Preparation of low-nitrogen chlorella based on proteolysis technology and pyrolysis characteristics of the products
文献类型:期刊论文
作者 | Ling, Qifan4; He, Sirong4; Babadi, Arman Amani4; Yuan, Chuan3,4; Pan, Cheng4; Jiang, Ding4; Cao, Bin2; Hu, Yamin4; Wang, Shuang4; Zheng, Anqing1![]() |
刊名 | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
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出版日期 | 2022-10-01 |
卷号 | 167页码:9 |
关键词 | Proteolysis Chlorella Nitrogen removal Alkaline protease Py-GC-MS |
ISSN号 | 0165-2370 |
DOI | 10.1016/j.jaap.2022.105630 |
通讯作者 | Wang, Shuang(alexjuven@ujs.edu.cn) ; Zheng, Anqing(zhengaq@ms.giec.ac.cn) |
英文摘要 | The high protein content in the microalgal biomass leads to the high relative content of nitrogen compounds in the pyrolysis oil, which hinders the efficient application of the microalgal pyrolysis oil. In this paper, a method for preparing low-nitrogen chlorella by using alkaline protease based on proteolysis technology was proposed to reduce the nitrogen content of chlorella, and its process conditions were optimized. The results showed that the maximum nitrogen removal rate and yield could reach 20.32% and 52.36 wt%, respectively. The thermal decomposition characteristics of Chlorella and low-nitrogen chlorella were analyzed by TG-DTG technology, and their main thermal decomposition were calculated by Coats-Redfern method. It was found that compared with Chlorella, the low-nitrogen Chlorella had a larger weight loss rate in main thermal decomposition stage and its average activation energy value reduced by 2.23 kJ/mol. The Py-GC-MS technology was further used to study the distribution of pyrolytic products of Chlorella and low-nitrogen Chlorella at 550 degrees C. It was found that the relative content of nitrogen compounds in pyrolytic products from low-nitrogen Chlorella was 43.02% lower than that of Chlorella. This is because that the proteolysis pretreatment has a significant effect on reducing the relative contents of some nitrogen compounds in bio-oil, such as pyridines, pyrroles and benzyl nitrile. Based on the above experimental results, a brief mechanism of proteolysis pretreatment on removing nitrogen compounds was proposed, mainly through the proteolytic process to reduce the relative content of various amino acids in Chlorella as precursors for the synthesis of nitrile and N-heterocyclic compounds in pyrolysis. In conclusion, proteolysis technology can effectively reduce the relative content of nitrogen compounds in pyrolysis compo-nents and improve the potential of microalgal pyrolysis oil as a high-quality alternative fuel. |
WOS关键词 | BIO-OIL ; HYDROTHERMAL LIQUEFACTION ; EXHAUST EMISSIONS ; CO-PYROLYSIS ; TG-FTIR ; MICROALGAE ; PROTEIN ; CARBOHYDRATE ; PERFORMANCE ; WASTE |
资助项目 | Natural Science Foundation of Jiangsu Province[BK20200894] |
WOS研究方向 | Chemistry ; Energy & Fuels ; Engineering |
语种 | 英语 |
WOS记录号 | WOS:000863278700001 |
出版者 | ELSEVIER |
资助机构 | Natural Science Foundation of Jiangsu Province |
源URL | [http://ir.giec.ac.cn/handle/344007/37518] ![]() |
专题 | 中国科学院广州能源研究所 |
通讯作者 | Wang, Shuang; Zheng, Anqing |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Jiangsu, Peoples R China 3.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Jiangsu, Peoples R China 4.Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Ling, Qifan,He, Sirong,Babadi, Arman Amani,et al. Preparation of low-nitrogen chlorella based on proteolysis technology and pyrolysis characteristics of the products[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,2022,167:9. |
APA | Ling, Qifan.,He, Sirong.,Babadi, Arman Amani.,Yuan, Chuan.,Pan, Cheng.,...&Zheng, Anqing.(2022).Preparation of low-nitrogen chlorella based on proteolysis technology and pyrolysis characteristics of the products.JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS,167,9. |
MLA | Ling, Qifan,et al."Preparation of low-nitrogen chlorella based on proteolysis technology and pyrolysis characteristics of the products".JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 167(2022):9. |
入库方式: OAI收割
来源:广州能源研究所
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