scholarly journals Biodiesel production from rapeseed oil and low free fatty acid waste cooking oil using a cesium modified natural phosphate catalyst

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 41065-41077
Author(s):  
Boutaina Rezki ◽  
Younes Essamlali ◽  
Mina Aadil ◽  
Nawal Semlal ◽  
Mohamed Zahouily
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Rapeseed Oil ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Natural Phosphate ◽  
Cooking Oil ◽  
Acid Waste

Cesium modified natural phosphate was investigated as a catalyst in biodiesel production from rapeseed oil and low free fatty acids used in cooking oil.

scholarly journals ESTERIFIKASI DAN DEASIDIFIKASI MINYAK JELANTAH PADA PEMBUATAN BIODIESEL MENGGUNAKAN KATALIS ABU TONGKOL JAGUNG

Jurnal Kimia ◽  
2020 ◽  
pp. 161
Author(s):  
R. E. Y. Adu
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Volume Ratio ◽  
Acid Catalyst ◽  
Waste Cooking Oil ◽  
Corn Cobs ◽  
Cooking Oil ◽  
Alkali Neutralization

Esterification and deacidification of waste cooking oil using alkali neutralization for biodiesel production using corncob ash as an alternative base catalyst was carried out. This study aimed to attainone of the desired transesterification conditionsby reducing free fatty acids content of waste cooking oil. Esterification was carried out by reacting waste cooking oil and methanol with certain volume ratio and acid catalyst (H2SO4) at 50oC for 4 hours. Deacidification was carried out by adding 0.5 N NaOH solution (15% excess alkali) at 60oC for 30 minutes. Esterification of waste cooking oil using acid catalyst before transesterification with corn cobs ash catalyst significantly increased the efficiency of free fatty acid conversion (92.69%) under volume ratio of 25% methanol /oil and 0.5% acid catalyst for 4 hours reaction. Deacidification of esterified oil with FFA content of 2.29 mg KOH /g oil through alkali neutralization at 55oC using alkaline content of 0.8 N reduces free fatty acid content to 0.47 mg KOH /g oil. Transesterification results showed that biodiesel component of waste cooking oil was dominated by polyunsaturated fatty acids (linoleic acid / C18-2), monounsaturated fatty acids (palmitic acid / C16-1 and oleic acid / C18-1) and saturated acids (palmitic / C16-0 and stearic acid / C18-0). Most of the biodiesel products were similar to those of the diesel physical characters. Biodiesel made of waste cooking oil meets the biodiesel quality standard (SNI 7182: 2015) for such parameters of density, viscosity, acid number, saponification value, iodine number and cetane. Esterification and neutralization process are effective in reducing free fatty acids content of waste cooking oil before being used in transesterification with corn cobs ash catalyst. Keywords: esterification, neutralization, alkali, waste cooking oil, biodiesel, corn cobs ash

scholarly journals DECREASE IN FREE FATTY ACID CONTENT AND COLOR AT USED COOKING OIL WITH ACTIVATED CARBON OF REEDS (Imperata cylindrica L. Raeusch)

1970 ◽  
pp. 87-94
Author(s):  
Samsuar Samsuar
Keyword(s):  
Fatty Acids ◽  
Activated Carbon ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Fatty Acid Content ◽  
Optimum Concentration ◽  
Imperata Cylindrica ◽  
Cooking Oil ◽  
Used Cooking Oil

Cooking oil is one of the foods that are needed by the community in daily life. The use of cooking oil continuously at high temperatures, produces cooking oil that is no longer feasible to use. Therefore, it’s necessary to purify used cooking oil so that it can be reused for non-foood purposes such as making soap or biodiesel fuel. This purification process is utilie the activated carbon of reeds (Imperata cylindrica L. Raeusch) as an adsorbent to reduce the levels of free fatty acids and colors in used cooking oil. Free fatty acid content test using acid base titration method and color change using Uv-Vis spectrofotometry method. This study aims to determine the optimum concentration of reeds activated carbon as an adsorbent in reducing the levels of free fatty acids and colors in used cooking oil, which consists of the concentration of reeds activated carbon which is a consentration of 2,5; 5; 7,5; 10; dan 12,5%. The results of variance analysis showed the optimum concentration of reeds activated carbon to reduce the levels of free fatty acids and colors absorbance in used cooking oil at a concentration of 7,5%. The percentage of decreasing levels of free fatty acids gorengan and pecel lele are 78.57% and 78.85%. Decrease in absorbance of gorengan color from 1,792% to 0,384% and the pecel lele color absorbance from 2,521 to 0,515. Keywords : Activated Carbon,Color, Free Fatty Acid, Reeds, and Used Cooking Oil.

scholarly journals ARANG AMPAS TEBU UNTUK MENURUNKAN KADAR ASAM LEMAK BEBAS MINYAK GORENG BEKAS

2018 ◽  
pp. 189-193
Author(s):  
P Purwati ◽  
Tri Harningsih
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Fatty Acid Content ◽  
Cooking Oil ◽  
Used Oil ◽  
Used Cooking Oil ◽  
Lower Free Fatty Acid

