Optimization of continuous acid-catalyzed esterification for free fatty acids reduction in mixed crude palm oil using static mixer coupled with high-intensity ultrasonic irradiation

2013 ◽  
Vol 68 ◽  
pp. 193-199 ◽  
Author(s):  
Krit Somnuk ◽  
Pruittikorn Smithmaitrie ◽  
Gumpon Prateepchaikul
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Palm Oil ◽  
Ultrasonic Irradiation ◽  
High Intensity ◽  
Static Mixer ◽  
Crude Palm Oil ◽  
Acid Catalyzed ◽  
Mixed Crude

scholarly journals Fruit Stalk Extract from Chili Peppers (Capsicum annum L.) as a Natural Antioxidant to Inhibit Oxidation in Crude Palm Oil

2020 ◽  
Vol 23 (4) ◽  
pp. 124-128
Author(s):  
Rahmiwati Hilma ◽  
Eka Tri Setya Wulandari ◽  
Zaldi Arman
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Free Fatty Acids ◽  
Iodine Number ◽  
Palm Oil ◽  
Dry Weight ◽  
Chili Pepper ◽  
Total Phenolic ◽  
Crude Palm Oil ◽  
Capsicum Annum

Fruit stalk of chili pepper (Capsicum annum L.) so far is still an untapped waste. The content of active compounds in fruit and fruit stalk of chili pepper (C. annum L.) is known to have good antioxidant activity. The purpose of this study was to evaluate the extract of fruit stalk of chili pepper in inhibiting the oxidation of crude palm oil (CPO). In this study, the extraction of fruit stalk of chili pepper (C. annum L.) was carried out with n-hexane (from now on referred to as CHE) solvent and with ethanol solvent (from now on referred to as CEE). CHE and CEE were analyzed for total phenolic and flavonoid analyzes. Next, an evaluation of antioxidant activity was carried out using the DPPH method. The effectiveness test of adding the two extracts to the quality of CPO was carried out for ten days using a Completely Randomized Design (CRD) analysis. The parameters observed were peroxide numbers, free fatty acids, and iodine numbers. Data were analyzed by ANOVA and followed by a Least Significance Different (LSD) test. The results show that the total phenolic value is 0.257 mg QE/g dry weight in CEE and 0.003 mg QE/g dry weight in CHE. Total flavonoid values are 0.155 mg QE/g dry weight in CEE and 0.003 mg QE/g in CHE. IC50 values for DPPH test extract are 223.72 μg/mL in CEE and 953.77 μg/mL in CHE. The test results of the effectiveness of the two extracts against CPO show thin CEE, and CHE significantly (P <0.05) influences to CPO free fatty acids, peroxide number, and iodine number. Both extracts can protect CPO from oxidation. CEE is more effective in maintaining CPO quality for ten days with free fatty acid values (2.1%), peroxide value values 0.48 meq/kg, and iodine number 54.8. Furthermore, this result meets the CPO quality standard, according to SNI-01-2901-2006.

scholarly journals Postharvest Fruit Detachment in Oil Palm Bunches with Ethephon and Ethylene Gas Application

Agriculture ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1030
Author(s):  
Arutchelvam Balakrishnan ◽  
Mohd Ibnur Syawal Zakaria ◽  
Bee Aik Tan ◽  
Jaime Yoke Sum Low ◽  
Shwu Fun Kua ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Palm Oil ◽  
Oil Palm ◽  
Room Temperature ◽  
Indirect Method ◽  
Production Systems ◽  
Oil Quality ◽  
Crude Palm Oil ◽  
Fresh Fruit Bunches

The processing of oil palm fresh fruit bunches (FFB), together with loose fruits, in the current mill operation contributes to oil loss and high free fatty acids (FFA), affecting crude palm oil quality. Fruit detachment induced by ethephon and ethylene may mitigate the current processing issues. This study shows that a 0.50% (v/v) ethephon application by the evaporation method induced the highest fruit detachment of 30.8 ± 1.1% after 24 h at room temperature, with the FFA content in the extracted crude palm oil at 0.34 ± 0.09%. Ethephon application was effective on bunches between 14 and 28 kg, and fruit detachment was higher in ripe and underripe bunches at 24.1 ± 0.9% and 23.2 ± 0.1%, respectively. A significant fruit detachment of 47.2 ± 2.4% was achieved when the bunches were also stripped mechanically, but the FFA content increased almost 4-fold, from 1.0 ± 0.2% to 3.8 ± 1.2%. The application of ethylene gas at 750 ppm yielded 29.4 ± 1.9% fruit detachment. The findings present the possibility of using ethylene as an indirect method for minimizing oil loss without increasing the FFA content in future crude palm oil production systems.

