Research of Synthesizing Biodiesel from Suaeda Salsa by Ultrasonic-Assisted Transesterification

2011 ◽  
Vol 189-193 ◽  
pp. 3925-3931 ◽  
Author(s):  
Qing Li Yang ◽  
Feng Zhu ◽  
Jie Sun ◽  
Song Qin
Keyword(s):  
Reaction Time ◽  
Production Rate ◽  
Reaction Temperature ◽  
Biodiesel Production ◽  
Suaeda Salsa ◽  
Ultrasonic Frequency ◽  
Ultrasonic Power ◽  
Technological Parameters ◽  
Ultrasonic Assisted ◽  
Catalyst Dosage

Suaeda salsa oil was taken as raw materials to produce biodiesel by ultrasonic-Assisted transesterification. Single factor experiment and the orthogonal experiment combination design were adopted to study the effects of ultrasonic frequency, ultrasonic power，reaction temperature ，reaction time，catalyst dosage and mole ratio of methanol to oil on biodiesel production rate. The order of factors that influence the biodiesel production rate within the experimental range was as follows: catalyst dosage＞reaction time＞reaction temperature＞mole ratio of methanol to oil. The optimal technological parameters should be as follows: ultrasonic frequency 28kHz, ultrasonic power 210W, reaction temperature 65 , reaction time 10min,catalyst dosage 0.3%and mole ratio of methanol to oil 6, and biodiesel production rate is 97.93% under such conditions.

Biodiesel Production through Direct Transesterification of Waste Cooking Oil with Alcohol via Ultrasonic Wave

2013 ◽  
Vol 389 ◽  
pp. 12-16
Author(s):  
Yong Feng Kang ◽  
Hua Jin Shi ◽  
Lin Ge Yang ◽  
Jun Xia Kang ◽  
Zi Qi Zhao
Keyword(s):  
Reaction Time ◽  
Reaction Temperature ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Ultrasonic Power ◽  
Cooking Oil ◽  
Biodiesel Synthesis ◽  
Optimum Reaction ◽  
Ester Exchange Reaction

Biodiesel is prepared from waste cooking oil and methanol. The ester exchange reaction is conducted under ultrasonic conditions with alkali as the catalysts. Five factors influencing on the transesterification reaction of biodiesel production are discussed in this study, including the reaction time, reaction temperature, catalyst amount, methanol to oil molar ratio, ultrasonic power. A series of laboratory experiments were carried out to test the conversion of biodiesel under various conditions. The process of biodiesel production was optimized by application of orthogonal test obtain the optimum conditions for biodiesel synthesis. The results showed that the optimum reaction conditions were:molar ratio of oil to methanol 8:1,catalysts 1.2g KOH/100g oil,reaction temperature 70°C, reaction time 50 min,Ultrasonic power 400W. The conversion may up to 96.48%.

scholarly journals Synthesis of a New Copper-Based Supramolecular Catalyst and Its Catalytic Performance for Biodiesel Production

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Fei Chang ◽  
Chen Yan ◽  
Quan Zhou
Keyword(s):  
Reaction Time ◽  
High Activity ◽  
Reaction Temperature ◽  
Mesoporous Structure ◽  
Catalytic Performance ◽  
Biodiesel Production ◽  
Xanthium Sibiricum ◽  
Catalyst Dosage

A new copper-based supramolecular (β-cyclodextrins, β-CD) catalyst was synthesized and used for transesterification of Xanthium sibiricum Patr oil to biodiesel. This catalyst exhibited high activity (88.63% FAME yield) in transesterification under the ratio of methanol-oil: 40 : 1; catalyst dosage: 8 wt.%; reaction temperature: 120°C; and reaction time: 9 h. The XRD, SEM, TEM, XPS, and BET characterization results showed that Cu-β-CD catalyst was amorphous and had clear mesoporous structure (17.2 nm) as compared with the native β-CD. This phenomenon is attributed to the coordination of Cu and β-CD.

Optimisation of Alkaline Ethanolysis of Biodiesel Yield from Nigerian Coconut Oil using One Variable at a Time (OVAT) Approach

2018 ◽  
Vol 1 (3) ◽  
pp. 166-169
Author(s):  
O.D. Samuel
Keyword(s):  
Reaction Time ◽  
Specific Gravity ◽  
Cloud Point ◽  
Ethyl Ester ◽  
Reaction Temperature ◽  
Pour Point ◽  
Cocos Nucifera ◽  
Coconut Oil ◽  
Biodiesel Production ◽  
Catalyst Dosage

