scholarly journals Potential of Bran from Two Varieties of Rice (Oryza) Spp for Bioethanol Production

2020 ◽  
pp. 1-9
Author(s):  
Hadiza Musa ◽  
Abdullahi Imam Abdullahi ◽  
Rabi’a Ibrahim El-Yakub ◽  
Ibrahim Alhaji Yerima
Keyword(s):  
Rice Bran ◽  
Second Generation ◽  
Lignin Content ◽  
Cellulosic Biomass ◽  
Bioethanol Production ◽  
Agricultural Residue ◽  
Pretreatment Condition ◽  
Mucor Indicus ◽  
Bioethanol Yield ◽  
Second Generation Ethanol

Second generation ethanol is produced from non-food based including waste from food crops, wood chips and agricultural residue. Lignocellulosic and starchy materials in them are converted to fermentable sugars which are further processed to produce bioethanol. Rice bran is an agricultural residue with abundant carbohydrate for bioconversion into ethanol. This study was designed to evaluate the potential of two varieties of rice bran (Sipi and Wita) to produce bioethanol. Compositional analysis of Wita rice bran showed 40% cellulose, 23% hemicellulose and 16% lignin content. Sipi variety contains 35% cellulose, 27% hemicellulose and 13% lignin content. Sodium hydroxide pretreatment was carried out at different concentrations (0.5%, 1%, 2% and 3%) and residence time of (15, 30, 60, and 90min). It was observed from the present study, pretreatment of rice bran with 2% NaOH for 90min is considered as effective pretreatment condition for bioethanol production from rice bran. Simultaneous saccharification and fermentation of cellulosic biomass was carried out for 72h with Saccharomyces cerevisae and Mucor indicus. Fermentation of Wita variety with S.cerevisiae produced highest bioethanol yield of 1.36% while Mucor indicus produced 0.75% bioethanol yield. From the result of these findings, it can be concluded that rice bran could be considered as a promising substrate for the fermentation of second generation ethanol.

scholarly journals Potential of Bran from Two Varieties of Rice (Oryza) Spp for Bioethanol Production

2020 ◽  
pp. 1-9
Author(s):  
Hadiza Musa ◽  
Abdullahi Imam Abdullahi ◽  
Rabi’a Ibrahim El-Yakub ◽  
Ibrahim Alhaji Yerima
Keyword(s):  
Rice Bran ◽  
Second Generation ◽  
Lignin Content ◽  
Cellulosic Biomass ◽  
Bioethanol Production ◽  
Agricultural Residue ◽  
Pretreatment Condition ◽  
Mucor Indicus ◽  
Bioethanol Yield ◽  
Second Generation Ethanol

Second generation ethanol is produced from non-food based including waste from food crops, wood chips and agricultural residue. Lignocellulosic and starchy materials in them are converted to fermentable sugars which are further processed to produce bioethanol. Rice bran is an agricultural residue with abundant carbohydrate for bioconversion into ethanol. This study was designed to evaluate the potential of two varieties of rice bran (Sipi and Wita) to produce bioethanol. Compositional analysis of Wita rice bran showed 40% cellulose, 23% hemicellulose and 16% lignin content. Sipi variety contains 35% cellulose, 27% hemicellulose and 13% lignin content. Sodium hydroxide pretreatment was carried out at different concentrations (0.5%, 1%, 2% and 3%) and residence time of (15, 30, 60, and 90min). It was observed from the present study, pretreatment of rice bran with 2% NaOH for 90min is considered as effective pretreatment condition for bioethanol production from rice bran. Simultaneous saccharification and fermentation of cellulosic biomass was carried out for 72h with Saccharomyces cerevisae and Mucor indicus. Fermentation of Wita variety with S.cerevisiae produced highest bioethanol yield of 1.36% while Mucor indicus produced 0.75% bioethanol yield. From the result of these findings, it can be concluded that rice bran could be considered as a promising substrate for the fermentation of second generation ethanol.

scholarly journals Evaluation of polyploid miscanthus lines usage efficiency as a feedstock for bioethanol production

2021 ◽  
Vol 29 ◽  
pp. 13-19
Author(s):  
R. Y. Blume ◽  
O.V. Melnychuk ◽  
S.P. Ozheredov ◽  
D.B. Rakhmetov ◽  
Y.B. Blume
Keyword(s):  
Sweet Sorghum ◽  
Second Generation ◽  
Ethanol Yield ◽  
Bioenergy Crops ◽  
Control Line ◽  
Bioethanol Production ◽  
Second Generation Bioethanol ◽  
Giant Miscanthus ◽  
First And Second Generation ◽  
Bioethanol Yield

