Agricultural waste, particularly lignocellulose, has been used in the second generation of biogas. Coffee pulp and chicken feathers can be developed as biogas raw materials because their suitability a substrate. This study investigates effect percentage total solids (TS), carbon to nitrogen ratio (C/N, g/g), delignification pretreatment on production from coffee feathers, aims compose kinetics ...

High efficiency enzymatic hydrolysis of lignocellulose to produce fermentable sugar is important for bioconversion lignocellulosic biomass liquid fuels and chemicals. In this study, a simple pretreatment with potassium permanganate used enhance the organosolv corn stover. It testified that, compared single pretreatment, KMnO4 assisted significantly increase yields carbohydrates through decreasi...

A high load of inorganics in raw lignocellulosic biomass is known to inhibit the yield bio-oil and alter chemical reactions during fast pyrolysis biomass. In this study, palm kernel shell (PKS), an agricultural residue from oil production, two other woody samples (mahogany (MAH) sawdust iroko (IRO) sawdust) were pretreated with distilled water or acidic solution (either acetic, formic, hydrochl...

anaerobic digestion is a feasible technology to stabilize the solid waste generated inslaughterhouses obtaining significant quantities of biogas, considered as a clean and renewable fuel. this iswhy it is important to optimize the digestion process in order to eliminate organic matter and maximize theproduction of biogas. in this work, a system was developed for treating slaughterhouse solid wa...

Ionic liquids (ILs) as designer solvents have been applied in biomass pretreatment to increase cellulose accessibility and therefore improve the enzymatic hydrolysis. We investigated the characterization of the micromorphology and the topochemistry of poplar wood during 1-ethyl-3-methylimidazolium acetate pretreatment with mild conditions (90 °C for 20 and 40 min) by multiple microscopic techni...

Using chitosan as pretreatment agent, the dyeing properties of peanut skin extracts (PSE) to flax fabrics were improved. Flax have excellent comfort property and are loved by many people. However, is different dye, especially with natural dye. In this research, was used pretreat PSE dye pretreated fabric. The optimal conditions investigated according K/S value dyed fabrics. Comparing original f...

This study focused on the optimization of xylitol production from sugarcane bagasse by using response surface methodology. Xylitol was produced through a series processes, firstly, ultrasound-assisted mild alkaline pretreatment for xylan extraction followed enzymatic hydrolysis to xylose enzyme β-1,4-xylanase and finally microbial fermentation yeast (Candida guilliermondii), bacteria (Corynebac...

Xylanase pretreatment was used to improve the chlorine dioxide bleaching of bagasse pulp. The pulp was pretreated with xylanase, which was followed by a chlorine dioxide bleaching stage. The HexA content of the pulp and the AOX content of the bleaching effluent were measured using UV-Vis and GC-MS methods, respectively. The results showed that a good correlation occurred between HexA and kappa ...

The valorization of agro-residues by biological routes is a key technology that contributes to the development of sustainable processes and the generation of value-added products. Sugarcane bagasse is an agro-residue generated by the sugar and alcohol industry in Brazil (186 million tons per year), composed essentially of cellulose (32-44%), hemicellulose (27-32%) and lignin (19-24%). The conve...

The characteristics of waste activated sludge (WAS) were investigated by batch and continuous experiments using thermal pretreatment in the anaerobic digestion. The solubilization ratios of the chemical oxygen demand (COD), protein and carbohydrate increased as 14.8 21.5, 14.7 23.5, and 21 35 %, respectively. The ∼ ∼ ∼ maximum value of specific methane production was achieved at the thermal pre...