Delignification of Oil Palm Empty Fruit Bunch using Peracetic Acid and Alkaline Peroxide Combined with the Ultrasound

Hermansyah, Heri; Putri, Dwini Normayulisa; Prasetyanto, Andiko; Chairuddin, Zhofran Bintang; Perdani, Meka Saima; Sahlan, Muhamad; Yohda, Masafumi

doi:10.14716/ijtech.v10i8.3464

Cited by 19 publications

(10 citation statements)

References 22 publications

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“…Alkali or alkali mixtures have been typically used in wood color control studies; however, this study used PAA solutions so that the data can be used to compare alkali conditions and acid conditions (Hermansyah et al, 2019). cellulose C-O peak at 1,020-1,030 cm -1 indicates strong absorption and is not greatly affected, as revealed by FT-IR (Rosu et al, 2010).…”

Section: Changes Of Wood Colormentioning

confidence: 99%

Peracetic Acid Treatment as an Effective Method to Protect Wood Discoloration by UV Light

PARK¹,

KIM²,

PARK³

et al. 2022

J. Korean Wood Sci. Technol.

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http://www.woodj.org -283 -1. INTRODUCTION Wood, a renewable resource and a natural polymer, is gaining increasing global attention as part of the collective effort to mitigate climate change. As one of the most abundant resources on the planet, wood has long been used for various applications such as interior and exterior construction material, household products, and fuel. Until recently, research has been conducted on fuel and exterior building materials such as CLT, ply-

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Section: Changes Of Wood Colormentioning

confidence: 99%

Peracetic Acid Treatment as an Effective Method to Protect Wood Discoloration by UV Light

PARK¹,

KIM²,

PARK³

et al. 2022

J. Korean Wood Sci. Technol.

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“…Pretreatment of OPEFB was carried out by using peracetic acid and alkaline peroxide solution, sequentially. Modi ed pretreatments were conducted by the assistance of ultrasound, according to the previous research (Hermansyah et al 2019).…”

Section: Pretreatmentmentioning

confidence: 99%

“…Further pretreatment using AP solution was carried out by mixing 10 g of pretreated OPEFB with 200 mL AP solution (20 mL of AP solution per gram of OPEFB) in a 500 mL Duran glass bottle. Modi ed pretreatment was conducted inside an ultrasonic processor (53 kHz, 90W), at the temperature of 35°C for 10 hours (Hermansyah et al 2019). Nevertheless, non-modi ed pretreatment was carried out in the shaker water bath for 12 hours.…”

Section: Pretreatmentmentioning

confidence: 99%

“…In the previous work, we have revealed an increase in cellulose content and a decrease in lignin content in OPEFB by performing a pretreatment using sequential peracetic acid and alkaline peroxide solution assisted by ultrasound (Hermansyah et al 2019). However, the evaluation and investigation of sugar production on the enzymatic hydrolysis process using OPEFB pretreated by sequential peracetic acid and alkaline peroxide assisted by ultrasound has not been carried out.…”

Section: Introductionmentioning

confidence: 98%

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Effect of Ultrasound-Assisted on Sequential Peracetic Acid and Alkaline Peroxide Pretreatment to The Enzymatic Hydrolysis of Oil Palm Empty Fruit Bunch

