SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (2): 121-126.DOI: 10.1016/S1004-9541(13)60449-8

• 材料与产品工程 • 上一篇    下一篇

Preparation of Calcium Carbonate Nanoparticles with a Continuous Gas-liquid Membrane Contactor: Particles Morphology and Membrane Fouling

贾志谦, 常青, 秦晋, 阿伊努尔·买买提   

  1. Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China
  • 收稿日期:2011-05-12 修回日期:2012-07-12 出版日期:2013-02-28 发布日期:2013-03-13
  • 通讯作者: JIA Zhiqian
  • 基金资助:

    Supported by the National Natural Science Foundation of China (20676016, 21076024).

Preparation of Calcium Carbonate Nanoparticles with a Continuous Gas-liquid Membrane Contactor: Particles Morphology and Membrane Fouling

JIA Zhiqian, CHANG Qing, QIN Jin, MAMAT Aynur   

  1. Lab for Membrane Science and Technology, College of Chemistry, Beijing Normal University, Beijing 100875, China
  • Received:2011-05-12 Revised:2012-07-12 Online:2013-02-28 Published:2013-03-13

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.

关键词: membrane contactor, gas-liquid reaction, CaCO3 nanoparticles, two-phase reaction, membrane absorption

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.

Key words: membrane contactor, gas-liquid reaction, CaCO3 nanoparticles, two-phase reaction, membrane absorption