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Comparison of Biobutanol Production Pathways via Acetone-Butanol-Ethanol Fermentation Using a Sustainability
Samir I Meramo-Hurtado1, Ángel D González-Delgado2, Lars Rehmann3
1Bussines Management and Productivity Research Group, Industrial Engineering Program, Fundación Universitaria Colombo International, Av. Pedro Heredia Sector Cuatro Vientos #31-50, Cartagena 130000, Colombia.
ACS Omega
|August 11, 2020
Summary
This study compared two methods for producing butanol from cassava waste. Topology 2 is a more sustainable design, offering higher economic and safety scores, making it preferable for butanol production.
Area of Science:
- Chemical Engineering
- Sustainable Process Design
- Biomass Valorization
Background:
- Sustainability integration in chemical processes is increasingly critical.
- Process analysis techniques and indicators are used for facility assessment.
- Butanol production from biomass offers a renewable alternative to fossil fuels.
Purpose of the Study:
- To conduct a comprehensive sustainability assessment of two butanol production process designs.
- To evaluate economic, environmental, safety, and exergy parameters for each topology.
- To determine the most sustainable process for butanol production from cassava waste.
Main Methods:
- Process modeling using Aspen Plus software for two distinct topologies.
- Evaluation using seven technical indicators: ROI, payback period, GWP, renewability index, safety index, exergy efficiency, and waste exergy ratio.
- Implementation of an aggregate index for overall sustainability performance comparison.
Main Results:
- Topology 2 produced a higher butanol yield (367,037 t/y) compared to Topology 1 (316,477 t/y).
- Both processes utilized 3,131,439 t/y of cassava biomass.
- Topology 2 showed superior economic, safety, and exergetic performance indicators.
Conclusions:
- Topology 2 demonstrates a more sustainable design for butanol production from cassava waste.
- The aggregate sustainability scores were 0.48 for Topology 1 and 0.53 for Topology 2.
- Process design choices significantly impact overall sustainability in biomass-derived chemical production.
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