Esterification of jatropha oil by sequential ultrasonic irradiation with auto-induced temperature rise and dosing of methanol and sulfuric acid catalyst

2014 ◽  
Vol 45 (4) ◽  
pp. 1523-1531 ◽  
Author(s):  
Cesar Augusto Andrade-Tacca ◽  
Chia-Chi Chang ◽  
Yi-Hung Chen ◽  
Do-Van Manh ◽  
Ching-Yuan Chang
Keyword(s):  
Sulfuric Acid ◽  
Ultrasonic Irradiation ◽  
Temperature Rise ◽  
Acid Catalyst ◽  
Jatropha Oil ◽  
Sulfuric Acid Catalyst

scholarly journals The Carbon Effect in Biodiesel Synthesis

Al-Kimia ◽  
2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Mohammad Arfi Setiawan ◽  
Brilian Gema Morentera
Keyword(s):  
Refractive Index ◽  
Sulfuric Acid ◽  
Methyl Ester ◽  
Physical Properties ◽  
Acid Catalyst ◽  
Esterification Reaction ◽  
Jatropha Oil ◽  
Base Catalysts ◽  
Biodiesel Synthesis ◽  
Sulfuric Acid Catalyst

Biodiesel is synthesized from the trans-esterification reaction of vegetable oil and alcohol using a catalyst such as acids, bases or enzymes. The acid catalyst that is often used is sulfuric acid; H2SO4, and HCl while most of base catalysts are NaOH and KOH. The aim of this study is to determine the effect of carbon derived from sugar heating in the synthesis of biodiesel with a sulfuric acid catalyst; H2SO4. Trans-esterification reaction of Jatropha oil and methanol with sulfuric acid catalyst was done with oil and methanol at 1:9 ratio. The results showed that (1) the physical properties of the biodiesel was synthesized with carbon-H2SO4 has a difference with physical properties the biodiesel was synthesized by sulfuric acid (2) carbon-H2SO4 was used in the trans-esterification reaction of Jatropha oil and methanol to produce methyl ester character is the density of 0.889 g / mL, 24.59 cSt viscosity and refractive index of 1.464, (3) methyl ester produced from the reaction of trans-esterification of Jatropha oil and methanol with sulfuric acid catalyst has a character that is a density of 0.882 g / mL, 11.70 cSt viscosity and refractive index of 1.458.

Esterification of jatropha oil via ultrasonic irradiation with auto-induced temperature-rise effect

Energy ◽  
2014 ◽  
Vol 71 ◽  
pp. 346-354 ◽  
Author(s):  
Cesar Augusto Andrade-Tacca ◽  
Chia-Chi Chang ◽  
Yi-Hung Chen ◽  
Do-Van Manh ◽  
Ching-Yuan Chang ◽  
...  
Keyword(s):  
Ultrasonic Irradiation ◽  
Temperature Rise ◽  
Jatropha Oil

scholarly journals The paper-forming properties of hemp fire peroxide cellulose in combination with wood sulphate cellulose

2021 ◽  
Vol 2094 (5) ◽  
pp. 052043
Author(s):  
R A Marchenko ◽  
R Z Pen ◽  
I L Shapiro ◽  
Y A Ambrosovich
Keyword(s):  
Hydrogen Peroxide ◽  
Sulfuric Acid ◽  
Cannabis Sativa ◽  
Sulfuric Acid Concentration ◽  
Acid Catalyst ◽  
Strength Properties ◽  
Mixed Composition ◽  
Deciduous Wood ◽  
Sulfuric Acid Catalyst ◽  
Hardwood Pulp

Abstract Hemp fire (Cannabis sativa) was delignified with the reaction mix “acetic acid - hydrogen peroxide - sulfuric acid catalyst - water” under sulfuric acid concentration of 0.45%, liquid module of 6, and temperature of 85 ° C. The cellulose was ground to 34 … 36°SHR and mixed in different ratios in compliance with the simplex-centroid experimental design with bleached sulfate softwood and hardwood pulp. The influence of the mixed composition formulations on the main strength properties of paper castings has been studied. It has been concluded that technical cellulose obtained from hemp fire applying this method, can be used for paper products manufacturing in combination with sulphate cellulose from coniferous and deciduous wood.

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