Citation: JIA Yu-Xiang, LI Yan, HU Yang-Dong. Behavior of Carbon Nanotube Membranes as Channels of Salt and Water in Forward Osmosis Process[J]. Acta Physico-Chimica Sinica, ;2011, 27(01): 228-232. doi: 10.3866/PKU.WHXB20110104 shu

Behavior of Carbon Nanotube Membranes as Channels of Salt and Water in Forward Osmosis Process

1.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong Province, P. R. China

Received Date: 12 July 2010
Available Online: 19 November 2010
Fund Project: 国家自然科学基金(20806076) (20806076)国家重点基础研究发展计划(973) (2003CB615706)资助项目 (973) (2003CB615706)

We investigated the influence of carbon nanotube (CNT) size using CNTs including CNT(6,6), CNT(7,7), CNT(8,8), CNT(9,9), CNT(10,10), and CNT(11,11), and the influence of draw solution concentrations, such as 2.5, 3.75, and 5.0 mol·L^-1, on the permeation behaviors of salt and water molecules through the biomimetically manufactured forward osmosis (FO) membranes. Nanosecondscale molecular dynamic simulations were carried out to obtain the relevant information, including the distributions of the water molecules, water flux, and salt permeation within the different CNT membranes. Simulation results show that the FO membrane incorporating CNT(8,8) can achieve the highest water flux and also the lowest salt permeation.
- Forward osmosis, Membrane separation, Desalination, Carbon nanotube,
- Molecular dynamics simulation
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沈阳化工大学材料科学与工程学院沈阳 110142