And it was used as adsorbent to decolor wastewater containing direct red 4b and methyl orange. The factors affecting adsorption were studied.
以膨胀石墨为吸附剂，对直接大红4b、甲基橙染料废水进行了吸附脱色研究，探讨了影响吸附的因素。
2
As a result, after coating, both fabrics dyed with Acid Orange 7, Reactive Red KD-8B or Direct Red f, their fastness in particular sunlight fastness was improved greatly.