Aim. Main aim of this research was the evaluation of theoretical bioethanol yield (per ha) from hexaploid giant miscanthus (Miscanthus х giganteus) and further comparison with conventional triploid form as well as with other bioethanol crops. Methods. Several mathematic functions were determined that describe yearly yield dynamics and equations, which were used in calculations of theoretical bioethanol yield. Results. The theoretical bioethanol yield was evaluated for different hexaploid miscanthus lines. The most productive in terms of ethanol yield were lines 108 and 202, from which potential bioethanol yield was found to be higher than in control line (6451 L/ha) by 10.7 % and 14.2% respectively and can reach 7144 L/ha and 7684 L/ha. Conclusions. It was determined that the most productive lines of polyploid miscanthus (lines 108 and 202) are able to compete with other plant cellulosic feedstocks for second-generation bioethanol production in Ukraine. However, these lines show bioethanol productivity than sweet sorghum, in the case when sweet sorghum is processed for obtainment of both first- and second-generation bioethanol. Keywords: bioenergy crops, biofuels, giant miscanthus, Miscanthus, polyploidy, second-generation bioethanol.

scholarly journals Lignin as Co-product of Second Generation Bioethanol Production from Ligno-cellulosic Biomass

2014 ◽  
Vol 45 ◽  
pp. 52-60 ◽  
Author(s):  
Franco Cotana ◽  
Gianluca Cavalaglio ◽  
Andrea Nicolini ◽  
Mattia Gelosia ◽  
Valentina Coccia ◽  
...  
Keyword(s):  
Second Generation ◽  
Cellulosic Biomass ◽  
Bioethanol Production ◽  
Second Generation Bioethanol

scholarly journals Bioethanol production of second generation from corn cob

2021 ◽  
pp. 29-33
Author(s):  
Fabiola Sandoval-Salas ◽  
Carlos Méndez-Carreto ◽  
Christell Barrales-Fernández ◽  
Graciela Ortega-Avila
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Carbon Source ◽  
Second Generation ◽  
Culture Media ◽  
Lignin Content ◽  
Cellulose Content ◽  
Lignocellulosic Materials ◽  
Bioethanol Production ◽  
Corn Cob ◽  
Theoretical Yield

Bioethanol production from lignocellulosic materials has several environmental and economic advantages. In this work, corn cob was used to produce ethanol by fermentation. The cob was grounded, hydrolyzed chemically, and then enzymatically. Later, hydrolysates were used as a carbon source to formulate culture media that were inoculated with Saccharomyces cerevisiae; hollocellulose content was quantified by the ASTM D-1104 method; cellulose content by the TAPPTI 212 method; lignin content by the NREL / TP-510-42618 method; and ethanol was quantified by HPLC. In fermentation, bioethanol yields of up to 3.5 g / L were found, equivalent to YP/S value of 0.46, representing approximately 90% of the theoretical yield.

Evaluating the Potential of Culms from Sugarcane and Energy Cane Varieties Grown in Argentina for Second-Generation Ethanol Production

2021 ◽  
Author(s):  
Aissata Ousmane Kane ◽  
Vanessa O. Arnoldi Pellergini ◽  
Melissa C. Espirito Santo ◽  
Balla Diop Ngom ◽  
José M. García ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Second Generation ◽  
Energy Cane ◽  
Second Generation Ethanol

scholarly journals Exergy efficiency of thermochemical syngas-to-ethanol production plants

2021 ◽  
Vol 3 (5) ◽  
Author(s):  
Marcos Paulo Gabriel da Costa e Silva ◽  
Júlio Cesar de Carvalho Miranda
Keyword(s):  
Ethanol Production ◽  
Process Improvement ◽  
Second Generation ◽  
Exergy Efficiency ◽  
Exergy Destruction ◽  
Exothermic Reactions ◽  
Production Processes ◽  
Different Temperatures ◽  
Exergy Analyses ◽  
Second Generation Ethanol

Abstract This work presents exergy analyses applied in four different conceptual second-generation ethanol production processes through a thermochemical route using catalysts based on Molybdenum (P-1), Copper (P-2), and Rhodium (P-3 and P-4), aiming to assess their exergetic efficiencies. The results show that the conceptual processes have satisfactory exergy efficiencies in both cases, when compared among themselves and when compared with other processes reported in literature. The processes’ efficiency for P-1, P-2, P-3 and P-4 were, respectively, 52.4%, 41.4%, 43.7% and 48.9%. The reactors were the sections in which exergy destruction was more significant, due to the exothermic reactions and mixing points (where streams with different temperatures were mixed). Such results show the potential of thermochemical ethanol production, besides opening the possibilities of process improvement. Graphic abstract

Assessing the sugarcane bagasse and straw as a biofuel to propel light vehicles

2021 ◽  
Author(s):  
Rubens Eliseu Nicula de Castro ◽  
Rita MB Alves ◽  
Cláudio Augusto Oller Nascimento
Keyword(s):  
Sugarcane Bagasse ◽  
Second Generation ◽  
Energy Carriers ◽  
Sugarcane Production ◽  
Second Generation Ethanol

Sugarcane bagasse and straw are the residues from sugarcane production. They can be used to produce electricity, second-generation ethanol, and biogas. These three kinds of fuel are energy carriers that...

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