Urban biowaste for solid fuel production: Waste suitability assessment and experimental carbonization in Dar es Salaam, Tanzania

Simple item page
dc.contributor.authorLohri, Christian R.
dc.contributor.authorFaraji, Adam
dc.contributor.authorEphata, Elia
dc.contributor.authorRajabu, Hassan
dc.contributor.authorZurbrĂĽgg, Christian
dc.date.accessioned2016-07-13T06:27:34Z
dc.date.available2016-07-13T06:27:34Z
dc.date.issued2015-02
dc.description.abstractThe poor state of solid waste management in Dar es Salaam (DSM), Tanzania, the large fraction of organic waste generated and a high charcoal consumption by city residents has triggered this research on carbonization of municipal biowaste. Char produced by the thermochemical conversion method of slow pyrolysis can be briquetted and used as cooking fuel alternative to wood-based charcoal. To explore the potential of biowaste carbonization in DSM, the most suitable organic wastes were selected and pyrolyzed in a simple, externally heated carbonization system developed as part of this study. A Multi-Criteria Analysis framework allowed to assess prevailing biowaste types regarding availability and accessibility, and respective suitability in terms of physical–chemical properties. The assessment, using data from a survey and lab analysis, revealed the following biowaste types with highest overall potential for char production in DSM: packaging grass/leaves (PG) used for transportation of fruit and vegetables to the markets, wood waste (WW) from wood workshops, and cardboard (CB) waste. Best practice carbonization of these biowastes in the pyrolyzer showed satisfactory char yields (PG: 38.7%; WW: 36.2%; CB: 35.7% on dry basis). Proximate composition (including volatile, fixed carbon and ash content) and heating value (PG: 20.1 MJ kg-1; WW: 29.4 MJ kg-1; CB: 26.7 MJ kg-1) of the produced char also compare well with literature data. The energy and emission-related aspects of the system still require further research and optimizations to allow financially viable and safe operatioen_US
dc.identifier.citationLohri, C.R., Faraji, A., Ephata, E., Rajabu, H.M. and ZurbrĂĽgg, C., 2015. Urban biowaste for solid fuel production: Waste suitability assessment and experimental carbonization in Dar es Salaam, Tanzania. Waste Management & Research, 33(2), pp.175-182.en_US
dc.identifier.doi10.1177/0734242X14564644
dc.identifier.urihttp://hdl.handle.net/20.500.11810/3160
dc.language.isoenen_US
dc.subjectBiocharen_US
dc.subjectCarbonizationen_US
dc.subjectEnergy recoveryen_US
dc.subjectMulti-criteria analysisen_US
dc.subjectOrganic solid wasteen_US
dc.subjectSlow pyrolysisen_US
dc.titleUrban biowaste for solid fuel production: Waste suitability assessment and experimental carbonization in Dar es Salaam, Tanzaniaen_US
dc.typeJournal Article, Peer Revieweden_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Urban biowaste for solid fuel production Waste suitability assessment and experimental carbonization in Dar es Salaam, Tanzania.pdf
Size:
5.06 MB
Format:
Adobe Portable Document Format
Description:
Full text
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Department of Mechanical and Industrial Engineering