Preparation of biodiesel with the help of ultrasonic and hydrodynamic cavitation

Ji, Jianbing; Wang, Jianli; Li, Yongchao; Yu, Yunliang; Xu, Zhichao

doi:10.1016/j.ultras.2006.05.020

Cited by 332 publications

(146 citation statements)

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“…Thus, the use of hydrodynamic cavitation is effective both in enhancing the rate of reaction as well as in shifting the equilibrium for resulting a higher product yields. Hydrodynamic generated cavitation results in conditions of intense turbulence and micro-scale liquid circulation currents which help in uniform mixing at micro-level and hence in the elimination of the mass transfer resistances [14]. The phenomena reaction under hydrodynamic cavitation can be explained as follows; formation of cavitation bubbles could be stimulated by hydrodynamic of fluid flow with sufficient energy.…”

Section: Resultsmentioning

confidence: 99%

“…Considering these limitations, currently, there is a strong quest to develop an efficient, time-saving, economically functional and environmental friendly biodiesel production process at laboratory and industrial scale having superiority over the classical procedure. Keeping this aspect into consideration, some of the recently developed biodiesel production technologies are power ultrasound [12][13][14][15][16], hydrodynamic cavitation [12][13][14] and supercritical methanol processes [17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The cavitating conditions identical to acoustic cavitation could be generated in hydrodynamic cavitation, which even had a better effect on mixing immiscible liquids [14]. Furthermore, scale-up of hydrodynamic cavitation to meet industrial-scale operations had better opportunities than the ultrasonic reactor by reason of its easier generating and less sensitivity to the geometric details of the reactor.…”

Section: Introductionmentioning

confidence: 99%

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Biodiesel Production From Waste Cooking Oil Using Hydrodinamic Cavitation

Supardan

Satriana

Mahlinda

2013

MST

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The aim of this research was to study biodiesel production from low cost feedstock of waste cooking oil (WCO) using hydrodynamic cavitation apparatus. A two-step processes esterification process and transesterification process using hydrodynamic cavitation for the production of biodiesel from WCO is presented. The first step is acid-catalyzed esterification process for reducing free fatty acid (FFA) content of WCO and followed by base-catalyzed transesterification process for converting WCO to biodiesel as the second step. The result of esterification process with methanol to oil molar ratio of 5 and temperature of 60 o C showed that the initial acid value of WCO of 3.9 mg KOH/g can be decreased to 1.81 mg KOH/g in 120 minutes. The highest yield of biodiesel in transesterification process of 89.4% obtained at reaction time of 150 minutes with methanol to oil molar ratio of 6. The biodiesel produced in the experiment was analyzed by gas chromatography-mass spectrometry (GC-MS), which showed that it mainly contained five fatty acid methyl esters. In addition, the properties of biodiesel showed that all of the fuel properties met the Indonesian National Standard (INS) No. 04-7182-2006 for biodiesel. AbstrakProduksi Biodiesel dari Minyak Goreng Bekas Menggunakan Kavitasi Hidrodinamik. Penelitian ini bertujuan untuk mempelajari proses produksi biodiesel dari minyak goreng bekas menggunakan peralatan kavitasi hidrodinamik. Proses produksi biodiesel dilakukan dalam 2 (dua) tahap. Tahap pertama adalah proses esterifikasi menggunakan katalis asam yang bertujuan untuk menurunkan kandungan asam lemak bebas dalam minyak goreng bekas. Pada tahap kedua dilakukan proses transesterifikasi menggunakan katalis basa untuk mengkonversi minyak menjadi biodiesel. Hasil penelitian proses esterifikasi dengan perbandingan molar metanol terhadap minyak 5:1 dan temperatur 60 o C menunjukkan bilangan asam awal minyak goreng bekas sebesar 3,9 mg KOH/g dapat diturunkan menjadi 1,81 mg KOH/g dalam waktu 120 menit. Pada proses transesterifikasi, rendemen biodiesel tertinggi sebesar 89,4% diperoleh pada waktu reaksi 150 menit dengan rasio molar metanol terhadap minyak 6:1. Analisis komponen biodiesel menggunakan kromatografi gas-spektrometer massa (GC-MS) menunjukkan biodiesel terdiri dari 5 (lima) metil ester asam lemak dominan yaitu metil oleat, metil palmitat, metil linoleat, metil stearat dan metil miristat. Selain itu, beberapa parameter biodiesel yang diuji telah memenuhi persyaratan SNI No. 04-7182-2006.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biodiesel Production From Waste Cooking Oil Using Hydrodinamic Cavitation

