Keluarga adalah tempat dimana aku bisa berbagi tawa
Keluarga adalah tempatku melepaskan air mata
Dan keluarga juga tempatku belajar segalanya
Walau dalam hidup sederhana
Walau hidup terkadang seadanya
Tapi keluarga membuat hidupku...
History of Bleaching
The first bleaching agent was probably sunlight. The yellow color of textile was removed by fading in the sun. The word bleach comes from the Anglo-Saxon word blaechan. The meaning of this word is "to fade". The first known commercial bleaching was...
Is Washing Necessary in Bleaching?
The purpose of washing between the bleaching stages is explained in previous post, but is it really necessary? Its necessity can be demonstrated by examining what happens if the impurities are present in the next bleaching stage. Nivelon et al (1996)...
Brownstock Washing and Washing in Bleaching. What's the Difference?
Washing during kraft pulping can be divided in two separate areas each with this own distinct features, namely brownstock washing and washing in bleaching. The main purposes of brownstock washing are to remove dissolved organic and inorganic substances...
