Can ethanol partially or fully replace sulfuric acid in the acid wash step of bioethanol production to fight contamination by Lactobacillus fermentum?

2020 ◽  
Vol 37 (2) ◽  
pp. 323-332
Author(s):  
José Machado da Silva-Neto ◽  
Elizabete Aparecida Covre ◽  
Beatriz Costa Rosa ◽  
Sandra Regina Ceccato-Antonini
Keyword(s):  
Sulfuric Acid ◽  
Lactobacillus Fermentum ◽  
Bioethanol Production ◽  
Acid Wash

scholarly journals Optimized acid hydrolysis of the polysaccharides from the seaweed Solieria filiformis (Kützing) P.W. Gabrielson for bioethanol production

2017 ◽  
Vol 39 (4) ◽  
pp. 423 ◽  
Author(s):  
George Meredite Cunha de Castro ◽  
Norma Maria Barros Benevides ◽  
Maulori Curié Cabral ◽  
Rafael De Souza Miranda ◽  
Enéas Gomes Filho ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Kinetic Parameters ◽  
Renewable Resource ◽  
Bioethanol Production ◽  
Seaweed Species ◽  
Mild Conditions ◽  
Hydrolysis Of ◽  
Solieria Filiformis

 The seaweeds are bio-resource rich in sulfated and neutral polysaccharides. The tropical seaweed species used in this study (Solieria filiformis), after dried, shows 65.8% (w/w) carbohydrate, 9.6% (w/w) protein, 1.7% (w/w) lipid, 7.0% (w/w) moisture and 15.9% (w/w) ash. The dried seaweed was easily hydrolyzed under mild conditions (0.5 M sulfuric acid, 20 min.), generating fermentable monosaccharides with a maximum hydrolysis efficiency of 63.21%. Galactose and glucose present in the hydrolyzed were simultaneously fermented by Saccharomyces cerevisiae when the yeast was acclimated to galactose and cultivated in broth containing only galactose. The kinetic parameters of the fermentation of the seaweed hydrolyzed were Y(P⁄S) = 0.48 ± 0.02 g.g−1, PP = 0.27 ± 0.04 g.L−1.h−1, h = 94.1%, representing a 41% increase in bioethanol productivity. Therefore, S. filiformis was a promising renewable resource of polysaccharides easily hydrolyzed, generating a broth rich in fermentable monosaccharides for ethanol production. 

Development of two-step pretreatment of Chinese fir sawdust using dilute sulfuric acid followed by sodium chlorite for bioethanol production

Cellulose ◽  
2019 ◽  
Vol 26 (15) ◽  
pp. 8513-8524 ◽  
Author(s):  
Shuiping Ouyang ◽  
Hui Qiao ◽  
Qian Xu ◽  
Zhaojuan Zheng ◽  
Jia Ouyang
Keyword(s):  
Sulfuric Acid ◽  
Chinese Fir ◽  
Sodium Chlorite ◽  
Bioethanol Production ◽  
Dilute Sulfuric Acid

Solubilization and functionalization of sulfuric acid lignin generated during bioethanol production from woody biomass

2009 ◽  
Vol 100 (2) ◽  
pp. 1024-1026 ◽  
Author(s):  
Yasuyuki Matsushita ◽  
Toyoki Inomata ◽  
Tatsuya Hasegawa ◽  
Kazuhiko Fukushima
Keyword(s):  
Sulfuric Acid ◽  
Woody Biomass ◽  
Bioethanol Production ◽  
Sulfuric Acid Lignin

Conversion of sulfuric acid lignin generated during bioethanol production from lignocellulosic materials into polyesters with ɛ-caprolactone

2011 ◽  
Vol 57 (3) ◽  
pp. 214-218 ◽  
Author(s):  
Yasuyuki Matsushita ◽  
Toyoki Inomata ◽  
Yasuo Takagi ◽  
Tatsuya Hasegawa ◽  
Kazuhiko Fukushima
Keyword(s):  
Sulfuric Acid ◽  
Lignocellulosic Materials ◽  
Bioethanol Production ◽  
Sulfuric Acid Lignin

scholarly journals Pembuatan Bioetanol Berbahan Baku Kertas Bekas menggunakan Metode Hidrolisis Asam dan Fermentasi

2017 ◽  
Vol 5 (1) ◽  
pp. 17-21
Author(s):  
Cindi Ramayanti ◽  
Ketty R. Giasmara
Keyword(s):  
Sulfuric Acid ◽  
Liquid Fuels ◽  
Biomass Feedstock ◽  
Evaporation Process ◽  
Bioethanol Production ◽  
Daily Consumption ◽  
Fermentation Time ◽  
Ethanol Content ◽  
Potential Alternative ◽  
Alkaline Delignification

The enormous global daily consumption of liquid fuels is of the order of 80 million barrels/day (equivalent of 12.7 million m3/day). The sugar cane area required to produce the same volume of ethanol about 700 million hectares, assuming a yield of 6.5 m3/ha/year of ethanol. This study focus to use the second generation feedstock for bioethanol production. Waste papers have cellulose biomass in high percentage  so that can be used as potential alternative biomass feedstock to convert bioethanol. Alkaline delignification was conducted by sodium hydroxide (NaOH) and then hydrolyzed using sulfuric acid (H2SO4) diluted with various concentrations (2%, 2.5%, 3%, 3.5%, 4%, and 5% (v/v) and then fermentation was carried out by Saccharomyces cereviciae with the variation fermentation time (4 days, 5 days, 6 days, 7 days, and 8 days). Ethanol will be produced after separated using evaporation process. The results for the paper inked with the highest ethanol content of 6,12 % (v/v) was obtained at a concentration of 4% sulfuric acid (v / v) and 7 days fermentation time. While the paper without ink obtained the highest ethanol content of 8,13 % (v / v) sulfuric acid at a concentration of 4% (v/v) and 7 days fermentation time

Bioethanol production from the hydrolysate of Palmaria palmata using sulfuric acid and fermentation with brewer’s yeast

2013 ◽  
Vol 26 (1) ◽  
pp. 687-693 ◽  
Author(s):  
Siti Mutripah ◽  
Maria Dyah Nur Meinita ◽  
Ji-Young Kang ◽  
Gwi-Taek Jeong ◽  
AB Susanto ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Palmaria Palmata ◽  
Bioethanol Production ◽  
Brewer’S Yeast ◽  
Brewer's Yeast
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