Optimization of maleic acid pretreatment of oil palm empty fruit bunches (OPEFB) using response surface methodology to produce reducing sugars

2021 ◽  
Vol 171 ◽  
pp. 113971
Author(s):  
Widya Fatriasari ◽  
Wildan Ulwan ◽  
Tri Aminingsih ◽  
Fahriya Puspita Sari ◽  
Fitria ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Oil Palm ◽  
Maleic Acid ◽  
Reducing Sugars ◽  
Acid Pretreatment ◽  
Empty Fruit Bunches

scholarly journals Model study on dilute acid pretreatment of argan pulp for bioethanol production using response surface methodology

2019 ◽  
Vol 8 (4) ◽  
pp. 290-301
Author(s):  
Fatima Zahra Zouhair ◽  
Younes En-Nahli ◽  
Mohammed Rachid Kabbour ◽  
Fatima Ebich ◽  
Aouatif Benali ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Reducing Sugars ◽  
Dilute Acid Pretreatment ◽  
Bioethanol Production ◽  
Dilute Acid ◽  
Operational Parameters ◽  
Acid Pretreatment ◽  
Model Study ◽  
Acid Type

The present work describes comparative dilute acid pretreatment of the argan pulp (residue produced during the argan oil extraction) used as an economical source for bioethanol production. Response surface methodology was used to optimize the pretreatment process and to explore the effect of operational parameters (acid concentration, temperature, time and biomass loading), depending on the acid type (HCl, H2SO4) and pretreatment approach, on total and reducing sugars recovery, in addition to phenolic compounds rate as inhibitors produced during pretreatment process. Experimental results predict an optimal yield of total and reducing sugars of 171.46 mg/ml and 54.83 mg/ml, respectively, were achieved at an optimized time of 30 min with 7% of sulfuric acid at 160°C using 40 % for biomass loading.

scholarly journals Peningkatan Produksi Gula Pereduksi dari Tandan Kosong Kelapa Sawit dengan Praperlakuan Asam Organik pada Reaktor Bertekanan

REAKTOR ◽  
2017 ◽  
Vol 16 (4) ◽  
pp. 199
Author(s):  
Fahriya Puspita Sari ◽  
Nissa Nurfajrin Solihat ◽  
Sita Heris Anita ◽  
Fitria Fitria ◽  
Euis Hermiati
Keyword(s):  
Enzymatic Hydrolysis ◽  
Oxalic Acid ◽  
Organic Acid ◽  
Oil Palm ◽  
Maleic Acid ◽  
Reducing Sugar ◽  
Sugar Production ◽  
Empty Fruit Bunch ◽  
Acid Pretreatment ◽  
Severity Factor

ENHANCEMENT OF REDUCING SUGAR PRODUCTION FROM OIL PALM EMPTY FRUIT BUNCH BY PRETREATMENT USING ORGANIC ACID IN PRESSURIZED REACTOR. Organic acids are potential to create more environmentally friendly process in the pretreatment of lignocellulosic biomass for bioethanol production. This study was aimed to investigate the influence of organic acid pretreatment in reducing sugar production in a pressurized reactor with various resident times and temperatures on enzymatic hydrolysis of OPEFB. Two different organic acids (maleic acid and oxalic acid) were used in the pretreatment of oil palm empty fruit bunch (OPEFB) using a pressurized reactor. Factorial design using three different temperatures (170, 180, and 190°C) and four resident times (15, 30, 45, and 60 min) were employed, followed by enzymatic hydrolysis. Each condition conducted two repetitions. Analysis was conducted on the reducing sugar that was produced after saccharification by means of the severity factor of each pretreatment condition. Maleic acid showed higher reducing sugar yield with lower severity factor than oxalic acid with the same operating conditions. The highest yield of reducing sugars (80.84%) was obtained using maleic acid at 170 for 60 minutes with severity factor of 1.836. Keywords: bioethanol; organic acid pretreatment; pressurized reactor; severity factor; oil palm empty fruit bunches;   Abstrak Asam organik berpotensi dalam membantu proses praperlakuan dari biomassa lignoselulosa untuk memproduksi bioetanol yang ramah lingkungan. Penelitian ini bertujuan untuk mengetahui pengaruh asam organik, suhu dan waktu operasi terhadap produksi gula pereduksi dengan reaktor bertekanan pada tandan kosong kelapa sawit. Dua asam organik yang berbeda yaitu asam oksalat dan asam maleat digunakan untuk proses praperlakuan tandan kosong kelapa sawit (TKKS) dengan bantuan reaktor bertekanan. Dalam proses praperlakuan digunakan tiga suhu yang berbeda yaitu suhu 170, 180, dan 190°C dan empat waktu operasi 15, 30, 45, dan 60 min yang dilanjutkan dengan proses hidrolisis enzimatis. Setiap kondisi dilakukan dua kali pengulangan. Analisa yang digunakan adalah analisa uji gula pereduksi dan severity factor pada kondisi tiap praperlakuan. Asam maleat menunjukkan hasil yang lebih baik dengan severity factor yang lebih rendah dibandingkan menggunakan asam oksalat dengan kondisi operasi yang sama. Hasil yang didapatkan menunjukkan bahwa praperlakuan tandan kosong kelapa sawit dengan bantuan reaktor bertekanan memiliki rendemen gula pereduksi optimum sebesar 80,84% dengan menggunakan asam maleat pada suhu 170°C selama 60 menit dengan severity factor sebesar 1,836. Kata kunci: bioetanol; praperlakuan asam organik; reaktor bertekanan; severity factor; tandan kosong kelapa sawit.

