Red mud enhanced hydrogen production from pyrolysis of deep-dewatered sludge cakes conditioned with Fenton's reagent and red mud
| Autor: | Nan Ye, Chao Li, Jiakuan Yang, Wenbo Yu, Xu Wu, Yafei Shi, Jiukun Hu, Huijie Hou, Xinyu Xu, Jun Xiao, Jian Song, Sha Liang, Bo Xiao, Jingping Hu, Guan Ruonan |
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| Rok vydání: | 2016 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry Energy Engineering and Power Technology Tar 02 engineering and technology 010501 environmental sciences 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Red mud chemistry.chemical_compound Fuel Technology Reagent Organic chemistry Char 0210 nano-technology Pyrolysis Fenton's reagent Sludge 0105 earth and related environmental sciences Nuclear chemistry Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 41:16762-16771 |
| ISSN: | 0360-3199 |
| Popis: | This study investigated the pyrolytic performances of deep-dewatered sludge cakes which were previously conditioned with Fenton's reagent and red mud. The pyrolytic products, including fuel gas, tar and solid char, were characterized by GC, GC-MS and FTIR. The results showed that pyrolysis of sludge cakes conditioned with Fenton's reagent and red mud produced more gas, especially higher H2 yield, compared with pyrolysis of raw sludge. In addition, red mud promoted PAHs formation and tar re-formation through side-chain-cleaving, dehydrogenation, polycondensation and aromatization of hydrocarbon during the pyrolysis, resulting in enhancement of the H2 yield. The sharp decrease in the absorbance of C Haromatic group of chars from the conditioned cakes implied that red mud could intensify the cracking and re-formation of aromatics. The higher the iron oxide content in red mud was, the better catalytic efficiency in the decomposition of organics and tar re-formation was, which led to more H2 production. |
| Databáze: | OpenAIRE |
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