Bioethanol production from renewable sources: Current perspectives and technological progress

Obtaining Bioethanol through Hydrolytic Treatment of Agro-Industrial Banana Residues

“…biomass allows the conversion of cellulose and hemicellulose into simpler sugars more easily digested by the fermentation agent, further decreasing the crystallinity of the cellulose and increasing the surface area [5]. In contrast, the samples obtained with 15 minutes hydrolysis time or acidic hydrolyzing agents represent densities close to the one from water, indicating a composition which water percentage is higher, and therefore, the existence of hydrogen bridges intra and intermolecular [26].…”

“…The production of bioethanol from inexpensive and widely available raw materials is a highly attractive option [4]. Bioethanol is adaptable to 5 or 10% blended feed systems and it is mainly obtained from biomass, which is competitively given its price, quality and origin [5] [6] [7]. The production of bioethanol based on sugars and starches has been a subject of great controversy due to the food competition that is generated, as well as to the emerge of more sustainable sources from agricultural byproducts, forest residues or energy crops denominated as lignocellulosic biomass or also known as second generation [8] [9].…”

Second-generation bioethanol from industrial wood waste of South American species

“…Wood wastes are in general unexploited resources with great potential for ethanol production (220-285 L/ton of wood). They have low ash content and their transport cost is low because of their high density, as compared with agro-industrial wastes (Zabed et al, 2017).…”

“…Another advantage of or second-generation ethanol (cellulosic bioethanol) over the technologically mature firstgeneration ethanol is the ability to use different types of lignocellulosic materials as a source of glucose. In this context, lignocellulosic materials are being intensely studied as feedstocks for bioethanol production, while focusing on improving the technological processes involved in order to reduce the production cost of fermentable sugars and their fermentation to ethanol (Alvira et Zabed et al, 2017). However, among sixteen commercial-scale cellulosic ethanol projects using sugar platform in the world in the year 2012, only one has been based on wood as raw material (Araújo, 2016).…”

Integration Approach of Anaerobic Digestion and Fermentation Process Towards Producing Biogas and Bioethanol with Zero Waste: Technical

“…These groups are extremely differ from each others in term of sugar solutions. The groups are; 1) sugars (sugar crops and byproducts of sugar refineries), 2) starchy crops, 3) lignocellulosic biomass (LCB) [43]. Moreover, production of bioethanol from edible foods contain sugars and starch is much easier than its production from LCBs.…”