scholarly journals Disruption of Oil Palm Empty Fruit Bunches by Microwave-assisted Oxalic Acid Pretreatment

2017 ◽  
Vol 49 (3) ◽  
pp. 244 ◽  
Author(s):  
Nissa Nurfajrin Solihat ◽  
Fahriya Puspita Sari ◽  
Lucky Risanto ◽  
Sita Heris Anita ◽  
Fitria Fitria ◽  
...  
Keyword(s):  
Oxalic Acid ◽  
Oil Palm ◽  
Acid Pretreatment ◽  
Empty Fruit Bunches ◽  
Microwave Assisted

scholarly journals Optimization of Xylose Production from Sugarcane Trash by Microwave-Maleic Acid Hydrolysis

REAKTOR ◽  
2020 ◽  
Vol 20 (2) ◽  
pp. 81-88
Author(s):  
Euis Hermiati ◽  
Maulida Oktaviani ◽  
Riksfardini Annisa Ermawar ◽  
Raden Permana Budi Laksana ◽  
Lutfi Nia Kholida ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Acid Hydrolysis ◽  
Response Surface ◽  
Acid Concentration ◽  
Maleic Acid ◽  
Sugar Alcohol ◽  
Quadratic Regression ◽  
Microwave Assisted ◽  
Concentration Time ◽  
Xylose Production

Sugarcane trash contains significant amount of xylan that could be hydrolysed to xylose. The xylose could be further fermented to produce xylitol, a sugar alcohol that has low calories and does not cause carries of teeth. In this study we optimized the production of xylose from sugarcane trash by microwave-assisted maleic acid hydrolysis using response surface methodology (RSM). The factors optimized were acid concentration, time, and temperature. The xylose yield based on the weight of initial biomass was determined and it served as a response variable. Results show that acid concentration and interaction between time and temperature had significant effect on xylose yield. The quadratic regression model generated from the optimization was fit and can be used to predict the xylose yield after hydrolysis with various combinations of acid concentration, time, and temperature. The optimum condition for xylose production from sugarcane trash was using maleic acid of 1.52%, and heating at 176 °C for 6.8 min. At this condition the yield of xylose was 24.3% per initial biomass or 0.243 g/ g biomass.Keywords: maleic acid; microwave heating; response surface methodology; sugarcane trash, xylose

scholarly journals Optimization of Alkaline and Dilute Acid Pretreatment of Agave Bagasse by Response Surface Methodology

2015 ◽  
Vol 3 ◽  
Author(s):  
Abimael I. Ávila-Lara ◽  
Jesus N. Camberos-Flores ◽  
Jorge A. Mendoza-Pérez ◽  
Sarah R. Messina-Fernández ◽  
Claudia E. Saldaña-Duran ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Dilute Acid Pretreatment ◽  
Dilute Acid ◽  
Acid Pretreatment
Sign in / Sign up

Export Citation Format

Share Document