Optimization of microwave-assisted transesterification of dry algal biomass using response surface methodology

Patil, Prafulla D.; Gude, Veera Gnaneswar; Mannarswamy, Aravind; Cooke, Peter; Munson-McGee, Stuart H.; Nirmalakhandan, Nagamany; Lammers, Peter J.; Deng, Shuguang

doi:10.1016/j.biortech.2010.09.046

Cited by 183 publications

(78 citation statements)

References 35 publications

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“…In microwave-assisted extraction and transesterification, microwaves transfer energy into the algae-solvent mixture through dipolar polarization, ionic conduction, and interfacial polarization mechanisms. Heat and pressure will be produced within the mixture, which will force out the lipids from the biological matrix in a shorter amount of time (Patil et al, 2011a). On the other hand, ultrasound induces intense mixing due to the continuous compression and rarefaction cycles, which cause cavitational bubbles (Martinez-Guerra et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Biodiesel from Three Microalgae Transesterification Processes using Different Homogenous Catalysts

Cercado¹,

Ballesteros²,

Capareda³

2018

IJTech

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Biodiesel was produced using three different alkali catalysts, namely KOH, NaOH and LiOH. The aim of the study was to determine which of these is the most effective as far as Fatty Acid Methyl Ester (FAME) yield is concerned in producing biodiesel from microalgae. Three different transesterification processes were considered; conventional, microwave-assisted and ultrasound-assisted. The study was able to show that NaOH and KOH generated far better FAME values compared to LiOH in all three transesterification processes. The introduction of microwave or ultrasound in the transesterification slightly increased the FAME yield by 5% and cut the reaction time by 50%. The best FAME yield was attained when the optimum process parameters were a methanol to oil ratio of 12:1; a catalyst load of 2% for NaOH and 3% for KOH; a reaction time of 12 minutes; and a microwave output power rate of 600 watts.

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Section: Introductionmentioning

confidence: 99%

Biodiesel from Three Microalgae Transesterification Processes using Different Homogenous Catalysts

Cercado¹,

Ballesteros²,

Capareda³

2018

IJTech

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“…During trans-esterification process, the fatty acid /glyceride is reacted with alcohol in the presence of a catalyst, usually a very strong alkaline such as potassium hydroxide or sodium hydroxide [5,6]. Alcohol reacts with the fatty material in the presence of a catalyst to form biodiesel or mono-alkyl ester and glycerol.…”

Section: Introductionmentioning

confidence: 99%

Biodiesel production from waste vegetable oil (Sunflower) obtained from fried chicken and plantain

Udehab¹

2017

J Pet Environ Biotechnol

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Waste sunflower oil sourced from fried chicken and plantain was used for biodiesel production in this study. During the transesterification process, 161 ml of ethanol containing 96% (v/v) was added to 250 ml of waste sunflower oil using NaOH as the catalyst at different concentrations (2.0% to 4.0%) and temperatures (45°C, 60°C, 70°C and 85°C). Biodiesel yield of 88.6% was obtained at the temperature of 70°C in 3.0% NaOH. Viscosity test at room temperature and specific gravity evaluation recorded 2.81 cm 2 s -1 and 0.912 Kg/m 3 respectively. The high energy density obtained from waste sunflower biodiesel blend is comparable with the hydrocarbon-based fossil fuel, an indication for smooth engine runs. This means that waste sunflower oil could be a veritable material for energy production as the alternative to greenhouse issues of fossil fuel diesel blend.

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“…However, in the international market, the most technically feasible and commercialized alternative renewable fuel sources are biodiesel and bioethanol [7]. Several researchers found that oil from microalgae could be converted to biodiesel, by using supercritical and microwave methods [8], ultrasound methods [9,10], and direct transesterification (in situ) [11].The last method is one of the most promising technologies due to the simple process and lower energy consumption to produce biodiesel from microalgae [8,12,13]. By using In situ transesterification, energy consumption could be lowered due to bypassing lipid extraction.…”

Section: Biomass Conversionmentioning

confidence: 99%

Utilization of Agroindustry Wastewater as Growth Medium for Microalgae based Bioenergy Feedstock in Indonesia (an Overview)

Nur¹,

Hadiyanto²

2013

J-Sustain

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Indonesia has been well-known as an agricultural country for a long time. Several leading agroindustry products are increasing due to demand from world consumption. On other hand, wastewater production has increased in parallel with agroindustry production. It is predicted that wastewater will threaten the environment due to high COD and BOD content. A second problem in Indonesia is the energy crisis, due to petroleum depletion, and energy demand increase. A feasible technology is needed to solve both these problems. Almost all agroindustry wastewater contains nitrogen, phosphorus, and several micronutrients. It is seen as a potential medium for microalgae growth. Due to the tropical climate, light, and other factors, it is predicted that microalgae cultivated in agroindustry wastewater could be a potential biomass for bioenergy feedstock and a good phytoremediator to lower toxic matter in wastewater.

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Optimization of microwave-assisted transesterification of dry algal biomass using response surface methodology

Cited by 183 publications

References 35 publications

Biodiesel from Three Microalgae Transesterification Processes using Different Homogenous Catalysts

Biodiesel from Three Microalgae Transesterification Processes using Different Homogenous Catalysts

Biodiesel production from waste vegetable oil (Sunflower) obtained from fried chicken and plantain

Utilization of Agroindustry Wastewater as Growth Medium for Microalgae based Bioenergy Feedstock in Indonesia (an Overview)

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