Biodiesel: Contaminants and Quality Control

Quadros, Daiane P. C. de; Chaves, Enaura Helena Brandão; Silva, Jessee S. A.; Teixeira, Leonardo Sena Gomes; Curtius, Adilson José; Pereira, Pedro A. P.

doi:10.5935/1984-6835.20110042

Cited by 5 publications

(2 citation statements)

References 45 publications

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“…Comparativamente, os óleos de origem vegetal são compostos majoritariamente por ácidos graxos insaturados. Assim, as distinções entre ambos são químicas e estão nos tipos e distribuições dos ácidos graxos combinados com o glicerol (Cunha, 2008;Díaz, 2012 A composição química e as propriedades da matéria--prima usada influenciam nas características do combustível obtido, como, por exemplo, a densidade, o número de cetanos e o teor de enxofre (Teixeira et al, 2010;De Quadros et al, 2011). Dessa forma, o perfil de ácidos graxos do sebo influi diretamente as características de seu biodiesel, tanto em relação às vantagens de sua utilização quanto às limitações e/ou restrições de seu uso (vide seção 5.2.3).…”

Section: Composição Químicaunclassified

Vantagens E Limitações Do Sebo Bovino Enquanto Matéria-Prima Para a Indústria Brasileira De Biodiesel

Varão

Silva

Zamora

et al. 2017

HOLOS

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RESUMORecentemente, a escassez global dos combustíveis fosseis, além de questões políticas, econômicas e ambientais impulsionaram a busca por combustíveis oriundos de fontes renováveis. Neste contexto, o biodiesel surge como um promissor combustível sucedâneo ao diesel mineral, seja parcial ou totalmente. O Brasil é o segundo maior produtor e consumidor mundial de biodiesel, sendo que o sebo bovino é o segundo insumo mais utilizado para a produção deste biocombustível no país, atrás apenas da soja. Diante disso, este artigo de revisão bibliográfica aborda as principais vantagens e limitações relacionadas ao uso desta matéria--prima para obtenção de biodiesel no Brasil, destacando fatores econômicos e ambientais, suas características físico--químicas, além de aspetos relativos à sua cadeia produtiva. PALAVRAS--CHAVE:Vantagens, Limitações, Sebo bovino, Biodiesel. ADVANTAGES AND LIMITATIONS OF BEEF TALLOW AS FEEDSTOCK FOR BRAZILIAN BIODIESEL INDUSTRY ABSTRACTRecently, the global shortage of fossil fuels, as well as political, economic and environmental issues, have boosted the search for fuels obtained from renewable sources. In this context, biodiesel emerges as a promising substitute fuel for mineral diesel, either partially or totally. Brazil is the second largest biodiesel producer and consumer in the world and beef tallow is the second most used feedstock to produce this biofuel in the country, after soybean. Thus, this review deals with the main advantages and limitations related to beef tallow use as source for biodiesel production in Brazil. It is emphasized beef tallow economical and environmental factors, its physical and chemical properties, as well as aspects concerning its production chain.

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Section: Composição Químicaunclassified

Vantagens E Limitações Do Sebo Bovino Enquanto Matéria-Prima Para a Indústria Brasileira De Biodiesel

Varão

Silva

Zamora

et al. 2017

HOLOS

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“…Biodiesel, mainly produced using basic liquid catalysts (KOH or NaOH) for triglycerides transesterification is one of the main biofuels used in the world, which can be mixed with petroleum diesel to form an alternative automobile fuel .…”

Section: Introductionmentioning

confidence: 99%

Stainless Steel Electrodes to Determine Biodiesel Content in Petroleum Diesel Fuel by Electrochemical Impedance Spectroscopy

et al. 2016

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1IntroductionBiodiesel, mainly producedu sing basic liquid catalysts (KOH or NaOH)f or triglyceridest ransesterification [1,2] is one of the main biofuels used in the world, which can be mixed with petroleum diesel to form an alternative automobile fuel [3][4][5].Due to the biodiesel being one of the renewable fuels, the first reasonb ehindt he biofuels program is to reduce oil dependencyand increase the use of renewable,besides the warranty of increasing of energys ecurity.Biodiesel can be used in its pure form (B100) [6][7][8][9] or in many differentc oncentrations [10][11][12],b eing the most common, B20 (20 %b iodiesel, 80 %p etroleum diesel), B5 (5 %b iodiesel, 95% petroleum diesel) and B2 (2 % biodiesel, 98 %p etroleum diesel) [13].B 20 and lowerlevel blends usually do not require enginem odifications [14][15].B esides the positive environmental aspects, the presence of biodiesel in the blendsw ith diesel, could act as alubricity additive [12,13,16,17].Several alternativem ethodsf or quantitative determination of biodiesel contenti nd iesel-biodiesel blends have been reported in literature [18][19][20][21][22][23][24][25][26][27][28][29][30],s uch as x-ray spectroscopy [18],l iquid and gas chromatography [19][20][21], near infrared spectroscopy [22,23],f ouriert ransform mid-infrared spectroscopy (FT-IR) [25,26],u ltraviolet absorptions pectroscopy [27],f luorescence spectroscopy [30],a sw ell as electrochemical impedance spectroscopy (EIS) [31][32][33].Although some of these methodsare effective,m ajor drawbacks have been observed in the analysis.Theu se of electroanalyticalm ethods [34][35],i ncluding the method EIS [36-37]h as been as ubject of great interest in the last decade in many areas. Them ethod EIS, which uses the dielectric properties to measure the content of biodiesel, seems to be quite promising.Actually,t he application of EIS to study low conductivity media such as oil products,e thanol,a nd biodiesel have been reported in literature [10,11,37,38,39,40],a nd the high ohmic drop seemed to be not ac oncern [41,42]. One of the EIS advantages for biodiesel content measurements is its efficiency being able to obtain, in as ingle experiment, all informationa bout the solution, the interface and the electrodes urface,t hrough the measured parameters, such as resistance,c apacitance,a nd inductance, Abstract:T he blending ratio of biodiesel in petroleum diesel has become one of the most important parameters to ensuret he quality of diesel/biodieselb lend. This paper presents af ast and simple method based on electrochemical impedance spectroscopy to determinet he biodiesel contenti nd ieself uel. Differentf rom the methodr eported in the literature, using ap air of two identicals creen printed carbon pastee lectrodes,i nt he present work we used two electrodes made from 304 stainless steel with dimensions of 0.8 0.3 cm for the EIS measurements.I mproved results were obtained in terms of sensitivity,s tability of measurements,e lectrode reuse,a nd cost. In this procedure the charge transfer resista...

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A simple electroanalytical procedure for the determination of calcium in biodiesel

Almeida

Dornellas

Yotsumoto-Neto

et al. 2014

Fuel

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Biodiesel: Contaminants and Quality Control

Cited by 5 publications

References 45 publications

Vantagens E Limitações Do Sebo Bovino Enquanto Matéria-Prima Para a Indústria Brasileira De Biodiesel

Vantagens E Limitações Do Sebo Bovino Enquanto Matéria-Prima Para a Indústria Brasileira De Biodiesel

Stainless Steel Electrodes to Determine Biodiesel Content in Petroleum Diesel Fuel by Electrochemical Impedance Spectroscopy

A simple electroanalytical procedure for the determination of calcium in biodiesel

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