Development of Metal Ion Absorbing Filter Using Cellulose Nanofibrils

Ji Young Lee; Eun Hea Kim; Tae Ung Park; Hae Min Jo; Chul Hwan Kim; Joon Pyo Jeun

doi:10.7584/JKTAPPI.2017.06.49.3.95

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Development of Metal Ion Absorbing Filter Using Cellulose Nanofibrils 셀룰로오스 나노섬유를 이용한 금속이온 흡착필터 개발

30 June 2017. pp. 95-101

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Abstract

Many studies have shown that CNFs are useful for the production of sheet-type materials, including film, filters, and so on. There are many advantages to the use of CNFs in the filter industry, however, filters made from only CNFs cannot be widely used as water treatment filters, due to their hydrophilic behavior. As a result, a new design of CNF water treatment filters must be developed. In this study, we made a metal ion adsorbing filter made from two types of CNFs: chemically untreated CNF and carboxymethylated CNF. The new CNF filter was composed of two layers; the top layer was made from CNF with PAE, and the bottom layer was made from carboxymethylated CNF. The role of the top layer of the CNF filter was to improve the wet strength of the CNF filter and the bottom layer was designed to adsorb metal ions due to the high negative zeta-potential of carboxymethylation. The CNF filter was produced by vacuum filtration and the use of two types of CNF slurries. Also, the capacity to remove Fe ions from water was analyzed by high pressure filtration experiments with a 1,000 ppm concentration of the Fe standard solution. The CNF filter removed Fe ions in the water by adsorbing them, and it did not break during the high pressure filtration experiments. Therefore, we concluded that the new CNF filter can be used as a filter for the removal of heavy metal ions in water.

Keywords

Cellulose nanofibril

filter

carboxymethylation

metal ion

filtration

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 49
No :3
Pages :95-101
Received Date : 2017-06-17
Revised Date : 2017-06-21
Accepted Date : 2017-06-22
DOI :https://doi.org/10.7584/JKTAPPI.2017.06.49.3.95

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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Literature Cited