Search tag: "ethanol" (remove)
Evaluation of the environmental performance of bioethanol from cassava pulp using life cycle assessment
This study assesses the environmental impact of bioethanol from cassava pulp as transport fuel. Optimal scenarios include biogas use for steam and economic pulp allocation. Ethanol outperforms gasoline in greenhouse gas reduction, with E85 yielding the highest savings. Despite E85's negative effects on certain aspects, its overall impact remains lower than gasoline.
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- March 23, 2024
Single-step ethanol production from raw cassava starch using a combination of raw starch hydrolysis and fermentation, scale-up from 5-L laboratory and 200-L pilot plant to 3000-L industrial fermenters
This research focuses on single-step ethanol production by combining raw cassava starch hydrolysis and fermentation. It aims to optimize conditions for this process, achieving high yields across laboratory, pilot, and industrial scales. Ethanol concentrations obtained rival those from commercial industries using molasses and hydrolyzed starch, demonstrating feasibility and scalability.
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- March 23, 2024
Impacts of climate change on cassava yield and lifecycle energy and greenhouse gas performance of cassava ethanol systems: An example from Guangxi Province, China
Climate change threatens bio-crop viability. Studying cassava-to-ethanol in Guangxi, China, a model predicts yield declines due to temperature rises. Life cycle analysis shows decreasing energy value and rising emissions, notably in high concentration pathways. Yield declines are steeper in hilly regions, jeopardizing energy advantages. Lower concentration pathways and plains cultivation offer resilience.
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- March 23, 2024
Cellulase-added cassava ethanol process boosts ethanol titer and reduces glycerol production
A bolt-on cellulase-added ethanol process was developed to utilize cellulose in cassava tuber, alongside starch, for bioethanol production. This enhanced process increased ethanol titer by converting cellulose, resulting in higher ethanol concentration and reduced glycerol production. The decrease in glycerol was attributed to reduced medium viscosity caused by cellulase addition, highlighting improved efficiency and reduced waste in cassava ethanol production.
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- March 23, 2024
Rheological characteristics and genotype correlation of cassava root for very high gravity ethanol production: The influence of cassava varieties and harvest times
This study investigates how the rheological properties of native cassava affect very high gravity (VHG) ethanol fermentation, influencing heat and mass transfer, mixing energy, and overall yield. Evaluation of six cassava varieties across different harvest times reveals genotype correlations, with Rayong 11 at 15 months showing the highest ethanol concentration and yield.
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- March 23, 2024