Park, Jeong-Ann Jung, Sung-Mok Yi, In-Geol Choi, Jae-Woo Kim, Song-Bae Lee, Sang-Hyup 2024-01-20T01:31:21Z 2024-01-20T01:31:21Z 2021-09-04 2017-06 0045-6535 https://pubs.kist.re.kr/handle/201004/122698 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 (MCI, 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 mu g/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 (3.2-8.0) 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. (C) 2017 Published by Elsevier Ltd. English PERGAMON-ELSEVIER SCIENCE LTD Adsorption of microcystin-LR on mesoporous carbons and its potential use in drinking water source Article 10.1016/j.chemosphere.2017.02.150 1 CHEMOSPHERE, v.177, pp.15 - 23 CHEMOSPHERE 177 15 23 N scie scopus 000399266600003 2-s2.0-85014465988 Environmental Sciences Environmental Sciences & Ecology Article POWDERED ACTIVATED CARBON AQUEOUS-SOLUTIONS DYE ADSORPTION CYANOBACTERIA REMOVAL EQUILIBRIUM SORPTION SURFACE TOXINS ACID Mesoporous carbon Adsorption Microcystin-LR Pore diffusion Water quality parameter Drinking water source