scholarly journals Bioethanol production from cassava peels using different microbial inoculants

2016 ◽  
Vol 15 (30) ◽  
pp. 1608-1612 ◽  
Author(s):  
Chibuzor Obianwa ◽  
A Uyoh Edak ◽  
Igile Godwin
Keyword(s):  
Bioethanol Production ◽  
Microbial Inoculants ◽  
Cassava Peels

Wet oxidation pretreatment effect for enhancing bioethanol production from cassava peels, water hyacinth, and green algae (Ulva)

2020 ◽  
Author(s):  
Yaovi Sylvestre Ahou ◽  
Margareta Novia Asih Christami ◽  
Sary Awad ◽  
Cindy Rianti Priadi ◽  
Lamine Baba-Moussa ◽  
...  
Keyword(s):  
Green Algae ◽  
Water Hyacinth ◽  
Wet Oxidation ◽  
Bioethanol Production ◽  
Pretreatment Effect ◽  
Cassava Peels

scholarly journals Experimental determination of the effects of pretreatment on selected Nigerian lignocellulosic biomass in bioethanol production

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Adeolu A. Awoyale ◽  
David Lokhat
Keyword(s):  
Lignocellulosic Biomass ◽  
Sugar Cane ◽  
Sugar Cane Bagasse ◽  
Crystalline Cellulose ◽  
Cellulose Content ◽  
Bioethanol Production ◽  
Rice Husks ◽  
Pore Characteristics ◽  
Corn Cobs ◽  
Cassava Peels

AbstractIn the present study, five lignocellulosic biomass namely, corn cobs (Zea mays), rice husks (Oryza sativa), cassava peels (Manihot esculenta), sugar cane bagasse (Saccharum officinarum), and white yam peels (Dioscorea rotundata) of two mesh sizes of 300 and 425 microns and a combination of some and all of the biomass were pretreated using combined hydrothermal and acid-based, combined hydrothermal and alkali-based and hydrothermal only processes. The raw and pretreated biomass were also characterized by Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), X-Ray diffraction (XRD), and Scanning electron microscopy (SEM) to determine the effects of the various pretreatments on the biomass being studied. The cellulose values of the raw biomass range from 25.8 wt% for cassava peels biomass to 40.0 wt% for sugar cane bagasse. The values of the cellulose content increased slightly with the pretreatment, ranging from 33.2 to 43.8 wt%. The results of the analysis indicate that the hydrothermal and alkaline-based pretreatment shows more severity on the different biomass being studied as seen from the pore characteristics results of corn cobs + rice husks biomass, which also shows that the combination of feedstocks can effectively improve the properties of the biomass in the bioethanol production process. The FTIR analysis also showed that the crystalline cellulose present in all the biomass was converted to the amorphous form after the pretreatment processes. The pore characteristics for mixed corn cobs and rice husks biomass have the highest specific surface area and pore volume of 1837 m2/g and 0.5570 cc/g respectively.

scholarly journals Bioethanol Production from Cassava Peels Inoculated with Saccharomyces cerevisiae and Zymomonas mobilis

2021 ◽  
pp. 58-67
Author(s):  
Kehinde Tope Adegbehingbe ◽  
Foluso Faparusi ◽  
Bartholomew Saanu Adeleke
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Chemical Composition ◽  
Zymomonas Mobilis ◽  
Ph Value ◽  
Control Sample ◽  
Reducing Sugar ◽  
Bioethanol Production ◽  
Transportation Fuel ◽  
Cassava Peels ◽  
Cassava Peel

