Either bleaching clay or clarifying clay possesses larger area, higher absorbability and better decoloration as both are resulted from activation (or acidification) process of bentonite.

• 漂白粘土和澄清粘土应具有较大的表面积、较高的吸附性能及褪色能力,多由膨润土经活化(酸化)处理后制成。