Short duration microwave assisted pretreatment enhances the enzymatic saccharification and fermentable sugar yield from sugarcane bagasse

Binod, Parameswaran; Satyanagalakshmi, Karri; Sindhu, Raveendran; Janu, Kanakambaran Usha; Sukumaran, Rajeev K.; Pandey, Ashok

doi:10.1016/j.renene.2011.06.007

Cited by 355 publications

(162 citation statements)

References 35 publications

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“…Ding et al [13] achieved maximum reducing sugar yield with microwave assisted alkali pretreatment of coconut husk fiber. Binod et al [14] showed 90% lignin removal from microwave assisted alkali pretreated sugarcane bagasse.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical treatment for improving bioconversion of cassava industrial residues

Sudha¹,

Sivakumar

Sangeetha³

et al. 2017

Env Prog and Sustain Energy

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In the present study, a comparison of two types of microwave pretreatment such as microwave assisted alkali and microwave assisted acid were studied using cassava pulp as the substrate. The effect of pretreatment agent concentration, microwave power and pretreatment time on enzymatic saccharification was studied using a response surface method according to Central Composite design. Under optimized conditions, microwave assisted alkali pretreatment of cassava pulp with 2.27% NaOH at 125 W for 18 min followed by enzymatic hydrolysis gave reducing sugar yield of 0.472 g g 21 dry biomass, while microwave assisted acid treatment with 1.95% H 2 SO 4 at 135 W for 25 min showed reducing sugar yield of 0.306 g g 21 dry biomass. The yield from microwave assisted alkali was higher and was 2.7 times higher than that obtained with raw cassava pulp. Microwave assisted liquefaction of pretreated cassava pulp at 100 W for 30 min using amylase lowered the process time.

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Section: Introductionmentioning

confidence: 99%

Physicochemical treatment for improving bioconversion of cassava industrial residues

Sudha¹,

Sivakumar

Sangeetha³

et al. 2017

Env Prog and Sustain Energy

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“…In a two-stage pretreatment, overall reduced sugar yield of 0.83 g/g dry biomass was reported upon microwave-alkali followed by acid pretreatment. However, with isolated treatments, fermentable sugar yield of 0.665 g/g and 0.249 g/g dry biomass was observed using microwave-alkali and microwave-acid pretreatments, respectively [44].…”

Section: Microwave-assisted Two-stage Pretreatmentmentioning

confidence: 96%

“…Likewise, pretreated bagasse and rice hulls using microwave radiation yielded 77%-84% of total available reducing sugars [43]. Microwave pretreatment substantially improved the recovery of fermentable sugars from sugarcane bagasse [44]. Microwave-assisted dilute nitric acid pretreatment has been shown to enhance the enzymatic digestibility of rice straw by 14% when compared to the convection heating mode, and a reduction of the pretreatment time from 60 min to 7 min was also observed [45].…”

Section: Microwave-assisted Chemical Pretreatmentmentioning

confidence: 99%

Microwave-assisted pretreatment technologies for the conversion of lignocellulosic biomass to sugars and ethanol: a review

Puligundla

Oh²,

Mok³

2016

Carbon letters

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Lignocellulosic biomass conversion to biofuels such as ethanol and other value-added bio-products including activated carbons has attracted much attention. The development of an efficient, cost-effective, and eco-friendly pretreatment process is a major challenge in lignocellulosic biomass to biofuel conversion. Although several modern pretreatment technologies have been introduced, few promising technologies have been reported. Microwave irradiation or microwave-assisted methods (physical and chemical) for pretreatment (disintegration) of biomass have been gaining popularity over the last few years owing to their high heating efficiency, lower energy requirements, and easy operation. Acid and alkali pretreatments assisted by microwave heating meanwhile have been widely used for different types of lignocellulosic biomass conversion. Additional advantages of microwave-based pretreatments include faster treatment time, selective processing, instantaneous control, and acceleration of the reaction rate. The present review provides insights into the current research and advantages of using microwave-assisted pretreatment technologies for the conversion of lignocellulosic biomass to fermentable sugars in the process of cellulosic ethanol production.

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“…Also, decrease in peak height at 1200 cm -1 (O-H bending in cellulose and hemicellulose) suggested the breakage of hydrogen bonds between cellulose and hemicellulose. The band 1280 cm -1 represents C-H bending and is crucial in determining the degree of crystallinity of cellulose (Binod et al, 2012). The new pretreatment strategy was able to remove cellulose crystallinity from the SCW which is evident in the decrease in peak absorbance at 1280 cm -1 , representing C-H bending in crystalline cellulose.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 97%

Evaluation of ultrasound assisted potassium permanganate pre-treatment of spent coffee waste

Ravindran¹,

Jaiswal

Abu‐Ghannam³

et al. 2017

Bioresource Technology

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Short duration microwave assisted pretreatment enhances the enzymatic saccharification and fermentable sugar yield from sugarcane bagasse

Cited by 355 publications

References 35 publications

Physicochemical treatment for improving bioconversion of cassava industrial residues

Physicochemical treatment for improving bioconversion of cassava industrial residues

Microwave-assisted pretreatment technologies for the conversion of lignocellulosic biomass to sugars and ethanol: a review

Evaluation of ultrasound assisted potassium permanganate pre-treatment of spent coffee waste

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