NDLI: Ordered mesoporous carbons and their corresponding column for highly efficient removal of microcystin-LR

Content Provider	Royal Society of Chemistry (RSC)
Author	Wu, Zhangxiong Lv, Yingying Chen, Hong Wang, Jinxiu Teng, Wei Zhao, Dongyuan Feng, Dan Asiri, Abdullah M. Fan, Jianwei
Copyright Year	2013
Abstract	Highly effective removal of toxic pollutant microcystins from water sources is achieved by employing ordered mesoporous carbons prepared from the surfactant-templating method as adsorbents. For the first time, a systematic study into the static and dynamic adsorption behaviours of ordered mesoporous carbons towards microcystin-LR (MC-LR) is demonstrated. Firstly, by adopting different mesoporous carbons with various mesostructures, textures and surface chemical properties for batch adsorption, definite relationships between the adsorption performance of MC-LR and properties of adsorbents are established. Among all the samples, the mesoporous carbon (MCS/C) obtained from a mesoporous silica–carbon composite after removing the silica component exhibits an unprecedented adsorption capacity of ∼526 mg g−1, due to its unique bimodal mesopores of ∼2.8 and 5.8 nm, a high surface area of 1680 m2 g−1, a large pore volume of 1.67 cm3 g−1 and two-dimensional (2D) straight mesopore channels. A comprehensive understanding of dynamic adsorption behaviour shows that this mesoporous carbon possesses a 30-fold higher adsorption capacity compared with powdery activated carbon at a high flux of 120 L m−2 h−1. Finally, two pollutants, Rhodamine B and phenol, are mixed with MC-LR for competitive adsorption onto the mesoporous carbon MCS/C. It is found that the total amount of removal pollutants increases sharply to ∼700 mg g−1. Considering all the advantages, the ordered mesoporous carbon MCS/C shows a promising potential for practical waste water treatment, especially for large toxin microcystin removal.
Starting Page	2765
Ending Page	2776
Page Count	12
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	6
Issue Number	9
Journal	Energy & Environmental Science
DOI	10.1039/c3ee41775a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Mesoporous material Adsorption Carbon Silicon dioxide Activated carbon Rhodamine B Phenols Microcystin
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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