In this study, coconut (Cocos nucifera) oil has been identified as a feedstock for biodiesel production. The determination ofoptimal feedstocks ratio (of ethanol/coconut oil, v/v. % ratio) was studied. The reaction was executed at different ethanol/coconut oil ratios: 10%, 15% 20%, 25% and 30% while the reaction time (60 min), reaction temperature (700C) and 1.0%NaOH catalyst dosage were kept constant. The result indicated that maximum biodiesel yield (96.09%) was obtained at 20%of ethanol/coconut oil vol./vol.% ratio within transesterification reactions that were kept constant. The fuel characterizationsuch as viscosity (4.32mm2/s), specific gravity (0.887), pour point (-180C), cloud point (-120C) and flash point (1600C) of theproduced biodiesel at the optimized conditioned showed that the suitability of coconut ethyl ester (biodiesel) were within theinternational biodiesel standard.

scholarly journals Optimization of Ultrasonic-Assisted Extraction, Characterization, and Antioxidant Activities of Polysaccharides From Sojae Semen Praeparatum

2021 ◽  
Vol 16 (5) ◽  
pp. 1934578X2110206
Author(s):  
Yongshuai Jing ◽  
Ruijuan Zhang ◽  
Lan Li ◽  
Danshen Zhang ◽  
Yu Liu ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Deae Cellulose ◽  
Chemical Compositions ◽  
Hydroxyl Groups ◽  
Ultrasonic Frequency ◽  
Ultrasonic Power ◽  
Assisted Extraction ◽  
Ultrasonic Time ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Extraction

In this study, response surface methodology (RSM) was used to optimize the ultrasonic-assisted extraction parameters of Sojae Semen Praeparatum polysaccharides (SSPP-80), the optimum conditions were determined as follows: ultrasonic frequency of 100 W, ultrasonic power of 80 Hz, ultrasonic temperature of 52℃, ultrasonic time of 23 minutes, and liquid to raw material ratio of 40 mL/g. Based on these conditions, polysaccharides extraction rate was 7.72% ± 0.26%. Then, 2 novel polysaccharides (SSPP-80‐1, SSPP-80‐2) were isolated from SSPP by DEAE-cellulose 52 chromatography. The chemical compositions, physicochemical properties, and structure of SSPPs were investigated by simultaneous thermal analyzer (TGA), scanning electron microscopy (SEM), fourier transform infrared spectroscopy (FI-IR), and high-performance liquid chromatography (HPLC). The results showed that SSPP-80 and 2 fractions were mainly composed of mannose (Man), glucose (Glc), galactose (Gal), xylose (Xyl), and arabinose (Ara). In addition, the antioxidant activities were evaluated against the DPPH and hydroxyl radical in vitro, the IC50 of SSPP-80, SSPP-80‐1 and SSPP-80‐2 against DPPH free radical were 4.407, 8.267, and 5.204 mg/mL, respectively, whereas the IC50values for removing hydroxyl groups were 5.318, 3.516, and 4.016 mg/mL, respectively. It demonstrated that SSPP-80 and 2 fractions had certain antioxidant activity. Theoretical basis for use of Sojae Semen Praeparatum polysaccharides was provided by this study.

scholarly journals Process optimization for biodiesel production from neutralized waste cooking oil and the effect of this biodiesel on engine performance

2018 ◽  
Vol 8 (1) ◽  
pp. 121-127 ◽  
Author(s):  
Tanzer Eryilmaz
Keyword(s):  
Reaction Time ◽  
Methyl Ester ◽  
Reaction Temperature ◽  
Direct Injection ◽  
Engine Performance ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Phase Reaction ◽  
Optimum Conditions ◽  
Cooking Oils

In this study, the methyl ester production process from neutralized waste cooking oils is optimized by using alkali-catalyzed (KOH) single-phase reaction. The optimization process is performed depending on the parameters, such as catalyst concentration, methanol/oil ratio, reaction temperature and reaction time. The optimum methyl ester conversion efficiency was 90.1% at the optimum conditions of 0.7 wt% of potassium hydroxide, 25 wt% methanol/oil ratio, 90 min reaction time and 60°C reaction temperature. After the fuel characteristics of the methyl ester obtained under optimum conditions were determined, the effect on engine performance, CO and NOx emissions of methyl ester was investigated in a diesel engine with a single cylinder and direct injection. When compared to diesel fuel, engine power and torque decreased when using methyl ester, and specific fuel consumption increased. NOx emission increases at a rate of 18.4% on average through use of methyl ester.

