Cogeneration of biodiesel and nontoxic rapeseed meal from rapeseed through in-situ alkaline transesterification

Qian, Junfeng; Yang, Qiuhui; Sun, Fei; He, Mingyang; Chen, Qun; Liu, Yang; Qin, Lizhen

doi:10.1016/j.biortech.2012.10.017

Cited by 32 publications

(25 citation statements)

References 21 publications

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“…The drying kinetics were obtained according to the previously reported method (Chen et al, 2013) at four temperatures (60°C, 70°C, 80°C and 90°C), using a thermogravimetric analyser (NETZSCH, model STA 449 F3) and nitrogen as a carrier gas, flowing at 20 mL/min. In order to check if the mass and heat transfers inside the sample are negligible, the experiments were performed using various initial sample masses ranging from 10 mg to 25 mg (Yang et al, 2004) and no significant changes in drying kinetics were observed.…”

Section: Drying Kineticsmentioning

confidence: 99%

“…On the contrary to the traditional method comprising of oil extraction, solvent evaporation and chemical conversion of oils to biodiesel, in situ transesterification offer a one pot operation where extraction and transesterification occur simultaneously. Several studies have employed this method for various kinds of biomass such as algae (Kim et al, 2015, Haas andWagner, 2011), rapeseed (Qian et al, 2013), Jatropha (Kasim and Harvey, 2011), spent coffee grounds (Park et al, 2006;Najdanovic-Visak et al, 2017), soy flakes (Haas et al, 2004), etc.…”

Section: Introductionmentioning

confidence: 99%

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Brewers' spent grains: Drying kinetics and biodiesel production

Mallen

Najdanovic‐Visak

2018

Bioresource Technology Reports

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Enormous amounts of brewers' spent grains (BSGs) per year are generated to produce bear worldwide. BSGs can be used as a carbon source, biofuel to generate energy and as a source of biogas. Typically, BSGs contain more than 60 mass% of water and, therefore, drying kinetics is a paramount for the development of any of these valorisation processes.In this work, we reveal the main parameters and mechanism of drying kinetics of BSGs at isothermal conditions (60 o C-90 o C), measured by thermogravimetric analysis. Diffusion coefficients ranged from 1.4210 -9 m 2 s -1 to 2.6710 -9 m 2 s -1 while the activation energy was 26.6 kJmol -1 . Furthermore, for the first time, biodiesel production from BSGs is reported. We employed acid catalysed in situ transesterification process, at different catalyst concentrations, methanol to BSGs ratios, reaction time and temperature.The outcomes of our study show promise for alternative valorisation of brewers' spent grains, an abundant waste spread around the world.

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Section: Drying Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Brewers' spent grains: Drying kinetics and biodiesel production

Mallen

Najdanovic‐Visak

2018

Bioresource Technology Reports

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“…Vale apena ressaltar que as reações de transesterificação tiveram como parâmetro fixo:40 ml de matéria-prima (óleo residual de soja), agitação magnética contínua 30 rpm, e duração de 60 minutos Qian et al, 2013. Por outro lado, variou-se a temperatura, razão molar álcool / óleo e percentual de catalisador.Na Tabela 2 Após o tempo de síntese, transferiu-se a mistura remanescente para um funil de separação, deixando-a repousar por 40 minutos em temperatura ambiente para que ocorresse a decantação (Ma e Hanna, 1999). As reações de transesterificação evidenciaram duas fases líquidas ao final do processo de decantação, sendo que a fase superior corresponde aos ésteres metílicos e a inferior, o glicerol e resíduos gerados no processo (Fadhil,et al, 2012).…”

Section: Planejamento Experimentalunclassified

“…Na maioria dos diferentes métodos de produção do biodiesel, as matérias-primas constituem entre 70-85% do custo produtivo (Kansedoet al, 2009). Em vista disto, um elevado custo de produção torna tais combustíveis incapazes de competir com o combustível derivado do petróleo (Qian et al,2013).…”

Section: Introductionunclassified

Efeitos Das Condições Reacionais De Transesterificação Alcalina a Partir De Óleos Residuais

et al. 2015

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A produção de biodiesel tem um elevado custo devido ao alto preço da principal matéria-prima (óleo de soja) utilizada na síntese. Dessa maneira, tornam-se viável a utilização de matérias-primas não comestíveis, como os óleos residuais de frituras. O presente trabalho teve como objetivo estudar a influência das variáveis: temperatura, massa de catalisador e razão molar álcool/óleo através de um planejamento fatorial o processo de produção de biodiesel a partir de óleos residuais. Para isso, levou-se em consideração a conversão dos triglicerídeos em ésteres metílicos de acordo com os substratos gerados, bem como a concentração do produto final visando a otimização da síntese experimental. Notou-se que dentre os parâmetros estudados, a massa do catalisador teve a maior interferência significativa, considerando-se o volume final da mistura de ésteres produzida, seguida das variáveis razão molar (álcool / óleo) e temperatura.

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“…The vegetable oil or triglycerides (TGs) of fatty acids, on transesterification with short chain alcohol (C1-C3), produces fatty acid alkyl esters which are otherwise known as biodiesel (Khayoon et al 2012;Zhang et al 2010). Biodiesels produced through transesterification of vegetable oils with methanol (C1) are referred to as fatty acid methyl esters (FAME) (Zakaria and Harvey 2012;Qian et al 2013).…”

Section: Introductionmentioning

confidence: 99%

A study on production of biodiesel using a novel solid oxide catalyst derived from waste

Majhi

Ray

2015

Environ Sci Pollut Res

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The issues of energy security, dwindling supply and inflating price of fossil fuel have shifted the global focus towards fuel of renewable origin. Biodiesel, having renewable origin, has exhibited great potential as substitute for fossil fuels. The most common route of biodiesel production is through transesterification of vegetable oil in presence of homogeneous acid or base or solid oxide catalyst. But, the economics of biodiesel is not competitive with respect to fossil fuel due to high cost of production. The vegetable oil waste is a potential alternative for biodiesel production, particularly when disposal of used vegetable oil has been restricted in several countries. The present study evaluates the efficacy of a low-cost solid oxide catalyst derived from eggshell (a food waste) in transesterification of vegetable oil and simulated waste vegetable oil (SWVO). The impact of thermal treatment of vegetable oil (to simulate frying operation) on transesterification using eggshell-derived solid oxide catalyst (ESSO catalyst) was also evaluated along with the effect of varying reaction parameters. The study reported that around 90 % biodiesel yield was obtained with vegetable oil at methanol/oil molar ratio of 18:1 in 3 h reaction time using 10 % ESSO catalyst. The biodiesel produced with ESSO catalyst from SWVO, thermally treated at 150 °C for 24 h, was found to conform with the biodiesel standard, but the yield was 5 % lower compared to that of the untreated oil. The utilization of waste vegetable oil along with waste eggshell as catalyst is significant for improving the overall economics of the biodiesel in the current market. The utilization of waste for societal benefit with the essence of sustainable development is the novelty of this work.

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Cogeneration of biodiesel and nontoxic rapeseed meal from rapeseed through in-situ alkaline transesterification

Cited by 32 publications

References 21 publications

Brewers' spent grains: Drying kinetics and biodiesel production

Brewers' spent grains: Drying kinetics and biodiesel production

Efeitos Das Condições Reacionais De Transesterificação Alcalina a Partir De Óleos Residuais

A study on production of biodiesel using a novel solid oxide catalyst derived from waste

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