Experimental study on a multi-stage air gap membrane distillation (AGMD) unit
Membrane distillation (MD) is a separation process that involves vapour transport through a hydrophobic membrane. The evaporation is caused by the partial pressure difference between a hot fluid and cold fluid/surface. In this study, an air gap MD (AGMD) process is utilized to produce freshwater fro...
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| Format: | Article |
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UTM Press
2014
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| Online Access: | http://irep.iium.edu.my/39101/ http://irep.iium.edu.my/39101/1/jurnal_teknologi.pdf |
| _version_ | 1848781723953790976 |
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| author | Bahar, Rubina Hawlader, Mohammad Nurul Alam Ng, K. C. Yee, Jiun Haw |
| author_facet | Bahar, Rubina Hawlader, Mohammad Nurul Alam Ng, K. C. Yee, Jiun Haw |
| author_sort | Bahar, Rubina |
| building | IIUM Repository |
| collection | Online Access |
| description | Membrane distillation (MD) is a separation process that involves vapour transport through a hydrophobic membrane. The evaporation is caused by the partial pressure difference between a hot fluid and cold fluid/surface. In this study, an air gap MD (AGMD) process is utilized to produce freshwater from saline solution. A multi-stage AGMD unit with 0.45 micro-m pore size Polyvinylidene Fluoride (PVDF) membranes is built and experiments have been carried out with different operating variables including feed temperature, coolant temperature, air gap width and feed inlet concentration. A maximum of 12.9 kg/m2 of distillate flux was obtained per kWh energy input from the multi-stage MD unit while for a previously built single-stage MD unit, the highest water/power ratio obtained was only 2.3 kg /m2 kWh. This variation indicates that multistaging is necessary for efficient energy use in MD system. |
| first_indexed | 2025-11-14T15:54:06Z |
| format | Article |
| id | iium-39101 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:54:06Z |
| publishDate | 2014 |
| publisher | UTM Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-391012017-09-06T07:38:55Z http://irep.iium.edu.my/39101/ Experimental study on a multi-stage air gap membrane distillation (AGMD) unit Bahar, Rubina Hawlader, Mohammad Nurul Alam Ng, K. C. Yee, Jiun Haw TD201 Water supply for domestic and industrial purposes TJ163.26 Energy conservation Membrane distillation (MD) is a separation process that involves vapour transport through a hydrophobic membrane. The evaporation is caused by the partial pressure difference between a hot fluid and cold fluid/surface. In this study, an air gap MD (AGMD) process is utilized to produce freshwater from saline solution. A multi-stage AGMD unit with 0.45 micro-m pore size Polyvinylidene Fluoride (PVDF) membranes is built and experiments have been carried out with different operating variables including feed temperature, coolant temperature, air gap width and feed inlet concentration. A maximum of 12.9 kg/m2 of distillate flux was obtained per kWh energy input from the multi-stage MD unit while for a previously built single-stage MD unit, the highest water/power ratio obtained was only 2.3 kg /m2 kWh. This variation indicates that multistaging is necessary for efficient energy use in MD system. UTM Press 2014-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/39101/1/jurnal_teknologi.pdf Bahar, Rubina and Hawlader, Mohammad Nurul Alam and Ng, K. C. and Yee, Jiun Haw (2014) Experimental study on a multi-stage air gap membrane distillation (AGMD) unit. Jurnal Teknologi, 69 (9). pp. 89-92. ISSN 2180–3722 (O), 0127–9696 (P) http://www.jurnalteknologi.utm.my/index.php/jurnalteknologi/issue/view/143 DOI: http://dx.doi.org/10.11113/jt.v69.3403 |
| spellingShingle | TD201 Water supply for domestic and industrial purposes TJ163.26 Energy conservation Bahar, Rubina Hawlader, Mohammad Nurul Alam Ng, K. C. Yee, Jiun Haw Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title | Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title_full | Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title_fullStr | Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title_full_unstemmed | Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title_short | Experimental study on a multi-stage air gap membrane distillation (AGMD) unit |
| title_sort | experimental study on a multi-stage air gap membrane distillation (agmd) unit |
| topic | TD201 Water supply for domestic and industrial purposes TJ163.26 Energy conservation |
| url | http://irep.iium.edu.my/39101/ http://irep.iium.edu.my/39101/ http://irep.iium.edu.my/39101/ http://irep.iium.edu.my/39101/1/jurnal_teknologi.pdf |