Adsorption Characteristics of 2-MIB Onto Powdered Activated Carbons in the Reservoir Type Source Water

In order to solve the problem of seasonal pollution of reservoir water by taste and odor caused by algae,the adsorption kinetics and isothermal adsorption modeling of 2-methylisoborneol(2-MIB) by powdered activated carbons(PAC) in different water quality were studied,and the adsorption effects of organic matter in two kinds of reservoir water were investigated.Resultsshowed that,in the range of test concentration,the adsorption processes followed pseudo-second-order kinetics equation and the modified Freundlich equation in pure water,raw water A and B,and the adsorption rate and adsorption capacity reduced in turn.The adsorption capacity decreased significantly in raw water A and B,but the adsorption potential energies of 2-MIB on activated carbon in raw water B was stronger than that of raw water A,due to the micropore competitive adsorption and polarity caused by the reservoir water of small organic molecules with relative molecular weight of <500 u.