Preparation and characterization of cassava starch-based adsorbents for separating of azeotropic ethanol-water in biofuels ethanol production

2015 ◽  
Vol 91 (4) ◽  
pp. 977-984 ◽  
Author(s):  
Hong Li ◽  
Yiming Liu ◽  
Xin Gao ◽  
Xingang Li
Keyword(s):  
Ethanol Production ◽  
Cassava Starch

scholarly journals Single-step ethanol production from raw cassava starch using a combination of raw starch hydrolysis and fermentation, scale-up from 5-L laboratory and 200-L pilot plant to 3000-L industrial fermenters

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Morakot Krajang ◽  
Kwanruthai Malairuang ◽  
Jatuporn Sukna ◽  
Krongchan Rattanapradit ◽  
Saethawat Chamsart
Keyword(s):  
Ethanol Production ◽  
Ethanol Concentration ◽  
Consolidated Bioprocessing ◽  
Scale Up ◽  
Cassava Starch ◽  
Single Step ◽  
Starch Hydrolysis ◽  
Yield Coefficient ◽  
Raw Starch ◽  
Raw Starch Hydrolysis

Abstract Background A single-step ethanol production is the combination of raw cassava starch hydrolysis and fermentation. For the development of raw starch consolidated bioprocessing technologies, this research was to investigate the optimum conditions and technical procedures for the production of ethanol from raw cassava starch in a single step. It successfully resulted in high yields and productivities of all the experiments from the laboratory, the pilot, through the industrial scales. Yields of ethanol concentration are comparable with those in the commercial industries that use molasses and hydrolyzed starch as the raw materials. Results Before single-step ethanol production, studies of raw cassava starch hydrolysis by a granular starch hydrolyzing enzyme, StargenTM002, were carefully conducted. It successfully converted 80.19% (w/v) of raw cassava starch to glucose at a concentration of 176.41 g/L with a productivity at 2.45 g/L/h when it was pretreated at 60 °C for 1 h with 0.10% (v/w dry starch basis) of Distillase ASP before hydrolysis. The single-step ethanol production at 34 °C in a 5-L fermenter showed that Saccharomyces cerevisiae (Fali, active dry yeast) produced the maximum ethanol concentration, pmax at 81.86 g/L (10.37% v/v) with a yield coefficient, Yp/s of 0.43 g/g, a productivity or production rate, rp at 1.14 g/L/h and an efficiency, Ef of 75.29%. Scale-up experiments of the single-step ethanol production using this method, from the 5-L fermenter to the 200-L fermenter and further to the 3000-L industrial fermenter were successfully achieved with essentially good results. The values of pmax,Yp/s, rp, and Ef of the 200-L scale were at 80.85 g/L (10.25% v/v), 0.42 g/g, 1.12 g/L/h and 74.40%, respectively, and those of the 3000-L scale were at 70.74 g/L (8.97% v/v), 0.38 g/g, 0.98 g/L/h and 67.56%, respectively. Because of using raw starch, major by-products, i.e., glycerol, lactic acid, and acetic acid of all three scales were very low, in ranges of 0.940–1.140, 0.046–0.052, 0.000–0.059 (% w/v), respectively, where are less than those values in the industries. Conclusion The single-step ethanol production using the combination of raw cassava starch hydrolysis and fermentation of three fermentation scales in this study is practicable and feasible for the scale-up of industrial production of ethanol from raw starch.

Characterization of Nigerian Clay as Porous Ceramic Material

2013 ◽  
Vol 845 ◽  
pp. 256-260 ◽  
Author(s):  
M. Abubakar ◽  
A.B. Aliyu ◽  
Norhayati Ahmad
Keyword(s):  
Thermal Properties ◽  
Bulk Density ◽  
Sintering Temperature ◽  
Starch Content ◽  
Porous Ceramic ◽  
Porous Ceramics ◽  
Cassava Starch ◽  
Compaction Method ◽  
Percentage Porosity

Porous ceramics were produced by compaction method of Nigerian clay and cassava starch. The samples were prepared by adding an amount from 5 to 30%wt of cassava starch into the clay and sintered at temperature of 900-1300°C. The influence of cassava starch content on the bulk density and apparent porosity was studied. The result of XRD and DTA/TGA shows that the optimum sintering temperature was found to be 1300°C. The percentage porosity increased from 12.87 to 43.95% while bulk density decreased from 2.16 to 1.46g/cm3 with the increase of cassava starch from 5 to 30%wt. The effect of sintering temperature and cassava starch content improved the microstructure in terms of porosity and the thermal properties of porous clay for various applications which requires a specific porosity.

Synthesis and Characterization of Foamed Cassava Starch Material

2012 ◽  
Vol 262 ◽  
pp. 405-409
Author(s):  
Yang Liu ◽  
Shan Shan Li ◽  
Xin Yan Yang ◽  
Chong Xing Huang
Keyword(s):  
Reaction Time ◽  
Cassava Starch ◽  
Synthesis And Characterization ◽  
Compression Stress ◽  
Static Compression ◽  
Foaming Agent ◽  
New Type ◽  
Analysis System ◽  
Central Composite

A new-type foam composites were fabricated by baking method from a mixture of cassava starch. A central composite design was constructed using the software Statistics Analysis System 9.0 to evaluate the static compression stress of foamed material. The optimum dosages of adhesive, foaming agent, catalyst were 2.0g, 6.0g, 2.4g, respectively; reaction temperature 65°C; reaction time 16 hour.

Preparation and characterization of biodegradable cassava starch thin films for potential food packaging applications

Cellulose ◽  
2021 ◽  
Author(s):  
Sumedha M. Amaraweera ◽  
Chamila Gunathilake ◽  
Oneesha H. P. Gunawardene ◽  
Nimasha M. L. Fernando ◽  
Drashana B. Wanninayaka ◽  
...  
Keyword(s):  
Thin Films ◽  
Food Packaging ◽  
Cassava Starch ◽  
Potential Food

scholarly journals Preparation and Characterization of Cassava Leaves/ Cassava Starch Acetate Biocomposite Sheets

BioResources ◽  
2015 ◽  
Vol 10 (3) ◽  
Author(s):  
Noor Fadzliana Ahmad Sharif ◽  
Saiful Izwan Abd Razak ◽  
Wan Aizan Wan Abdul Rahman ◽  
Nadirul Hasraf Mat Nayan ◽  
Abdul Razak Rahmat ◽  
...  
Keyword(s):  
Cassava Starch ◽  
Starch Acetate ◽  
Cassava Leaves

scholarly journals Ethanol production from cassava starch by protoplast fusants of Wickerhamomyces anomalus and Galactomyces candidum

2020 ◽  
Vol 7 (1) ◽  
pp. 67-81
Author(s):  
Tolulope Modupe Adeleye ◽  
Sharafadeen Olateju Kareem ◽  
Mobolaji O. Bankole ◽  
Olusegun Atanda ◽  
Abideen I. Adeogun
Keyword(s):  
Ethanol Production ◽  
Cassava Starch ◽  
Wickerhamomyces Anomalus

Preparation and characterization of cassava starch acetate with high substitution degree

2020 ◽  
Vol 100 ◽  
pp. 105430 ◽  
Author(s):  
Pamela Cuenca ◽  
Sergio Ferrero ◽  
Oscar Albani
Keyword(s):  
Cassava Starch ◽  
Starch Acetate ◽  
Substitution Degree
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