الرئيسية » أرشيف الوسم : adsorption

أرشيف الوسم : adsorption

إمتزاز adsorption

وهي عملية امتصاص المواد المنحلة أو الغازات على سطح جسم صلب أو سائل . المواد الصلبة المسامية أو المطحونة جيدا يمكن أن تحتجز الكثير من المادة الممتزة  بسبب مساحة السطح الكبيرة المعروضة و بنفس الطريقة فإن مساحة سطح المادة الممتزة السائلة تكون أكبر إذا تم تقسيم السائل إلى قطرات صغيرة …

أكمل القراءة »

Adsorption

A process in which atoms or molecules move from a bulk phase (that is, solid, liquid, or gas) onto a solid or liquid surface. An example is purification by adsorption where impurities are filtered from liquids or gases by their adsorption onto the surface of a high-surface-area solid such as …

أكمل القراءة »

Adsorption

A process in which atoms or molecules move from a bulk phase (that is, solid, liquid, or gas) onto a solid or liquid surface. An example is purification by adsorption where impurities are filtered from liquids or gases by their adsorption onto the surface of a high-surface-area solid such as …

أكمل القراءة »

activated carbon

A powdered, granular, or pelleted form of amorphous car­bon characterized by very large surface area per unit volume because of an enormous number of fine pores. Activated carbon is capable of collecting gases, liquids, or dis­solved substances on the surface of its pores. Adsorption on activated carbon is selective, favoring …

أكمل القراءة »

adsorption isotherm

adsorption isotherm An equation that describes how the amount of a substance adsorbed onto a surface de­pends on its pressure (if a gas) or its concentration (if in a solution), at a constant temperature. Several ad­sorption isotherms are used in sur­face chemistry including the BET isotherm and the Langmuir ad­sorption …

أكمل القراءة »