Recent Developments in Pretreatment and Enzymatic Hydrolysis for Cellulosic Bioethanol Production

2021 ◽  
pp. 103-121
Author(s):  
Puneet Kumar Singh ◽  
Snehasish Mishra ◽  
Sanjay Kumar Ojha ◽  
Kalyani Naik
Keyword(s):  
Enzymatic Hydrolysis ◽  
Bioethanol Production ◽  
Recent Developments

Effect of antioxidant extraction on the enzymatic hydrolysis and bioethanol production of the extracted steam-exploded sugarcane bagasse

2014 ◽  
Vol 82 ◽  
pp. 91-96 ◽  
Author(s):  
Jingbo Li ◽  
Kejing Wu ◽  
Wenjuan Xiao ◽  
Jinjin Zhang ◽  
Jianghai Lin ◽  
...  
Keyword(s):  
Enzymatic Hydrolysis ◽  
Sugarcane Bagasse ◽  
Bioethanol Production

scholarly journals Acid and Enzymatic Hydrolyses of Rice Bran for Bioethanol Production

ALCHEMY ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 24
Author(s):  
Dewi Yuliani ◽  
Khoirul Achmad Julianto ◽  
Akyunul Jannah
Keyword(s):  
Enzymatic Hydrolysis ◽  
Hydrochloric Acid ◽  
Acid Hydrolysis ◽  
Sulphuric Acid ◽  
Rice Bran ◽  
Dilute Hydrochloric Acid ◽  
Cellulolytic Enzyme ◽  
Bioethanol Production ◽  
By Products ◽  
Sugar Source

<p class="BodyAbstract">Rice bran is one among many agricultural by-products containing ~50-60 wt.% of carbohydrate. The carbohydrate is a prominent sugar source for bioethanol production. The objective of this research was to study bioethanol production from rice bran by acid and enzymatic treatment. The variations of acid used were dilute hydrochloric acid and sulphuric acid, while variations of enzyme used were amylolytic and cellulolytic enzyme. Ethanol production of acid-hydrolyzed rice bran was 24.95±1.61% (v/v) by hydrochloric acid and 29.57±2.04% (v/v) by sulphuric acid. Ethanol produced by enzymatic hydrolysis was quite low i.e. 6.7±0.04%, and 8.86±0.29% (v/v) for amylolytic and cellulolytic hydrolysate, respectively.</p><p class="BodyAbstract"> </p><p>Keywords: Bioethanol, rice bran, acid hydrolysis, enzymatic hydrolysis</p>

Changes in poplar (Populus trichocarpa) wood porous structure after liquid hot water (LHW) pretreatment

2020 ◽  
Vol 112 ◽  
pp. 71-78
Author(s):  
Florentyna Akus-Szyblerg ◽  
Jan Szadkowski ◽  
Andrzej Antczak ◽  
Janusz Zawadzki
Keyword(s):  
Enzymatic Hydrolysis ◽  
Porous Structure ◽  
Populus Trichocarpa ◽  
Hot Water ◽  
Size Exclusion ◽  
Bioethanol Production ◽  
Poplar Wood ◽  
Liquid Hot Water ◽  
Exclusion Chromatography ◽  
Pretreatment Conditions

Changes in poplar (Populus trichocarpa) wood porous structure after liquid hot water (LHW) pretreatment. The aim of this research was to investigate the effect of applying different hydrothermal pretreatment conditions on the porous structure of poplar wood. Porosity is recognised as an important factor considering efficiency of an enzymatic hydrolysis as a step of bioethanol production. Native poplar wood as well as solid fractions after pretreatment performed at different temperatures (160 °C, 175 °C and 190 °C) were analysed. Porous structure was examined with an inverse size-exclusion chromatography (ISEC) method. Results indicated a significant development of the porous structure of the biomass with increasing porosity along with the growing temperature of the LHW process. The temperature of 190 °C was chosen as the most promising condition of poplar wood LHW pretreatment in terms of the efficiency of the subsequent steps of bioethanol production. The obtained results were consistent with the previous experimental data procured during analysis of the LHW pretreated poplar wood and its subsequent enzymatic hydrolysis yield.

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