Ethanol production from cotton-based waste textiles

Jeihanipour, Azam; Taherzadeh, Mohammad J.

doi:10.1016/j.biortech.2008.07.020

Cited by 145 publications

(56 citation statements)

References 20 publications

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“…Nevertheless, the U-NaOH 15% + HW + E conversion is lower than the results accomplished in CGT with a severity factor of 4.68 (66.88%) [3] and the steam explosion of CGT and recycled paper sludge (73.8%) [7]. The NaOH hydrolysis has been evaluated in other cotton wastes as textile wastes [14] and cotton stalks [6]. In both wastes, the use of NaOH improved the cellulose conversion, similar to the results displayed in this study.…”

Section: Cellulose Conversionmentioning

confidence: 99%

Analysis of alkali ultrasonication pretreatment in bioethanol production from cotton gin trash using FT-IR spectroscopy and principal component analysis

Plácido

Capareda

2014

Bioresour. Bioprocess.

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Background: Cotton gin trash (CGT) is a lignocellulosic residue that can be used in the production of cellulosic ethanol. In a previous research, the sequential use of ultrasonication, liquid hot water, and ligninolytic enzymes was selected as pretreatment for the production of ethanol from CGT. However, an increment in the ethanol production is necessary. To accomplish that, this research evaluated the effect of pretreating CGT using alkaline ultrasonication before a liquid hot water and ligninolytic enzymes pretreatments for ethanol production. Three NaOH concentrations (5%, 10%, and 15%) were employed for the alkaline ultrasonication. Additionally, this work is one of the first applications of Fourier transform infrared (FT-IR) spectrum and principal component analysis (PCA) as fast methodology to identify the differences in the biomass after different types of pretreatments. Results: The three concentrations employed for the alkaline ultrasonication pretreatment produced ethanol yields and cellulose conversions higher than the experiment without NaOH. Furthermore, 15% NaOH concentration achieved twofold increment yield versus the treatment without NaOH. The FT-IR spectrum confirmed modifications in the CGT structure in the different pretreatments. PCA was helpful to determine differences between the pretreated and un-pretreated biomass and to evaluate how the CGT structure changed after each treatment. Conclusions: The combination of alkali ultrasonication hydrolysis, liquid hot water, and ligninolytic enzymes using 15% of NaOH improved 35% the ethanol yield compared with the original treatment. Additionally, we demonstrated the use of PCA to identify the modifications in the biomass structure after different types of pretreatments and conditions.

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Section: Cellulose Conversionmentioning

confidence: 99%

Analysis of alkali ultrasonication pretreatment in bioethanol production from cotton gin trash using FT-IR spectroscopy and principal component analysis

Plácido

Capareda

2014

Bioresour. Bioprocess.

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“…It was concluded that residue mix for briquette production can optimize its physicalchemical and mechanical properties depending on relation of mix used [24].…”

Section: Types Of Reuse In Engineeringmentioning

confidence: 99%

Textile Wastes: State of the Art

Kpe¹,

Mmb²,

Ma³

2017

Textile Sci Eng

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“…NMMO-treated and untreated rice straw was subjected to 72 h enzymatic hydrolysis using 20 FPU cellulase and 30 IU β-glucosidase per gram cellulose [7]. Then the reminder solid was separated by centrifuge from the supernatant.…”

Section: Enzymatic Hydrolysismentioning

confidence: 99%

Improvement of Enzymatic Hydrolysis of Rice Straw by N-Methylmorpholine-N-Oxide (NMMO) Pretreatment

Poornejad¹,

Salehi²,

Karimi³

et al. 2011

Linköping Electronic Conference Proceedings

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"Food versus energy" analysis resulted in demanding raw materials which don't have conflict with food industries. The lignocellulosic materials are the most interested option, since not only these materials don't have conflict with food industries, but also there several economical and environmental advantages in those substrates for bioethanol production. However, the lignocellulosic materials are recalcitrant to both acid and enzymatic hydrolysis. As a result, some pretreatment steps must be taken before hydrolysis. One of the most effective pretreatment methods is treatment with cellulosic solvent. In this work rice straw, an agricultural residue which is mainly unused was pretreated with an industrial solvent, N-methylmorpholine-N-oxide (NMMO). The pretreatments were performed at 120°C for 1, 3,5 hours with 85% NMMO solution. The treated materials were then subjected to enzymatic hydrolysis by a mixture of commercial cellulase and glucosidase. The results showed significant improvement on the enzymatic hydrolysis. Almost complete hydrolysis of the cellulose in the straw was observed after 5 h treatment with NMMO at ambient pressure and 120°C.

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Ethanol production from cotton-based waste textiles

Cited by 145 publications

References 20 publications

Analysis of alkali ultrasonication pretreatment in bioethanol production from cotton gin trash using FT-IR spectroscopy and principal component analysis

Analysis of alkali ultrasonication pretreatment in bioethanol production from cotton gin trash using FT-IR spectroscopy and principal component analysis

Textile Wastes: State of the Art

Improvement of Enzymatic Hydrolysis of Rice Straw by N-Methylmorpholine-N-Oxide (NMMO) Pretreatment

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