Bhunia, Prasenjit ; Kumar, Monish ; De, Sirshendu (2019) Fast purification of graphene oxide solution by continuous counter current hollow fibre dialysis: A step towards large scale production The Canadian Journal of Chemical Engineering, 97 (S1). pp. 1596-1604. ISSN 0008-4034
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Official URL: http://doi.org/10.1002/cjce.23380
Related URL: http://dx.doi.org/10.1002/cjce.23380
Abstract
Continuous countercurrent hollow fibre based dialysis was used to purify a graphene oxide (GO) solution rapidly. A 12 kDa cutoff membrane was used for this purpose. The deposited layer of GO particles and flakes acted as a dynamic membrane that entrapped electrolytes, to some extent. This method took 17 h to purify 1 L of GO solution compared to several weeks by batch dialysis without compromising purification efficiency. A one-dimensional steady state model was used to estimate the overall mass transfer coefficient and predict the concentration profiles of feed and dialysate side. Thus, the demonstrated method was a step towards large scale production of GO.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to NRC Research Press. |
| ID Code: | 136200 |
| Deposited On: | 21 May 2025 07:08 |
| Last Modified: | 21 May 2025 07:08 |
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