Steam explosion pretreatment improves acetic acid organosolv delignification of oil palm mesocarp fibers and sugarcane bagasse

Biomass pretreatment is a mandatory step for the biochemical conversion of lignocellulose to chemicals. During pretreatment, soluble compounds are released into the prehydrolyzate that inhibit the enzymatic hydrolysis step. In this work, we investigated how the reaction conditions in steam explosion pretreatment of beechwood (severity: 3.0–5.25; temperature: 160–230 °C) influence the resulting amounts of different inhibitors. Furthermore, we quantified the extent of enzyme inhibition during enzymatic hydrolysis of Avicel in the presence of the prehydrolyzates. The amounts of phenolics, HMF, acetic acid and formic acid increased with increasing pretreatment severities and maximal quantities of 21.6, 8.3, 43.7 and 10.9 mg/gbeechwood, respectively, were measured at the highest severity. In contrast, the furfural concentration peaked at a temperature of 200 °C and a severity of 4.75. The presence of the prehydrolyzates in enzymatic hydrolysis of Avicel lowered the glucose yields by 5–26%. Mainly, the amount of phenolics and xylose and xylooligomers contributed to the reduced yield. As the maximal amounts of these two inhibitors can be found at different conditions, a wide range of pretreatment severities led to severely inhibiting prehydrolyzates. This study may provide guidelines when choosing optimal pretreatment conditions for whole slurry enzymatic hydrolysis.

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LIQUID HOT WATER AND STEAM EXPLOSION PRETREATMENT OF SUGARCANE BAGASSE FOR ENZYME PRODUCTION BY A SEQUENTIAL SOLID-STATE AND SUBMERGED METHOD

10.5151/chemeng-cobeq2014-1284-20093-153536 ◽

2015 ◽

Cited By ~ 1

Author(s):

F. M. CUNHA ◽

A. BADINO ◽

C. S. FARINAS ◽

E. XIMENES ◽

M. R. LADISCH

Keyword(s):

Solid State ◽

Sugarcane Bagasse ◽

Enzyme Production ◽

Steam Explosion ◽

Hot Water ◽

Liquid Hot Water ◽

Steam Explosion Pretreatment

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Steam explosion pretreatment to obtain eco-friendly building blocks from oil palm mesocarp fiber

Industrial Crops and Products ◽

10.1016/j.indcrop.2019.111907 ◽

2020 ◽

Vol 143 ◽

pp. 111907 ◽

Cited By ~ 5

Author(s):

Francisco Pereira Marques ◽

Lorena Mara Alexandre Silva ◽

Diego Lomonaco ◽

Morsyleide de Freitas Rosa ◽

Renato Carrhá Leitão

Keyword(s):

Oil Palm ◽

Steam Explosion ◽

Building Blocks ◽

Steam Explosion Pretreatment

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Steam explosion pretreatment of oil palm empty fruit bunches (EFB) using autocatalytic hydrolysis: A biorefinery approach

Bioresource Technology ◽

10.1016/j.biortech.2015.08.126 ◽

2016 ◽

Vol 199 ◽

pp. 173-180 ◽

Cited By ~ 44

Author(s):

Jesus David Coral Medina ◽

Adenise Woiciechowski ◽

Arion Zandona Filho ◽

Poonam Singh Nigam ◽

Luiz Pereira Ramos ◽

...

Keyword(s):

Oil Palm ◽

Steam Explosion ◽

Empty Fruit Bunches ◽

Steam Explosion Pretreatment

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Production of Ethanol from Pulp Obtained by Steam Explosion Pretreatment of Oil Palm Trunk

Energy Sources Part A Recovery Utilization and Environmental Effects ◽

10.1080/15567030903078012 ◽

2010 ◽

Vol 33 (3) ◽

pp. 221-228 ◽

Cited By ~ 3

Author(s):

T. Khunrong ◽

V. Punsuvon ◽

P. Vaithanomsat ◽

C. Pomchaitaward

Keyword(s):

Oil Palm ◽

Steam Explosion ◽

Oil Palm Trunk ◽

Steam Explosion Pretreatment

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Enhancing Biogas Production from Sugarcane Bagasse Using Steam Explosion in According With Acetic Acid Pretreatment

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.856.321 ◽

2013 ◽

Vol 856 ◽

pp. 321-326 ◽

Cited By ~ 1

Author(s):

Netchanok Srisang ◽

Orathai Chavalparit

Keyword(s):

Acetic Acid ◽

Reaction Time ◽

Sugarcane Bagasse ◽

Steam Explosion ◽

Biogas Production ◽

Acid Pretreatment ◽

Treatment Conditions ◽

Pre Treatment ◽

The Individual ◽

Central Composite

Dilute acetic acid was used to pretreat sugarcane bagasse with 180°C steam explosion prior to anaerobic digestion. The Central Composite Design (CCD) was employed to recognize the optimum condition of pre-treatment sugarcane bagasse for biogas production. The individual variable effects of acetic acid concentration and reaction time on enhancing biogas production were investigated using response surface methodology (RSM). Data obtained from RSM analysis on biogas production were depending on analysis of variance (ANOVA). After optimization, the optimum pre-treatment condition was at 1.0% acetic, 17.45 min reaction time, while the maximum biogas production (434.47 L/kgVS) was 91.88% higher than the control (226.42 L/kgVS). Hence the optimum pre-treatment conditions for maximum biogas production were obtained by RSM analysis. It can be concluded that dilute acetic acid and steam explosion techniques can be used to achieve higher biogas.

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