scholarly journals ANALISIS KECACATAN PRODUK CRUDE PALM OIL (CPO) MENGGUNAKAN METODE QUALITY CONTROL CIRCLE (QCC) PADA PT.RAMAJAYA PRAMUKTI

2021 ◽  
Vol 8 (1) ◽  
pp. 243-251
Author(s):  
St Nova Meirizha ◽  
Dian Kristina
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Palm Oil ◽  
Success Factors ◽  
Fatty Acid Content ◽  
Crude Palm Oil ◽  
Effective Implementation ◽  
Research Journal ◽  
Business Person

Quality is the overall characteristics and characteristics of a product or service whose ability to satisfy needs, both expressed and implied (Irwan & Haryono, 2015). In this era of increasingly competitive industrialization, every business person who wants to win the competition in the industrial world will pay full attention to quality. QCC is a new concept to improve the quality and productivity of industrial/service work. It is evident that one of the success factors of industrialization in Japan is the effective implementation of QCC. In this research journal, the quality of crude palm oil (CPO) levels is decreasing. There are 3 types of defects, namely levels of FFA (Free Fatty Acids), levels of Moisture (Water) and levels of Dirt (Stool). Of these three, the most dominant are FFA levels and Moisture levels. Free fatty acid content (FFA) of 158 samples tested contained 150 samples of free fatty acids (FFA) which were outside the company standard. Then followed by moisture content with a total defect of 45 samples from 158 test samples. At the level of dirt (Dirt) there are absolutely no samples that are outside the company's standards.

Effects of Acid Catalyst Types and Concentrations on Free Fatty Acid Reduction in Mixed Crude Palm Oil Using Continuous Static Mixer

2013 ◽  
Vol 446-447 ◽  
pp. 1523-1527
Author(s):  
Krit Somnuk ◽  
Gumpon Prateepchaikul
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Palm Oil ◽  
Catalyst Concentration ◽  
Acid Catalyst ◽  
Acid Value ◽  
Esterification Reaction ◽  
Static Mixer ◽  
Crude Palm Oil ◽  
Mixed Crude

Free fatty acid (FFA) in mixed crude palm oil (MCPO) must be reduced to less than 1 wt.% or 2 mgKOH.g-1of acid value by the acid-catalyzed esterification process when the base-catalyzed transesterification was used to produce the biodiesel for the two-stage process. This study was to investigate the effects of acid catalyst types: sulfuric acid (H2SO4), phosphoric acid (H3PO4), and hydrochloric acid (HCL) at 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 vol.% of acid catalyst concentration on the reduction of acid value in MCPO by the continuous static mixer. Results indicated that H2SO4has the most significant variable affecting the acid value in MCPO. The acid catalyst concentration of 1.0 and 1.5 vol.% H2SO4can reduce the acid value to less than 2 mgKOH.g-1with 15 vol.% of methanol and 5-meter in the length of static mixer, while both H3PO4and HCL could not reduce the acid value was reduced to less than 2 mgKOH.g-1. Moreover, the results clearly indicated that HCL has the lowest significance effect on the acid value reduction in MCPO by the esterification reaction.

Feasibility of Using High-Intensity Ultrasound Assisted Biodiesel Production from Mixed Crude Palm Oil in Two-Step Process

2014 ◽  
Vol 875-877 ◽  
pp. 1687-1692 ◽  
Author(s):  
Krit Somnuk ◽  
Gumpon Prateepchaikul
Keyword(s):  
Fatty Acid ◽  
Reaction Time ◽  
Palm Oil ◽  
High Intensity ◽  
Biodiesel Production ◽  
Crude Palm Oil ◽  
High Intensity Ultrasound ◽  
Step Process ◽  
Electricity Cost ◽  
Mixed Crude

