scholarly journals FEASIBILITY TO PRODUCING SECOND GENERATION BIOETHANOL IN BOLIVIA

2020 ◽  
Vol 51 (1) ◽  
pp. 57-61
Author(s):  
Antonio Gil ◽  
M. Beltran Siñani
Keyword(s):  
Enzymatic Hydrolysis ◽  
Environmental Impact ◽  
Impact Evaluation ◽  
Second Generation ◽  
Reducing Sugars ◽  
Agricultural Waste ◽  
Agricultural Crops ◽  
Bioethanol Production ◽  
Second Generation Bioethanol ◽  
Hydrolysis Of

The bioethanol that is produced worldwide is mostly obtained from agricultural crops such as sugarcane and corn. However, it has negative environmental effects, so the option of producing bioethanol from agricultural waste arises. This work evaluates the feasibility to produce second generation bietanol from oranges residues (peel and bagasse) produced in the province of Chapare, Bolivia. The estimation is carried out from the reducing sugars, determined by the DNS method, individual sugars, determined by HPLC, produced by acidic and enzymatic hydrolysis of the residues. Similarly, the amount of ethanol produced by fermentation of the samples is quantified. Regarding the results obtained, the best alternative in terms of bioethanol production is the enzymatic hydrolysis. An economic and environmental impact evaluation are also included considering the production of bioethanol from real orange residues.

Ionic Liquid 1-Butyl-3-Methylimidazolium Chloride/FeCl3 Pretreatment of Sugarcane Residue for Second Generation Bioethanol Production

2013 ◽  
Vol 275-277 ◽  
pp. 1662-1665 ◽  
Author(s):  
Qiang Li ◽  
Juan Juan Fei ◽  
Xu Ding Gu ◽  
Geng Sheng Ji ◽  
Yang Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Enzymatic Hydrolysis ◽  
Low Temperature ◽  
Second Generation ◽  
Reducing Sugars ◽  
Enzymatic Saccharification ◽  
Cellulosic Biomass ◽  
Candida Shehatae ◽  
Second Generation Bioethanol ◽  
Temperature Pretreatment

This study aims to establish a natural cellulosic biomass pretreatment process using ionic liquid (IL) for efficient enzymatic hydrolysis and second generation bioethanol. The IL 1-Butyl-3-methylimidazolium Chloride/FeCl3 ([Bmim]Cl/FeCl3) was selected in view of its low temperature pretreatment ability and the potential of accelerating enzymatic hydrolysis, and it could be recyclable. The yield of reducing sugars from sugarcane residue pretreated with this IL at 80 oC for 1 h reached 46.8% after being enzymatically hydrolyzed for 24 h. Sugarcane residue regenerated were hydrolyzed more easily than that treated with water. The fermentability of the hydrolyzates, obtained after enzymatic saccharification of the regenerated sugarcane residue, was transformed into bioethanol using Candida shehatae. This microbe could absorb glucose and xylose efficiently, and the ethanol production was 0.38 g/g glucose within 30 h fermentation. In conclusion, the metal ionic liquid pretreatment in low temperature shows promise as pretreatment solvent for natural biomass.

scholarly journals Valorization of Typha Australis Stems in Bioethanol Production Using Enzymatic Hydrolysis and Biofermentation

2019 ◽  
pp. 90-95 ◽  
Author(s):  
Cosme Sagbo Kouwanou ◽  
Cokou Pascal Agbangnan Dossa ◽  
Euloge Sènan Adjou ◽  
Mossi Issiakou ◽  
Valentin Dieudonné Wotto ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Enzymatic Hydrolysis ◽  
Fermentation Process ◽  
Second Generation ◽  
Great Variability ◽  
Bioethanol Production ◽  
Kinetics Parameters ◽  
Second Generation Bioethanol ◽  
Typha Australis ◽  
Active Dry Yeast

