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首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >The Use of Bentonite to Remove Dark Colour in Repeatingly Used Palm Oil
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The Use of Bentonite to Remove Dark Colour in Repeatingly Used Palm Oil

机译：使用膨润土去除重复使用的棕榈油中的深色

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摘要

Acid-activated bentonite was used as a bleaching agent to remove the dark color in repeatingly used palm oil. Two bentonite samples with different colors were used. It was found that the paler one gave better bleaching results. The optimum condition needed 5 h to reflux bentonite with sulfuric acid; pH of the bentonite suspension was 3, bleaching temperature was 80-85℃ and bleaching time was 30 min. The experiments also showed that bentonite could adsorb impurities and toxic compounds such as benzo(a)pyrene in palm oil. Chemical and physical properties of the bentonite samples were analyzed by X-ray fluorescence spectrometer (XEF), X-ray diffraction spectrometer (XRD) and scanning electron microscope (SEM). Particle size and specific surface area were also studied.
机译：酸活化的膨润土用作漂白剂，以去除反复使用的棕榈油中的深色。使用了具有不同颜色的两个膨润土样品。发现较浅的一种给出了更好的漂白效果。膨润土与硫酸回流的最佳条件为5 h。膨润土悬浮液的pH为3，漂白温度为80-85℃，漂白时间为30分钟。实验还表明，膨润土可以吸附棕榈油中的杂质和有毒化合物，例如苯并（a）py。通过X射线荧光光谱仪（XEF），X射线衍射光谱仪（XRD）和扫描电子显微镜（SEM）分析膨润土样品的化学和物理性质。还研究了粒度和比表面积。

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