31 documents found, page 1 of 4

Assessing process variable effects on laccase-mediated treatment for enhanced s...

Lignocellulosic materials (LCM) have gained popularity as a substitute for petroleum, enabling the production of biofuels and various compounds. Eucalyptus bark residue (EBR), generated by pulp and paper mills, is a prime illustration of such materials. The conversion of holocellulose in these materials typically involves the application of enzymes. Nevertheless, these materials may still contain lignin, widely...

Assessing potential effects of a laccase extract over the enzymatichydrolysis o...

Lignocellulosic materials are rising as an alternative to petroleum, from which biofuels and numerous compounds may be produced. Eucalyptus barks, abundantly generated by pulp & paper mills, are a good example of such materials, being typically used for energy production. Holocellulose conversion of these materials is usually made by enzyme preparations, mainly acting on the hydrolysis of complex cellulose into...

Exploring the potential of primary sludges from paper mills for the production ...

Background & Objectives: Industrial residues are emerging as low-cost alternatives to typical lignocellulosic materials, usually more expensive and hard to process, being currently the center of an urgent transition into a greener economy. One possible example are the primary sludges abundantly produced by paper mills, typically burned for heat generation. This work aimed to assess the potential of primary slud...

Very high gravity bioethanol revisited: main challenges and advances

Over the last decades, the constant growth of the world-wide industry has been leading to more and more concerns with its direct impact on greenhouse gas (GHG) emissions. Resulting from that, rising efforts have been dedicated to a global transition from an oil-based industry to cleaner biotechnological processes. A specific example refers to the production of bioethanol to substitute the traditional transporta...

Economic determinants on the implementation of a Eucalyptus wood biorefinery pr...

The economic impact of different potentially scalable process improvements was here assessed for the first time in the specific context of a Eucalyptus wood biorefinery producing biofuels, high-value chemicals and energy. The base case scenario referring to bioethanol as the only product was clearly unviable, which mostly resulted from the high cost of cellulases and heat transfer utilities and the moderate fin...

Co-production of biofuels and value-added compounds from industrial Eucalyptus ...

In this work, hydrothermal treatment was assessed for the fractionation of industrial Eucalyptus globulus bark residue (EBR) to obtain biofuels and value-added compounds (such as oligosaccharides and phenolic compounds) in separated streams. Hydrothermal treatment was evaluated under non-isothermal regimen in the range of maximum temperature (Tmax) of 177228 °C or severities (S0) between 2.76 and 4.25. The high...

Application of a fungal extract with laccase activity to improve the enzymatic ...

Enzyme immobilization as a strategy towards efficient and sustainable lignocell...

Environmental issues have led to the urgent necessity of research to focus on fossil fuel dependency detachment in the near future. Under the biorefinery concept, enzymatic hydrolysis is a key bioprocess for lignocellulosic biomass conversion into biofuels and bioproducts. Even though taking place under milder conditions and without the use of hazardous chemicals compared, for example, with acid hydrolysis, the...

Strategies towards reduction of cellulases consumption: debottlenecking the eco...

Lignocellulosic residues have been receiving growing interest as a promising source of polysaccharides, which can be converted into a variety of compounds, ranging from biofuels to bioplastics. Most of these can replace equivalent products traditionally originated from petroleum, hence representing an important environmental advantage. Lignocellulosic materials are theoretically unlimited, cheaper and may not c...

Multi-feedstock approach for ethanol production using cell surface engineered S...

The economic viability of second generation bioethanol has been pursued for several years, with struggles such as the high cost of enzymes and low ethanol titers receiving great attention. Saccharomyces cerevisiae is the preferred microorganism for bioethanol production and has been extensively studied and genetically modified for optimization of lignocellulosic processes. Moreover, S. cerevisiae strains isolat...