Biodiesel from a high free fatty acid (FFA) mixed crude palm oil (MCPO) can be produced to high fatty acid methyl ester (FAME) conversion by a two-step process. The first process is an acid-catalyzed esterification to reduce FFA in oil followed by a base-catalyzed transesterification process to produce biodiesel from esterified oil. In this study, the transesterification of esterified oil with methanol in the presence of potassium hydroxide (KOH) was performed in a 1,000 W ultrasonic homogenizer at a low frequency of 18 kHz. The use of high-intensity ultrasound to accelerate the reaction, the high surface power density of 1.62 W.mm-2 and the volumetric acoustic energy of 20 W.mL-1 were fixed. The objective of this study was to determine the various parameters (methanol concentration, KOH concentration, and initial temperature of oil) to produce the FAME conversion. The results showed that over 98 wt.% of FAME could be achieved with 5 g KOH/liter of oil, 15 vol.% of methanol, the total residence time of 20 seconds, and temperature of 30 oC. Moreover, the glycerides were rapidly converted to the FAME within reaction time of 10 seconds when the base-catalyst of 10 g KOH/liter of oil, and 20 vol.% of methanol were used. Consequently, the use of high-intensity ultrasonic irradiation can minimize the chemical cost, electricity cost, and reaction time.

Esterifikasi asam lemak bebas dalam minyak sawit mentah untuk produksi metilester

2018 ◽  
Vol 6 (3) ◽  
pp. 705
Author(s):  
Tirto Prakoso ◽  
Indra B Kurniawan ◽  
R Heru Nugroho
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Palm Oil ◽  
Diesel Fuel ◽  
Methyl Esters ◽  
Continuous Production ◽  
Chemical Properties ◽  
Crude Palm Oil ◽  
Produce Water ◽  
Alternative Diesel Fuel

Methyl esters are one of alkyl esters compound that used as alternative diesel fuel became popular. Methyl esters have similarities on physical and chemical properties with the diesel fuel produced from fossil oil; however it has less combustion and environmental emissions. As fossil oil become rare to be exploited, and the rapid environmental issues, the efforts to develop methyl esters as alternative diesel fuel become a prospective one. One method to produce methyl esters from free fatty acids of crude palm oil (CPO) is the two step esterification-transesterification reaction, each step produce the same final product, however differs in the side product. Esterification produce water and transesterfication produce glycerin. The reaction uses alcohol as main reactant beside the free fatty acids, it can be conducted in batch or continuous production. In this research, the investigation is only emphasized in the first step that is the esterification step to produce methyl esters from free fatty acids contained in crude palm oil. Methanol and sulfuric acid are used as reactant and catalyst respectively. Methyl esters produced by esterification is affected by reaction temperature, amounts of catalyst, and methanol volume. The increase in temperature improved esterification conversion from 19% in 50C to 98% in 60C. While the usage of the highest amount of catalyst, 5 ml/1-CPO, led to produced the highest conversion relative to the conversion from 1 and 3 ml/1-CPO catalyst. Furthermore, 10% amount of methanol per volume CPO produced higher yield than 8%.Keywords : Biodiesel,  CPO Free Fatty Acid Esterification, Methyl Ester ConversionAbstrak Metil ester merupakan suatu senyawa alkil ester yang dapat digunakan sebagai bahan bakar alternatif. Metil ester memiliki sifat fisik dan kimia yang hampir sam a dengan minyak diesel yang dihasilkan dari minyak bumi tetapi emisi pembakaran dari penggunaan ester metal lebih rendah dari pada emisi hasil penggunaan minyak solar. Seiring dengan semakin langkanya sumber minyak bumi dan semakin gencarnya isu lingkungan hidup, pengembangan ester metil sebagai bahan bakar pengganti minyak solar semakin prospektif. Pembuatan ester metil dari asam lemak bebas minyak sawit mentah (crude palm oil) dapat dilakukan dengan beberapa cara antara lain dengan reaksi esterifikasi dan transesterifikasi menggunakan alkohol. Reaksi-reaksi ini dapat dilaksanakan secara batch maupun kontinu. Pada penelitian yang telah dilakukan, pembuatan ester metil dari asam lemak bebas minyak sawit mentah dilakukan dengan reaksi esterifikasi secara batch, dengan reaktan berupa minyak sawit mentah dan metanol. Katalis yang digunakan adalah H2SO4. Konversi ester metil yang dihasilkan dipengaruhi oleh temperatur reaksi, konsentrasi katalis dan konsentrasi metanol. Kenaikan temperatur reaksi akan meningkatkan konversi dari 19% pada 50oC menjadi 98% pada 60oC. Dengan menggunakan konsentrasi katalis tertinggi 5ml/l CPO memicu konversi tertinggi relatif dibandingkan nilai konversi dari 1 dan 3 ml/l CPO. 10% metanol menghasilkan perolehan tinggi dibanding 8%.Kata Kunci: Biodiesel, EsterifikasiAsam Lemak Bebas CPO, Konversi Ester Metil

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