Production of intracellular β-xylosidase was studied in cultures of Penicillium janthinellum grown on citrus fruit waste supplemented cultivation media. Both dried orange peel and sweet lime peel could induce the production of this enzyme. The working strain showed a pronounced optimum pH and temperature for β-xylosidase production at 6.0 and 27 °C, respectively. The enzyme production was found...

In this study the effect of nitrogen (N) supplementation in the fungal pretreatment of willow sawdust (WSD) via the white rot fungus Abortiporus biennis (A. biennis) was studied in terms of the fractionation of lignocellulosic biomass and biochemical methane potential (BMP). Thus, different external nitrogen sources (yeast extract (YE), urea (UR), and ammonium nitrate (AN)) at different ratios ...

The effects of thermal-alkaline pretreatment on dewatered activated sludge (DAS) solubilisation and subsequent high-solid anaerobic digestion were studied by response surface methodology (RSM) from 105 to 135 °C and between 5 and 35 mg alkaline/g total solid (TS) DAS. Soluble chemical oxygen demand (SCOD), soluble carbohydrates, and protein concentrations were significantly enhanced in thermal-...

Effective conversion of lignocellulosic material as renewable energy source has significant reflection on economic and environmental impact. Diluted acid hydrolysis at optimal condition was used to liberate fermentable sugar. The sorghum stalks, the alkali pretreatment of biomass and hydrolysis in diluted hydrochloric acid were investigated. The hydrolysis reaction was carried out in a 5L react...

Due to the limited availability of wood, as highest quality raw material for production biomass pellets, increasing attention is being paid and use pellets from low-quality materials such different types agricultural waste. However, complex chemical composition these often leads various problems during their combustion. One biggest when it comes burning related low melting temperature resulting...

The effects of hydrolysis methods (hydrothermal, acid, alkali, hydrothermal-enzyme, acid-enzyme, and alkali-enzyme) on hydrolysate characteristics photo fermentative hydrogen production (PFHP) corn straw (CS) sorghum (SS) were investigated. optimum reducing the sugar in different solvent environments was studied by one-step co-enzymatic pretreatment through a 3,5-dinitrosalicylic acid method. p...

Due to the high viscosity and stickiness of dehydrated sludge, combination foaming pretreatment drying process is an effective method improve performance sludge. In this study, alkali industrial lignin fiber addition followed by mechanical whipping was employed for dewatered Using alone as agent, optimal NaOH found at 2.5 wt%, which superior adding CaO. Considering maximum efficiency, 2% FH-300...

Polyurethanes with water expansion properties are manufactured by incorporating polyurethane resins and superabsorbent polymers. This study aimed to present an optimal mixing ratio of a polymer that can express the effective waterproofing performance material properties. The evaluation results confirmed was exerted at more than 10% 150% or more, which were then set as minimum standard value for...

Abstract Background Cocksfoot grass ( Dactylis glomerata L.) with high biomass yield and rich cellulose can be used to produce bioethanol as fuel additive. In view of this, ultrasonic hydrothermal pretreatments followed by successive alkali extractions were assembled into an integrated biorefinery process applied on cocksfoot improve its enzymatic hydrolysis. this work, the effects sequential h...