Putri

Perdani²,

Yohda

et al. 2021

Preprint

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Enzymatic hydrolysis of oil palm empty fruit bunch (OPEFB) that has been pretreated by modified pretreatment has been investigated in this study. The OPEFB used was pretreated by using sequential peracetic acid – alkaline peroxide solution. As the modification method, the assistance of pretreatment by ultrasound was conducted, in order to increase the enzyme accessibility. Therefore, it enhances the production of reducing sugar on the hydrolysis process. Prior to hydrolysis process, OPEFB was initially treated by using peracetic acid solution, comprise of CH3COOH (> 99%) and H2O2 (30% w/w), assisted by ultrasound for 3 hours at 35oC. Afterwards, OPEFB was treated by using alkaline peroxide solution, comprise of NaOH (40% w/w) and H2O2 (35% w/w), assisted by ultrasound for 10 hours at 35oC. OPEFB that has been pretreated was then subjected to enzymatic hydrolysis process using cellulase enzyme, in order to convert cellulose content into reducing sugar. Enzymatic hydrolysis was carried out at 50oC in a shaker incubator with 150 rpm for 48 hours. In this study, the effect of different enzyme concentration and hydrolysis time towards the sugar concentration in modified-pretreated OPEFB was observed and analyzed. Three different concentrations of enzyme were used, including 1.25, 2.5, and 5 g/L, and reducing sugar concentrations were analyzed at 30 and 45 minutes, and 1, 2, 4, 6, 24, 30, and 48 hours. Based on results, enzyme concentration has a significant effect to the production of reducing sugar. The reducing sugar concentrations obtained at the end of the hydrolysis process were 8.48, 11.06, 19.16 g/L, at the enzyme concentrations of 1.25, 2.5, and 5 g/L, respectively. At any hydrolysis time, the highest sugar concentration has been achieved on the highest enzyme concentration of 5 g/L. Moreover, the effective hydrolysis time were achieved at 6 hours, at all concentration of enzyme, since the production of reducing sugar were insignificant after 6 hours. This study showed an increase in reducing sugar production by 8.25% in the hydrolysis process using OPEFB pretreated by modified pretreatment compared to the non-modified pretreatment.

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“…The degradation of fiber and dissolving of lignin can be predominantly found in the intermediate cooking and bleaching process. The medium consistency oxygen delignification system as intermediate process completed by using chemical treatments, including acidic and basic treatments (Hermansyah et al, 2019). The alkaline treatment is an efficient method for delignification (Harahap et al, 2019), especially using sodium hydroxide (NaOH) to influence the physical properties of the fibers.…”

Section: Introductionmentioning

confidence: 99%

Improving Reaction Selectivity with NaOH Charges and Reaction Time in the Medium Consistency Oxygen Delignification Process

Irawan

Darmawan

Roesyadi

et al. 2020

IJTech

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As more delignification is targeted, fiber degradation becomes a main issue in the pulping process. Sodium hydroxide (NaOH) is highly related to pulp quality in the medium consistency oxygen delignification process. Accordingly, the purpose of this research was to study the effect of NaOH charges and reaction time on reaction selectivity during the pulping process through medium consistency oxygen delignification. This research used Eucalyptus pelita and Acacia mangium pulp with a kappa number (KaNo) of 17-18. The medium consistency oxygen delignification process condition included a temperature of 80°C and oxygen pressure of 1 bar, while the reaction times were 20, 40, 60, 80, and 100 min. The NaOH charges were 5, 10, 15, 20, and 25 kg/t of pulp. The analysis parameters used were KaNo and viscosity. The variation in reaction time did not show a significant change in KaNo. The increase in reaction time and NaOH charge variations, meanwhile, can reduce pulp viscosity. Higher NaOH values significantly increased the delignification degree, and the higher NaOH charges and reaction times together lowered the degree of polymerization (DP). The variation in reaction time indicated that with a longer reaction time, the lower the DP, and with a higher NaOH charge and longer reaction time, the lower the reaction selectivity.

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Delignification of Oil Palm Empty Fruit Bunch using Peracetic Acid and Alkaline Peroxide Combined with the Ultrasound

Cited by 19 publications

References 22 publications

Peracetic Acid Treatment as an Effective Method to Protect Wood Discoloration by UV Light

Peracetic Acid Treatment as an Effective Method to Protect Wood Discoloration by UV Light

Effect of Ultrasound-Assisted on Sequential Peracetic Acid and Alkaline Peroxide Pretreatment to The Enzymatic Hydrolysis of Oil Palm Empty Fruit Bunch

Improving Reaction Selectivity with NaOH Charges and Reaction Time in the Medium Consistency Oxygen Delignification Process

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