Aim: This study was designed to determine the bioethanol production from fermented cassava peel using Saccharomyces cerevisiae and Zymomonas mobilis. Methodology: Cassava peels were collected from cassava processing sites, washed, surface sterilized, dried, milled into flour, pretreated, and fermented. Saccharomyces cerevisiae and Z. mobilis suspensions were aseptically inoculated into the fermenting medium and allowed to stand for seven days. The pH, total reducing sugar, chemical composition, and bioethanol composition of the fermenting substrates were determined. Results: A pH decrease from 5.2 to 4.1 was recorded in the sample fermented with S. cerevisiae while the least pH value of 3.8 was obtained from the sample fermented with Z. mobilis, respectively. The total reducing sugar (glucose) of fermented samples decreased from 3.4% to 1.5% (Z. mobilis) and 3.4% to 1.88% (S. cerevisiae) compared with the control sample. The chemical composition showed high protein and fat contents in the fermented samples. High percentage yield of 30% with ethanol volume of 45 mL was recovered from cassava peel inoculated with S. cerevisiae while flash point, i.e. the lowest temperature at which fuel produces enough vapor to cause ignition leading to flame generation of 24oC, was recorded for both fermented samples inoculated with S. cerevisiae and Z. mobilis. Conclusion: The ability of the bacterium and the yeast isolates exhibiting high potential for bioethanol production could be promising in various industrial processes as an alternative to fossil transportation fuel.

scholarly journals Optimization of bioethanol production from cassava peels

2021 ◽  
Vol 24 (12) ◽  
pp. 2077-2083
Author(s):  
S.O. Osemwengie ◽  
E.I. Osagie ◽  
B. Onwukwe
Keyword(s):  
Incubation Time ◽  
Ethanol Yield ◽  
Bioethanol Production ◽  
Enzyme Loading ◽  
Hydrolysis Time ◽  
Total Carbohydrate ◽  
Total Carbohydrate Content ◽  
Cassava Peels ◽  
Cassava Peel ◽  
Simultaneous Saccharification

The bioethanol production from waste is acquiring attraction as a strategy for increasing energy security. This study aims to optimize the production of ethanol from cassava peel using Box Bhenken experimental design. The total carbohydrate content of about 90% in cassava peel was subjected to enzymatic hydrolysis using Alpha-amylase followed by Simultaneous Saccharification and Fermentation (SSF) by Saccharomyces cerevisiae for bioethanol production. The production of bioethanol from cassava peels was investigated for 1-4 hours (hydrolysis time), 0.5–1.5mg/L (enzyme loading), and 1-5 days (incubation time). A statistical model was developed and validated to predict the yield of bioethanol after fermentation, and the Response Surface Methodology (RSM) was used to optimize the conditions. The results revealed that the maximum ethanol yield of 1.911% was obtained at the optimum hydrolysis time, enzyme loading, and incubation time (i.e. 2.5 hours, 1 mg/L, and 3 days respectively).

Exploration of the Bioethanol Yield of Single and Multi-Substrate Biomass from Cassava Processing Wastes

2019 ◽  
Vol 45 (3) ◽  
pp. 305-314
Author(s):  
D.O. Bolade ◽  
G.R.E.E. Ana ◽  
S.A. Lateef ◽  
A.A. Sokan-Adeaga
Keyword(s):  
Ethanol Yield ◽  
Physicochemical Characterization ◽  
Bioethanol Production ◽  
Nitrogen And Phosphorus ◽  
Wide Availability ◽  
Processing Wastes ◽  
Total Reducing Sugars ◽  
Cassava Wastewater ◽  
Cassava Peels

