Activated Carbon Adsorption System

Activated Carbon Adsorption System - This primarily refers to VOCs exhaust treatment, mainly consisting of an activated carbon adsorption box, fan ductwork, dust removal, and a series of other systems.

Activated carbon adsorption can be categorized into physical adsorption and chemical adsorption.

Physical adsorption primarily occurs during the process of activated carbon removing impurities from both liquid and gas phases. The porous structure of activated carbon provides a vast surface area, making it highly efficient in absorbing and collecting impurities. Just like a magnet, all molecules possess intermolecular attractions. Consequently, the numerous molecules on the activated carbon's pore walls can generate strong attractive forces, drawing impurities within the medium into the pores. It must be noted that the diameter of the adsorbed impurity molecules must be smaller than the pore size of the activated carbon to ensure their absorption into the pores. This is why we continuously alter raw materials and activation conditions to create activated carbon with varying pore structures, making it suitable for various applications in impurity absorption.

In addition to physical adsorption, chemical reactions often occur on the surface of activated carbon. Activated carbon not only contains carbon but also has trace amounts of oxygen and hydrogen in the form of chemically bonded functional groups on its surface, such as carboxyl, hydroxyl, phenolic, lactone, quinone, and ether groups, among others. These surface oxides or complexes can undergo chemical reactions with the adsorbed substances, thereby binding and aggregating with them on the surface of the activated carbon. For instance, during the process, activated carbon can react with hypochlorite ions in water, converting them into chloride ions, thereby removing hypochlorite from the water and eliminating its unpleasant taste and odor.