Separation of Cellulose from Rice Hull

Zahra, Audrey; Lim, Seo-Kyoung

doi:10.7584/jktappi.2021.10.53.5.28

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…This research study utilized a rice hull that underwent an alkaline extraction as a desilication process, which was previously explained in detail in a separate paper referenced [24]. The desilicated rice hull (DSRH) was implemented as a main component in the research.…”

Section: Methodsmentioning

confidence: 99%

“…To solve this issue, desilication by alkali treatment was carried out, according to a previously published study. The desilicated rice hull had 0.2% acetone extraction, 5.9% hot water extraction, 10.0% lignin, 29.4% cellulose, 9.4% xylan, and 2.2% of inorganics [24]. Meanwhile, rice hull composition that has not undergone silica removal contains 28.7-35.62% cellulose, 11.96-29.3% hemicellulose, 15.38-20% lignin, and 17-18.71% ash/silica [29].…”

Section: Carbohydrate Compositional Analysis Of Various Lcnf Ds Desil...mentioning

confidence: 99%

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Characterization of Lignocellulose Nanofibril from Desilicated Rice Hull with Carboxymethylation Pretreatment

Zahra,

Lim,

Shin

2024

Polysaccharides

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Rice hulls have a high-value potential, and the lignocellulose components are underutilized compared to other biomass resources. Pretreatments such as carboxymethylation of the degree of substitutions (DS) are used to prepare lignocellulose nanofibril (LCNF) from desilicated rice hull (DSRH). High-pressure homogenization (HPH) and grinding are used to process nano fibrillation. The composition of LCNF DS of desilicated rice hull was identified using 1H NMR for polysaccharide composition and DS determination, acetone and hot water extraction to evaluate extractives, and Klason lignin for lignin content. LCNF was prepared using various DS from 0.2 until DS 0.4. The results showed that LCNF DS has a more than −30 mV zeta potential, suitable for stable nanoemulsion formulations. The particle size of LCNF DS decreases with an increasing carboxyl content in the hydrogel and an increasing number of passes through grinding and high-pressure homogenization, of which LCNF DS 0.4 had the smallest width and length. Mechanical processes further reduced the size.

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Section: Methodsmentioning

confidence: 99%

Section: Carbohydrate Compositional Analysis Of Various Lcnf Ds Desil...mentioning

confidence: 99%

Characterization of Lignocellulose Nanofibril from Desilicated Rice Hull with Carboxymethylation Pretreatment

Zahra,

Lim,

Shin

2024

Polysaccharides

Self Cite

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Study of Defibration of Rice Husk Depending on the Mechanical Treatment Methods

Han

Sung

2023

J. of Korea TAPPI

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We investigated the effect of mechanical treatments on the defibration behavior of rice husk for determining the optimal condition for the production of the non-woody fibers. The investigation examined the behavior of rice husk defibration under different mechanical treatment methods, levels of solid consistency, and working temperatures. Two types of mechanical treatment methods including the traditional valley beater and the high speed grinder were applied for this study. Higher impact by high speed grinder generated more amount of fibers and fines, respectively than those by the valley beater. In the same mechanical treatment method, the higher solid consistency and the higher working temperature could promote more fiber generation. Consequently, this study showed the possibility of the effective production of non-woody cellulose fiber from rice husk by mild alkaline pretreatment and following optimal mechanical defibration condition.

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Separation of Cellulose from Rice Hull

Cited by 2 publications

References 18 publications

Characterization of Lignocellulose Nanofibril from Desilicated Rice Hull with Carboxymethylation Pretreatment

Characterization of Lignocellulose Nanofibril from Desilicated Rice Hull with Carboxymethylation Pretreatment

Study of Defibration of Rice Husk Depending on the Mechanical Treatment Methods

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