Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Synergistic effects on co-pyrolysis of low-temperature hydrothermally pretreated high-protein microalgae and polypropylene | |
Lv, Xianchao1,2,3; Liu, Huacai1,2; Huang, Yanqin1,2,4 ; Yao, Jiagui1,2,3; Yuan, Hongyou1,2; Yin, Xiuli1,2; Wu, Chuangzhi1,2,3
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| 2021-02-01 | |
| Source Publication | ENERGY CONVERSION AND MANAGEMENT
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| ISSN | 0196-8904 |
| Volume | 229Pages:13 |
| Corresponding Author | Huang, Yanqin(huangyq@ms.giec.ac.cn) |
| Abstract | Protein-rich (58.50%) Chlorella sp. was hydrothermally pretreated at 175 degrees C to remove part of N, and the obtained solid residue (ChSR) was then co-pyrolyzed with polypropylene (PP) to reduce O content and improve biooil quality. About 48.25% of N was enriched into the aqueous phase during hydrothermal pretreatment (HTP) process, and about 15.70% of bio-oil with low N content (3.45%) was obtained. Compared with that of raw sample, the structure of ChSR was further aromatized as revealed by C-13 NMR analysis. The interaction between ChSR and PP was deeply investigated with the help of online TG-FTIR-MS and Py-GC/MS. The co-pyrolysis process of ChSR-PP blends was generally divided into two thermal decomposition stages. The first stage (150-400 degrees C) was mainly associated with decomposition of ChSR, while the second stage (400-550 degrees C) was the results of combination of thermal degradations of ChSR and PP, with the primary contribution from the degradation of PP. The addition of PP accelerated pyrolysis of ChSR and inhibited the release of C2H5O+/COOH+ and NH3 but promoted CO2 releasing at the first stage. However, ChSR delayed the pyrolysis of PP and prohibited release of H2 and light hydrocarbons (i.e., CH4, C2H2, C2H6, C3H7, and so on) from PP at the second stage. Kinetic analysis based on the Flynn-Wall-Ozawa (FWO) method revealed that the average activation energy (E) of the blends at the two decomposition stages were 159.10-164.12 kJ/kg and 194.20-219.86 kJ/kg, respectively. Results of Py-GC/MS indicated that, the synergistic effect between ChSR and PP significantly enhanced the formation of hydrocarbons (i.e., cyclohexane derivatives and 2,4-Dimethyl-1-heptene), and the interaction achieved maximum when the ratio of ChSR:PP was 80:20. The yields of O-containing compounds (alcohols, and phenols) and BTEXs (Benzene series) were decreased. It should be noted that both the amounts and kinds of N-heterocyclic compounds were decreased. Finally, the possible mechanism on interaction between ChSR and PP was also proposed. This work will provide useful information on better utilization of high-protein microalgae. |
| Keyword | High-protein microalgae Polypropylene Hydrothermal pretreatment Co-pyrolysis Synergistic effect |
| DOI | 10.1016/j.enconman.2020.113772 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51776207] ; Dalian National Laboratory for Clean Energy (DNL) Cooperation Fund ; CAS[DNL 180306] ; Natural Science Foundation of Guangdong Province, China[2019A1515011535] ; Science and Technology Program of Guangzhou, China[201804010153] |
| WOS Research Area | Thermodynamics ; Energy & Fuels ; Mechanics |
| Funding Organization | National Natural Science Foundation of China ; Dalian National Laboratory for Clean Energy (DNL) Cooperation Fund ; CAS ; Natural Science Foundation of Guangdong Province, China ; Science and Technology Program of Guangzhou, China |
| WOS Subject | Thermodynamics ; Energy & Fuels ; Mechanics |
| WOS ID | WOS:000614050500006 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/32666 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Huang, Yanqin |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 10049, Peoples R China 4.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Lv, Xianchao,Liu, Huacai,Huang, Yanqin,et al. Synergistic effects on co-pyrolysis of low-temperature hydrothermally pretreated high-protein microalgae and polypropylene[J]. ENERGY CONVERSION AND MANAGEMENT,2021,229:13. |
| APA | Lv, Xianchao.,Liu, Huacai.,Huang, Yanqin.,Yao, Jiagui.,Yuan, Hongyou.,...&Wu, Chuangzhi.(2021).Synergistic effects on co-pyrolysis of low-temperature hydrothermally pretreated high-protein microalgae and polypropylene.ENERGY CONVERSION AND MANAGEMENT,229,13. |
| MLA | Lv, Xianchao,et al."Synergistic effects on co-pyrolysis of low-temperature hydrothermally pretreated high-protein microalgae and polypropylene".ENERGY CONVERSION AND MANAGEMENT 229(2021):13. |
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