Characterization and Application Process Optimization of CuO/γ-Al2O3 Catalyst in CWAO Technology

2014 ◽  
Vol 1008-1009 ◽  
pp. 338-341
Author(s):  
Yu Xiu Zhang ◽  
Cheng Zhi Wang ◽  
Yong Li Zhang ◽  
Zhang Wei Li
Keyword(s):  
Reaction Time ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Reaction Temperature ◽  
Removal Rate ◽  
Influence Factors ◽  
Carrier Distribution ◽  
Influent Water ◽  
Catalyst Dosage ◽  
Stirring Intensity

CuO/γ-Al2O3 catalyst was used to deal with the waste leachate in CWAO technology of, and the SEM and TEM characterization showed: active component in the surface of the carrier distribution is uniform; In CWAO process, six factors, based on the CODCr removal rate and turbidity removal rate, the biggest impact factor is reaction temperature, and the influence factors of the top three were reaction temperature, catalyst dosage and reaction time. The influence factors of those in the bottom three are influent water pH, oxygen partial pressure, stirring intensity, and three factors of influence on the strength is close. Optimizing operation process, in order: reaction temperature of 200 °C, catalyst dosage of 1.5 g, oxygen partial pressure of 2.0 MPa, stirring intensity 800 rpm, influent water pH of 7.0, the reaction time of 70 min.

Analysis on Factors Affecting Biodiesel Production Rate Based on Probability Theory

2013 ◽  
Vol 860-863 ◽  
pp. 1030-1034
Author(s):  
Yi Wei ◽  
Jing Zhang ◽  
Mu Zhang ◽  
Yin Dong Zhang
Keyword(s):  
Experimental Data ◽  
Probability Theory ◽  
Production Rate ◽  
Reaction Temperature ◽  
Correlation Coefficients ◽  
Biodiesel Production ◽  
Reaction Conditions ◽  
Factors Affecting ◽  
Orthogonal Experiments ◽  
Optimum Reaction

Biodiesel orthogonal experiments require large amount of experimental data collected and in order to save experimental time, referring to the correlation coefficients analysis in probability theory, the factors which affect the yield of biodiesel are analyzed. Under the same reaction temperature, the range order is as follows: the molar ration of alcohol to oil, the dosage of catalyst and reaction of time. At the same time, it provides theoretical guidance for obtaining optimum reaction conditions .

Hybrid Approach for Optimizing Process Parameters in Biodiesel Production from Palm Oil

2020 ◽  
Vol 834 ◽  
pp. 16-23
Author(s):  
Pongchanun Luangpaiboon ◽  
Pasura Aungkulanon
Keyword(s):  
Reaction Time ◽  
Process Parameters ◽  
Reaction Temperature ◽  
Palm Oil ◽  
Hybrid Approach ◽  
Maximum Yield ◽  
Biodiesel Production ◽  
Molar Ratio ◽  
Optimization Approach ◽  
Influential Parameters

Biodiesel was synthesized from direct transesterification of palm oil reacted with methanol in the presence of a suitable catalyst. There is a sequence of three consecutive reversible reactions for the transesterification process. These process parameters were optimized via the hybrid optimization approach of a conventional response surface method and artificial intelligence mechanisms from Sine Cosine and Thermal Exchange Optimization metaheuristics. The influential parameters and their combined interaction effects on the transesterification efficiency were established through a factorial designed experiments. In this study, the influential parameters being optimized to obtain the maximum yield of biodiesel were reaction temperature of 60–150°C, reaction time of 1–6 hours, methanol to oil molar ratio of 6:1–12:1 mol/mol and weight of catalyst of 1–10wt. %. On the first phase, the analysis of variance (ANOVA) revealed the reaction time as the most influential parameter on biodiesel production. Based on the experimental results from the hybrid algorithm via the SCO, it was concluded that the optimal biodiesel yield for the transesterification of palm oil were found to be 100°C for reaction temperature, 4 hours for reaction time, 10:1 wt/wt of ratio methanol to oil and 8% of weight of catalyst with 92.15% and 90.97% of biodiesel yield for expected and experimental values, respectively.

Preparation of Biodiesel from Soybean Oil by Ultrasound-Assisted Transesterification

2013 ◽  
Vol 773 ◽  
pp. 188-192 ◽  
Author(s):  
Yong Guang Bi ◽  
Hong Chang He
Keyword(s):  
Ionic Liquid ◽  
Reaction Time ◽  
Soybean Oil ◽  
Reaction Temperature ◽  
Ultrasonic Power ◽  
Ester Exchange ◽  
Ultrasound Assisted

Ultrasound-assisted ionic liquid ester exchange Preparation of biodiesel, effects of alcohol to oil ratio, reaction time, reaction temperature, the amount of ionic liquid and ultrasonic power factors on the rate of transesterification. The results showed that ultrasound-assisted ionic liquid soybean oil catalyzed preparation of biodiesel process: ultrasonic power 280W, alcohol-oil ratio of 10:1, 10% of the amount of catalyst is the quality of the raw oil, the reaction temperature of 100 ° C, reaction time 50min, biodiesel yield up to 92.5%.

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