摘要
从三种类型的脱色剂中筛选出酸活化凹凸棒土适用于棉籽油脱色。采用正交实验法,研究了不同酸活化改性凹凸棒土对棉籽油脱色的影响,得到了合适的酸活化条件为硫酸用量80 m L,硫酸浓度9 g/L,活化温度60℃,活化时间2.5 h。同时,选用此酸活化条件下的酸化凹凸棒土,采用单因素法对棉籽油进行脱色工艺研究,得到了最佳脱色工艺条件:脱色温度80℃,脱色时间20 min,脱色剂添加量5%,脱色率达77%以上。
Acid-modified attapulgite was suitable for cottonseed oil discoloring from three types of decolorizing agent. Using orthogonal experiment method, the acid activation of modified attapulgite was studied on the properties of cottonseed oil bleaching, suitable acid activation conditions were obtained. The optimized acid-modified condition was adding 80 m L of 9 g/L H2SO_4 and keeping 2.5 h at 60 ℃. At the same time, the better acidification attapulgite discoloring performance of cottonseed oil was studied, and obtained the best discoloring process conditions： adding attapulgite 5 % into cottonseed oil at 80 ℃, 20 min, and the decoloration rate could reach more than 77 %.
出处
《广东化工》
CAS
2016年第17期34-35,14,共3页
Guangdong Chemical Industry
基金
[基金项目]中科院广州能源所盱眙凹土研发中心建设(HAP201418)
关键词
凹凸棒土
酸活化
棉籽油
脱色
attapulgite
sulfuric acid activated
cottonseed oil
bleaching
