Disruption of sugarcane bagasse lignocellulosic structure by means of dilute sulfuric acid pretreatment with microwave-assisted heating

Chen, Wei‐Hsin; Tu, Yi-Jian; Sheen, Herng-Kuang

doi:10.1016/j.apenergy.2011.02.027

Cited by 277 publications

(132 citation statements)

References 31 publications

Supporting

Mentioning

108

Contrasting

Unclassified

Order By: Relevance

“…Therefore, increasing the pretreatment temperature is assumed to be an effective method to disrupt the fiber surface of OPEFB. This complies with previous research, which showed that acid pretreatment using extensive microwave heating changed the morphological structure of lignocellulose and a large amount of debris was obtained [23]. Disruption of the OPEFB fiber surface is expected to increase enzyme accessibility in the fiber structure.…”

Section: Effect Of Pretreatment On the Morphology Of Opefb Fiberssupporting

confidence: 75%

“…These results show that the cellulose content in the OPEFB residue was increased, while the hemicellulose content was decreased. This is similar to the change in structure of sugarcane bagasse after dilute sulfuric acid pretreatment with microwave heating and the structure of OPEFB after fungal pretreatment followed by phosphoric acid pretreatment [23,31]. Nelson & Connor [32] proposed a crystallinity index called LOI, which is obtained by calculating the ratio between the absorption bands at 1429 and 893 cm -1 .…”

Section: Effect Of Pretreatment On the Functional Groups Of Opefb Fibersmentioning

confidence: 96%

See 1 more Smart Citation

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Solihat

Sari

Risanto

et al. 2017

J. Math. Fund. Sci.

View full text Add to dashboard Cite

Abstract. Developing an effective pretreatment for the conversion of lignocellulosic biomass to ethanol is an important effort in reducing the cost of this process. Microwave-assisted pretreatment is considered a green technology that can effectively break down lignocellulosic structures. The objective of this study was to investigate the most effective temperature for microwave-assisted oxalic acid pretreatment regarding the structural characteristic changes of oil palm empty fruit bunches (OPEFB) fibers. The fibers were subjected to microwave-assisted oxalic acid pretreatment at 160-200 °C with 2.5 minutes heating time and a liquid to solid ratio of 10. The effectiveness of the pretreatment was determined based on its delignification selectivity, morphological characteristics, and functional group changes. Microwave irradiation of OPEFB fibers at 180 ºC was effective in increasing the cellulose content by 24%. This pretreatment resulted in 1.82 delignification selectivity. More than 50% of the hemicellulose of the OPEFB was removed after this treatment, which was confirmed by a decrease of the absorption bands of functional groups at 1732 cm -1 . The increase of pretreatment temperature disrupted the morphological structure of the OPEFB and removed its hemicellulose but did not change its functional groups and lignin content.

show abstract

Section: Effect Of Pretreatment On the Morphology Of Opefb Fiberssupporting

confidence: 75%

Section: Effect Of Pretreatment On the Functional Groups Of Opefb Fibersmentioning

confidence: 96%

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Solihat

Sari

Risanto

et al. 2017

J. Math. Fund. Sci.

View full text Add to dashboard Cite

show abstract

“…Recently, microwave-assisted alkali pretreatment using 3% (w/v) NaOH at 180 W for 12 min was found to be effective in reducing lignin content (74%) and holocellulose (24.5%) from degradation of lignin and hemicellulose in biomass [40]. Microwave energy for biomass pretreatment was first introduced by Ooshima et al [41], who used it to pretreat different hardwoods and softwoods.…”

Section: Pretreatment Of Biomassmentioning

confidence: 99%

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

Puligundla

Oh²,

Mok³

2016

Carbon letters

View full text Add to dashboard Cite

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.

show abstract

“…Microwave irradiation is an alternative method for hydrolysis of biomass to simple sugars. Microwave heating presents a potentially faster, efficient and selective method for thermal treatment of biomass, compared with conventional heating [12], the reaction rate of starch hydrolysis to glucose was accelerated 100 times under microwave irradiation [13]. Therefore, it was considered as energy efficient approach for biomass pretreatment under low pressure and temperature [14,15], and the microwave heating even improved the glucose selectivity [16].…”

Section: Introductionmentioning

confidence: 99%

Two-steps microwave-assisted treatment on acid hydrolysis of sago pith for bioethanol production

Sunarti

Yanti

Ruriani

2017

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Abstract. Sago is a genus of palm that can be utilized to produce fermentable sugars as substrate for bioethanol. Sago pith is a heterogeneous substrate consists of starch and fiber. Acid hydrolysis by microwave heating radiation can break down starch and fibers together in a very short time, so it is considered to be very efficient process. The use of microwave energy (as power level) and variation of heating time can produce fermentable sugar with certain characteristics. This study included the preparation and analysis of sago pith flour; process of acid hydrolysis (0.3 M and 0.5 M H 2 SO 4 ) using two steps microwave heating, first with power level 30% (1, 2 and 3 min) and second with power level 70% (3 min); and ethanol production. The conventional treatment (autoclaving at 121C for 15 min) was carried for the comparison. The highest fermentable sugar (105.7 g/l) was resulted from microwave heating with power level 30% for 2 min followed by the power level 70% for 3 min. This hydrolyzate then used as substrate for bioethanol fermentation and partially neutralized (pH 3, 4, 5) by using yeast Issatchenkia orientalis, and the highest ethanol (2.8 g/l) was produced in pH 5.

show abstract

Disruption of sugarcane bagasse lignocellulosic structure by means of dilute sulfuric acid pretreatment with microwave-assisted heating

Cited by 277 publications

References 31 publications

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

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

Two-steps microwave-assisted treatment on acid hydrolysis of sago pith for bioethanol production

Contact Info

Product

Resources

About