Recent updates on lignocellulosic biomass derived ethanol - A review

Abstract

HIGHLIGHTSCellulosic biomass is the only source for sustainable fuels.Ethanol is a promising fuel candidate for near/long term applications.Ethanol can also serve as a precursor for other fuels and chemicals.However, processing cost for 2G ethanol is still high.Thus, urgent research efforts are needed to bring the cost down. Lignocellulosic (or cellulosic) biomass derived ethanol is the most promising near/long term fuel candidate. In addition, cellulosic biomass derived ethanol may serve a precursor to other fuels and chemicals that are currently derived from unsustainable sources and/or are proposed to be derived from cellulosic biomass. However, the processing cost for second generation ethanol is still high to make the process commercially profitable and replicable. In this review, recent trends in cellulosic biomass ethanol derived via biochemical route are reviewed with main focus on current research efforts that are being undertaken to realize high product yields/titers and bring the overall cost down. GRAPHICAL ABSTRACT ARTICLE INFO ABSTRACT

Saccharomyces cerevisiae: A Unicellular Model Genetic Organism of Enduring Importance

“…Variations of SGA in which modified or heterologous genes are crossed into the deletion collection are also a powerful tool. Thus, their findings have potential implications for biofuel production, which is limited in part by the challenges associated with xylose fermentation (Kumar, Tabatabaei, Karimi, & Horváth, 2016). Thus, their findings have potential implications for biofuel production, which is limited in part by the challenges associated with xylose fermentation (Kumar, Tabatabaei, Karimi, & Horváth, 2016).…”

“…For example, this strategy helped researchers identify genes that regulate metabolism of the fivecarbon sugar xylose (Usher et al, 2011), which is abundant in cellulose. Thus, their findings have potential implications for biofuel production, which is limited in part by the challenges associated with xylose fermentation (Kumar, Tabatabaei, Karimi, & Horváth, 2016).…”

Novel Amphiphiles and Their Applications for Different Purposes with Special Emphasis on Polymeric Surfactants

“…So, other renewable sources of biofuels are highly demanded. Ligno‐cellulosic biomass, present in nature in form of wooden barks of various plants, are huge source of cheap energy having the potential to be converted into variety of biofuels and fine chemicals . The ligno‐cellulosic biomass contains 30–60% cellulose, 20–40% hemicellulose and 10–25% lignin forming hetero matrix which are interconnected .…”

Policy Uncertainty and the US Ethanol Industry

“…A recent study by Johnson [35] assessed the production cost of cellulosic ethanol with an integrated enzyme production method to be $0.62 to $0.73 per liter. A detailed review of recent technological progress is available by Kumar et al [36]. On the industry side, a report from POET LLC indicated that their 2009 cost was $0.62/L [37].…”