scholarly journals Bioethanol production from microwave-assisted acid or alkali-pretreated agricultural residues of cassava using separate hydrolysis and fermentation (SHF)

3 Biotech ◽  
2018 ◽  
Vol 8 (1) ◽  
Author(s):  
N. S. Pooja ◽  
M. S. Sajeev ◽  
M. L. Jeeva ◽  
G. Padmaja
Fuel ◽  
2020 ◽  
Vol 279 ◽  
pp. 118435 ◽  
Author(s):  
Kai Ling Yu ◽  
Wei-Hsin Chen ◽  
Herng-Kuang Sheen ◽  
Jo-Shu Chang ◽  
Chih-Sheng Lin ◽  
...  

2020 ◽  
Vol 12 (20) ◽  
pp. 8583
Author(s):  
Monirul Islam Miskat ◽  
Ashfaq Ahmed ◽  
Hemal Chowdhury ◽  
Tamal Chowdhury ◽  
Piyal Chowdhury ◽  
...  

This study reviewed the aspects of the production of bioethanol from the agricultural residues available in Bangladesh. The crop residues such as rice, wheat, sugarcane, corn, cotton, jute, and sugarcane have great potential for energy generation in a sustainable and eco-friendly way in Bangladesh, as these residues are available in large quantities. Bioethanol is an alternative fuel to gasoline that provides comparable performance results. Bioethanol from these residues can be used for transportation purposes, as it does not require any major modifications to the spark-ignition engine configuration when using E5 blend (5% Ethanol mixed with 95% of the gasoline). In Bangladesh, approximately 65.36 Mt of agricultural residues are available from the major crops, from which 32 Mt bioethanol can be generated. This study is expected to provide useful concise data with regards to the beneficial utilization of agricultural residues for bioethanol production in Bangladesh.


2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Sefrinus Maria Dolfi Kolo ◽  
Deana Wahyuningrum ◽  
Rukman Hertadi

The process of acid hydrolysis using conventional methods at high concentrations results in products having lower yields, and it needs a longer time of process; therefore, it becomes less effective. In this study, we analyzed the effects of microwave-assisted pretreatment and cofermentation on bioethanol production from elephant grass (Pennisetum purpureum). We used a combination of delignification techniques and acid hydrolysis by employing a microwave-assisted pretreatment method on elephant grass (Pennisetum purpureum) as a lignocellulosic material. This was followed by cofermentation with Saccharomyces cerevisiae ITB-R89 and Pichia stipitis ITB-R58 to produce bioethanol. The optimal sugar mixtures (fructose and xylose) of the hydrolysis product were subsequently converted into bioethanol by cofermentation with S. cerevisiae ITB-R89 and P. stipitis ITB-R58, carried out with varying concentrations of inoculum for 5 days (48 h) at 30°C and pH 4.5. The high-power liquid chromatographic analysis revealed that the optimal inoculum concentration capable of converting 76.15% of the sugar mixture substrate (glucose and xylose) to 10.79 g/L (34.74% yield) of bioethanol was 10% (v/v). The optimal rate of ethanol production was 0.45 g/L/d, corresponding to a fermentation efficiency of 69.48%.


2014 ◽  
Vol 52 ◽  
pp. 169-176 ◽  
Author(s):  
Raveendran Sindhu ◽  
Mathiyazhakan Kuttiraja ◽  
Parameswaran Binod ◽  
Rajeev K. Sukumaran ◽  
Ashok Pandey

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