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Tytuł pozycji:

Optimization of membrane modification using SiO 2 for robust anti-fouling performance with calcium-humic acid feed in membrane distillation.

Tytuł:
Optimization of membrane modification using SiO 2 for robust anti-fouling performance with calcium-humic acid feed in membrane distillation.
Autorzy:
Khan AA; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
Khan IA; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
Siyal MI; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
Lee CK; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea; Research Engineering Development Inc., 488 Maesohol-ro, Michuhol-gu, Incheon 22223, Republic of Korea.
Kim JO; Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea. Electronic address: .
Źródło:
Environmental research [Environ Res] 2019 Mar; Vol. 170, pp. 374-382. Date of Electronic Publication: 2018 Dec 18.
Typ publikacji:
Journal Article; Research Support, Non-U.S. Gov't
Język:
English
Imprint Name(s):
Publication: <2000- > : Amsterdam : Elsevier
Original Publication: New York, Academic Press.
MeSH Terms:
Distillation*
Water Purification*
Silicon Dioxide/*metabolism
Calcium ; Humic Substances ; Membranes ; Membranes, Artificial
Contributed Indexing:
Keywords: Anti-fouling; Polyethersulfone membrane; Response surface methodology; Silica nanoparticles; Superhydrophobicity
Substance Nomenclature:
0 (Humic Substances)
0 (Membranes, Artificial)
7631-86-9 (Silicon Dioxide)
SY7Q814VUP (Calcium)
Entry Date(s):
Date Created: 20190110 Date Completed: 20191218 Latest Revision: 20191218
Update Code:
20240104
DOI:
10.1016/j.envres.2018.12.036
PMID:
30623884
Czasopismo naukowe
The goal of this study was to prepare a robust anti-wetting and anti-fouling polyethersulfone (PES) membrane for the rejection of a highly saline (NaCl and CaCl 2 ·2H 2 O) feed solution containing humic acid (HA) in direct contact membrane distillation (DCMD). Response surface methodology (RSM) was used to determine the optimum formulation of the used materials. The variable factors selected were polydimethyl siloxane (PDMS) and silica (SiO 2 ); liquid entry pressure (LEP) and contact angle (CA) were selected as responses. Scanning electron microscopy (SEM) analysis confirmed the SiO 2 deposition and Fourier-transform infrared spectroscopy (FTIR) test evidenced the new functional groups i.e., Si-OH, siloxane, and C-F bond vibrations at 3446, 1099 cm -1 , and 1150-1240 cm -1 respectively on the membrane surface. The average roughness (Ra) was increased four times for the coated membranes (0.202-0.242 µm) as compared to that for pristine PES membrane (0.053 µm). The optimum PES-13 membrane exhibited consistent flux of 12 LMH and salt rejection (> 99%) with anti-fouling characteristic in DCMD using the feed solution of 3.5 wt% NaCl + 10 mM CaCl 2 ·2H 2 O + 10 mg L -1 HA. The PES-13 membrane may therefore be a key membrane for application in DCMD against CaCl 2 ·2H 2 O-containing salty solutions with HA.
(Copyright © 2018 Elsevier Inc. All rights reserved.)

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