| 利用连续式膜气液接触器制备纳米CaCO3:粒子形貌和膜污染（英文） |
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| 引用本文： | 贾志谦,常青,秦晋,阿伊努尔.买买提.利用连续式膜气液接触器制备纳米CaCO3:粒子形貌和膜污染（英文）[J].中国化学工程学报,2013,21(2):121-126. |
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| 作者姓名： | 贾志谦 常青 秦晋 阿伊努尔.买买提 |
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| 作者单位： | Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China(20676016, 21076024) |
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| 摘 要： | Nanosized calcium carbonate particles were prepared with a continuous gas-liquid membrane contactor. The effects of Ca(OH)2 concentration, CO2 pressure and liquid flow velocity on the particles morphology, pressure drop and membrane fouling were studied. With rising Ca(OH)2 concentrations, the average size of the particles increased. The effects of Ca(OH)2 concentration and CO2 pressure on particles were not apparent under the experimental conditions. When the Ca(OH)2 concentration and liquid flow velocity were high, or the CO2 pressure was low, the fouling on the membrane external surface at the contactor entrance was serious due to liquid leakage, whereas the fouling was slight at exit. The fouling on the membrane inner-surface at entrance was apparent due to adsorption of raw materials. The membrane can be recovered by washing with dilute hydrochloric acid and reused for at least 6 times without performance deterioration.
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| 关 键 词： | membrane contactor gas-liquid reaction CaCO3 nanoparticles two-phase reaction membrane absorption |
| 收稿时间： | 2011-05-12 |
Preparation of Calcium Carbonate Nanoparticles with a Continuous Gas-liquid Membrane Contactor: Particles Morphology and Membrane Fouling |
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| JIA Zhiqian
,
CHANG Qing
,
QIN Jin
,
MAMAT Aynur.Preparation of Calcium Carbonate Nanoparticles with a Continuous Gas-liquid Membrane Contactor: Particles Morphology and Membrane Fouling[J].Chinese Journal of Chemical Engineering,2013,21(2):121-126. |
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| Authors: | JIA Zhiqian CHANG Qing QIN Jin MAMAT Aynur |
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| Affiliation: | Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Nanosized calcium carbonate particles were prepared with a continuous gas-liquid membrane contactor. The effects of Ca(OH)2 concentration, CO2 pressure and liquid flow velocity on the particles morphology, pressure drop and membrane fouling were studied. With rising Ca(OH)2 concentrations, the average size of the particles increased. The effects of Ca(OH)2 concentration and CO2 pressure on particles were not apparent under the experimental conditions. When the Ca(OH)2 concentration and liquid flow velocity were high, or the CO2 pressure was low, the fouling on the membrane external surface at the contactor entrance was serious due to liquid leakage, whereas the fouling was slight at exit. The fouling on the membrane inner-surface at entrance was apparent due to adsorption of raw materials. The membrane can be recovered by washing with dilute hydrochloric acid and reused for at least 6 times without performance deterioration. |
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| Keywords: | membrane contactor gas-liquid reaction CaCO3 nanoparticles two-phase reaction membrane absorption |
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