Cultivar variation and selection potential relevant to the production of cellulosic ethanol from wheat straw

2012 ◽  
Vol 37 ◽  
pp. 221-228 ◽  
Author(s):  
J. Lindedam ◽  
S.B. Andersen ◽  
J. DeMartini ◽  
S. Bruun ◽  
H. Jørgensen ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Cellulosic Ethanol ◽  
Cultivar Variation ◽  
Variation And Selection

scholarly journals Lignocellulose pretreatment technologies affect the level of enzymatic cellulose oxidation by LPMO

2015 ◽  
Vol 17 (5) ◽  
pp. 2896-2903 ◽  
Author(s):  
Ursula Fabiola Rodríguez-Zúñiga ◽  
David Cannella ◽  
Roberto de Campos Giordano ◽  
Raquel de Lima Camargo Giordano ◽  
Henning Jørgensen ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Corn Stover ◽  
Sugarcane Bagasse ◽  
Cellulosic Ethanol ◽  
Cellulose Oxidation ◽  
Available Resources

Sugarcane bagasse, corn stover, and wheat straw are among the most available resources for the production of cellulosic ethanol.

scholarly journals Production of Cellulosic Ethanol from Enzymatically Hydrolysed Wheat Straws

2020 ◽  
Vol 10 (21) ◽  
pp. 7638
Author(s):  
Vasile-Florin Ursachi ◽  
Gheorghe Gutt
Keyword(s):  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Cellulosic Ethanol ◽  
Raw Material ◽  
High Yield ◽  
Liquid Ratio ◽  
Hydrolysis Process ◽  
Pretreatment Conditions ◽  
Pretreated Wheat Straw ◽  
First Time

The aim of this study is to find the optimal pretreatment conditions and hydrolysis in order to obtain a high yield of bioethanol from wheat straw. The pretreatments were performed with different concentrations of sulphuric acid 1, 2 and 3% (v/v), and were followed by an enzymatic hydrolysis that was performed by varying the solid-to-liquid ratio (1/20, 1/25 and 1/30 g/mL) and the enzyme dose (30/30 µL/g, 60/60 µL/g and 90/90 µL/g Viscozyme® L/Celluclast® 1.5 L). This mix of enzymes was used for the first time in the hydrolysis process of wheat straws which was previously pretreated with dilute sulfuric acid. Scanning electron microscopy indicated significant differences in the structural composition of the samples because of the pretreatment with H2SO4 at different concentrations, and ATR-FTIR analysis highlighted the changes in the chemical composition in the pretreated wheat straw as compared to the untreated one. HPLC-RID was used to identify and quantify the carbohydrates content resulted from enzymatic hydrolysis to evaluate the potential of using wheat straws as a raw material for production of cellulosic ethanol in Romania. The highest degradation of lignocellulosic material was obtained in the case of pretreatment with 3% H2SO4 (v/v), a solid-to-liquid ratio of 1/30 and an enzyme dose of 90/90 µL/g. Simultaneous saccharification and fermentation were performed using Saccharomyces cerevisiae yeast, and for monitoring the fermentation process a BlueSens equipment was used provided with ethanol, O2 and CO2 cap sensors mounted on the fermentation flasks. The highest concentration of bioethanol was obtained after 48 h of fermentation and it reached 1.20% (v/v).

Comparison of Low-Temperature Alkali/Urea Pretreatments for Ethanol Production from Wheat Straw

2021 ◽  
Vol 15 (3) ◽  
pp. 399-407
Author(s):  
Zahoor ◽  
Wen Wang ◽  
Xuesong Tan ◽  
Qiang Yu ◽  
Yongming Sun ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Enzymatic Hydrolysis ◽  
Low Temperature ◽  
Ethanol Production ◽  
Wheat Straw ◽  
Response Surface ◽  
Cellulosic Ethanol ◽  
Enzymatic Saccharification ◽  
Hydrolysis Of ◽  
Bioethanol Yield