The present study aims to valorize the Typha australis stems, through second-generation bioethanol production using enzymatic hydrolysis and fermentation. The monitoring of fermentation kinetics parameters, such as pH, density, length of fermentation, and the Brix, indicated a great variability of these parameters during the fermentation process of the must with three Saccharomyces cerevisiae strains, such as Angel brand Thermal-tolerant alcohol active dry yeast, Angel brand super alcohol active dry yeast and Angel super alcohol active dry yeast in the presence of urea (CON2H4) used as a growth factor. The distillation of musts after fermentation has yielded ethanol extraction rate (% v / v at 20 ° C) between 4.95and 44.93 after fractional distillation. The best performance in ethanolic bioconversion was recorded with Angel brand super alcohol active dry yeast. This Saccharomyces cerevisiae strains could be used as effective ferments, in perspective of intensive production of second-generation bioethanol with Typha australis stems.

scholarly journals Analysis of pretreatments of sugar beet shreds for bioethanol production in respect of cellulose hydrolysis and waste flows

2011 ◽  
pp. 223-230
Author(s):  
Darjana Ivetic ◽  
Vesna Vasic ◽  
Marina Sciban ◽  
Mirjana Antov
Keyword(s):  
Enzymatic Hydrolysis ◽  
Sugar Beet ◽  
Reducing Sugars ◽  
Cellulose Hydrolysis ◽  
Raw Material ◽  
Bioethanol Production ◽  
Lignin Removal ◽  
Chemical Pretreatments ◽  
Hydrolysis Of

This paper analyzes some chemical pretreatments of sugar beet shreds concerning generated waste flows and yield of reducing sugars obtained by enzymatic hydrolysis of pretreated material. Waste flows produced in pretreatments of sugar beet shreds originated from pectin and lignin removal from raw material. Suitability of substrates prepared in single and two-step pretreatment procedure for enzymatic hydrolysis was determined based on the yield of reducing sugars released by cellulase action on them, while different possibilities of processing of wastewaters were discussed based on the characteristic of waste flows.

scholarly journals Optimization of Bioethanol Production from Enzymatic Treatment of Argan Pulp Feedstock

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2516
Author(s):  
Jihane Zeghlouli ◽  
Gwendoline Christophe ◽  
Amine Guendouz ◽  
Cherkaoui El Modafar ◽  
Abdeljalil Belkamel ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Enzymatic Hydrolysis ◽  
Second Generation ◽  
Enzymatic Treatment ◽  
Grinding Process ◽  
Sugar Solution ◽  
Bioethanol Production ◽  
Second Generation Bioethanol ◽  
Argan Oil ◽  
First Time

Argan pulp is an abundant byproduct from the argan oil process. It was investigated to study the feasibility of second-generation bioethanol production using, for the first time, enzymatic hydrolysis pretreatment. Argan pulp was subjected to an industrial grinding process before enzymatic hydrolysis using Viscozyme L and Celluclast 1.5 L, followed by fermentation of the resulting sugar solution by Saccharomyces cerevisiae. The argan pulp, as a biomass rich on carbohydrates, presented high saccharification yields (up to 91% and 88%) and an optimal ethanol bioconversion of 44.82% and 47.16% using 30 FBGU/g and 30 U/g of Viscozyme L and Celluclast 1.5 L, respectively, at 10%w/v of argan biomass.

Economic and environmental impact evaluation of various biomass feedstock for bioethanol production and correlations to lignocellulosic composition

2019 ◽  
Vol 7 ◽  
pp. 100230 ◽  
Author(s):  
Jhuma Sadhukhan ◽  
Elias Martinez-Hernandez ◽  
Myriam A. Amezcua-Allieri ◽  
Jorge Aburto ◽  
J. Amador Honorato S
Keyword(s):  
Environmental Impact ◽  
Impact Evaluation ◽  
Biomass Feedstock ◽  
Bioethanol Production ◽  
Environmental Impact Evaluation

scholarly journals Exploring grape marc as trove for new thermotolerant and inhibitor-tolerant Saccharomyces cerevisiae strains for second-generation bioethanol production

2013 ◽  
Vol 6 (1) ◽  
pp. 168 ◽  
Author(s):  
Lorenzo Favaro ◽  
Marina Basaglia ◽  
Alberto Trento ◽  
Eugéne Van Rensburg ◽  
Maria García-Aparicio ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Second Generation ◽  
Bioethanol Production ◽  
Grape Marc ◽  
Second Generation Bioethanol
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