Pretreatment of banana agricultural waste for bio-ethanol production: Individual and interactive effects of acid and alkali pretreatments with autoclaving, microwave heating and ultrasonication

Gabhane, Jagdish; William, S.P.M. Prince; Gadhe, Abhijit; Rath, R. M. B.; Vaidya, Atul N.; Wate, S. R.

doi:10.1016/j.wasman.2013.10.013

Cited by 94 publications

(46 citation statements)

References 30 publications

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“…Santa-Maria et al [10] assessed the feasibility of producing second generation ethanol from the lignocellulosic banana waste, showing the large potential for cellulosic ethanol production due to the abundance of the feedstock. Most of the researchers have focused their efforts to improve the yield and reduce production costs [10,13,14]. Major crop residues such as wheat straw, rice hulls, corn stover and wood chips, have been largely studied as a feedstock for bioenergy, but little is known about the energy conversion of major non-staple crops, such as banana crop.…”

Section: Introductionmentioning

confidence: 99%

GIS-Based Assessment of Banana Residual Biomass Potential for Ethanol Production and Power Generation: A Case Study

Guerrero

Cortijo

Sánchez

et al. 2015

Waste Biomass Valor

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Purpose Banana is one of the most important fruit crops in the world. The plant bears one bunch in its life, leaving behind a large amount of agricultural residues (starchy and lignocellulosic biomass), which could be used for different purposes such as bioenergy. Ecuador is the largest exporter of banana fruits. Methods In this work, the potential of banana residual biomass produced in the province of El Oro, Ecuador for bioenergy applications was assessed using Geographic Information Systems-GIS. The methodology included the assessment of biomass distribution, facility location, transport optimization and a novel virtual land parcel that allows for these kinds of studies in areas with lack of georeferenced information. Results According to our approach, El Oro province has an available biomass potential of 190,102 t fm year -1 of starchy residual biomass and 198,602 t dm year -1 of lignocellulosic residual biomass. Two candidate points located at 79°51 0 12 00 W3°11 0 21 00 S and 79°52 0 49 00 W3°17 0 49 00 S were identified for the installment of energy conversion facilities supplied with residual biomass. Conclusions From the available potential of starchy biomass it would be possible to obtain up to 19 million liters of bioethanol per year assuming an average yield of 101.2 l t -1 fresh matter; while the available lignocellulosic biomass, which energy content (Lower Heating Value, moisture free biomass) was determined at 12.9 MJ kg -1 on average, could be used for power generation with an installed capacity of 18 MW. Chemical characterization of the lignocellulosic biomass suggested that further studies should be undertaken regarding the potential application of these crop residues to second generation bioethanol.

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Section: Introductionmentioning

confidence: 99%

GIS-Based Assessment of Banana Residual Biomass Potential for Ethanol Production and Power Generation: A Case Study

Guerrero

Cortijo

Sánchez

et al. 2015

Waste Biomass Valor

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“…These values were consistent with those reported in other studies. Specifically, Gabhane et al (2013) found that increasing the application time and power of the microwave pretreatment of banana waste increases the temperature, resulting in greater degradation of hexoses to HMF. In this case, all of the values obtained ranged from 1.282 ± 0.015 g/L to 2.148 ± 0.018 g/L, with the lowest produced at a power of 2.125 W/g and a time of 5 s. The negative effects on the growth and fermentation rate of S. cerevisiae were reported for HMF concentrations above 1.0 g/L (Banerjee et al 1981;Taherzadeh et al 2000).…”

Section: Analysis Of Microwave Heating Of Pineapple Waste By Thermogrmentioning

confidence: 99%

Microwave-Assisted Alkali Pretreatment for Enhancing Pineapple Waste Saccharification

et al. 2016

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The effectiveness of microwave-assisted sodium hydroxide pretreatments to enhance the saccharification performance of pineapple waste was evaluated. Microwave alkali pretreatments for short exposure times (up to 60 s) significantly improved the yield of the enzymatic hydrolysis compared with non-pretreated waste. The greatest increase of fermentable (35.7%) and total sugars (33.5%) was obtained at 6.375 W/g for 5 s. However, longer exposure times resulted in sugar degradation and released fermentation inhibitors, such as phenols or hydroxymethylfurfural (HMF), as a consequence of thermal degradation. Nevertheless, the obtained phenols values were not sufficient to inhibit subsequent fermentation. Scanning electron microscope (SEM) images confirmed that applying microwaves for short exposure times promoted structural changes that improved enzymatic hydrolysis. By contrast, an increase in the severity of the treatment led to a compacted structure, which hindered access to enzymes and consequently reduced the release of sugars into the medium.

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“…These pockets ultimately explode due to an increase in heat, leading to the relocation of crystalline structures within the lignocellulosic material [6]. Gabhane et al [7] studied the individual and interactive effects of acid and alkali pre-treatments using an autoclave, microwave, and ultrasonicator, and obtained a maximal reducing sugar yield of 36.84% from acid pre-treated banana waste by using microwave radiation. Despite the vast information available on lignocellulosic pre-treatment, a significant knowledge gap exists between this and the kinetic assessment of the fermentation efficiency of pre-treated lignocellulosic substrates for biofuel production.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Bioethanol Production from Waste Sorghum Leaves Using Saccharomyces cerevisiae BY4743

Rorke

Kana

2017

Fermentation

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Kinetic models for bioethanol production from waste sorghum leaves by Saccharomyces cerevisiae BY4743 are presented. Fermentation processes were carried out at varied initial glucose concentrations (12.5-30.0 g/L). Experimental data on cell growth and substrate utilisation fit the Monod kinetic model with a coefficient of determination (R 2 ) of 0.95. A maximum specific growth rate (µ max ) and Monod constant (K S ) of 0.176 h −1 and 10.11 g/L, respectively, were obtained. The bioethanol production data fit the modified Gompertz model with an R 2 value of 0.98. A maximum bioethanol production rate (r p,m ) of 0.52 g/L/h, maximum potential bioethanol concentration (P m ) of 17.15 g/L, and a bioethanol production lag time (t L ) of 6.31 h were observed. The obtained Monod and modified Gompertz coefficients indicated that waste sorghum leaves can serve as an efficient substrate for bioethanol production. These models with high accuracy are suitable for the scale-up development of bioethanol production from lignocellulosic feedstocks such as sorghum leaves.

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Pretreatment of banana agricultural waste for bio-ethanol production: Individual and interactive effects of acid and alkali pretreatments with autoclaving, microwave heating and ultrasonication

Cited by 94 publications

References 30 publications

GIS-Based Assessment of Banana Residual Biomass Potential for Ethanol Production and Power Generation: A Case Study

GIS-Based Assessment of Banana Residual Biomass Potential for Ethanol Production and Power Generation: A Case Study

Microwave-Assisted Alkali Pretreatment for Enhancing Pineapple Waste Saccharification

Kinetics of Bioethanol Production from Waste Sorghum Leaves Using Saccharomyces cerevisiae BY4743

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