scholarly journals RESPONSE SURFACE METHODOLOGY APPLIED TO OXALIC ACID HYDROLYSIS OF OIL PALM EMPTY FRUIT BUNCH BIOMASS FOR D-XYLOSE PRODUCTION

2020 ◽  
pp. 172-176
Author(s):  
HERMAN SURYAD ◽  
ARRY YANUAR ◽  
HARMITA ◽  
PUTRI WINNY RACHMADANI
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Oxalic Acid ◽  
Response Surface ◽  
Constant Temperature ◽  
Acid Concentration ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Hydrolysis Of ◽  
Oxalic Acid Concentration

Objective: The study aimed to identify the best conditions using oxalic acid for hydrolysis of hemicellulose in oil palm empty fruit bunch (OPEFB)biomass.Methods: The analytical method of high-performance liquid chromatography (HPLC) was using a SUPELCOSIL LC-NH2 column, refractive indexdetection detector, and three compositions of the mobile phase. At first, the hydrolysis of hemicellulose in OPEFB powder was optimized by applyinga response surface methodology. A three-variable, six-central composite design was used for the experiments. Temperature (between 95°C and135°C), reaction time (between 10 and 110 min), and oxalic acid concentration (between 1% and 7% [w/v]) were evaluated by running 15 differentexperiments at constant biomass concentrations. Then, hydrolysis was optimized again at the constant temperature selected with three variables:OPEFB concentration, reaction time, and oxalic acid concentration. Hydrolysate samples were detoxified with carbon active, and furfural compoundwas analyzed by gas chromatography with flame ionization detector.Results: The optimum condition of HPLC was using acetonitrile: water (9:1) at a flow rate of 1.0 ml/min. The first hydrolysis results showeda high yield of D-xylose produced, which was 6.40 g D-xylose/100 g OPEFB biomass, with a xylose recovery of 93.8%. However, this result wasnot yet optimum. Further hydrolysis at constant temperature experiment produced the highest xylose yield of 13.13%, equivalent to 32 g/lD-xylose.Conclusion: The yield of D-xylose from mild hydrolysis using oxalic acid was similar to that using dilute sulfuric acid as used in the previous studyby Rahman et al.

Optimization Studies on Acid Hydrolysis of Pretreated Oil Palm Empty Fruit Bunch for Production of Xylose by Application of Response Surface Methodology

2013 ◽  
Vol 699 ◽  
pp. 77-82 ◽  
Author(s):  
S. Duangwang ◽  
C. Sangwichien
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Acid Hydrolysis ◽  
Response Surface ◽  
Reaction Temperature ◽  
Oil Palm ◽  
Temperature Reaction ◽  
Empty Fruit Bunch ◽  
H2so4 Concentration ◽  
Hydrolysis Of

Oil palm empty fruit bunch is a lignocellulosic material from palm oil plantations. It is a potential source of xylose which can be used as a raw material for production of xylitol. Using of lignocellulosic waste for bioconversion to fuels and chemicals is justifiable as these materials are low cost, renewable and widespread sources of sugars. The objective of the present study was to determine the effect of H2SO4 concentration, reaction temperature and reaction time for acid hydrolysis of pretreated OPEFB, pretreated OPEFB with reaction temperature, reaction time and NaOH concentration were 130 °C, 40 min and 15% (w/v), respectively to achieve high xylose yield. Batch reactions were carried out under various reaction temperature, reaction time and H2SO4 concentration. Response Surface Methodology (RSM) was followed to optimize acid hydrolysis in order to obtain high yield of xylose. The optimum reaction temperature, reaction time and H2SO4 concentration were found to be 140 °C, 90 min and 7% (w/v), respectively. The maximum value of xylose was obtained 56.39 g/l by using the above condition. The best result of xylose yield obtained was 126%.

Optimizing Alkali Pretreatment of Oil Palm Empty Fruit Bunch for Ethanol Production by Application of Response Surface Methodology

2012 ◽  
Vol 622-623 ◽  
pp. 117-121 ◽  
Author(s):  
Sairudee Duangwang ◽  
Chayanoot Sangwichien
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Response Surface ◽  
Reaction Temperature ◽  
Oil Palm ◽  
Low Cost ◽  
Raw Material ◽  
Temperature Reaction ◽  
Empty Fruit Bunch ◽  
Alkali Pretreatment

Oil palm empty fruit bunch (OPEFB) is a potential source of cellulose which can serve as a promising raw material for the production of ethanol. The increasing interest on use of lignocellulosic waste for bioconversion to fuels and chemicals are justifiable as these materials are low cost, renewable and widespread sources of sugars. The objective of the present study was to determine the effect of NaOH concentration, reaction temperature and reaction time for alkali pretreatment to increase the amount of cellulose for hydrolysis to achieve high glucose yield. Batch reactions were carried out under various reaction temperature, reaction time and NaOH concentration. Response Surface Methodology (RSM) was followed to optimize the alkali pretreatment in order to obtain high amount of cellulose (%). The optimum reaction temperature, reaction time and NaOH concentration were found to be 130 ˚c, 40 min and 15% (w/v), respectively. The maximum value of cellulose was obtained 68.8% by using the above condition. 19.96 g/L glucose was achieved when reaction was carried out at 130 ˚c for time period of 90 min when 6% (w/v) of H2SO4 concentration maintained.

