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| 稻壳灰二氧化硅（RHAS）的制备、表征 及在菜籽油脱胶中的应用 |
| Preparation and characterization of rice husk ash silica and its application in degumming of rapeseed oil |
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| DOI：10.12166/j.zgyz.1003-7969/2020.02.011 |
| 中文关键词: 稻壳 稻壳灰二氧化硅 比表面积 吸附脱胶 菜籽油 |
| 英文关键词:rice husk rice husk ash silica specific surface area adsorption degumming rapeseed oil |
| 基金项目:安徽省高等学校自然科学研究项目（KJ2019A1116） |
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| 中文摘要: |
| 利用农业生产的副产物稻壳为原料，制备了比表面积大、结构细的稻壳灰SiO2(RHAS)，同时采用EDX、FTIR、XRD、SEM、N2吸附-脱附对RHAS进行了表征与分析，并以RHAS为脱胶剂，考察RHAS对菜籽油的脱胶效果。结果表明：RHAS颗粒大小均匀、结构疏松，BET比表面积达149 cm2/g；RHAS对菜籽油中的磷脂有较强的吸附脱除作用，在脱胶温度50 ℃、脱胶剂用量45%、脱胶时间40 min 条件下，脱胶率可达57.8%，且再生循环6次脱胶，脱胶率仍达35%左右。RHＡS可作为一种良好的新型植物油吸附脱胶剂。 |
| 英文摘要: |
| Rice husk ash silica (RHAS) with high specific surface area and fine structure was prepared from rice husk, a by-product of agricultural production, and different approaches including EDX, FTIR, XRD, SEM and BET were used to characterize the RHAS. Meanwhile, RHAS was used as the degumming agent to investigate the effect of RHAS in the degumming process of rapeseed oil.The results showed that RHAS had uniform particle size and loose structure, and the BET specific surface area was 149 cm2/g. RHAS had strong adsorption effect on phospholipids in rapeseed oil, and the degumming rate could reached 57.8% under the conditions of degumming temperature 50 ℃, RHAS dosage 4.5%, and degumming time 40 min. After six cycles of degumming, the degumming rate was still about 35%.Therefore, RHAS could be used as a good new vegetable oil adsorption degumming agent. |
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