Conversion of rice husk into fermentable sugar by two stage hydrolysis

Salimi, M. N.; Lim, Sheh-Hong; Yusoff, A. H. M.; Jamlos, M. F.

doi:10.1088/1742-6596/908/1/012056

Cited by 12 publications

(10 citation statements)

References 13 publications

(14 reference statements)

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“…Similar research was conducted by Abraham [31], during biomass hydrolysis at 50 • C and 18 FPU g −1 he obtained the highest glucose yield. Salimi et al 2017 [32] optimized the enzymatic hydrolysis of lignocellulosic biomass using the RSM method. They used a temperature range of 45-60 • C and a pH of 4.5-6.0.…”

Section: Enzymatic Hydrolysis Processmentioning

confidence: 99%

Chemical and Enzymatic Treatment of Hemp Biomass for Bioethanol Production

2019

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In this study chemical and enzymatic treatment of hemp biomass were optimized to obtain maximum ethanol production. In the first stage, physical and chemical pretreatment of hemp biomass was carried out. It was found that the Tygra variety is susceptible to alkaline treatment at an optimum concentration of 2% NaOH. Next, the effect of NaOH on the value of reducing sugars and the chemical composition of the solid fraction before and after the treatment was determined. Hemp biomass before and after the chemical treatment was analysed by FTIR spectra and SEM. The effect of enzymatic hydrolysis, i.e., substrate content, temperature, time, pH and dose of enzyme by means of Response Surface Methodology on glucose content was determined. The highest glucose value was observed at 50 °C, in time process between 48 and 72 h, and the dose of enzyme was not less than 20 FPU·g−1. After the optimization of enzymatic hydrolysis two processes of ethanol fermentation from hemp biomass, SHF and SSF, were carried out. In the SHF process a 40% higher concentration of ethanol was obtained (10.51 g/L). In conclusion, hemp biomass was found to be an interesting and promising source to be used for bioethanol production.

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Section: Enzymatic Hydrolysis Processmentioning

confidence: 99%

Chemical and Enzymatic Treatment of Hemp Biomass for Bioethanol Production

2019

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“…[ 57 ] and Salimi et al. [ 46 ] also achieved the highest recovery of sugars from RH at 60 min. Saha et al.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, Salimi et al. [ 46 ] achieved a maximum fermentable sugar production of 0.0751 g L −1 with 2% v/v H 2 SO 4 and 60 min. It is noted that in both studies the concentration of acid that resulted in better sugar recovery is lower than that found in the present study for RB and RH (5.3% v/v), which can be attributed to the type of acid used.…”

Section: Resultsmentioning

confidence: 99%

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Estimation of Bioethanol, Biohydrogen, and Chemicals Production from Biomass Wastes in Brazil

Soares

Confortin

Todero

et al. 2022

CLEAN Soil Air Water

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The aim of this study is to evaluate the potential of some selected biomass waste to be used as feedstock in the production of bioethanol and biohydrogen along with chemicals in Brazil. The substrates are rice bran (RB), rice husk (RH), brewer's spent grain (BSG), soybean waste (SW), and wheat waste (WW). These substrates are treated by diluted acid hydrolysis in an autoclave under different conditions of acid concentration, temperature, reaction time, and moisture. The highest concentration of reducing sugars (RS) of RH, RB, BSG, SW, and WW hydrolysates, measured by the 3,5-dinitrosalicylic acid method (DNS), is 118.16 ± 2.85, 170.39 ± 20.47, 600.97 ± 23.05, 80.38 ± 2.39, and 228.04 ± 3.97 g RS kg −1 substrate (dry basis), respectively. Total sugar concentration (cellobiose, glucose, xylose, arabinose) in the RH, RB, BSG, SW, and WW hydrolysates (with highest concentration of RS) is 56.54 ± 3.65, 42.99 ± 0.84, 72.18 ± 2.34, 42.48 ± 0.18, and 78.03 ± 3.06 g sugar kg −1substrate (dry basis). The total potential of bioethanol and biohydrogen production from the biomass assessed is 199.61 million L per year and 96.14 million m 3 per year, respectively. Therefore, the assessed biomass is proved to be a potential biorefinery feedstock.

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“…Similar research was conducted by Abraham [29]; during biomass hydrolysis at 50 • C and 18 FPU•g −1 of solid, the highest glucose yield was obtained. Salimi and others [30] optimized the enzymatic hydrolysis of lignocellulosic biomass using the RSM method. They applied the temperature range of 45-60 • C and the pH of 4.5-6.0.…”

Section: Separate Hydrolysis and Fermentation (Shf)mentioning

confidence: 99%

Polish Varieties of Industrial Hemp and Their Utilisation in the Efficient Production of Lignocellulosic Ethanol

2021

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Nowadays, more and more attention is paid to the development and the intensification of the use of renewable energy sources. Hemp might be an alternative plant for bioenergy production. In this paper, four varieties of Polish industrial hemp (Białobrzeskie, Tygra, Henola, and Rajan) were investigated in order to determine which of them are the most advantageous raw materials for the effective production of bioethanol. At the beginning, physical and chemical pretreatment of hemp biomass was carried out. It was found that the most effective is the alkaline treatment with 2% NaOH, and the biomasses of the two varieties were selected for next stages of research: Tygra and Rajan. Hemp biomass before and after pretreatment was analyzed by FTIR and SEM, which confirmed the effectiveness of the pretreatment. Next, an enzymatic hydrolysis process was carried out on the previously selected parameters using the response surface methodology. Subsequently, the two approaches were analyzed: separated hydrolysis and fermentation (SHF) and a simultaneous saccharification and fermentation (SSF) process. For Tygra biomass in the SHF process, the ethanol concentration was 10.5 g∙L−1 (3.04 m3·ha−1), and for Rajan biomass at the SSF process, the ethanol concentration was 7.5 g∙L−1 (2.23 m3·ha−1). In conclusion, the biomass of Polish varieties of hemp, i.e., Tygra and Rajan, was found to be an interesting and promising raw material for bioethanol production.

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Conversion of rice husk into fermentable sugar by two stage hydrolysis

Cited by 12 publications

References 13 publications

Chemical and Enzymatic Treatment of Hemp Biomass for Bioethanol Production

Chemical and Enzymatic Treatment of Hemp Biomass for Bioethanol Production

Estimation of Bioethanol, Biohydrogen, and Chemicals Production from Biomass Wastes in Brazil

Polish Varieties of Industrial Hemp and Their Utilisation in the Efficient Production of Lignocellulosic Ethanol

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