Characterisation and evaluation of a novel feedstock, Manihot glaziovii , Muell. Arg , for production of bioenergy carriers: Bioethanol and biogas

Moshi, Anselm P.; Crespo, Carla; Badshah, Malik; Hosea, Ken M.; Mshandete, Anthony Manoni; Elisante, Emrode; Mattìasson, Bo

doi:10.1016/j.biortech.2014.08.084

Cited by 30 publications

(19 citation statements)

References 24 publications

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“…Sequential bioethanol and biogas production improved the yield and diversity of the products. According to Moshi et al [42], both biomass-derived methane and ethanol production could be economically viable, depending on the geography and the existing infrastructure. In our opinion, the integration of these processes would be optimal, especially in the case of second-generation ethanol production, since this strategy combines energy production with the management of by-products.…”

Section: Hydrogen and Methane Production From Suger Beet Residuesmentioning

confidence: 99%

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

et al. 2017

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Large amounts of waste biomass are generated in sugar factories from the processing of sugar beets. After diffusion with hot water to draw the sugar from the beet pieces, a wet material remains called pulp. In this study, waste sugar beet pulp biomass was enzymatically depolymerized, and the obtained hydrolyzates were subjected to fermentation processes. Bioethanol, biomethane, and biohydrogen were produced directly from the substrate or in combined mode. Stillage, a distillery by-product, was used as a feedstock for anaerobic digestion. During biosynthesis of ethanol, most of the carbohydrates released from the sugar beet pulp were utilized by a co-culture of Saccharomyces cerevisiae Ethanol Red, and Scheffersomyces stipitis LOCK0047 giving 12.6 g/L of ethanol. Stillage containing unfermented sugars (mainly arabinose, galactose and raffinose) was found to be a good substrate for methane production (444 dm 3 CH 4 /kg volatile solids (VS)). Better results were achieved with this medium than with enzymatic saccharified biomass. Thermal pre-treatment and adjusting the pH of the inoculum resulted in higher hydrogen production. The largest (p < 0.05) hydrogen yield (252 dm 3 H 2 /kg VS) was achieved with sugar beet stillage (SBS). In contrast, without pre-treatment the same medium yielded 35 dm 3 H 2 /kg VS. However, dark fermentation of biohydrogen was more efficient when sugar beet pulp hydrolyzate was used.

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Section: Hydrogen and Methane Production From Suger Beet Residuesmentioning

confidence: 99%

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

et al. 2017

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“…The resulting contact between ethanol solution with zeolite solution took more time, so that more water molecules were absorbed into the zeolite pores. The dehydration process resulted in 95.6% (v/v) ethanol, 3.9% higher than Moshi et al [21]. Figure 5 illustrates the results of FTIR spectroscopy test of M. glaziovii bioethanol.…”

Section: Distillation and Dehydrationmentioning

confidence: 83%

Optimization of Reducing Sugar Production from Manihot glaziovii Starch Using Response Surface Methodology

et al. 2017

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Abstract:Bioethanol is known as a viable alternative fuel to solve both energy and environmental crises. This study used response surface methodology based on the Box-Behnken experimental design to obtain the optimum conditions for and quality of bioethanol production. Enzymatic hydrolysis optimization was performed with selected hydrolysis parameters, including substrate loading, stroke speed, α-amylase concentration and amyloglucosidase concentration. From the experiment, the resulting optimum conditions are 23.88% (w/v) substrate loading, 109.43 U/g α-amylase concentration, 65.44 U/mL amyloglucosidase concentration and 74.87 rpm stroke speed, which yielded 196.23 g/L reducing sugar. The fermentation process was also carried out, with a production value of 0.45 g ethanol/g reducing sugar, which is equivalent to 88.61% of ethanol yield after fermentation by using Saccharomyces cerevisiae (S. cerevisiae). The physical and chemical properties of the produced ethanol are within the specifications of the ASTM D4806 standard. The good quality of ethanol produced from this study indicates that Manihot glaziovii (M. glaziovii) has great potential as bioethanol feedstock.

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“…Indonesia is one of the cassava leading producers in the world. Cassava has many superior growing characteristics over the other crops that include high drought and flood-tolerance and ability to grow on light sandy soils and medium texture soils [1]. Another advantage of cassava is related to its higher starch content than many other stem tuber plants.…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Effects of Cyanide on the Activity of Granular Starch Hydrolyzing Enzyme (GSHE) during Hydrolysis of Cassava (Manihot Esculenta Crantz) Starch

Hargono

Kumoro

Jos

2018

Period. Polytech. Chem. Eng.

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The kinetics and inhibitory effects of cyanide on the granular starch hydrolyzing enzyme (GSHE) activity during hydrolysis of cassava (Manihot esculenta Crantz) starch at low temperature were studied. The substrates included native cassava starch at various concentrations (100-400 g/L) and native cassava starches with added cyanide at various concentrations (50-150 mg/kg), while the concentration of enzyme was 1.5% (w/w). A decrease in reducing sugar concentration during hydrolysis of cassava starch indicated that the cyanide reduced the enzyme activity. Lineweaver-Burk plot of Michaelis-Menten equation was used to study the inhibition kinetics. The maximum velocity (V max ) value was higher for native cassava starch than that of native cassava starch with added cyanides.The presence of cyanide was found to reduce the V max values. No significant different of the saturation constant (K m ) value between native cassava starch and native cassava starch with added cyanides was observed. Based on the inhibition type analysis, the effect of cyanide in the cassava starch can be classified as a noncompetitive inhibition, with the K i value of 0.33 mg/L.

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Characterisation and evaluation of a novel feedstock, Manihot glaziovii , Muell. Arg , for production of bioenergy carriers: Bioethanol and biogas

Cited by 30 publications

References 24 publications

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

Integrated Bioethanol Fermentation/Anaerobic Digestion for Valorization of Sugar Beet Pulp

Optimization of Reducing Sugar Production from Manihot glaziovii Starch Using Response Surface Methodology

Inhibitory Effects of Cyanide on the Activity of Granular Starch Hydrolyzing Enzyme (GSHE) during Hydrolysis of Cassava (Manihot Esculenta Crantz) Starch

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