Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery

Water resources are very important to sustain life. However, these resources have been subjected to stress due to population growth, economic and industrial growth, pollution and climate change. With these, the recovery of water from sources such as wastewater, dirty water, floodwater and seawater i...

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Main Authors: Dang, Ngan T. B., Patacsil, Liza B., Orbecido, Aileen H., Eusebio, Ramon Christian P., Beltran, Arnel B.
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Published: Animo Repository 2018
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spelling oai:animorepository.dlsu.edu.ph:faculty_research-31002021-08-16T06:38:17Z Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery Dang, Ngan T. B. Patacsil, Liza B. Orbecido, Aileen H. Eusebio, Ramon Christian P. Beltran, Arnel B. Water resources are very important to sustain life. However, these resources have been subjected to stress due to population growth, economic and industrial growth, pollution and climate change. With these, the recovery of water from sources such as wastewater, dirty water, floodwater and seawater is a sustainable alternative. The potential of recovering water from these sources could be done by utilizing forward osmosis, a membrane process that exploits the natural osmotic pressure gradient between solutions which requires low energy operation. This study evaluated the potential of forward osmosis (FO) composite membranes fabricated from bacterial cellulose (BC) and modified with sodium alginate. The membranes were evaluated for water flux and salt rejection. The effect of alginate concentrations and impregnation temperatures were evaluated using 0.6 M sodium chloride solution as feed and 2 M glucose solution as the draw solution. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and Contact Angle Meter (CAM). The use of sodium alginate in BC membrane showed a thicker membrane (38.3 μm to 67.6 μm), denser structure (shown in the SEM images), and more hydrophilic (contact angle ranges from 28.39° to 32.97°) compared to the pristine BC membrane (thickness = 12.8 μm and contact angle = 66.13°). Furthermore, the alginate modification lowered the water flux of the BC membrane from 9.283 L/m2-h (LMH) to value ranging from 2.314 to 4.797 LMH but the improvement in salt rejection was prominent (up to 98.57%). © 2018 Penerbit UTM Press. All rights reserved. 2018-01-01T08:00:00Z text text/html https://animorepository.dlsu.edu.ph/faculty_research/2101 https://animorepository.dlsu.edu.ph/context/faculty_research/article/3100/type/native/viewcontent Faculty Research Work Animo Repository Water—Purification Osmosis Chemical Engineering
institution De La Salle University
building De La Salle University Library
continent Asia
country Philippines
Philippines
content_provider De La Salle University Library
collection DLSU Institutional Repository
topic Water—Purification
Osmosis
Chemical Engineering
spellingShingle Water—Purification
Osmosis
Chemical Engineering
Dang, Ngan T. B.
Patacsil, Liza B.
Orbecido, Aileen H.
Eusebio, Ramon Christian P.
Beltran, Arnel B.
Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
description Water resources are very important to sustain life. However, these resources have been subjected to stress due to population growth, economic and industrial growth, pollution and climate change. With these, the recovery of water from sources such as wastewater, dirty water, floodwater and seawater is a sustainable alternative. The potential of recovering water from these sources could be done by utilizing forward osmosis, a membrane process that exploits the natural osmotic pressure gradient between solutions which requires low energy operation. This study evaluated the potential of forward osmosis (FO) composite membranes fabricated from bacterial cellulose (BC) and modified with sodium alginate. The membranes were evaluated for water flux and salt rejection. The effect of alginate concentrations and impregnation temperatures were evaluated using 0.6 M sodium chloride solution as feed and 2 M glucose solution as the draw solution. The membranes were characterized by Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and Contact Angle Meter (CAM). The use of sodium alginate in BC membrane showed a thicker membrane (38.3 μm to 67.6 μm), denser structure (shown in the SEM images), and more hydrophilic (contact angle ranges from 28.39° to 32.97°) compared to the pristine BC membrane (thickness = 12.8 μm and contact angle = 66.13°). Furthermore, the alginate modification lowered the water flux of the BC membrane from 9.283 L/m2-h (LMH) to value ranging from 2.314 to 4.797 LMH but the improvement in salt rejection was prominent (up to 98.57%). © 2018 Penerbit UTM Press. All rights reserved.
format text
author Dang, Ngan T. B.
Patacsil, Liza B.
Orbecido, Aileen H.
Eusebio, Ramon Christian P.
Beltran, Arnel B.
author_facet Dang, Ngan T. B.
Patacsil, Liza B.
Orbecido, Aileen H.
Eusebio, Ramon Christian P.
Beltran, Arnel B.
author_sort Dang, Ngan T. B.
title Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
title_short Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
title_full Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
title_fullStr Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
title_full_unstemmed Evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
title_sort evaluation of bacterial cellulose-sodium alginate forward osmosis membrane for water recovery
publisher Animo Repository
publishDate 2018
url https://animorepository.dlsu.edu.ph/faculty_research/2101
https://animorepository.dlsu.edu.ph/context/faculty_research/article/3100/type/native/viewcontent
_version_ 1709757384586428416