dc.contributor.author | Xiao, N | |
dc.contributor.author | Luo, H | |
dc.contributor.author | Wei, W | |
dc.contributor.author | Tang, Z | |
dc.contributor.author | Hu, B | |
dc.contributor.author | Kong, L | |
dc.contributor.author | Sun, Y | |
dc.date.accessioned | 2017-10-31T04:05:30Z | |
dc.date.available | 2017-10-31T04:05:30Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 0165-2370 | |
dc.identifier.doi | 10.1016/j.jaap.2015.02.001 | |
dc.identifier.uri | http://hdl.handle.net/10072/172944 | |
dc.description.abstract | A novel microwave assisted gasification technique was developed whereby pyrolytic biochar obtained from rice straw was used as the feedstock. The conversion efficiencies and gas composition obtained at 800 °C by conventional heating method were similar to that obtained at 550 °C by microwave-assisted gasification. At 550 °C using microwave heating, the CO + H2 yields were over 90 vol.% and H2 content was 60 vol.%. The effects of alkali and alkaline earth metals (AAEM) on microwave-assisted gasification activity of biochar were also investigated. The results indicated that 5% K2CO3 and 5% KOH increased the carbon conversion efficiency from 74.39% to 79.95% and 85.04%, respectively, but CO2 content increased remarkably. Ca(OH)2 was a suitable gasification catalyst and excellent CO2 absorber. 10% Ca(OH)2 reduced CO2 percentage from 21.92 vol.% to 10.83 vol.% and shortened reaction time from 90 to 60 min. Based on the AAEM catalytic mechanisms and microwave heating function, the intermediate C(O) and dipole rotation of materials molecules played a crucial role in the microwave-assisted gasification of biochar. This study proves that microwave heating coupled with the addition of AAEM result in low-temperature microwave-assisted gasification of biochar. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Elsevier | |
dc.relation.ispartofpagefrom | 173 | |
dc.relation.ispartofpageto | 179 | |
dc.relation.ispartofjournal | Journal of Analytical and Applied Pyrolysis | |
dc.relation.ispartofvolume | 112 | |
dc.subject.fieldofresearch | Analytical chemistry | |
dc.subject.fieldofresearch | Analytical chemistry not elsewhere classified | |
dc.subject.fieldofresearch | Chemical engineering | |
dc.subject.fieldofresearchcode | 3401 | |
dc.subject.fieldofresearchcode | 340199 | |
dc.subject.fieldofresearchcode | 4004 | |
dc.title | Microwave-assisted gasification of rice straw pyrolytic biochar promoted by alkali and alkaline earth metals | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Tang, Zhiyong | |