Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Biocatalytic membrane with acylase stabilized on intact carbon nanotubes for effective antifouling via quorum quenching

Authors
Kim, Tae HeeLee, InseonYeon, Kyung-MinKim, Jungbae
Issue Date
15-5월-2018
Publisher
ELSEVIER SCIENCE BV
Keywords
Biofouling; Biocatalytic membrane; Quorum quenching; Nanobiocatalysis; Polydopamine coatings
Citation
JOURNAL OF MEMBRANE SCIENCE, v.554, pp.357 - 365
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF MEMBRANE SCIENCE
Volume
554
Start Page
357
End Page
365
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/75538
DOI
10.1016/j.memsci.2018.03.020
ISSN
0376-7388
Abstract
This study developed biocatalytic membranes that can effectively control the surface biofouling based on the enzymatic quenching of bacterial quorum sensing. Acylase (AC) was immobilized and stabilized on intact carbon nanotubes (CNTs) via enzyme adsorption, precipitation, and crosslinking (EAPC) method, maintaining 66% of its initial enzyme activity for 200 days under rigorous shaking (200 rpm). This highly stable EAPC was anchored on the polyvinylidene fluoride (PVDF) microfilter using polydopamine coatings (EAPC membrane). The antifouling performance and mechanism of EAPC membrane was intensively evaluated under static incubation with a model bacterium of Pseudomonas aeruginosa. When compared with the PVDF membranes with and without free AC, the EAPC membrane enhanced the water permeability by 5-folds at an optimum loading of 0.40 g-CNTs/m(2) by effectively inhibiting the biofilm formation. The EAPC membrane with this optimal CNT loading did not increase the hydraulic resistance of membrane itself. In the lab-scale continuous filtrations, the EAPC membrane with its loading of 0.40 g-CNTs//m(2) demonstrated 1.6-fold delay of trans-membrane pressure increase compared to the PVDF membrane. It is anticipated that biocatalytic membrane based on quorum quenching nanobiocatalysis has a great potential in antifouling applications without changing the process configuration or additional treatments.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Kim, Jung bae photo

Kim, Jung bae
공과대학 (화공생명공학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE