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Woldemariam, D., Kullab, A., Khan, E. U. & Martin, A. (2016). District heating-driven membrane distillation in industrial-scale bioethanol production: Techno economic study. In: : . Paper presented at THE 29TH INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS (pp. 1-15). University of Ljubljana
Open this publication in new window or tab >>District heating-driven membrane distillation in industrial-scale bioethanol production: Techno economic study
2016 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this study, membrane distillation integrated with district heating network has been investigated for applications in a bioethanol production plant. The specific application considered was recovery of ethanol from CO2 scrubber water, where the main objective of this study was to develop an air gap membrane distillation system that is driven by heat from district heating network, to offload the distillation column. Experiments on membrane distillation lab unit along with data from the industry were used to assess the technologic and economic feasibilities of this system. Comparisons were also made between the distillation columns and membrane distillation units in terms of heat demand and economic savings. Results of the study showed that MD can be a competitive technology for ethanol concentration depending on availability of low-grade heat like district heating or waste heat.

Place, publisher, year, edition, pages
University of Ljubljana, 2016. p. 15
Series
Proceedings of the 29th International Conference on Efficiency, Cost, Optimisation, Simulation and Environmental Impact of Energy Systems
Keywords
Membrane Distillation, District Heating, Energy Demand, Techno-Economy, Bioethanol, CO2 Scrubber
National Category
Engineering and Technology
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-189860 (URN)978-961-6980-15-9 (ISBN)
Conference
THE 29TH INTERNATIONAL CONFERENCE ON EFFICIENCY, COST, OPTIMIZATION, SIMULATION AND ENVIRONMENTAL IMPACT OF ENERGY SYSTEMS
Note

QC 20160727

Available from: 2016-07-19 Created: 2016-07-19 Last updated: 2016-11-30Bibliographically approved
Woldemariam, D., Kullab, A. & Martin, A. (2016). Membrane distillation pilot plant trials with pharmaceutical residues and energy demand analysis. Chemical Engineering Journal, 306, 471-483
Open this publication in new window or tab >>Membrane distillation pilot plant trials with pharmaceutical residues and energy demand analysis
2016 (English)In: Chemical Engineering Journal, ISSN 1385-8947, E-ISSN 1873-3212, Vol. 306, p. 471-483Article in journal (Refereed) Published
Abstract [en]

In this study, an air gap membrane distillation (AGMD) system at pilot scale is applied for purification of effluent from a municipal wastewater treatment plant. A district heating network (DHN) is considered as a heat source for the membrane distillation system. Removal performance of pharmaceutical residuals, specific heat demand, and economic assessments were analyzed on the membrane distillation plant. Almost all targeted pharmaceutical compounds were removed to a very high degree, often below the method detection limit. The heat requirement for the MD process could be sufficiently supplied by the low-temperature district heating return line. Specific heat demands for the AGMD ranges from 692 to 875 kWh/m3 without heat recovery and as low as 105 kWh/m3 when heat recovery is possible. Different approaches to integrating the MD within the DHN system were analyzed; the advantages and shortcomings of each are discussed with emphasis on the MD system’s capacity requirement and annual heat demand. The thermoeconomic analyses from this study presented the potential for energy optimization regarding heat recovery and module design improvement of the current MD equipment.

Place, publisher, year, edition, pages
Elsevier, 2016
Keywords
Membrane distillation, District heating, Pharmaceutical residue, Heat demand, WWTP effluent water, Thermoeconomy
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-190074 (URN)10.1016/j.cej.2016.07.082 (DOI)000386420700052 ()2-s2.0-84979759255 (Scopus ID)
Funder
Swedish Environmental Protection Agency
Note

QC 21061118

Available from: 2016-08-04 Created: 2016-08-04 Last updated: 2017-11-28Bibliographically approved
Woldemariam, D., Martin, A., Martin, V. & Santarelli, M. (2014). Exergy, thermo-Economic Analysis, and Optimization of Air-gap Membrane Distillation System. In: : . Paper presented at IV International Scientific Conference on Pervaporation, Vapor Permeation and Membrane Distillation, 21-24 of September 2014. Torun, Poland
Open this publication in new window or tab >>Exergy, thermo-Economic Analysis, and Optimization of Air-gap Membrane Distillation System
2014 (English)Conference paper, Poster (with or without abstract) (Other academic)
Abstract [en]

Exergy and thermo-economic cost analysis are increasingly important tools for the evaluation of a desalination system’s performance and hence economic viability of the method for industrial or commercial applications. Membrane distillation (MD) is one important water desalination method that is still under development, not well established and not yet widely used in industries unlike reverse osmosis (RO). In this study, an exergetic and thermo-economic analysis for a large scale pilot plant air-gap membrane distillation system have been done. Experiments were carried out to get thermodynamic values of water streams. From the experimental data obtained and followed exergy analysis, it was found that the least exergetic efficiency (75%) was obtained for the feed. Maximum exergy efficiency was obtained for the hot side heat exchanger (98%) followed by the pumps. Thermo-economy of the MD water desalination under investigation was also analyzed and compared with other water desalination methods. Finally, the thermo-economic optimization for the MD system under consideration was investigated, and performance improvements were discussed.

Place, publisher, year, edition, pages
Torun, Poland: , 2014
Keywords
Exergy, membrane distillation, exergo-economy, exergy efficiency, thermoeconomy
National Category
Energy Systems
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-185007 (URN)
Conference
IV International Scientific Conference on Pervaporation, Vapor Permeation and Membrane Distillation, 21-24 of September 2014
Note

QC 20160411

Available from: 2016-04-08 Created: 2016-04-08 Last updated: 2016-12-05Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4369-9689

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