Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue
Production of synthesis gas by gasification is still a challenge due to the tar in the synthesis gas (syngas). This tar needs to be eliminated by appropriate methods before using the syngas as a fuel. Moreover, the solid residue after gasification also needs to be properly managed or destroyed. Th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Penerbit Universiti Kebangsaan Malaysia
2020
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| Online Access: | http://journalarticle.ukm.my/15634/ http://journalarticle.ukm.my/15634/1/23.pdf |
| _version_ | 1848813846414753792 |
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| author | Sultan, Syed Haseeb Arkom Palamanit, Kua-anan Techato, Muhammad Amin, Ahmed, Khurshid Asadullah, |
| author_facet | Sultan, Syed Haseeb Arkom Palamanit, Kua-anan Techato, Muhammad Amin, Ahmed, Khurshid Asadullah, |
| author_sort | Sultan, Syed Haseeb |
| building | UKM Institutional Repository |
| collection | Online Access |
| description | Production of synthesis gas by gasification is still a challenge due to the tar in the synthesis gas (syngas). This tar needs
to be eliminated by appropriate methods before using the syngas as a fuel. Moreover, the solid residue after gasification
also needs to be properly managed or destroyed. Therefore, the aim of this study was to investigate tar and solid residue
generated by gasification of rubberwood biomass, including rubberwood chips (RWC), rubberwood pellets (RWP),
rubberwood unburned char (UBC), and their blends, in a downdraft gasifier. Waste vegetable oil (WVO) and water were
used as scrubbing media. Properties of the biomass samples were characterized by proximate and ultimate analysis,
as well as for the higher heating value. The downdraft gasifier was operated at 850 °C and equivalence ratio (ER) of
0.25. The concentrations of tar in syngas both before and after passing through the wet scrubber were determined.
Chemical compounds in the tar were analysed by GC-MS. The solid residue remaining after gasification was separated
into biochar and ash. The biochar was characterized by CHNS/O analyser, FTIR, SEM, and for the iodine number. The
compounds in ash were determined by XRF. The results show that biomass type and scrubbing media affected the tar
removal efficiency. Scrubbing syngas with WVO had better tar removal efficiency than scrubbing with water. The highest
tar removal efficiency with WVO was 82.16%. The tar sample consisted of complex compounds as indicated by GC-MS,
and these compounds depended on type of biomass feedstock. The solid residue obtained after gasification process
contained biochar (unburned carbon) and ash. Some biochars can be used as solid fuels, depending on carbon content
and energy content. The biochar also had a highly porous structure based on SEM imaging, and a high iodine number
(930-1134 mg/g). The biochar contained the functional groups OH, C-O, and C-H, as indicated by FTIR. CaO, K2
O, SiO2
,
and MgO were the major components in ash. The spent WVO, biochar, and ash need to be properly managed or utilized
for sustainable gasification operations, and these results support that pursuit. |
| first_indexed | 2025-11-15T00:24:41Z |
| format | Article |
| id | oai:generic.eprints.org:15634 |
| institution | Universiti Kebangasaan Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T00:24:41Z |
| publishDate | 2020 |
| publisher | Penerbit Universiti Kebangsaan Malaysia |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:generic.eprints.org:156342020-11-11T16:52:42Z http://journalarticle.ukm.my/15634/ Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue Sultan, Syed Haseeb Arkom Palamanit, Kua-anan Techato, Muhammad Amin, Ahmed, Khurshid Asadullah, Production of synthesis gas by gasification is still a challenge due to the tar in the synthesis gas (syngas). This tar needs to be eliminated by appropriate methods before using the syngas as a fuel. Moreover, the solid residue after gasification also needs to be properly managed or destroyed. Therefore, the aim of this study was to investigate tar and solid residue generated by gasification of rubberwood biomass, including rubberwood chips (RWC), rubberwood pellets (RWP), rubberwood unburned char (UBC), and their blends, in a downdraft gasifier. Waste vegetable oil (WVO) and water were used as scrubbing media. Properties of the biomass samples were characterized by proximate and ultimate analysis, as well as for the higher heating value. The downdraft gasifier was operated at 850 °C and equivalence ratio (ER) of 0.25. The concentrations of tar in syngas both before and after passing through the wet scrubber were determined. Chemical compounds in the tar were analysed by GC-MS. The solid residue remaining after gasification was separated into biochar and ash. The biochar was characterized by CHNS/O analyser, FTIR, SEM, and for the iodine number. The compounds in ash were determined by XRF. The results show that biomass type and scrubbing media affected the tar removal efficiency. Scrubbing syngas with WVO had better tar removal efficiency than scrubbing with water. The highest tar removal efficiency with WVO was 82.16%. The tar sample consisted of complex compounds as indicated by GC-MS, and these compounds depended on type of biomass feedstock. The solid residue obtained after gasification process contained biochar (unburned carbon) and ash. Some biochars can be used as solid fuels, depending on carbon content and energy content. The biochar also had a highly porous structure based on SEM imaging, and a high iodine number (930-1134 mg/g). The biochar contained the functional groups OH, C-O, and C-H, as indicated by FTIR. CaO, K2 O, SiO2 , and MgO were the major components in ash. The spent WVO, biochar, and ash need to be properly managed or utilized for sustainable gasification operations, and these results support that pursuit. Penerbit Universiti Kebangsaan Malaysia 2020-07 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/15634/1/23.pdf Sultan, Syed Haseeb and Arkom Palamanit, and Kua-anan Techato, and Muhammad Amin, and Ahmed, Khurshid and Asadullah, (2020) Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue. Sains Malaysiana, 49 (7). pp. 1729-1743. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid49bil7_2020/KandunganJilid49Bil7_2020.html |
| spellingShingle | Sultan, Syed Haseeb Arkom Palamanit, Kua-anan Techato, Muhammad Amin, Ahmed, Khurshid Asadullah, Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title | Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title_full | Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title_fullStr | Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title_full_unstemmed | Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title_short | Syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| title_sort | syngas production from rubberwood biomass in downdraft gasifier combined with wet scrubbing: investigation of tar and solid residue |
| url | http://journalarticle.ukm.my/15634/ http://journalarticle.ukm.my/15634/ http://journalarticle.ukm.my/15634/1/23.pdf |