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Modelling of air gap membrane distillation and its application in heavy metals removal

Hadi Attia, Muhammad S. Osman, Daniel Johnson Orcid Logo, Chris Wright, Nidal Hilal, Christopher Wright Orcid Logo

Desalination, Volume: 424, Pages: 27 - 36

Swansea University Authors: Daniel Johnson Orcid Logo, Nidal Hilal, Christopher Wright Orcid Logo

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DOI (Published version): 10.1016/j.desal.2017.09.027

Abstract

In the present study, theoretical and experimental investigations were carried out to examine the effect of changing the operating parameters of an air gap membrane distillation (AGMD) system on the performance of electrospun and commercial membranes. These parameters include feed, cooling water tem...

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Published in: Desalination
ISSN: 00119164
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa35638
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first_indexed 2017-09-26T13:00:54Z
last_indexed 2020-06-02T18:49:40Z
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spelling 2020-06-02T15:25:42.8727823 v2 35638 2017-09-26 Modelling of air gap membrane distillation and its application in heavy metals removal 4bdcc306062428d2715b0dd308cc092f 0000-0001-6921-0389 Daniel Johnson Daniel Johnson true false 3acba771241d878c8e35ff464aec0342 Nidal Hilal Nidal Hilal true false 235e125ac3463e2ee7fc98604bf879ce 0000-0003-2375-8159 Christopher Wright Christopher Wright true false 2017-09-26 In the present study, theoretical and experimental investigations were carried out to examine the effect of changing the operating parameters of an air gap membrane distillation (AGMD) system on the performance of electrospun and commercial membranes. These parameters include feed, cooling water temperature and feed flow rate. Analytical models were used, with the aid of MATLAB, to predict the permeate flux of AGMD based on heat and mass transfer. Heat transfer was used to predict the temperature on the membrane surface on the feed side and the thin film layer in the cooling plate on the air gap side, which was used later to calculate the vapour pressure and the permeate flux. The molecular diffusion model corresponded well with the experimental measurements in terms of predicting the permeate flux by varying the feed temperature, whilst it was poor in term of coolant temperature and feed flow rate. The results also illustrate that high rejection rates of around 99% of heavy metals can be achieved by using superhydrophobic electrospun membranes. The electrospun membrane flux increased with increasing feed tank temperature and flow rate while it was reduced with an increase of cooling line temperature. Journal Article Desalination 424 27 36 00119164 Air gap membrane distillation, Experimental and theoretical studies, Superhydrophobic membrane, Heat and mass balance. 15 12 2017 2017-12-15 10.1016/j.desal.2017.09.027 COLLEGE NANME COLLEGE CODE Swansea University 2020-06-02T15:25:42.8727823 2017-09-26T06:23:10.8346858 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Hadi Attia 1 Muhammad S. Osman 2 Daniel Johnson 0000-0001-6921-0389 3 Chris Wright 4 Nidal Hilal 5 Christopher Wright 0000-0003-2375-8159 6 0035638-26092017062554.pdf AttiaAccepted.pdf 2017-09-26T06:25:54.5270000 Output 969022 application/pdf Accepted Manuscript true 2018-09-29T00:00:00.0000000 true eng
title Modelling of air gap membrane distillation and its application in heavy metals removal
spellingShingle Modelling of air gap membrane distillation and its application in heavy metals removal
Daniel Johnson
Nidal Hilal
Christopher Wright
title_short Modelling of air gap membrane distillation and its application in heavy metals removal
title_full Modelling of air gap membrane distillation and its application in heavy metals removal
title_fullStr Modelling of air gap membrane distillation and its application in heavy metals removal
title_full_unstemmed Modelling of air gap membrane distillation and its application in heavy metals removal
title_sort Modelling of air gap membrane distillation and its application in heavy metals removal
author_id_str_mv 4bdcc306062428d2715b0dd308cc092f
3acba771241d878c8e35ff464aec0342
235e125ac3463e2ee7fc98604bf879ce
author_id_fullname_str_mv 4bdcc306062428d2715b0dd308cc092f_***_Daniel Johnson
3acba771241d878c8e35ff464aec0342_***_Nidal Hilal
235e125ac3463e2ee7fc98604bf879ce_***_Christopher Wright
author Daniel Johnson
Nidal Hilal
Christopher Wright
author2 Hadi Attia
Muhammad S. Osman
Daniel Johnson
Chris Wright
Nidal Hilal
Christopher Wright
format Journal article
container_title Desalination
container_volume 424
container_start_page 27
publishDate 2017
institution Swansea University
issn 00119164
doi_str_mv 10.1016/j.desal.2017.09.027
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
document_store_str 1
active_str 0
description In the present study, theoretical and experimental investigations were carried out to examine the effect of changing the operating parameters of an air gap membrane distillation (AGMD) system on the performance of electrospun and commercial membranes. These parameters include feed, cooling water temperature and feed flow rate. Analytical models were used, with the aid of MATLAB, to predict the permeate flux of AGMD based on heat and mass transfer. Heat transfer was used to predict the temperature on the membrane surface on the feed side and the thin film layer in the cooling plate on the air gap side, which was used later to calculate the vapour pressure and the permeate flux. The molecular diffusion model corresponded well with the experimental measurements in terms of predicting the permeate flux by varying the feed temperature, whilst it was poor in term of coolant temperature and feed flow rate. The results also illustrate that high rejection rates of around 99% of heavy metals can be achieved by using superhydrophobic electrospun membranes. The electrospun membrane flux increased with increasing feed tank temperature and flow rate while it was reduced with an increase of cooling line temperature.
published_date 2017-12-15T03:44:24Z
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score 10.998252

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