Adsorption of microcystin-LR on mesoporous carbons and its potential use in drinking water source

Title
Adsorption of microcystin-LR on mesoporous carbons and its potential use in drinking water source
Authors
이상협최재우정성목박정안이인걸김성배
Keywords
mesoporous carbon; adsorption; microcystin-LR; pore diffusion; water quality parameter; drinking water source
Issue Date
2017-06
Publisher
Chemosphere
Citation
VOL 177-23
Abstract
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&#8211
URI
http://pubs.kist.re.kr/handle/201004/66494
ISSN
0045-6535
Appears in Collections:
KIST Publication > Article
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