Enhanced enzymatic conversion with freeze pretreatment of rice straw

Chang, Ken-Lin; Thitikorn-amorn, Jitladda; Hsieh, Jung-Feng; Ou, Bay-Ming; Chen, Shan-He; Ratanakhanokchai, Khanok; Huang, Po‐Jung; Chen, Shui‐Tein

doi:10.1016/j.biombioe.2010.08.027

Cited by 78 publications

(45 citation statements)

References 32 publications

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“…petroleum and coal that are the dominant sources for supplying cheap energy for the world's economy, has prompted recent significant research efforts in finding viable and sustainable alternatives (Chang et al 2011). Among various options, conversion of abundant lignocellulosic biomasses to biofuels has received significant attention.…”

Section: Introductionmentioning

confidence: 99%

Relationship between Crystallinity Index and Enzymatic Hydrolysis Performance of Celluloses Separated from Aquatic and Terrestrial Plant Materials

Li¹,

Zhou²,

Wu³

et al. 2014

BioResources

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a Hydrolysis experiments of five cellulose samples (separated from two aquatic plants and three terrestrial plants, respectively) were conducted at various cellulase loadings (7 to 200 FPU/g cellulose). No obvious correlation was found between CrI and hydrolysis performance at low enzyme loadings (e.g. 7 and 28 FPU/g cellulose), as the hydrolysis was controlled by enzyme availability and the differences in cellulose structure were unimportant. At a sufficiently high enzyme loading (e.g. 200 FPU/g cellulose), the yield of reducing sugar was linearly proportional to the CrI value. Therefore, to establish such a correlation between cellulose structure and hydrolysis performance, hydrolysis experiments must be conducted under the conditions where enzyme availability is not a limiting factor. It was found that celluloses from sugarcane bagasse and water hyacinth have low CrI, achieve high sugar yields, exhibit fast reactions during enzymatic hydrolysis at low enzyme loadings, and can potentially be good feedstocks for bio-ethanol production.

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Section: Introductionmentioning

confidence: 99%

Relationship between Crystallinity Index and Enzymatic Hydrolysis Performance of Celluloses Separated from Aquatic and Terrestrial Plant Materials

Li¹,

Zhou²,

Wu³

et al. 2014

BioResources

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“…In spite of the high cost involved and that only a few studies have been carried out using this pretreatment so far, its unique features i.e. lower negative environmental impact, application of less dangerous chemicals and high effectiveness have attracted a great deal of attention [29].…”

Section: Freeze Pretreatmentmentioning

confidence: 99%

“…Chang et al, (2011) [29] reported that freeze pretreatment from rice straw improved enzymatic hydrolysis yields by about 84%. Rice straw pretreated by freezing at -20⁰C for 2 hours and the frozen straw was thawed at room temperature for 1 hour.…”

Section: Freeze Pretreatmentmentioning

confidence: 99%

“…Thus, when water cools, it tends to stack in a crystalline lattice configuration that stretches the rotational and vibrational components of the bond. Water, uranium, neon and silicon are some of the few materials that expand when they freeze; most other materials contrary [29]. Pinsky et al [30] found that freeze-thaw process could disrupt bulk hydration layer, forming a crystal lattice of ice and rendering protein inactive.…”

Section: Freeze Pretreatmentmentioning

confidence: 99%

“…Other reports [31] have shown that water migrated to form ice crystals during freezing or frozen storage and caused breaking force. Chang et al, (2011) [29] pre-incubated rice straw in acetate buffer for 1 hour. The acetate buffer solute penetrated the pores of the rice straw.…”

Section: Freeze Pretreatmentmentioning

confidence: 99%

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Enhanced biogas production from rice straw with various pretreatment : a review

Sari

Budiyono

2014

waste technol.

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Abstrack -Rice straw is one of organic material that can be used for sustainable production of bioenergy and biofuels such as biogas . Out of all bioconversion technologies for biogas production, anaerobic digestion (AD) is a most cost-effective bioconversion technology that has been implemented worldwide for commercial production of electricity, heat, and compressed natural gas (CNG) from organic materials. However, the utilization of rice straw for biogas production via anaerobic digestion has not been widely adopted because the complicated structure of the plant cell wall makes it resistant to microbial attack. Pretreatment of recalcitrant rice straw is essential to achieve high biogas yield in the AD process. A number of different pretreatment techniques involving using physical pretreatment (hydrothermal and freeze), chemical pretreatment (sodium carbonate -sodium sulfite, hydrogen peroxide, NMMO, alkaline, and dilute acid) and biological pretreatment (fungal pretreatment) also combined pretretment (microwave irradiation and chemical) approaches have been investigated, but there is no report that systematically compares the performance of these pretreatment methods for application on rice straw for biogas production. This paper reviews the methods that

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