Cellulose Production from Sago Frond with Alkaline Delignification and Bleaching on Various Types of Bleach Agents

Arnata, I Wayan; Suprihatin, - -; Fahma, Farah; Richana, Nur; Sunarti, Titi Candra

doi:10.13005/ojc/35specialissue102

Cited by 36 publications

(19 citation statements)

References 59 publications

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“…The lignin component of the modified S. zalacca frond FVB decreased from 28.1% (treatment A0-30) to 18.7% (treatment C14-60). This pattern of decline is relatively the same as that in previous studies using modified alkali [ 24 , 25 , 26 , 29 , 30 ]. Furthermore, the NaOH + Na 2 SO 3 treatment was more effective in maintaining α-cellulose, hemicellulose, and lignin content compared to previous studies by Darmanto et al [ 31 ] using S. zalacca as raw material with higher concentration and high-energy steam.…”

Section: Resultssupporting

confidence: 87%

Performance of Citric Acid-Bonded Oriented Board from Modified Fibrovascular Bundle of Salacca (Salacca zalacca (Gaertn.) Voss) Frond

et al. 2021

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The fibrovascular bundle (FVB) in palm plants consists of fiber and vascular tissue. Geometrically, it is a long fiber that can be used as an oriented board raw material. This research aimed to examine the performance of citric acid-bonded orientation boards from modified FVB salacca frond under NaOH + Na2SO3 treatment and the bonding mechanism between the modified FVB frond and citric acid. The results showed that changes in the chemical composition of FVB have a positive effect on the contact angle and increase the cellulose crystallinity index. Furthermore, the mechanical properties of the oriented board showed that 1% NaOH + 0.2% Na2SO3 with 60 min immersion has a higher value compared to other treatments. The best dimension stability was on a board with the modified FVB of 1% NaOH + 0.2% Na2SO3 with 30 and 60 min immersion. The bonding mechanism evaluated by FTIR spectra also showed that there is a reaction between the hydroxyl group in the modified FVB and the carboxyl group in citric acid. This showed that the modified combination treatment of NaOH+Na2SO3 succeeded in increasing the mechanical properties and dimensional stability of the orientation board from the FVB salacca frond.

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Section: Resultssupporting

confidence: 87%

Performance of Citric Acid-Bonded Oriented Board from Modified Fibrovascular Bundle of Salacca (Salacca zalacca (Gaertn.) Voss) Frond

et al. 2021

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“…Nanocrystalline cellulose (NCC) was prepared by sulfuric acid hydrolysis. [37] Bleached kapok fiber (BKF) of 5 g (w/w) was hydrolyzed using 400 g of sulfuric acid solution (60% wt) at 700 rpm, 50°C for 40, 50 and 60 min. The hydrolysis was stopped by adding 500 mL of cold aquades (8-10°C).…”

Section: Isolation Of Nanocrystalline Cellulosementioning

confidence: 99%

“…Samples of 80 mesh were irradiated with Cu K ( = 0.15 406 nm) at 40 kV and 35 mA XRD. The crystallinity index was calculated by the method according to Arnata et al ( 2019) [37], as in Equation ( 2):…”

Section: Crystallinity Degree Of Ncc and Beadsmentioning

confidence: 99%

“…The discoloration of cellulose fibers from yellow to white indicates an increase in cellulose purity. [37] Brownish yellow on the fiber indicates the presence of lignin (Figure 3a-c). [50,80] The NCC isolation using sulfuric acid not only caused a decrease in fiber diameter (d), but also in the length (L) of cellulose fiber.…”

Section: Morphology and Dimensions Of Ncc And Beadsmentioning

confidence: 99%

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Nanocrystalline Cellulose from Kapok Fiber (Ceiba pentandra) and its Reinforcement Effect on Alginate Hydrogel Bead

et al. 2021

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Kapok fiber (Ceiba pentandra) is a potential source of cellulose, but its utilization is still minimal. This study aims to isolate nanocrystalline cellulose (NCC) from kapok fibers using acid hydrolysis at various times and characterize its properties as reinforcement for alginate-nanocrystalline cellulose (Alg-NCC) hydrogel beads. NCCs are characterized using various techniques, and hydrogel beads are characterized by syneresis and strength (TPA). Variations in hydrolysis time cause changes in functional groups, decrease length and diameter, increase degree of crystallinity, and thermal stability. Nanocrystalline cellulose isolation from BKF by chemical hydrolysis is better done at 60% sulfuric acid concentration, for 50 min to produce a yield of 38.92%, L/d aspect ratio ranges from 8.53 to 12.23, degree of crystallinity 71.00%, and thermal stability with maximum degradation temperature 298.69°C. The incorporation of NCC on the Alg hydrogel beads leads to increase hardness 67.70% and decrease syneresis 4.14%. Thus, NCC can be used as a reinforcement agent because it has been shown to improve the physical, mechanical, and thermal properties of Alg-NCC hydrogel beads. Alg-NCC hydrogel beads have the potential to be widely applied in various fields.

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“…Usually, the chemical delignification process is undertaken by hydrolysis of acids, bases, oxidation, organosolv and ionic solutions. Delignification with alkaline hydrolysis can use an alkaline solution, namely NaOH [13].…”

Section: Introductionmentioning

confidence: 99%

The effect of adding NaOH and fermentation time on Robusta coffee husk (Coffea canephora) bioethanol production with SSF (Simultaneous Sachraffication and Fermentation) method

Listiandari¹,

Herdyastuti²

2022

World J. Adv. Res. Rev.

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Robusta coffee husk is one of the largest agricultural wastes and contains lignocellulose as a raw material for bioethanol production. Lignin in Robusta coffee husk can interfere with the enzymatic hydrolysis process, so a delignification process using NaOH solution is needed to remove it. This research aimed to determine the effect of adding NaOH and fermentation time on the bioethanol production from Robusta coffee husks using the SSF (Simultaneous Saccharification and Fermentation) method. Removal of lignin using NaOH with various concentrations of 6, 8, and 10% and fermentation time for 24, 48, 72, 96, and 120 hours. The cellulose, hemicellulose, and lignin contents in the delignification results were tested using the Chesson method. The saccharification and fermentation steps used cellulase enzymes and Saccharomyces cerevisiae. Bioethanol levels were analyzed using GCMS. The results showed that the optimal concentration of NaOH to remove lignin was 10% which generated 17.40% lignin content, 20.81% cellulose, and 3.79% hemicellulose. The highest bioethanol content was 100% obtained with a fermentation time of 72 hours. The data showed that adding of NaOH and fermentation time affected bioethanol production.

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Cellulose Production from Sago Frond with Alkaline Delignification and Bleaching on Various Types of Bleach Agents

Cited by 36 publications

References 59 publications

Performance of Citric Acid-Bonded Oriented Board from Modified Fibrovascular Bundle of Salacca (Salacca zalacca (Gaertn.) Voss) Frond

Performance of Citric Acid-Bonded Oriented Board from Modified Fibrovascular Bundle of Salacca (Salacca zalacca (Gaertn.) Voss) Frond

Nanocrystalline Cellulose from Kapok Fiber (Ceiba pentandra) and its Reinforcement Effect on Alginate Hydrogel Bead

The effect of adding NaOH and fermentation time on Robusta coffee husk (Coffea canephora) bioethanol production with SSF (Simultaneous Sachraffication and Fermentation) method

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