JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
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2025
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IF 2.4
Xiaowen Yu,Hao Wu,Wenrui Li,Hongmin Yang
BACKGROUND The massive emission of greenhouse gases represented by CO 2 has led to many environmental and climate problems. Chemical absorption after combustion has become an effective method for CO 2 capture. Meanwhile, this method also leads to potential emission of pollutants, consisting mainly of ethanolamine (MEA) and ammonia (NH 3 ). However, few studies focus on the emission characteristics of pollutants in chemical absorption systems and the factors influencing the emissions. RESULTS In this experiment, MEA and NH 3 emissions during the CO 2 capture process by the chemical absorption method under different conditions, such as flue gas and absorbent solution temperature, liquid-to-gas ratio, CO 2 concentration in the flue gas, and absorbent CO 2 loading, were investigated. The results indicate that the MEA and NH 3 are released during the CO 2 capture process, and the amount of release varies with many parameters. Under typical conditions, the emissions of MEA and NH 3 were stabilized at 85.8 and 21.5 mg Nm −3 , respectively. The emissions of MEA and NH 3 increased steadily with the temperature of the flue gas and increasing absorbent solution. Higher liquid-to-gas ratio led to more MEA and NH 3 emissions, and higher absorbent CO 2 loading could inhibit the MEA and NH 3 emissions. Calculation of the maximum reduction rate also showed that CO 2 loading has the greatest impact on pollutant emissions, and optimizing it reduces pollutant emissions by at least 40%. CONCLUSION It was found that pollution emissions can be controlled by optimizing operating parameters, which can provide a reference for reducing pollutant emissions in the industry. © 2025 Society of Chemical Industry (SCI).
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
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2021
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IF 0
Mansurjon Juraev,Xiao Ya Zhou,Xiao Tao Ma,Cheng Fang,Ye Qian Ge,Qiu Feng Ye,Feng Ye
The structure of basic lanthanum orotate (LaOr) were characterized by elemental analysis and infrared spectroscopy. The thermal stability of polyvinyl chloride (PVC) was further studied by Congo red method, oven discoloration method and thermogravimetric analysis. The results showed that LaOr could prolong the oven discoloration time of PVC, and the color was not completely blackened until 120 min. It has a good synergetic effect with dibenzoyl methane (DBM), and the best effect is achieved when LaOr/DBM ratio is 1.8/1.2. The thermal decomposition kinetics experiment showed that adding DBM can effectively improve the activation energy of PVC/LaOr. The stabilization mechanism of PVC was studied by absorbing HCl method and infrared spectroscopy. The results showed that LaOr could not only replace the unstable chlorine atoms on PVC, but also promote the long-term thermal stability of PVC by absorbing HCl.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
ANALYTICA CHIMICA ACTA
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2020
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IF 5.977
Xuemin Huang,Maojin Lan,Jian Wang,Longhua Guo,Zhenyu Lin,Fan Zhang,Tao Zhang,Cuimin Wu,Bin Qiu
Benefit from the additional correction of the output signal in dual-mode detection, traditional dual signal readout strategies are performed by constructing the ratiometric fluorescent probe through excitation energy transfer (EET) or fluorescence resonance energy transfer (FRET). To avoid the complicated modification process and obtain the results rapidly, a simple dual-mode sensing strategy based on the electronic effects of p-nitrophenol (PNP) is described to monitor the activities of alkaline phosphatase (ALP). In the sensing platform, p-nitrophenylphosphate was used as a substrate to produce the PNP using ALP as the catalyst. Due to the PNP possesses negative effect of induction and conjugation, photoinduced electron transfer and hyperchromic effect have been achieved between PNP and polyethyleneimine-protected copper nanoclusters (PEI-Cu NCs), which caused the changes of the fluorescence intensity and UV–visible absorption. The dual-mode signal sensing system showed the satisfactory linear results of ALP from 1 to 100 U/L for fluorescent sensing strategy and 1–70 U/L for the absorption method with a competitive LOD of 0.27 and 0.87 U/L (signal-to-noise ratio of 3). This strategy detected biological ALP in human serum and bio-imaging of endogenous ALP in A549 cells successfully, which verifies a certain potential of the strategy for the practical applications.
研究领域:
生物化学
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分析化学
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生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2022
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IF 6.056
Yang Guo,Xue Yang,Yi-hong Bao,Xin-lei Zhao,Li Huang,Zhong-xiang Chen,Ying Ma,Wei-hong Lu
Pine nut oil (PNO) was gelled by solvent exchange and absorption methods through soy protein-tannic acid covalent hydrogel. The current study aimed to compare the in vitro digestion of oleogels prepared by different methods: solvent exchange (network oleogel [SNO] and particulate oleogel [SPO]) and absorption methods (AO), and probe the effect of oleogelation on oxidation. Results showed that the preparation affected the physicochemical properties of oleogels; during in vitro digestion, lipolysis was delayed for the oleogels as compared to that for PNO, and the extent of lipolysis followed the order of AO > SNO > SPO > PNO. The fatty acid profile in the micelle fraction demonstrated enhanced solubilization of unsaturated fatty acids (UFAs), especially pinolenic acid. During storage, oleogels had lower peroxide, thiobarbituric acid, and conjugated diene values than PNO, indicating superior oxidation stability. Thus, this work provides valuable directions for designing a delivery system to facilitate UFAs digestion and improve the oxidation stability of PNO.
研究领域:
食品科学
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营养学
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化学工程
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）