Biodiesel production from non-edible high acid value phoenix seed oil using a cheap immobilized lipase

2021 ◽  
Author(s):  
Xuejing Liu ◽  
Kaiyue Li ◽  
Shangde Sun
Keyword(s):  
Seed Oil ◽  
Immobilized Lipase ◽  
Acid Value ◽  
Biodiesel Production ◽  
High Acid

Study on the solid acid catalysts in biodiesel production from high acid value oil

2013 ◽  
Vol 19 (4) ◽  
pp. 1413-1419 ◽  
Author(s):  
Rizwan Sheikh ◽  
Moo-Seok Choi ◽  
Jun-Seop Im ◽  
Yeung-Ho Park
Keyword(s):  
Solid Acid ◽  
Acid Value ◽  
Biodiesel Production ◽  
Solid Acid Catalysts ◽  
Acid Catalysts ◽  
High Acid

scholarly journals A Robust Two-Step Process for the Efficient Conversion of Acidic Soybean Oil for Biodiesel Production

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 527 ◽  
Author(s):  
Gaojian Ma ◽  
Lingmei Dai ◽  
Dehua Liu ◽  
Wei Du
Keyword(s):  
Fatty Acid ◽  
Soybean Oil ◽  
Lower Cost ◽  
Immobilized Lipase ◽  
Acid Methyl Ester ◽  
Acid Value ◽  
Catalytic Performance ◽  
Raw Material ◽  
Biodiesel Production ◽  
Negative Effect

Acidic oil, which is easily obtained and with lower cost, is a potential raw material for biodiesel production. Apart from containing large quantity of FFAs (free fatty acids), acidic oil usually contains some amount of inorganic acid, glycerides and some other complex components, leading to complicated effect on lipase’s catalytic performance. Exploring the efficient process of converting acidic oil for biodiesel production is of great significance to promote the use of acidic oil. A two-step conversion process for acidic soybean oil was proposed in this paper, where sulfuric acid-mediated hydrolysis was adopted first, then the hydrolyzed free fatty acid, collected from the upper oil layer was further subject to the second-step esterification catalyzed by immobilized lipase Novozym435. Through this novel process, the negative effect caused by harmful impurities and by-product glycerol on lipase was eliminated. A fatty acid methyl ester (FAME) yield of 95% could be obtained with the acid value decreased to 4 mgKOH/g from 188 mgKOH/g. There was no obvious loss in lipase’s activity and a FAME yield of 90% could be maintained with the lipase being repeatedly used for 10 batches. This process was found to have a good applicability to different acidic oils, indicating it has great prospect for converting low quality oil sources for biodiesel preparation.

scholarly journals Influence of Physicochemical Characteristics of Neem Seeds (Azadirachta indica A. Juss) on Biodiesel Production

Biomolecules ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 616
Author(s):  
Bakari Hamadou ◽  
Djomdi ◽  
Ruben Zieba Falama ◽  
Cedric Delattre ◽  
Guillaume Pierre ◽  
...  
Keyword(s):  
Seed Oil ◽  
Fatty Acid Content ◽  
Calorific Value ◽  
Acid Value ◽  
Physicochemical Characteristics ◽  
Biodiesel Production ◽  
Major Drawback ◽  
Neem Seed Oil ◽  
The City

The aim of this work is to study the influence of the physicochemical characteristics of neem seeds, according to their mass and oil content, on the production of biodiesel. After the physical characterization of the seeds and extraction of the oil (triglycerides), biodiesel was produced from crude neem seed oil by transesterification with ethanol in the presence of sodium hydroxide. This study shows that the physicochemical characteristics of these seeds vary according to the origin of the samples. The seeds from Zidim, with a mass average of 200 seeds evaluated at 141.36 g and an almond content of 40.70%, have better characteristics compared to those collected in the city of Maroua, with average values evaluated at 128.00 g and 36.05%, respectively. Almonds have an average lipid content of 53.98 and 56.75% for the Maroua and Zidim samples, respectively. This study also reveals that neem oil, by its physicochemical characteristics, has a satisfactory quality for a valorization in the production of biodiesel. However, its relatively high free fatty acid content is a major drawback, which leads to a low yield of biodiesel, evaluated on average at 89.02%, and requires a desacidification operation to improve this yield. The analysis of biodiesel indicates physicochemical characteristics close and comparable to those of petrodiesel, particularly in terms of calorific value, density, kinematic viscosity, acid value, evaluated at 41.00 MJ/kg, 0.803, 4.42 cSt, and 0.130 mg/g, respectively.

H2SO4/CaO-Catalyzed Process for Biodiesel Production from High Acid Value Jatropha curcas Crude Oil

2011 ◽  
Vol 44 (7) ◽  
pp. 529-533 ◽  
Author(s):  
Yooko Tsuchiya ◽  
Yuichi Kaneki ◽  
Yukiyasu Yamakoshi
Keyword(s):  
Crude Oil ◽  
Jatropha Curcas ◽  
Acid Value ◽  
Biodiesel Production ◽  
High Acid

scholarly journals Effects of Different Extraction Solvents on Oil Extracted from Jatropha Seeds and the Potential of Seed Residues as a Heat Provider

2020 ◽  
Author(s):  
Yadessa Gonfa Keneni ◽  
Legesse Adane Bahiru ◽  
Jorge Mario Marchetti
Keyword(s):  
Seed Oil ◽  
Acid Value ◽  
Biodiesel Production ◽  
Seed Collection ◽  
Average Value ◽  
Jatropha Seeds ◽  
Jatropha Seed ◽  
Mixed Oil ◽  
Seed Collections

