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林产化学与工业 ›› 2020, Vol. 40 ›› Issue (2): 25-32.doi: 10.3969/j.issn.0253-2417.2020.02.003

• 研究报告 • 上一篇    下一篇

木质活性炭精制稻米油应用研究

王傲1,孙康1,蒋剑春1,*(),刘光华2   

  1. 1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业和草原局林产化学工程重点实验室; 江苏省生物质能源与材料重点实验室; 江苏省林业资源高效加工利用协同创新中心, 江苏 南京 210042
    2. 东莞市百大新能源股份有限公司, 广东 东莞 523000
  • 收稿日期:2019-09-06 出版日期:2020-04-28 发布日期:2020-04-27
  • 通讯作者: 蒋剑春 E-mail:jiangjc@icifp.cn
  • 作者简介:王傲(1987-),男,河北保定人,副研究员,博士,主要研究方向为活性炭材料的制备与应用
  • 基金资助:
    江苏省自然科学基金青年基金项目(BK20180154)

Application of Woody Activated Carbon in Refining of Rice Bran Oil

Ao WANG1,Kang SUN1,Jianchun JIANG1,*(),Guanghua LIU2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
    2. Dongguan Baida New Energy Co., Ltd., Dongguan 523000, China
  • Received:2019-09-06 Online:2020-04-28 Published:2020-04-27
  • Contact: Jianchun JIANG E-mail:jiangjc@icifp.cn

摘要:

在分析活性炭物化性能的基础上,探讨了4种化学法和2种物理法活性炭对四级稻米油的精制效果,并考察了工艺条件对四级稻米油精制效果的影响;通过溶剂法对吸附后活性炭进行再生,进一步分析了再生活性炭对稻米油的精制效果,以及再生过程中稻米油和谷维素的回收情况。研究结果表明:焦糖脱色率是影响活性炭对四级稻米油精制脱色效果的关键因素;化学法活性炭CAC4精制稻米油的最佳工艺条件为吸附温度50 ℃、振荡吸附时间30 min、一次性投加,此条件下且活性炭添加量30%精制后稻米油的色泽度为黄30、红3.0(罗维朋比色槽宽度133.4 mm),达到一级稻米油的标准,谷维素质量分数0.24%,谷维素损失率89.25%,稻米油损失率46.70%;CAC4吸附2次时对稻米油仍有明显的精制脱色效果。活性炭的再生结果表明:再生后活性炭的吸附性能基本恢复,具有较好的稻米油精制效果,三次再生CAC4精制稻米油的色泽度为黄30、红2.5;同时活性炭再生过程中可实现稻米油和谷维素的有效回收,以及色素分子的选择性分离。

关键词: 活性炭, 稻米油, 谷维素, 活性炭再生

Abstract:

Based on the analysis of the physicochemical properties of activated carbon, the refining effects of four activated carbon prepared by chemical method and two activated carbon prepared by physical methods on the grade four rice bran oil were studied. The influence of refining process conditions on the refining effect of the grade four rice bran oil was also investigated. Furthermore, the adsorped activated carbon was regenerated by solvent method, and the refining effect of regenerated activated carbon on the rice bran oil was analyzed, as well as the recovery of rice bran oil and oryzanol. The decolorization performance of caramel were the key factors affecting the decolorization effect of activated carbon on the refinement of grade four bran rice oil. The best technological conditions of CAC4 were as follows:adsorption temperature 50℃, adsorption time 30 min, one-time adding. Under these conditions, when the additive contents of activated carbon 30%, the color degree of refined rice bran oil was yellow 30 and red 3.0 (the width of color trough was 133.4 mm), which reached the first-grade rice bran oil standard. The content of oryzanol was 0.24%, the loss rate of oryzanol was 89.25%, and the loss rate of rice bran oil was 46.7%. When CAC4 was used to adsorbed pigment twice, the decolorization effect of rice oil was still obvious. The regeneration of activated carbon results showed that the adsorption performance of activated carbon was basically restored after regeneration, and it had good refining effect of rice bran oil. The color degree of rice oil refined byCAC4 after tertiary regeneration was yellow 30 and red 2.5. At the same time, the recovery of rice bran oil and oryzanol as well as the selective separation of pigment molecules could be realized during the regeneration process of activated carbon.

Key words: activated carbon, rice bran oil, oryzanol, regeneration of activated carbon

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