Review of pretreatment processes for lignocellulosic ethanol production, and development of an innovative method

Fruit Wastes Hydrolysates as Feedstock: Pre-Treatment Strategies for Cost-Saving and Sustainable Microalgae Cultivation

“…Hydrolysates prepared from fruit wastes could serve as suitable nutrient source due to the presence of carbohydrates and other nutrients. Pre-treatment methodologies can be categorized into physical, chemical and biological treatments or any combination of them [14]. Various hydrolysis methods are used and selection of suitable method for higher biomass and lipid accumulation could reduce the cost of biofuel production.…”

Ethanol Production from Sugarcane Bagasse Using Phosphoric Acid-Catalyzed Steam Explosion

“…Hence, a suitable pretreatment method must remove structural barriers that limit the conversion of these materials to fuels and chemicals. [1][2][3][4][5] According to Balat et al 1 pretreatment must produce substrates that can be easily converted to fermentable sugars by acid or enzymatic hydrolysis and prevent the release of inhibitors for the subsequent steps of hydrolysis and fermentation. Besides, an ideal pretreatment method must be economically viable and environmentally friendly.…”

“…Also, hemicelluloses are almost completely removed and lignin is modified to a deeper extend, leading to cellulosic materials that are more susceptible to acid or enzymatic hydrolysis. 4,[6][7][8][9] The use of dilute H 3 PO 4 as a pretreatment catalyst, compared to strong acids such as H 2 SO 4 , results in lower sugar losses and less accumulation of furan compounds in the reaction medium. [10][11][12][13] Also, H 3 PO 4 is less corrosive and can act as an additional source of nutrients for microbial growth, particularly in the form of ammonium phosphate.…”

Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, and Pulping Outcomes

“…Different pretreatments of lignocellulosics produce carbohydrates-and lignin-containing hydrolysates, which can be further converted into desired chemicals, biomaterials, or biofuels (Kamm and Kamm 2004;Sánchez and Cardona 2008;Alvira et al 2010;Chiaramonti et al 2012;Mood et al 2013;Silva-Fernandes et al 2015). In addition, using various pretreatments, it is possible to increase the reactivity of feedstock material, leading to enhanced pulping performance and recovery of potential by-streams (lignin and hydroxy acids) (Hendriks and Zeeman 2009;Kumar et al 2009;.…”