Lychee-Derived, Thermotolerant Yeasts: Potential for Ethanol Production

2021 ◽  
Author(s):  
Phu Nguyen Van ◽  
Khanh Hoang Viet Nguyen ◽  
Tien Ngo Anh ◽  
Xuan Tuy Thi Ho ◽  
Tuan Le Cong ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Thermotolerant Yeasts

Ethanol production from molasses at high temperature by thermotolerant yeasts isolated from cocoa

2016 ◽  
Vol 03 ◽  
pp. 32 ◽  
Author(s):  
Phong, H.X. ◽  
Nitiyon, S. ◽  
Giang, N.T.C. ◽  
Yamada, M. ◽  
Thanonkeo, P. ◽  
...  
Keyword(s):  
High Temperature ◽  
Ethanol Production ◽  
Thermotolerant Yeasts

Compost as an untapped niche for thermotolerant yeasts capable of high‐temperature ethanol production

2021 ◽  
Author(s):  
Rameshwar Avchar ◽  
Vikram Lanjekar ◽  
Prashant K. Dhakephalkar ◽  
Sumit Singh Dagar ◽  
Abhishek Baghela
Keyword(s):  
High Temperature ◽  
Ethanol Production ◽  
Thermotolerant Yeasts

scholarly journals A new search for thermotolerant yeasts, its characterization and optimization using response surface methodology for ethanol production

2015 ◽  
Vol 6 ◽  
Author(s):  
Richa Arora ◽  
Shuvashish Behera ◽  
Nilesh K. Sharma ◽  
Sachin Kumar
Keyword(s):  
Response Surface Methodology ◽  
Ethanol Production ◽  
Response Surface ◽  
Thermotolerant Yeasts

scholarly journals Studies on Bioethanol Production with Thermo Tolerant Yeast Isolates and their Co-Cultures using African Wild Cocoyam as Feedstock

2021 ◽  
pp. 1-10
Author(s):  
I. Nnamchi Chukwudi ◽  
U. Nwachi OkeChukwu ◽  
A. Ndubuisi Ifeanyi ◽  
C. Amadi Onyetugo
Keyword(s):  
Ethanol Production ◽  
Kluyveromyces Marxianus ◽  
Pichia Stipitis ◽  
Peak Time ◽  
Bioethanol Production ◽  
Glucose Yield ◽  
Yeast Cultures ◽  
Thermotolerant Yeasts ◽  
Starchy Food ◽  
The Individual

In this work different ways of optimally producing bioethanol at various pH with thermotolerant yeasts and their cocultures using a non-human edible starchy food as feedstock was examined. African wild cocoyam, Xanthosoma roseum, sourced from abandoned farmlands in Obukpa, Nsukka, Nigeria was used as the substrate, while strains of Kluyveromyces marxianus and Pichia stipitis were used to ferment them. First the tubers were gelatinized by boiling under pressure above 100oC before hydrolysis with concentrated H2SO4. The hydrolysates were then fermented at 35oC with the thermotolerant yeasts for five days at different pH. Results obtained showed that gelatinized sample of the substrate gave optimum glucose yield when hydrolysed with 1M H2SO4 for 60 minutes. Kluyveromyces marxianus produced more ethanol than Pichia stipitis at all the four fermentation pH values tested. However, optimum ethanol production was obtained when the two yeast strains were used as coculture at pH 4.5. The peak time for ethanol production was 96 hours for the individual yeast cultures while that of their coculture was 72 hours. The results of the study indicated that wild cocoyam is an excellent feedstock for bioethanol production with many advantages including being non-edible, thereby eliminating concerns for food security, and containing high amount of carbohydrate. The study also revealed that fermenting sugar hydrolysates with a coculture of microorganisms during bioethanol production is a more efficient process than using individual cultures.

DECOLOURIZATION AND COD REMOVAL OF WASEWATER FROM ETHANOL PRODUCTION PROCESS FROM MOLASSES BY COAGULANTION USING INORGANIC ALUM

2010 ◽  
Vol 13 (3) ◽  
pp. 92-102
Author(s):  
Trung Duc Le
Keyword(s):  
Ethanol Production ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Treated Wastewater ◽  
Treatment Processes ◽  
Physico Chemical ◽  
Biological Methods ◽  
Treatment Step ◽  
Main Material

The industrial production of ethanol by fermentation using molasses as main material that generates large quantity of wastewater. This wastewater contains high levels of colour and chemical oxygen demand (COD), that may causes serious environmental pollution. Most available treatment processes in Vietnam rely on biological methods, which often fail to treat waste water up to discharge standard. As always, it was reported that quality of treated wastewater could not meet Vietnameses discharge standard. So, it is necessary to improve the treatment efficiency of whole technological process and therefore, supplemental physico-chemical treatment step before biodegradation stage should be the appropriate choice. This study was carried out to assess the effect of coagulation process on decolourization and COD removal in molasses-based ethanol production wastewater using inorganic coaglutant under laboratory conditions. The experimental results showed that the reductions of COD and colour with the utilization of Al2(SO4)3 at pH 9.5 were 83% and 70%, respectively. Mixture FeSO4 – Al2(SO4)3 at pH 8.5 reduced 82% of colour and 70% of COD. With the addition of Polyacrylamide (PAM), the reduction efficiencies of colour, COD and turbidity by FeSO4 – Al2(SO4)3 were 87%, 73.1% and 94.1% correspondingly. It was indicated that PAM significantly reduced the turbidity of wastewater, however it virtually did not increase the efficiencies of colour and COD reduction. Furthermore, the coagulation processes using PAM usually produces a mount of sludge which is hard to be deposited.

Feasibility of solar assisted ethanol production

1981 ◽  
Author(s):  
M. HOLDEN ◽  
A. SHEKAR ◽  
T. SMITH
Keyword(s):  
Ethanol Production
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