Effect of coagulant/flocculant dosage and pH to water recovery of black liquor wastewater in bioethanol production from oil palm empty fruit bunch using response surface methodology

2017 ◽  
Author(s):  
Dian Burhani ◽  
Anissa Winarni ◽  
Ajeng Arum Sari
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Oil Palm ◽  
Black Liquor ◽  
Water Recovery ◽  
Empty Fruit Bunch ◽  
Bioethanol Production

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.

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%.

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