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[Performance optimization of property-improved biodiesel manufacturing process coupled with butanol extractive
Longyun Zhang1, Ying Yang, Zhongping Shi
1Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China.
Summary
This study optimized biodiesel manufacturing coupled with acetone-butanol (AB) fermentation, using waste cooking oil biodiesel as an extractant. This process improves biodiesel quality and butanol yield while reducing energy consumption.
Area of Science:
- Biotechnology
- Chemical Engineering
- Sustainable Chemistry
Context:
- Traditional acetone-butanol (AB) fermentation suffers from low product concentrations, necessitating energy-intensive recovery.
- Waste cooking oil is an abundant, underutilized feedstock for biodiesel production.
Purpose:
- To optimize a coupled process of biodiesel manufacturing and AB extractive fermentation.
- To improve biodiesel quality and butanol yield while minimizing energy consumption and waste.
Summary:
- The study investigated the effects of biodiesel/broth ratio, supernatant recycle, and electronic carriers in a coupled fermentation-extraction process.
- Optimized conditions enhanced biodiesel cetane value from 51.4 to 54.4 and achieved an 18% actual butanol yield.
- A waste supernatant recycle ratio exceeding 50% was demonstrated.
Impact:
- Potential for eliminating energy-intensive product recovery in AB fermentation.
- Facilitates achievement of state-level energy-saving and waste minimization industrial production goals.
- Offers a sustainable route for biofuel production from waste resources.
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