Production optimization and quality assessment of biodiesel from waste vegetable oil

Refaat, Ahmed; Attia, N. K.; Sibak, H. A.; Sheltawy, S. T. El; Diwani, G. El

doi:10.1007/bf03325999

Cited by 181 publications

(91 citation statements)

References 19 publications

(31 reference statements)

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“…It can be stated that the yield of biodiesel increased up to a certain time of reaction. The similar thing stated by Refaat et al (2008) and Asri et al (2013).…”

Section: Effect Of Reaction Time On Yield Of Biodiesel In Transesterisupporting

confidence: 79%

Pre-Treatment of Waste Frying Oils for Biodiesel Production

Asri¹,

Sari²

2015

MAS

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Synthesis of biodiesel is a strategic step in overcoming energy scarcity and the environmental degradation caused by the continuous use of the petroleum based energy. Biodiesel as an alternative fuel for diesel engine is produced from renewable resources such as vegetable oils and animal fats. The main obstacle in the biodiesel production is the high price of the raw materials, resulting in the price of biodiesel is not competitive compared to the petroleum diesel. Therefore, the use of waste frying oils (WFO) is one way to reduce the cost of biodiesel production, because of its availability and low price. In the present work, WFO from California Fried chicken (CFC) restaurants in Surabaya were used as feed stock for the biodiesel production. The experiments were conducted using three steps of processes: pre-treatment of WFO, preparation of alumina based composite catalyst CaO/KI/γ-Al 2 O 3 and transesterification of treated WFO. WFO was treated by several types and various amounts of activated adsobents. The treated WFO was transesterified in three neck glass batch reactor with refluxed methanol using CaO/KI/γ-Al 2 O 3 . The results reveal that the best method for treating WFO is using 7.5% (wt. % to WFO) of coconut coir. Alumina based composite catalyst CaO/KI/γ-Al 2 O 3 was very promising for transesterification of WFO into biodiesel. The yield of biodiesel was 83% and obtained at 65ºC, 5 h of reaction time, 1:18 of molar ratio WFO to methanol and 6% amount of catalyst.

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“…It can be stated that the yield of biodiesel increased up to a certain time of reaction. The similar thing stated by Refaat et al (2008) and Asri et al (2013).…”

Section: Effect Of Reaction Time On Yield Of Biodiesel In Transesterisupporting

confidence: 79%

Pre-Treatment of Waste Frying Oils for Biodiesel Production

Asri¹,

Sari²

2015

MAS

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“…Diesel oil is a complex mixture of normal, branched and cyclic alkanes and aromatic compounds with the properties of low water solubility, high adsorption coefficient and high stability of the aromatic ring (Dean et al, 2002;Kanaly and Harayama, 2002;Kropp and Fedorak, 1998;Van et al, 2003). Therefore, diesel fuel has been considered as priority pollutants which exert bio-hazardous effects on both human and other living organisms in the environment (Kramer and Van 1990;Refaat et al, 2008;Richardson, 1996). Fortunately, this mixture represents an excellent substrate in the study of hydrocarbon biodegradation due to its composition (Bicca et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of a novel native Bacillus strain capable of degrading diesel fuel

Kebria

Ahmad

Ganjidoust

et al. 2009

Int. J. Environ. Sci. Technol.

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ABSTRACT:The ability of native bacteria to utilize diesel fuel as the sole carbon and energy source was investigated in this research. Ten bacterial strains were isolated from the oil refinery field in Tehran, Iran. Two biodegradation experiments were performed in low and high (500 and 10000 ppm, respectively) concentration of diesel fuel for 15 days. Only two isolates were able to efficiently degrade the petroleum hydrocarbons in the first test and degraded 86.67 % and, 80.60 % of diesel fuel, respectively. The secondary experiment was performed to investigate the toxicity effect of diesel fuel at high concentration (10000 ppm). Only one strain was capable to degrade 85.20 % of diesel fuel at the same time (15 days). Phenotype and phylogeny analysis of this strain was characterized and identified as dieseldegrading bacteria, based on gram staining, biochemical tests, 16S rRNA gene sequence analysis. These results indicate that this new strain was Bacillus sp. and could be considered as Bacillus Cereus with 98 % 16 S rRNA gene sequence similarity. The results indicate that native strains have great potential for in situ remediation of diesel-contaminated soils in oil refinery sites.

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“…From a primary screening (data not shown), KOH was selected as the best catalyst (Refaat et al 2008) and proceed to continue with it for the optimization process. Out of the 72 reactions, the highest initial yield results were of 76.99 % for C1, 95.58 % for C2 and 89.95 % for C3, and selected this biodiesel samples to test for quality parameters.…”

Section: Biodiesel Yieldmentioning

confidence: 99%

Biodiesel production from three mixes of oils with high free fatty content: quality evaluation and variable analysis

Ortíz

Quintero

Arévalo

2016

Int. J. Environ. Sci. Technol.

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Due to the excessive use of fossil fuels around the world, more environmentally friendly alternatives have been studied. Technologies for the production of ethanol, biogas and biodiesel are focusing on the importance of improving costs and efficiency. Biodiesel can be used in automotive internal combustion, is biodegradable and has no presence of metals, however, it lacks competitiveness versus petrodiesel mainly by the high cost of the pure oils used for its production. The aim of this study was to obtain biodiesel from oil samples with high content of free fatty acids ([1 %) obtained from three fast food restaurants using their molecular weight and acidity index values in order to neutralize the free fatty acids in a one-step reaction and perform a screening for optimal conditions for transesterification. The experimental design consisted of two reaction times (60 and 90 min); four methanoloil molar ratios-6:1, 10:1, 15:1 and 20:1; and two catalysts (NaOH and KOH) at three concentrations 0.5, 1 and 1.5 % with a constant temperature of 60°C and 500 rpm. The optimum conditions for the different waste cooking oil feedstocks were established reaching a final yield up to 85.53 % of biodiesel, concluding that there is viability of production through the use of this raw material and free fatty acids neutralization technique, obtaining a biofuel that meets international quality standards.

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Production optimization and quality assessment of biodiesel from waste vegetable oil

Cited by 181 publications

References 19 publications

Pre-Treatment of Waste Frying Oils for Biodiesel Production

Pre-Treatment of Waste Frying Oils for Biodiesel Production

Isolation and characterization of a novel native Bacillus strain capable of degrading diesel fuel

Biodiesel production from three mixes of oils with high free fatty content: quality evaluation and variable analysis

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