Bioethanol Production from Renewable Raw Materials and Its Separation and Purification: A Review

Area of Science:

• Biotechnology
• Renewable Energy
• Biochemical Engineering

Background:

• Bioethanol is a key biofuel with environmental benefits, primarily produced from sugar/starch.
• Lignocellulosic biomass (agricultural/forestry residues, energy crops) presents a sustainable, non-food alternative feedstock.
• Efficient pretreatment of lignocellulose is crucial for enzymatic hydrolysis and fermentable sugar production.

Purpose of the Study:

• To review recent advancements in bioethanol production from diverse renewable feedstocks.
• To explore innovative pretreatment, hydrolysis, and fermentation strategies for lignocellulosic biomass.
• To discuss emerging separation and purification techniques for bioethanol.

Main Methods:

• Review of current literature on lignocellulosic biomass conversion to bioethanol.
• Analysis of different pretreatment methods (e.g., physical, chemical, biological).
• Examination of enzymatic hydrolysis, fermentation, and downstream processing technologies.

Main Results:

• Lignocellulosic feedstocks offer a low-cost, sustainable alternative to traditional sources.
• Efficient pretreatment enhances sugar accessibility, improving ethanol yields.
• Advancements in bioprocesses and separation techniques are improving economic viability.

Conclusions:

• Lignocellulosic biomass is a promising feedstock for sustainable bioethanol production.
• Continued research in pretreatment and downstream processing is vital for commercialization.
• Bioethanol from non-food sources contributes to energy security and environmental sustainability.