中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
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
DOI10.1016/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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