Enhanced butanol production by Clostridium acetobutylicum fermentation using thermo‐responsive poly( N ‐isopropylacrylamide)‐grafted PDMS sponge as adsorbent material

2019 ◽  
Vol 95 (1) ◽  
pp. 255-263
Author(s):  
Chin‐Hang Shu ◽  
Wei‐Lun Zou ◽  
Wa Ode Cakra Nirwana
Keyword(s):  
Clostridium Acetobutylicum ◽  
Butanol Production

Integrated ABE fermentation–adsorption process for enhanced butanol production by Clostridium acetobutylicum

2018 ◽  
Vol 44 ◽  
pp. S41
Author(s):  
F. Raganati ◽  
A. Procentese ◽  
G. Olivieri ◽  
M.E. Russo ◽  
P. Salatino ◽  
...  
Keyword(s):  
Clostridium Acetobutylicum ◽  
Adsorption Process ◽  
Abe Fermentation ◽  
Butanol Production

Dynamic Nonlinear Feedback Control Applied to Improve Butanol Production by Clostridium acetobutylicum

2017 ◽  
Vol 15 (6) ◽  
Author(s):  
H. I Velázquez-Sánchez ◽  
G. Lara-Cisneros ◽  
R. Femat ◽  
R. Aguilar-López
Keyword(s):  
Clostridium Acetobutylicum ◽  
Numerical Experiments ◽  
Closed Loop ◽  
Open Loop ◽  
Feedback Signal ◽  
Butanol Production ◽  
Nonlinear Feedback ◽  
Operational Conditions ◽  
Continuous Bioreactor ◽  
Control Scheme

Abstract The goal of this work is to present a closed-loop operational strategy in order to improve the butanol production in an anaerobic continuous bioreactor for the called Acetone-Butanol-Ethanol (ABE) process. The proposed control scheme considers a class of feedback signal which includes a nonlinear bounded function of the regulation error. The control scheme is applied to a phenomenological unstructured kinetic model obtained from an experimental and metabolic study of butanol production by Clostridium acetobutylicum, which allows the proposed structure to predict several operational conditions from batch and continuous regimes. Numerical experiments using the proposed model considering continuous operation were performed in order to find a feasible operating region for maximum butanol production at open-loop regime. The proposed methodology is applied to regulate the product concentration, manipulating the dilution rate to lead to a higher butanol productivity. The closed-loop behaviour of the bioreactor is analysed, finding that the proposed controller minimizes the response time of the system and allows it to achieve a productivity gain of 55 % over open-loop operation. Further numerical experiments show the satisfactory closed-loop performance of the proposed methodology in comparison with a PI controller.

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