Abstract
Dynamic adsorption equation was evaluated for its validity to characterize two different initial adsorption mechanisms with dimethyl methylphosphonate (DMMP) and cyanogen chloride (CNCl) onto ASC whetlerite carbon. Experimental results show that a linear relation between breakthrough time and the amount of carbon was occurred with high values of coefficient of correlation (0.9790–0.9993 for DMMP, 0.9979–0.9998 for CNCl) satisfying the pre-requirement for application of the adsorption equation. With initial adsorption data, as superficial flow rate increases, the dynamic adsorption capacity for DMMP increases and that for CNCl decreases which are not consistent with the earlier observation of less-relationship between dynamic adsorption and superficial flow rate. An effort was conducted to obtain numerical formulas for the dynamic adsorption capacity as a function of superficial flow rate and the calculated maximum adsorption capacities for DMMP and CNCl were 0.4291 (g/g) and 0.2500 (g/g), respectively.
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