jingjing Wang, Juan Wang, Biao Gu, Fangzi Ge, Xiao Dong Chen
Summary: This study shows that brown rice has higher pH buffering capacity and larger digesta particle size due to the protective effect of the outer bran layer, resulting in lower starch hydrolysis and overall digestibility in the stomach compared to white rice. Additionally, the in vitro system demonstrated effective size reduction and sieving efficiency in digesta emptied out of the stomach in both white and brown rice during digestion.
FOOD STRUCTURE-NETHERLANDS
(2022)
Article
Chemistry, Applied
Qianyu Ye, Fangzi Ge, Yong Wang, Peng Wu, Xiao Dong Chen, Cordelia Selomulya
Summary: The study utilized a dynamic in vitro human stomach (DIVHS) to simulate realistic gastric conditions and investigate controlled release from foods. By incorporating curcumin-whey protein microparticles into yogurt during short/long gastric residence times, it was found that proteolysis and dilution played important roles in influencing digesta viscosity, and the maximum curcumin release was dependent on gastric emptying kinetics in each residence time. This research highlights the significance of understanding the impact of gastrointestinal processes on targeted release formulations.
Article
Food Science & Technology
Shahid Iqbal, Ping Zhang, Peng Wu, Renpan Deng, Xiao Dong Chen
Summary: This study investigated the effects of normal and high amylose maize starch on the microstructure, rheology, and lipolysis of water-in-oil emulsions during digestion. The results showed that emulsions with high amylose starch had a more compact network structure, higher viscosity, and released fewer free fatty acids during digestion.
INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Chemical
Liang Li, Cuomu Baima, Jingyu Jiang, Zhendong Liu, Jingjing Wang, Xiao Dong Chen, Peng Wu
Summary: This study quantified the gastric digestion and emptying of a traditional Tibetan diet in elderly individuals. The results showed that elderly individuals had slower gastric emptying rates and impaired protein digestion compared to young adults. These findings highlight the importance of developing food products suitable for the elderly.
JOURNAL OF FOOD ENGINEERING
(2022)
Article
Pharmacology & Pharmacy
Qianyu Ye, Meilai Ding, Ping Zhang, Peng Wu, Yong Wang, Cordelia Selomulya, Xiao Dong Chen
Summary: In this study, the application of low-field nuclear magnetic resonance (LF-NMR) imaging in vitro was reported, which allows for the visualization, distinction, and localization of drug ingredients in real time. LF-NMR can provide valuable information for the development of drug release monitoring systems.
Article
Chemistry, Applied
Yanmei Huang, Peng Wu, Xiao Dong Chen
Summary: Flavonoids extracted from a potential edible dandelion were found to have a high level of pancreatic alpha-amylase inhibitory activity. The addition of dandelion flavonoids hindered the digestion of starch, resulting in an increase in resistant starch content. This study suggests that dandelion flavonoids can potentially be used as a functional additive for low glycemic index diets.
FOOD HYDROCOLLOIDS
(2022)
Article
Chemistry, Applied
Xue Dong, Peng Wu, Haihua Cong, Xiao Dong Chen
Summary: This study investigated the influence of sodium ion strength on the properties and microstructure of WPI gels during in vitro digestion. Results showed that lower salt concentrations formed fine-stranded gels, while higher salt concentrations formed coarse-stranded gels. Salt concentration also affected the elastic modulus and digestion rate of the gels.
FOOD HYDROCOLLOIDS
(2022)
Article
Food Science & Technology
Zhendong Liu, Qunpei Suolang, Jingjing Wang, Liang Li, Zhang Luo, Peng Shang, Xiao Dong Chen, Peng Wu
Summary: This study investigated the influence and mechanism of heat treatments on the digestion kinetics of yak milk. The results showed that heat treatments led to the formation of more protein clots and aggregates in yak milk, and also affected the hydrolysis of fat globules. Heat treatments prolonged the gastric emptying time of yak milk and reduced protein digestibility. These findings are important for understanding the impact of heat treatments on the digestion kinetics of yak milk.
FOOD RESEARCH INTERNATIONAL
(2022)
Article
Biochemistry & Molecular Biology
Zejun Hu, Peng Wu, Yiqing Chen, Luping Wang, Xia Jin, Xiao Dong Chen
Summary: In this study, an ex vivo absorption model based on the permeability of the rat small intestine was established to evaluate the intestinal absorption of DHA microcapsules with five formulations after gastrointestinal digestion. The results showed that the permeability of glucose solution increased with concentration, while the absorption rate of DHA microcapsules was low. The absorption rate was also influenced by the release of free fatty acids from the microcapsules.
Article
Food Science & Technology
Shahid Iqbal, Ping Zhang, Peng Wu, Anlei Ge, Timothy V. Kirk, Xiao Dong Chen
Summary: This study examines the digestion of ultra-high temperature milk with different levels of fat content and determines its impact on viscosity and microstructure. Higher fat formulations result in increased viscosity and larger droplet size, with faster release of free fatty acids during digestion. However, these formulations show lower conversion of triglycerides at the end of the intestinal phase.
INTERNATIONAL JOURNAL OF DAIRY TECHNOLOGY
(2023)
Article
Food Science & Technology
Ni Wang, Juan Wang, Peng Wu, Haihua Cong, Saartje Hernalsteens, Xiao Dong Chen
Summary: Long-term colonization of desired probiotic bacteria in the human colon is difficult to achieve. This study explored the challenges in the growth of Lactobacillus rhamnosus GG (LGG) and Bifidobacterium animalis subsp. lactis BB-12 (BB-12) in a simulated colon environment. The addition of glucose significantly promoted the growth of LGG and BB-12, suggesting it could serve as a potential "food" for colon fermentation of probiotics. The concept of a "food parcel for colon microbes" was proposed, which may be a promising strategy for promoting probiotic colonization and regulating gut microbiota in the colon.
