Adsorption of microcystin-LR on mesoporous carbons and its potential use in drinking water source
- Adsorption of microcystin-LR on mesoporous carbons and its potential use in drinking water source
- 이상협; 최재우; 정성목; 박정안; 이인걸; 김성배
- mesoporous carbon; adsorption; microcystin-LR; pore diffusion; water quality parameter; drinking water source
- Issue Date
- VOL 177-23
- 8.0) and the existence of organic matter (2– 5 mg/L). Furthermore, the final concentration of MC-LR was below the WHO guideline level after a 10-min reaction with 20 mg/L of MC1 in the Nak-Dong River, a drinking water source. The MC-LR adsorption mainly competed with humic substances (500– 1000 g/mole); however, they did not have a great effect on adsorption.; Microcystin-LR (MC-LR) is a common toxin derived from cyanobacterial blooms an effective, rapid and non-toxic method needs to be developed for its removal from drinking water treatment plants (DWTP). For an adsorption-based method, mesoporous carbon can be a promising supplemental adsorbent. The effect of mesoporous carbon (MC1, MC2, and MC3) properties and water quality parameters on the adsorption of MC-LR were investigated and the results were analyzed by kinetic, isotherm, thermodynamic, Derjaguin– Landau– Verwey– Overbeek (DLVO), and intraparticle diffusion models. MC1 was the most appropriate type for the removal of MC-LR with a maximum adsorption capacity of 35,670.49 μg/g. Adsorption of MC-LR is a spontaneous reaction dominated by van der Waals interactions. Pore sizes of 8.5– 14 nm enhance the pore diffusion of MC-LR from the surface to the mesopores of MC1. The adsorption capacity was not sensitive to changes in the pH (3.2–
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