Bleaching earth filtration —Complete removal of the bleaching media from the bleached oil is very important since residual earths can act as a prooxidant.
The Effect of Refining Treatment on Penicium ZCF57 Crude Enzyme Prebleaching Efficiency to wheat straw chemical pulp was investigated by using selected DED bleaching sequence.
All the samples include Suzhou satin , Surah and Sangbo satin.There are bleached silk fabrics , dyed silk fabrics and fabrics treated by softener and totally amount of 29 kinds.