首页 | 本学科首页   官方微博 | 高级检索  
     


Optimal exponential feeding strategy for dual-substrate biostimulation of phenol degradation using Cupriavidus taiwanensis
Authors:Bor-Yann Chen  Jun-Wei You  Jo-Shu Chang
Affiliation:1. Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 260, Taiwan;2. Department of Chemical Engineering, National Cheng-Kung University, Tainan 701, Taiwan;3. Sustainable Environment Research Center, National Cheng Kung University, Tainan 701, Taiwan
Abstract:The exponential feeding strategy (EFS) of dual substrates (i.e., phenol and glycerol) was applied to optimize the overall performance of phenol degradation by Cupriavidus taiwanensis R186. Addition of a second substrate (e.g., glycerol) could stimulate the phenol biodegradation efficiency of strain R186. Hence, a feasible EFS was developed for fed-batch phenol biodegradation using the dual-substrate biostimulation technique. The phenol degradation kinetics was well characterized with proposed model and response surface analysis. Our findings quantitatively revealed that glycerol could effectively enhance the phenol degradation performance, as the highest phenol degradation efficiency occurred with the supplementation of 0.8–1.2 g L−1 of glycerol. The optimal dual-substrate EFS was identified via contour analysis and kinetic modeling. With the optimal dual-substrate EFS (i.e., a feeding rate constant (α1 and α2) of 0.5 and 0.3, respectively), the shortest time (ca. 13.80 h) for phenol degradation was achieved with a specific growth rate of ca. 0.281 h−1.
Keywords:Cupriavidus taiwanensis   Dual substrate   Exponential feeding   Fed-batch culture   Phenol biodegradation
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号