Microwave assisted alkaline pretreatment to enhance enzymatic saccharification of catalpa sawdust

2016 ◽  
Vol 221 ◽  
pp. 26-30 ◽  
Author(s):  
Shuguang Jin ◽  
Guangming Zhang ◽  
Panyue Zhang ◽  
Fan Li ◽  
Siqi Wang ◽  
...  
Keyword(s):  
Enzymatic Saccharification ◽  
Alkaline Pretreatment ◽  
Microwave Assisted

Enhanced production of reducing sugars from paragrass using microwave-assisted alkaline pretreatment

2020 ◽  
Author(s):  
Sasikarn Nuchdang ◽  
Vipa Thongtus ◽  
Maneerat Khemkhao ◽  
Suchata Kirdponpattara ◽  
Elvin J. Moore ◽  
...  
Keyword(s):  
Reducing Sugars ◽  
Alkaline Pretreatment ◽  
Microwave Assisted ◽  
Enhanced Production

Short duration microwave assisted pretreatment enhances the enzymatic saccharification and fermentable sugar yield from sugarcane bagasse

2012 ◽  
Vol 37 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Parameswaran Binod ◽  
Karri Satyanagalakshmi ◽  
Raveendran Sindhu ◽  
Kanakambaran Usha Janu ◽  
Rajeev K. Sukumaran ◽  
...  
Keyword(s):  
Short Duration ◽  
Sugarcane Bagasse ◽  
Enzymatic Saccharification ◽  
Sugar Yield ◽  
Fermentable Sugar ◽  
Microwave Assisted

scholarly journals Improving enzymatic saccharification of cassava stem using peroxide and microwave assisted pre-treatment techniques

2017 ◽  
Vol 23 (3) ◽  
pp. 357-366 ◽  
Author(s):  
A. Sudha ◽  
V. Sivakumar ◽  
V. Sangeetha ◽  
Devi Priyenka
Keyword(s):  
Chemical Structure ◽  
Treatment Time ◽  
Enzymatic Saccharification ◽  
Spectral Studies ◽  
Ahp Method ◽  
Treatment Methods ◽  
Microwave Assisted ◽  
Treatment Techniques ◽  
Pre Treatment ◽  
Cassava Stem

The effectiveness of microwave assisted alkali (MAA) and alkaline hydrogen peroxide (AHP) pre-treatment methods in improving the enzymatic saccharification of cassava stem was investigated. Ground cassava stems were by MAA method by varying microwave power, NaOH concentration and pre-treatment time. AHP method was performed at various H2O2 concentrations, pre-treatment temperatures and times. The results showed that reducing sugar yield was higher from MAA pretreated stem when compared with AHP pre-treatment, which demonstrated that MAA pre-treatment was effective in releasing sugars. SEM studies on the pre-treated samples revealed extensive distortion of fibres in MAA pre-treated than AHP pre-treated samples, which showed pores and cracks in the fibrous structure. Spectral studies showed the change in the chemical structure of pre-treated samples. The work revealed that the studied pre-treatment methods were effective in improving the enzymatic saccharification of cassava stem.

scholarly journals Microwave Assisted Alkaline Pretreatment of Algae Waste in the Production of Cellulosic Bioethanol

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5891
Author(s):  
Rocío Maceiras ◽  
Víctor Alfonsín ◽  
Luis Seguí ◽  
Juan F. González
Keyword(s):  
Microwave Power ◽  
Reducing Sugars ◽  
Irradiation Time ◽  
Alkaline Pretreatment ◽  
Liquid Ratio ◽  
Fermentation Efficiency ◽  
Microwave Assisted ◽  
Microwave Effect ◽  
Solid Liquid ◽  
Bioethanol Yield

Biomass pretreatment has an important role in the production of cellulosic bioethanol. In this study, the effectiveness of microwave assisted alkaline pretreatment of algae waste was analysed. After pretreatment, the product was hydrolysed using sulphuric acid. The effects of microwave power, irradiating time, solid–liquid ratio and NaOH concentration were examined. Under the best conditions, the fermentable sugars were converted to cellulosic bioethanol using Saccharomyces Cerevisiae with a bioethanol yield of 1.93 ± 0.01 g/g and a fermentation efficiency of 40.4%. The reducing sugars concentration was 30% higher than that obtained from conventional hydrolysis without pretreatment. The obtained results suggest that microwave assisted alkaline pretreatment is effective in improving the production of cellulosic bioethanol of algae waste compared to that without microwave effect. Considering energy consumption, low microwave power and short microwave irradiation time are favourable for this pretreatment.

Recycling of Black Liquor Generated from Cellulosic Ethanol Process for Plant Growth

2020 ◽  
Vol 14 (4) ◽  
pp. 511-516
Author(s):  
Changzhong Song ◽  
Bowen Zhang ◽  
Wen Wang ◽  
Xuesong Tan ◽  
Zahoor ◽  
...  
Keyword(s):  
Plant Growth ◽  
Ethanol Production ◽  
Cellulosic Ethanol ◽  
Black Liquor ◽  
Enzymatic Saccharification ◽  
Dry Weight ◽  
Alkaline Pretreatment ◽  
Solid Loading ◽  
Solid Ratio ◽  
Saccharification Efficiency

The alkaline pretreatment has the advantages of low energy input and atmospheric pressure to highly enhance the conversion of lignocellulose to ethanol. However, the black liquor from the process would pollute the environment, which hinders its industrial application. This study selected the potassium hydroxide (KOH) as the alkaline reagent for lignocellulosic pretreatment and investigated the feasibility of recycling the black liquor (BL) as molecular bio-activator for plant growth. After optimization of KOH pretreatment, the enzymatic saccharification efficiency of rice straw achieved to 86.6% under the optimum condition of 2% KOH, 15:1 of liquid–solid ratio, 70 °C for 1 h. The ethanol production and conversion ratio was 32.24 g/L and 53.0% respectively at 20% solid loading. The tobacco cultured in the nutrient solution with BL was more luxuriant than that without BL, of which the dry weight of plant increased 367% and the leaf area increment of tobacco was about 2∼4 times than the control after 30 days. Thus this study provided a promising way to accelerate the industrialization of alkaline pretreatment for cellulosic ethanol production.

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