Study on fermentation kinetics and extraction process of rhamnolipid production by papermaking wastewater

2017 3rd International Conference on Environmental Science and Material Application

生态环境科学;材料科学

Yu, Keer^1

School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou

310012, China^1

关键词: Fermentation dynamics;    Fermentation kinetics;    Fermentation process;    Industrial extraction;    Paper mill wastewater;    Papermaking wastewater;    Pseudomonas aeruginosa;    Pulp and papermaking;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/108/4/042119/pdf
DOI  :  10.1088/1755-1315/108/4/042119

来源: IOP

【 摘 要 】

Paper mill wastewater (PMW) is the outlet water generated during pulp and papermaking process in the paper industry. Fermentation by wastewater can lower the cost of production as well as alleviate the pressure of wastewater treatment. Rhamnolipids find broad placations as natural surfactants. This paper studied the rhamnolipids fermentation by employing Pseudomonas aeruginosa isolated by the laboratory, and determined to use wastewater which filtered by medium speed filter paper and strain Z2, the culture conditions were optimized, based on the flask shaking fermentation. On the basis of 5L tank fermentation, batch fermentation was carried out, the yield of fermentation reached 7.067g/L and the fermentation kinetics model of cell growth, product formation and substrate consumption was established by using origin software, and the fermentation process could be simulated well. And studied on the extraction process of rhamnolipids, through fermentation dynamic equation analysis can predict the in fill material yield can be further improved. Research on the extraction process of rhamnolipid simplifies the operation of extraction, and lays the foundation for the industrial extraction.