High-efficiency second generation ethanol from the hemicellulosic fraction of softwood chips mixed with construction and demolition residues.

08:00 EDT 20th June 2018 | BioPortfolio

Summary of "High-efficiency second generation ethanol from the hemicellulosic fraction of softwood chips mixed with construction and demolition residues."

Using lignocellulosic residues for bioethanol production could provide an alternative solution to current approaches at competitive costs once challenges related to substrate recalcitrance, process complexity and limited knowledge are overcome. Thus, the impact of different process variables on the ethanol production by Saccharomyces cerevisiae using the hemicellulosic fraction extracted through the steam-treatment of softwood chips mixed with construction and demolition residues was assessed. A statistical design of experiments approach was developed and implemented in order to identify the influencing factors (various nutrient addition sources as well as yeast inoculum growth conditions and inoculation strategies) relevant for enhancing the ethanol production potential and substrate uptake. Ethanol yields of 74.12% and monomeric sugar uptakes of 82.12 g/L were predicted and experimentally confirmed in bench and bioreactor systems. This innovative approach revealed the factors impacting the ethanol yields and carbohydrate consumption allowing powerful behavioral predictions spanning different process inputs and outputs.


Journal Details

This article was published in the following journal.

Name: Bioresource technology
ISSN: 1873-2976
Pages: 421-430


DeepDyve research library

PubMed Articles [21476 Associated PubMed Articles listed on BioPortfolio]

Lignocellulosic biomass to biofuels and biochemicals, a comprehensive review with a focus on ethanol organosolv pretreatment technology.

Lignocellulosic biomass is one of the most potential feedstock to produce second generation cellulosic ethanol and biochemicals. In order to enhance the enzymatic digestibility of lignocellulosic biom...

Selective hydrogenation of CO2 into ethanol over cobalt catalysts.

Hydrogenation of CO2 into valuable chemicals is in great demand but still challengeable. Here we report the selective hydrogenation of CO2 into ethanol over non-noble cobalt catalysts (CoAlOx), presen...

Characterization of the Clostridium thermocellum AdhE, NfnAB, Ferredoxin and Pfor proteins for their ability to support high titer ethanol production in Thermoanaerobacterium saccharolyticum.

The thermophilic anaerobes Thermoanaerobacterium saccharolyticum and Clostridium thermocellum are good candidates for lignocellulosic ethanol production. T. saccharolyticum has been successfully engin...

Defining research & development process targets through retro-techno-economic analysis: The sugarcane biorefinery case.

A new approach is reported for techno-economic analysis of lignocellulosic ethanol production. With this methodology, general targets for key process variables can be draw, a valuable feedback for Res...

Optimization of sugar recovery from rapeseed straw pretreated with FeCl.

In this work, rapeseed straw was pretreated with FeCl to achieve high sugar recoveries. Temperature (120-160 °C), and FeCl concentration (0.1-0.3 M) were selected as factors and modified accordin...

Clinical Trials [5258 Associated Clinical Trials listed on BioPortfolio]

Systemic and Local Diffusion of Ethanol After Administration of Ethanol 96% Formulated in a Gel and Ethanol 98% Solution by the Percutaneous Route, in Patients With Congenital Venous Malformations:Pharmacokinetic, Pharmacodynamic and Clinical Study.

Absolute ethanol has been used "off-label" as an unmodified formulation (solution) in CVM. Despite its effectiveness, absolute ethanol appears difficult to handle because of its high diffu...

The Effects of Ethanol on Intestinal Permeability and Gut Hormones

The aime of this study is to envsitigate if ethanol has an incretin effect. This is done by administration of ethanol orally vs. an isoethanolaemic i.v. infusion of ethanol.

Substrate Metabolism During Exercise Following Ingestion of Ethanol

This study will investigate how ethanol (pure alcohol) influences carbohydrate and fat metabolism during prolonged, moderate intensity exercise. Participants will perform two bouts of cycl...

Endtidal Ethanol in Sclerotherapy

During the ethanol sclerotherapy procedure, the investigators will record doses of and time of ethanol injections and record ethanol concentrations in endtidal breath every 5 minutes. Furt...

Dose-response Effect of Alcohol Ingestion on Steroid Profile

The aim of the clinical trial is to study the intra-individual variation of steroid profile parameters after experimental administration of different doses of ethanol in Caucasian women.

Medical and Biotech [MESH] Definitions

A blood protein (NSILA) which mimics the biological activity of insulin in serum, but is not suppressed by insulin antibodies. During acid-ethanol extraction of Cohn fraction III, 10% of the activity is found in the supernatant (NSILA-S) and the remaining activity in the precipitate (NSILA-P). The latter is a large molecular compound, much less stable than the soluble fraction. NSILA-S is a more potent growth factor than insulin and exhibits sulfation activity.

A lipid-regulating agent that lowers elevated serum lipids primarily by decreasing serum triglycerides with a variable reduction in total cholesterol. These decreases occur primarily in the VLDL fraction and less frequently in the LDL fraction. Gemfibrozil increases HDL subfractions HDL2 and HDL3 as well as apolipoproteins A-I and A-II. Its mechanism of action has not been definitely established.

A microscopic imaging technique that takes advantage of the process of harmonic generation that occurs when photons interact to generate new photons of a different wavelength. In second harmonic generation, two photons of the same wavelength and frequency, such as from a LASER, interact inside a medium and are converted to a photon of twice the frequency and half of the wavelength of the two incident photons. The light signals captured are used to produce images that are dependent on the unique optical properties of the material.

Systems of medicine based on cultural beliefs and practices handed down from generation to generation. The concept includes mystical and magical rituals (SPIRITUAL THERAPIES); PHYTOTHERAPY; and other treatments which may not be explained by modern medicine.

A bone morphogenetic protein that is found at high concentrations in a purified osteoinductive protein fraction from BONE. Bone morphogenetic protein 3 is referred to as osteogenin, however it may play a role in variety of developmental processes.

Quick Search


DeepDyve research library

Relevant Topic

Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...

Searches Linking to this Article