Cassava processing generates large quantities of wastes which contribute significantly to environmental pollution. These wastes are abundant and inexpensive feedstock for bioethanol production that are available all year round in every region in Nigeria. Despite their wide availability, optimal generation of bioethanol from these wastes has not been achieved. This study explored the bioethanol yielding potential of single and multi-substrates biomass from cassava processing wastes. Physicochemical characterization of the cassava processing wastes viz: cassava peels (Cp), cassava pulp (Cpu) and cassava wastewater (Cw) revealed the followings: low pH, cyanide, high total organic carbon and organic matter; low total nitrogen and phosphorus content. Among the single substrates, cassava peels (Cp) gave the highest glucose yield (GY), (48.04 mg/g) and total reducing sugars (TRS), (103.44 mg/g) respectively; while the combination of cassava peel, pulp (Cpu) and wastewater (Cw) (CpCpuCw) gave the highest GY (61.67±0.03mg/g) and TRS (111.36±0.04mg/g) among the multi-substrates. The ethanol yield obtained from the substrates at 24 hours, 48 hours and 72 hours of fermentation were: Cp (337.5m3/kg, 354.0m3/kg and 348.6m3/kg), Cpu (249.4m3/kg, 270.6m3/kg and 264.6m3/kg), Cw (86.2m3/kg, 109.2m3/kg and 109.0m3/kg), CpCpu (352.3m3/kg, 386.9m3/kg and 381.5m3/kg), CpCw(339.0m3/kg, 370.6m3/kg and 359.4m3/kg), CpuCw (267.9m3/kg, 279.5m3/kg and 271.2m3/kg), and CpCpuCw (408.7m3/kg, 427.5m3/kg and 410.6m3/kg) respectively. The study revealed that the combination of the three wastes (CpCpuCw) produced the highest GY/TRS and yield of bioethanol among the substrates, while the maximum ethanol yield was obtained at 48 hours of fermentation. Hence bioethanol production from multi-substrates biomass of cassava processing wastes should be fully explored.

ACCEPTABILITY AND UTILIZATION OF GRADED LEVELS OF GMELINA ARBOREA AND CASSAVA PEELS CONCENTRATES IN WEST AFRICAN DWARF SHEEP

2015 ◽  
Vol 4 (2) ◽  
pp. 415-422
Author(s):  
Amoka Pius ◽  
Tawose O M
Keyword(s):  
Dry Matter ◽  
Nutritive Value ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Dry Matter Intake ◽  
Gmelina Arborea ◽  
Leaf Meal ◽  
Dry Matter Digestibility ◽  
Inclusion Level ◽  
Cassava Peels

The nutritive value ,voluntary dry matter intake, and the nutrient digestibility of graded levels of Gmelina arborea and cassava peels concentrates in WAD sheep was investigated. Twelve WAD sheep aged 1-2 years old and weighting 14.00± 0.45 kg were used in a complete randomized design. Diets were formulated such that cassava peels was replaced with Gmelina arborea leaf meal at 0, 33.33, 66.67, 100% levels, designated as diets A, B, C, and D respectively. Diet without Gmelina arborea leaf meal was tagged the control diet. The concentrate feed was compounded to contain 16% CP. Diets with 33.33% inclusion level of Gmelina arborea had significantly (P<0.05) higher dry matter intake (DMI) 598.80g day-1, while the lowest DMI 425.00g day-1 was obtained in animals fed 100% inclusion level of Gmelina arborea. Crude protein intake (CPI) of animals fed diets with 33.33% inclusion levels of Gmelina arborea were significantly (P<0.05) highest, followed by 66.67% inclusion level and the least was observed in 0% inclusion level of Gmelina arborea. Dry matter digestibility (DMD) was significantly (P<0.05) different across the dietary treatments, animals placed on diets with 33.33% inclusion level had the highest DMD, followed by animals on diets with 66.67, 100 and 0% inclusion levels. CP digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, the lowest CP digestibility was observed at 0% inclusion level. CF digestibility (P<0.05) increased from 33.33% to 100% inclusion levels of Gmelina arborea leaf meal, while the lowest CF digestibility was observed at 0% inclusion level. N intake increased significantly (P<0.05) with increase in the level of Gmelina arborea inclusion from 33.33% to 100%. N retention was significantly (P<0.05) different, diets with 33.33% Gmelina arborea inclusion had the highest value (64.36g day-1) followed by 66.67%, 100% and the least (52.64g day-1) was at 0% inclusion level of Gmelina arborea.  N balance values also followed the same trend. From the results of this study, it can be concluded that the inclusion of Gmelina arborea leaf meal in WAD rams diet was well tolerated without adverse effect on acceptability, intake and nutrient digestibility, and inclusion level of 33.33% is hereby recommended in ruminants diet for optimum performance and productivity.

Sign in / Sign up

Export Citation Format

Share Document