Abstract The present study focuses on the determination of oil contents of thirteen different jatropha seed collections from Ethiopia. The oil was extracted with a Soxhlet extractor using n-hexane which was selected out of four different solvents: diethyl ether, ethanol, n-heptane, and n-hexane. Cotton and thimble were used as filter for the extractions. Some properties of the oil of Chali seed collection and a sample of mixed oils (a mixture of equal volume of oils from thirteen different seed collections) were determined. The energy contents of selected de-oiled jatropha seed residues were also estimated. In the extraction with cotton and thimble, the largest percentage of oil yield was obtained from Dana seed (48.29%) and Chali seed (45.79) collections, respectively. The acid value (1.32 mg KOH/g) and percentage of free fatty acids (%FFA) (0.66%) of Chali seed oil were lower than the acid value (2.12 mg KOH/g) and %FFA (1.06%) of the mixed oil, and thus, the former oil is more suitable for alkaline-catalyzed biodiesel production. The iodine values of both Chali seed oil (116.02 g/100 g) and mixed oil (109.24 g/100 g) did not exceed the maximum standard for biodiesel according to the European EN 14214 specification, and the oils could be used for biodiesel production. The gross calorific values of de-oiled jatropha seed residues after oil extraction were found to range from 18.57 to 24.03 MJ/kg, and with the average value of 19.64 MJ/kg. Thus, the de-oiled seed residues can be used as the source of heat.

An Assessment of in vitro Antioxidant Potential of Camelina sativa L. Seed Oil and Estimation of Tocopherol Content using HPTLC Method

2021 ◽  
Vol 13 (2) ◽  
pp. 589-600
Author(s):  
R. Pathak ◽  
M. Mohsin ◽  
S. P. S Mehta
Keyword(s):  
Physicochemical Properties ◽  
Seed Oil ◽  
Acid Value ◽  
Tocopherol Content ◽  
Camelina Sativa ◽  
Biodiesel Production ◽  
Biofuel Production ◽  
Antioxidant Potential ◽  
Camelina Seed

The present study was aimed to analyze the physicochemical properties of Camelina sativa L. seed oil in order to identify its utilization as a primary feedstock for biofuel production. Efforts were also made to identify and quantify the amount of α- tocopherols in Camelina seed oil and evaluated in vitro antioxidant potential of Camelina sativa seed oil and were compared with α–tocopherol standard. Physicochemical properties such as oil yield content (36.66 %), less acid value (5.39 mg KOH/g) make it a prominent feedstock for biodiesel production.  Saponification value (182.66 mg KOH/g) also makes this oil useful in soap and cosmetic industries. To check in vitro antioxidant potential of Camelina seed oil H2O2, DPPH and ABTS were used as free radical inducers. Oil showed remarkable inhibition potential of trapping these free radicals. Tocopherol content was analyzed through HPTLC. Camelina sativa seed oil was found to contain 59.34 mg/100 g of tocopherol content. It is evident from this study that Camelina oil has high antioxidant potential and there is no need to add other antioxidant substances in the products formed by using Camelina sativa seed oil.

Biodiesel production direct from high acid value oil with a novel magnetic carbonaceous acid

2015 ◽  
Vol 155 ◽  
pp. 637-647 ◽  
Author(s):  
Fan Zhang ◽  
Zhen Fang ◽  
Yi-Tong Wang
Keyword(s):  
Acid Value ◽  
Biodiesel Production ◽  
High Acid

Biodiesel development from high acid value polanga seed oil and performance evaluation in a CI engine

Fuel ◽  
2007 ◽  
Vol 86 (3) ◽  
pp. 448-454 ◽  
Author(s):  
P.K. Sahoo ◽  
L.M. Das ◽  
M.K.G. Babu ◽  
S.N. Naik
Keyword(s):  
Performance Evaluation ◽  
Seed Oil ◽  
Acid Value ◽  
High Acid ◽  
Ci Engine ◽  
And Performance

scholarly journals Production of Biodiesel from High Acid Value Waste Cooking Oil Using an Optimized Lipase Enzyme/Acid-Catalyzed Hybrid Process

2009 ◽  
Vol 6 (s1) ◽  
pp. S485-S495 ◽  
Author(s):  
N. Saifuddin ◽  
A. Z. Raziah ◽  
H. Nor Farah
Keyword(s):  
Acid Value ◽  
Reaction Rates ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Hybrid Process ◽  
Initial Reaction ◽  
Cooking Oil ◽  
High Acid ◽  
Lipase Enzyme ◽  
Acid Catalyzed

The present study is aimed at developing an enzymatic/acid-catalyzed hybrid process for biodiesel production using waste cooking oil with high acid value (poor quality) as feedstock. Tuned enzyme was prepared using a rapid drying technique of microwave dehydration (time required around 15 minutes). Further enhancement was achieved by three phase partitioning (TPP) method. The results on the lipase enzyme which was subjected to pH tuning and TPP, indicated remarkable increase in the initial rate of transesterification by 3.8 times. Microwave irradiation was found to increase the initial reaction rates by further 1.6 times, hence giving a combined increase in activity of about 5.4 times. The optimized enzyme was used for hydrolysis and 88% of the oil taken initially was hydrolyzed by the lipase. The hydrolysate was further used in acid-catalyzed esterification for biodiesel production. By using a feedstock to methanol molar ratio of 1:15 and a sulphuric acid concentration of 2.5%, a biodiesel conversion of 88% was obtained at 50 °C for an hour reaction time. This hybrid process may open a way for biodiesel production using unrefined and used oil with high acid value as feedstock.

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