Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)

Forward osmosis (FO) membrane was fabricated from acetylated nata de coco (NDC). Acetylation of NDC was done by subjecting it to dissolution by 2 concentrations (1% and 2%) of methylene chloride for 72-hours prior to solvent evaporation to form the FO membrane. Membranes were characterized in terms...

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Main Authors: Alberto, Erika Louise A., De Ocampo, Ailey Nicole V., Depasupil, Christopere Ghil E., Ligaray, Mayzonee V., Eusebio, Ramon Christian P., Orbecido, Aileen H., Beltran, Arnel B., Patacsil, Liza Bautista
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Online Access:https://animorepository.dlsu.edu.ph/faculty_research/169
https://animorepository.dlsu.edu.ph/context/faculty_research/article/1168/type/native/viewcontent
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spelling oai:animorepository.dlsu.edu.ph:faculty_research-11682022-11-10T07:38:54Z Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose) Alberto, Erika Louise A. De Ocampo, Ailey Nicole V. Depasupil, Christopere Ghil E. Ligaray, Mayzonee V. Eusebio, Ramon Christian P. Orbecido, Aileen H. Beltran, Arnel B. Patacsil, Liza Bautista Forward osmosis (FO) membrane was fabricated from acetylated nata de coco (NDC). Acetylation of NDC was done by subjecting it to dissolution by 2 concentrations (1% and 2%) of methylene chloride for 72-hours prior to solvent evaporation to form the FO membrane. Membranes were characterized in terms of thickness, hydrophilicity, morphology, and tensile strength. A laboratory-scale FO system was used to test the performance of modified NDC FO membrane in desalination by determination of water flux, salt flux, and salt rejection. The FO system employs three kinds of feed solutions (deionized (DI) water, 0.6 M NaCl, and seawater) and 2M sucrose as draw solution. The water permeability coefficient was also determined. The dried unmodified NDC sheet was used as control to check if the modified NDC can function as FO membrane. The DI water fluxes of 1.19 L/m2-h (LMH) and 0.67 LMH were recorded for 1% and 2% modified-NDC membranes, respectively. These values are lower compared to the 6.24 LMH observed with the dried unmodified NDC sheet. Water fluxes of 0.6 M NaCl solution and seawater are similar for both 1% and 2% modified-NDC membranes that ranges from 0.51 to 0.56 LMH. High salt rejections were observed for all feed solutions ranging from 91% to 97.9%. The tensile strengths of the membranes are 54.30 and 117.88 N/mm2 for the 1% and 2% modified-NDC membrane, respectively. These suggest that the modified FO-NDC membrane is suitable for FO process. © 2019 Author(s). 2019-07-23T07:00:00Z text text/html https://animorepository.dlsu.edu.ph/faculty_research/169 https://animorepository.dlsu.edu.ph/context/faculty_research/article/1168/type/native/viewcontent Faculty Research Work Animo Repository Osmosis Saline water conversion 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 Osmosis
Saline water conversion
Chemical Engineering
spellingShingle Osmosis
Saline water conversion
Chemical Engineering
Alberto, Erika Louise A.
De Ocampo, Ailey Nicole V.
Depasupil, Christopere Ghil E.
Ligaray, Mayzonee V.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Beltran, Arnel B.
Patacsil, Liza Bautista
Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
description Forward osmosis (FO) membrane was fabricated from acetylated nata de coco (NDC). Acetylation of NDC was done by subjecting it to dissolution by 2 concentrations (1% and 2%) of methylene chloride for 72-hours prior to solvent evaporation to form the FO membrane. Membranes were characterized in terms of thickness, hydrophilicity, morphology, and tensile strength. A laboratory-scale FO system was used to test the performance of modified NDC FO membrane in desalination by determination of water flux, salt flux, and salt rejection. The FO system employs three kinds of feed solutions (deionized (DI) water, 0.6 M NaCl, and seawater) and 2M sucrose as draw solution. The water permeability coefficient was also determined. The dried unmodified NDC sheet was used as control to check if the modified NDC can function as FO membrane. The DI water fluxes of 1.19 L/m2-h (LMH) and 0.67 LMH were recorded for 1% and 2% modified-NDC membranes, respectively. These values are lower compared to the 6.24 LMH observed with the dried unmodified NDC sheet. Water fluxes of 0.6 M NaCl solution and seawater are similar for both 1% and 2% modified-NDC membranes that ranges from 0.51 to 0.56 LMH. High salt rejections were observed for all feed solutions ranging from 91% to 97.9%. The tensile strengths of the membranes are 54.30 and 117.88 N/mm2 for the 1% and 2% modified-NDC membrane, respectively. These suggest that the modified FO-NDC membrane is suitable for FO process. © 2019 Author(s).
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author Alberto, Erika Louise A.
De Ocampo, Ailey Nicole V.
Depasupil, Christopere Ghil E.
Ligaray, Mayzonee V.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Beltran, Arnel B.
Patacsil, Liza Bautista
author_facet Alberto, Erika Louise A.
De Ocampo, Ailey Nicole V.
Depasupil, Christopere Ghil E.
Ligaray, Mayzonee V.
Eusebio, Ramon Christian P.
Orbecido, Aileen H.
Beltran, Arnel B.
Patacsil, Liza Bautista
author_sort Alberto, Erika Louise A.
title Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
title_short Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
title_full Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
title_fullStr Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
title_full_unstemmed Desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
title_sort desalination performance of a forward osmosis membrane from acetylated nata de coco (bacterial cellulose)
publisher Animo Repository
publishDate 2019
url https://animorepository.dlsu.edu.ph/faculty_research/169
https://animorepository.dlsu.edu.ph/context/faculty_research/article/1168/type/native/viewcontent
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