| 수처리용 세라믹 기반 그래핀 맴브레인의 합성 및 물질이동특성 |
| 김창민1,2, 박기범1,2, 김광수3, 김인수1,2 |
1글로벌 담수화 연구센터
2광주과학기술원 환경공학부
3한국건설기술연구원 환경플랜트 연구소 |
| Fabrication of Ceramic-based Graphene Membrane (CbGM) and Its Mass Transport Behavior for Water Treatment |
| Chang-Min Kim1,2, Ki-Bum Park1,2, Kwang-Soo Kim3, In S. Kim1,2 |
1Global Desalination Research Center (GDRC)
2School of Environmental Science and Engineering (SESE), Gwangju Institute of Science and Technology (GIST)
3Environmental Engineering Research Division, Korea Institute of Civil Engineering and Building Technology (KICT) |
| Corresponding author |
In S. Kim ,Tel: 062-715-2436, Fax: 062-715-2434, Email: iskim@gist.ac.kr
|
|
|
Received: April 7, 2015; Revised: June 23, 2015; Accepted: November 30, 2015. Published online: November 30, 2015. |
|
|
| ABSTRACT |
|
As a novel water treatment membrane, concept of ceramic-based graphene membrane (CbGM) was suggested, and its mass transport behavior was investigated. The selectivity of CbGM was given by graphene material which is consisting of active layer, only transmitting water, but rejecting salts. Filtration-assisted assembly methods was employed as a facile method to fabricate CbGM. Surface morphology and characteristics of CbGM were analyzed by scanning electron microscopy (SEM) and contact angle. In addition, three different kinds of solutes (i.e., NaCl, MgCl2, Na2SO4) were tested in batch forward osmosis system to confirm the mass transport behavior. Through surface morphology analysis and mass transport behavior, it was revealed that interlocking between graphene layers is very important, rather than thickness of laminated graphene layers, in terms of selectivity to CbGM. All the anions in each solute showed faster transport than those of cations. In addition, solutes which have high ion valence charge ratio of anion to cation (Z-/Z+) was easier to be passed through CbGM. It indirectly implied that the surface charge of CbGM appear to be positive. In addition, It showed that surface charge of CbGM has a great role on mass transport, in particular, transport of matter having charges, generally ions. |
| Key Words:
Water Treatment, Ceramic-based Graphene Membrane (CbGM), Mass Transport Behavior |
|
PDF Links
Full text via DOI
Download Citation 
