The purpose of bleaching is to wipe off some pigment minim-metal ,soap, lecithoid ,remnant pesticide and other impurity.

于去素、微量金属、皂粒、胶质、残留农药和其它杂质。

The results show that hydrolysed keratin after proper modification Obtains excellent decolourizing. effects on the majority ofdyestuffs.

结果表明，水解角蛋白经适当改性，对大多数种类染料具有良好效果。

The result shows that the bleaching clay treated by the three methods can make effects on the oil decolouration.

用这三种处理方法制得再生白，对油脂进行，都具有一定效果。

The results showed that the activated charcoal was the best in the decolorizing, but its curding strength decreased almost to zero.

结果发现,活性炭效果最好,但其后凝乳力较小;硅胶效果较好,且后培养液凝乳力也较高。

Bleaching earth filtration —Complete removal of the bleaching media from the bleached oil is very important since residual earths can act as a prooxidant.

白过滤—完全去油中白是非常重要，因为残留白会促进氧化。

A process for decolourization of anionic dye containing wastewater by using waste plastics in the presence of cationic auxiliary and sodium dodecylbenzene sulfonate has been studied.

探讨了阳离子助剂及十二烷基苯磺酸钠存下,利用废旧塑料对阴离子染料工艺。

The effects of different methods and conditions on the structure and surface properties were studied by XRD, nonaqueous solution titration, and decoloring performance on orcein dye.

用XRD、非水溶液滴定法及对红染料能力等研究了制备方法及条件变化对蒙石层间结构、表面性质影响。