Response Surface Methodology Optimization and Kinetic Study of Ultrafiltration-Enhanced, SCER-catalyzed Hydrolysis of Lard

2019 ◽  
Vol 17 (8) ◽  
Author(s):  
Enmin Lv ◽  
Shaoxuan Ding ◽  
Jie Lu ◽  
Zhuang Li ◽  
Lixiong Du ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Reaction Time ◽  
Response Surface ◽  
Membrane Separation ◽  
Molar Ratio ◽  
Transmembrane Pressure ◽  
Cleaning Efficiency ◽  
Membrane Cleaning ◽  
Exponential Factor ◽  
Hydrolysis Of

Abstract The integration process of polyethersulphone (PES) ultrafiltration with catalytic hydrolysis of lard was optimized by response surface methodology (RSM). The influences of molar ratio of water to lard, reaction time and transmembrane pressure on the fatty acids (FAs) yield were investigated. Results showed that the maximum FAs yield of 99.52 % was obtained under the optimized conditions of molar ratio of water to lard of 6.0:1.0, reaction time of 10.0 h and transmembrane pressure of 100.0 kPa. Moreover, the membrane cleaning efficiency was studied after four cleanings. Furthermore, the kinetic model of membrane separation process was investigated and the activation energy and pre-exponential factor were determined.

scholarly journals Isolation of Nanocrystalline Cellulose from oil palm empty fruit bunch – A response surface methodology study

2016 ◽  
Vol 60 ◽  
pp. 04009 ◽  
Author(s):  
Yee Kai Song ◽  
Irene Mei Leng Chew ◽  
Thomas Shean Yaw Choong ◽  
Jully Tan ◽  
Khang Wei Tan
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Oil Palm ◽  
Nanocrystalline Cellulose ◽  
Empty Fruit Bunch

scholarly journals Glucose and Xylose Productions From Oil Palm Empty Fruit Bunch by Hydrolysis With Enzyme and Acid Using Response Surface Methodology.

2021 ◽  
Author(s):  
Santat Sinjaroonsak ◽  
Aran H-Kittikun ◽  
Thanongsak Chaiyaso ◽  
Wasana Suyotha
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Oil Palm ◽  
Empty Fruit Bunch ◽  
Solid Ratio ◽  
Alkaline Peroxide ◽  
Hydrolysis Process ◽  
Cellulosic Waste ◽  
Palm Oil Mill ◽  
Hcl Concentration

Abstract Oil palm empty fruit bunch (EFB) is a major cellulosic waste from a palm oil mill. The use of EFB for bioconversion to fuel and valuable products is possible because this biomass is a cheap, renewable and abundantly available. This study was aimed to produce sugars from the alkaline peroxide pretreated EFB (APEFB) by hydrolysis with a commercial enzyme (iKnowzyme acid 2XL cellulase) in comparison with hydrochloric acid. Response surface methodology (RSM) was applied to improve the hydrolysis process. For an enzymatic hydrolysis, the optimum enzyme dose of 40 U/g APEFB and the liquid to solid ratio of 10 ml/g APEFB were investigated at 150 rpm and 50°C for 120 h. After saccharification, glucose and xylose obtained were 65.71 g/l (0.66 g/g APEFB) and 2.14 g/l (0.02 g/g APEFB), respectively. Many acids (acetic, formic, hydrochloric (HCl), nitric, orthophosphoric and sulfuric acids) were used to hydrolyze APEFB. The result showed that HCl was the best acid to produce glucose and xylose from APEFB with low furfural and hydroxymethylfurfural productions. The optimum HCl concentration and temperature for APEFB saccharification were 5.85% (w/v) acid at 114°C for 90 min. The glucose, xylose, furfural, and hydroxymethylfurfural obtained under these conditions were 10.70 g/l (0.11 g/g APEFB), 15.30 g/l (0.15 g/g APEFB), 2.34 g/l (0.02 g/g APEFB) and 0.67 g/l (0.007 g/g APEFB), respectively.

Sign in / Sign up

Export Citation Format

Share Document