| 新疆夏子街膨润土的特性及其酸活化产品脱色性能的研究 |
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| 引用本文： | 武占省,李春,孙喜房,徐小琳,代斌,李金娥,赵宏生. 新疆夏子街膨润土的特性及其酸活化产品脱色性能的研究[J]. 中国化学工程学报, 2006, 14(2): 253-258. DOI: 10.1016/S1004-9541(06)60067-0 |
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| 作者姓名： | 武占省 李春 孙喜房 徐小琳 代斌 李金娥 赵宏生 |
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| 作者单位： | [1]School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China [2]Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China [3]School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| 基金项目： | Supported by Doctor Funds Xinjiang Production and Construction Corps （ZDGG2004-01） and Shihezi University＇s Key Scien tific and Technological Project of China （04BSZJ04）.ACKN0WLEDGEMENTS The authors would like to thank the sponsorship to this work and acknowledge XinJiang Xiazijie Bentonite Co. Ltd. for providing the bentonite samples for this study, and are grateful to Mr. Shimin Ma for assistance in the experimental work. |
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| 摘 要： | Bentonite produced in Xiazijie, Xinjiang （China） was characterized by X-ray diffraction （XRD）, differential thermal analysis （DTA）, thermogravimetric analysis （TG） and cation exchange capacity （CEC）. The bentonite is composed of dioctahedral montmorillonite with predominant quantity, certain amounts of quartz, feldspar and illite and minor amounts of kaolinite, gypsum, etc. The raw bentonite has a CEC of 0.6497 meq·g^-1 and allows to be characterized as typical sodium bentonite. In order to bleach cottonseed oil, optimum conditions for sulfuric acid activation of the raw bentonites were investigated, which were obtained by selecting various acid strength, at 96-98℃ and activating for 4h with 1 ： 2 solid-liquid ratio. The acid activation bentonites were suitable for decolorization of cottonseed oil through removing carotene and chlorophyll. The bleaching capabilities of different pigments with activated bentonite with treatment of 25% sulfuric acid were 70.3%, 73.1%, 83.2%, 81.8% and 88.9%, respectively. Bleaching with acid activated bentonite gave oils lower peroxide values and acid values.
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| 关 键 词： | 新疆夏子街 膨润土 特性 酸活化产品 脱色性能 吸附 |
| 收稿时间： | 2005-07-04 |
| 修稿时间： | 2005-07-042005-09-29 |
Characterization, Acid Activation and Bleaching Performance of Bentonite from Xinjiang |
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| Zhansheng WU, Chun LI, Xifang SUN, Xiaolin XU, Bin DAI, Jin''e LI,Hongsheng ZHAO. Characterization, Acid Activation and Bleaching Performance of Bentonite from Xinjiang[J]. Chinese Journal of Chemical Engineering, 2006, 14(2): 253-258. DOI: 10.1016/S1004-9541(06)60067-0 |
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| Authors: | Zhansheng WU Chun LI Xifang SUN Xiaolin XU Bin DAI Jin''e LI Hongsheng ZHAO |
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| Affiliation: | School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China School of Life Science and Technology, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Bentonite produced in Xiazijie, Xinjiang (China) was characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis (TG) and cation exchange capacity (CEC). The bentonite is composed of dioctahedral montmorillonite with predominant quantity, certain amounts of quartz, feldspar to be characterized as typical sodium bentonite. In order to bleach cottonseed oil, optimum conditions for sulfuric acid activation of the raw bentonites were investigated, which were obtained by selecting various acid strength, at 96-98℃ and activating for 4h with 1: 2 solid-liquid ratio. The acid activation bentonites were suitable for decolorization of cottonseed oil through removing carotene and chlorophyll. The bleaching capabilities of different pigments with activated bentonite with treatment of 25% sulfuric acid were 70.3%, 73.1%, 83.2%, 81.8% and 88.9%,respectively. Bleaching with acid activated bentonite gave oils lower peroxide values and acid values. |
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| Keywords: | bentonite characterization acid-activation bleaching capacity Xiazijie |
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