NaOH/urea (NU) pretreatment at lower than 0 °C has been frequently applied for improving bio-conversion of lignocellulose, but the wastewater generated from the pretreatment process is hard to dispose. KOH/urea (KU) pretreatment for enhancing bioconversion of lignocellulose has recently attracted researchers’ attention due to the recycling of wastewater for facilitating crops’ growth. This study compared the effects of NU and KU pretreatments at cold conditions on the enzymatic hydrolysis and bioethanol yield from wheat straw (WS). By using response surface methodology an optimal pretreatment with an equal ratio of alkali/urea (4% w/v) at −20 °C for 3 h was established. The enzymatic hydrolysis of KU-treated WS was 81.17%, which was similar to that of NU-treated WS (83.72%) under the same condition. It means that KU pretreatment has equal ability to NU pretreatment to improve enzymatic saccharification of lignocellulose. KU pretreatment has the promising potential to replace NU pretreatment for facilitating bioconversion of lignocellulose in cold conditions due to the clean way to recycle its wastewater as fertilizer for crop growth. Hence, KU pretreatment combined with enzymatic hydrolysis and fermentation could be a promising green way to cellulosic ethanol production with zero waste emission.

Selecting winter wheat straw for cellulosic ethanol production in the Pacific Northwest, U.S.A

2019 ◽  
Vol 123 ◽  
pp. 59-69 ◽  
Author(s):  
Fitria ◽  
Hao Ruan ◽  
Steven C. Fransen ◽  
Arron H. Carter ◽  
Haiying Tao ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Ethanol Production ◽  
Wheat Straw ◽  
Pacific Northwest ◽  
Cellulosic Ethanol ◽  
The Pacific

scholarly journals Cellulosic ethanol: interactions between cultivar and enzyme loading in wheat straw processing

2010 ◽  
Vol 3 (1) ◽  
pp. 25 ◽  
Author(s):  
Jane Lindedam ◽  
Sander Bruun ◽  
Henning Jørgensen ◽  
Claus Felby ◽  
Jakob Magid
Keyword(s):  
Wheat Straw ◽  
Cellulosic Ethanol ◽  
Enzyme Loading

Autohydrolysis Pretreatment of Waste Wheat Straw for Cellulosic Ethanol Production in a Co-located Straw Pulp Mill

2014 ◽  
Vol 175 (2) ◽  
pp. 1193-1210 ◽  
Author(s):  
Qiang Han ◽  
Yanbin Jin ◽  
Hasan Jameel ◽  
Hou-min Chang ◽  
Richard Phillips ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Wheat Straw ◽  
Cellulosic Ethanol ◽  
Pulp Mill

Ultrasonic Vibration-Assisted Pelleting of Wheat Straw: A Designed Experimental Investigation on Pellet Quality and Sugar Yield

2012 ◽  
Vol 134 (6) ◽  
Author(s):  
P. F. Zhang ◽  
Q. Zhang ◽  
T. W. Deines ◽  
Z. J. Pei ◽  
D. H. Wang
Keyword(s):  
Experimental Investigation ◽  
Enzymatic Hydrolysis ◽  
Wheat Straw ◽  
Ultrasonic Vibration ◽  
Cellulosic Ethanol ◽  
Sugar Yield ◽  
Ultrasonic Power ◽  
Process Variables ◽  
Spring Back ◽  
Pellet Quality

Increasing demands and concerns for reliable supply of liquid transportation fuels make it important to find alternative sources to petroleum-based fuels. One such alternative is cellulosic ethanol. However, several technical barriers have hindered large-scale, cost-effective manufacturing of cellulosic ethanol, such as low density of cellulosic feedstocks (causing high transportation and storage costs) and low efficiency of enzymatic hydrolysis (causing longer processing time and low sugar yield). Ultrasonic vibration-assisted (UV-A) pelleting can increase the density of cellulosic materials and sugar yield in enzymatic hydrolysis. At present, effects of process variables in UV-A pelleting on pellet quality (density, durability, and spring-back) and sugar yield have not been adequately investigated. This paper reports an experimental investigation on UV-A pelleting of wheat straw. A 24 factorial design is employed to evaluate effects of process variables (moisture content, sieve size, pelleting pressure, and ultrasonic power) on output variables (pellet density, durability, spring-back, and sugar yield).

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