ABSTRAK Minyak digunakan secara berulangkali mengakibatkan penurunan kualitas minyak. Salah satunya adalah peningkatan asam lemak bebasnya. Limbah ampas tebu yang diubah ke dalam bentuk arang digunakan menurunkan asam lemak bebas pada minyak goreng bekas. Penambahan arang ampas tebu dengan variasi massa dapat menurunkan asam lemak bebas. Asam lemak bebas minyak bekas sebelum ditambah dengan arang ampas tebu adalah 0,62 %. Angka tersebut mengalami penurunan setelah penambahan variasi massa ampas tebu dimulai dengan 2,5 gram; 5,0 gram; 7,5 gram; 10,0 gram dan 12,5 gram. Hasil asam lemak bebas berturut-turut 0,61%; 0,55%; 0,48%; 0,45%; 0,43%. Kondisi optimum dari massa arang ampas tebu sebesar 12,5 gram. Prosentase penurunan asam lemak bebas sebesar 30,41 % dengan kadar asam lemak bebas dari sebelum dilakukan adsorbsi sebanyak 0,61% menjadi 0,43%.   Kata kunci: arang ampas tebu, asam lemak bebas, minyak goreng bekas       ABSTRACT Oils used repeatedly will result in a decrease in the quality of oil. One of which is the increase in free fatty acids. The waste bagasse which is converted into charcoal form used to lower free fatty acid in used oil casting. The addition of charcoal of bagasse with variation of mass can decrease free fatty acid. The fatty acid free of used oil before it is added with sugarcane bagasse is 0,62%. The number decreases after the addition of variation of bagasse mass begins with 2,5 grams; 5,0 grams; 7,5 grams; 10,0 grams and 12; 5 grams. Free fatty acids result are 0,61%; 0,55%; 0,48%; 0,45%; 0; 43% respectively. The optimum condition from the mass of charcoal of bagasse is 12,5 grams. Percentage of free fatty acid decrease of 30,41% with free fatty acid content from before adsorbs 0,61% to 0,43%.   Keywords: charcoal of bagasse, free fatty acids, used cooking oil

scholarly journals Penurunan Bilangan Peroksida Dan Asam Lemak Bebas Pada Minyak Jelantah Menggunakan Serbuk Mahkota Dewa

2020 ◽  
Vol 2 (2) ◽  
pp. 83-87
Author(s):  
Mutiara Putri Utami Susanto ◽  
Kenny Kencanawati ◽  
Dwi Tia Septiani ◽  
Sani Nurahayu
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Free Fatty Acid ◽  
Free Fatty Acids ◽  
Fatty Acid Analysis ◽  
Peroxide Number ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Stirring Time

The study used mahkota dewa as adsorben to decrease of the peroxide number and free fatty acids on the used cooking oil with immersion variations for 2 days dan 3 days and also concentration variations of mahkota dewa 5 % w/v, 10 % w/v, and 20 % w/v. The results of the peroxide analysis test still exceed the required number of SNI namely 10 meq O2/kg and the results of the free fatty acid analysis test in the sample with immersion and stirring time for 2 days and 3 days the concentration of  mahkota dewa 20 % w/v has met the SNI, which is 1.04 % and 0.91%.

scholarly journals Analisis Minyak Jelantah Sebagai Bahan Bakar Biodiesel dengan Proses Transesterifikasi

2018 ◽  
Vol 1 (1) ◽  
pp. 16 ◽  
Author(s):  
Hadrah Hadrah ◽  
Monik Kasman ◽  
Fitria Mayang Sari
Keyword(s):  
Fatty Acid ◽  
Free Fatty Acid ◽  
Sodium Hydroxide Solution ◽  
Quality Standard ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Cooking Oil ◽  
Used Oil ◽  
Used Cooking Oil ◽  
Biodiesel Quality

Waste cooking oil is used oil that has been used for domestic purposes and has undergone changes, both physically and chemically. One effort that can be done to reduce the adverse effects of used cooking oil is changed the material used cooking oil into biodiesel. In this study of biodiesel production from waste cooking oil is done by using biodiesel transesterification reaction as generally through a pretreatment in order to reduce the number of Free Fatty Acid in cooking oil. The high number of Free Fatty Acid will complicate the separation of glycerol from biodiesel so that production of biodiesel will be slight. Test parameters of biodiesel quality produced by  transesterification process refers to the Indonesian biodiesel quality standard ISO 7182: 2015. The production of biodiesel from used cooking oil in this experiment using variations methanol and sodium hydroxide solution ratio to the used cooking oil is 1: 2; 1: 4 and 1: 8. Test results showed that the quality of biodiesel is in compliance with ISO 7182: 2015 on the parameters of viscosity, density and flame test. While the Free Fatty Acids remained above the quality standard ISO 7182: 2015.Keywords :    Waste cooking oil, Transesterification, Biodiesel

Free fatty acids esterification of waste cooking oil and its mixtures with rapeseed oil and diesel

Fuel ◽  
2013 ◽  
Vol 108 ◽  
pp. 612-619 ◽  
Author(s):  
D.C. Boffito ◽  
C. Pirola ◽  
F. Galli ◽  
A. Di Michele ◽  
C.L. Bianchi
Keyword(s):  
Fatty Acids ◽  
Free Fatty Acids ◽  
Rapeseed Oil ◽  
Waste Cooking Oil ◽  
Cooking Oil
Sign in / Sign up

Export Citation Format

Share Document