Carbon Nanotube Immobilized Composite Hollow Fiber Membranes for Extraction of Volatile Organics from Air
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- 作者：Smruti Ragunath ; Somenath Mitra
- 刊名：Journal of Physical Chemistry C
- 出版年：2015
- 出版时间：June 11, 2015
- 年：2015
- 卷：119
- 期：23
- 页码：13231-13237
- 全文大小：359K
- ISSN：1932-7455
文摘
This paper reports the development of novel carbon nanotube immobilized composite membranes (CNIMs) for the extraction of volatile organics from air. The nanotubes were immobilized onto the selective layer of a composite membrane where they served as sorption sites and provided additional pathways for enhanced solute transport. Depending upon the process conditions, the presence of carbon nanotubes led to the organic removal with flux as high as 37.7 脳 10鈥?, 72.9 脳 10鈥?, and 8.22 脳 10鈥? gm鈥痬ol/m2鈥痬in and an increase in mass-transfer coefficient of about 92.2%, 22.7%, and 44.3% for toluene, dichloromethane, and ethanol, respectively. The CNIMs demonstrated several advantages, including enhanced recovery at low concentrations and low temperature.