Supardan

Satriana

Mahlinda

2013

MST

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“…[1][2][3] Because of the recent escalating production and the utilization of biodiesel worldwide, large quantities of glycerol have been produced. 4,5 The rich availability makes it an important raw material for the manufacture of some valuable chemicals (diols, epoxides, esters, ethers, etc.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenolysis of 2-tosyloxy-1,3-propanediol into 1,3-propanediol over Raney Ni catalyst

Zheng¹,

Wang²,

Zhang³

et al. 2013

J. Braz. Chem. Soc.

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2-Tosiloxi-1,3-propanodiol (TPD), um potencial precursor para produção de 1,3-propanodiol (1,3-PD), é produzido através da tosilação do glicerol com a ajuda de uma técnica de proteção de grupos. Neste trabalho, discutiu-se a hidrogenólise do TPD em 1,3-PD sobre catalisador de Raney Ni através de diferentes parâmetros de reação para otimizar as condições de reação para formação seletiva do 1,3-PD. O mecanismo de hidrogenólise do TPD e reações laterais também foram confirmados pela técnica de cromatografia em fase gasosa acoplada à espectrometria de massas (GC-MS).2-Tosyloxy-1,3-propanediol (TPD), a potential precursor for 1,3-propanediol (1,3-PD) production, is produced by the tosylation of glycerol with the help of protecting group techniques. In this work, the hydrogenolysis of TPD into 1,3-PD over Raney Ni catalyst is discussed at different reaction parameters to optimize the reaction conditions for selective formation of 1,3-PD. The mechanisms of the hydrogenolysis of TPD and the side reactions were also confirmed by gas chromatography-mass spectrometry (GC-MS) technique.

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“…There are reports on use of ultrasonic technology to improve the mass transfer between the two immiscible liquids in a heterogeneous system on a laboratory scale (40,41).…”

mentioning

confidence: 99%

Recent Trends in Biodiesel and Biogas Production

Bušić

Kundas

Morzak

et al. 2018

Food Technol. Biotechnol.

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SummaryBiodiesel and biogas are two very important sources of renewable energy worldwide, and particularly in EU countries. While biodiesel is almost exclusively used as transportation fuel, biogas is mostly used for production of electricity and heat. The application of more sophisticated purification techniques in production of pure biomethane from biogas allows its delivery to natural gas grid and its subsequent use as transportation fuel. While biogas is produced mostly from waste materials (landfills, manure, sludge from wastewater treatment, agricultural waste), biodiesel in EU is mostly produced from rapeseed or other oil crops that are used as food. This raises the 'food or fuel' concerns. To mitigate this problem considerable efforts have been done to use non-food feedstock for biodiesel production. These include all kinds of waste oils and fats, but recently more attention has been devoted to production of microbial oils by cultivation of microorganisms that are able to accumulate high amounts of lipids in their biomass. Promising candidates for microbial lipids production can be found www.ftb.com.hrPlease note that this is an unedited version of the manuscript that has been accepted for publication. This version will undergo copyediting and typesetting before its final form for publication. We are providing this version as a service to our readers. The published version will differ from this one as a result of linguistic and technical corrections and layout editing.2 among different strains of filamentous fungi, yeast, bacteria and microalgae. Feedstocks of interest are agricultural waste rich in carbohydrates as well as different lignocellulosic raw materials where some technical issues have to be resolved. In this work, recovery and purification of biodiesel and biogas were also considered.

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Preparation of biodiesel with the help of ultrasonic and hydrodynamic cavitation

Cited by 332 publications

References 11 publications

Biodiesel Production From Waste Cooking Oil Using Hydrodinamic Cavitation

Biodiesel Production From Waste Cooking Oil Using Hydrodinamic Cavitation

Hydrogenolysis of 2-tosyloxy-1,3-propanediol into 1,3-propanediol over Raney Ni catalyst

Recent Trends in Biodiesel and Biogas Production

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