Biodiesel: Source, Production, Composition, Properties and Its Benefits

Bajpai, Divya; Tyagi, V. K.

doi:10.5650/jos.55.487

Cited by 251 publications

(143 citation statements)

References 31 publications

(26 reference statements)

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“…(13) Biodiesel consisted of longchained alkyl esters derived from vegetable oil and animal fat. This B-100 consists of methyl soyate and rapeseed methyl ester (CAS numbers: 67784-80-9 and 73891-99-3) that was used as a substitute for diesel oil because it contained no PACs.…”

Section: Methodsmentioning

confidence: 99%

Personal Breathing Zone Exposures among Hot-Mix Asphalt Paving Workers; Preliminary Analysis for Trends and Analysis of Work Practices That Resulted in the Highest Exposure Concentrations

Osborn¹,

Snawder

Kriech³

et al. 2013

Journal of Occupational and Environmental Hygiene

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An exposure assessment of hot-mix asphalt (HMA) paving workers was conducted to determine which of four exposure scenarios impacted worker exposure and dose. Goals of this report are to present the personal-breathing zone (PBZ) data, discuss the impact of substituting the releasing/ cleaning agent, and discuss work practices that resulted in the highest exposure concentration for each analyte.One-hundred-seven PBZ samples were collected from HMA paving workers on days when diesel oil was used as a releasing/cleaning agent. An additional 36 PBZ samples were collected on days when B-100 (100% biodiesel, containing no petroleum-derived products) was used as a substitute releasing/cleaning agent. Twenty-four PBZ samples were collected from a reference group of concrete workers, who also worked in outdoor construction but had no exposure to asphalt emissions. Background and field blank samples were also collected daily. Total particulates and the benzene soluble fraction were determined gravimetrically. Total organic matter was determined using gas chromatography (GC) with flame ionization detection and provided qualitative information about other exposure sources contributing to worker exposure besides Author Manuscript Author ManuscriptAuthor ManuscriptAuthor Manuscript asphalt emissions. Thirty-three individual polycyclic aromatic compounds (PACs) were determined using GC with time-offlight mass spectrometry; results were presented as either the concentration of an individual PAC or a summation of the individual PACs containing either 2-to 3-rings or 4-to 6-rings. Samples were also screened for PACs containing 4-to 6-rings using fluorescence spectroscopy.Arithmetic means, medians, and box plots of the PBZ data were used to evaluate trends in the data. Box plots illustrating the diesel oil results were more variable than the B-100. Also, the highest diesel oil results were much higher in concentration than the highest B-100 results. An analysis of the highest exposure results and field notes revealed a probable association between these exposures and the use of diesel oil, use of a diesel-powered screed, elevated HMA paving application temperatures, lubricating and working on broken-down equipment, and operation of a broom machine.

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Section: Methodsmentioning

confidence: 99%

Personal Breathing Zone Exposures among Hot-Mix Asphalt Paving Workers; Preliminary Analysis for Trends and Analysis of Work Practices That Resulted in the Highest Exposure Concentrations

Osborn¹,

Snawder

Kriech³

et al. 2013

Journal of Occupational and Environmental Hygiene

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“…Selanjutnya, gliserol didehidrasi dengan asam format untuk mendapatkan senyawa alil alkohol melalui metode destilasi pada 195-260 0 C. Sintesis senyawa 2,3-dibromo propanol dicapai melalui brominasi alil alkohol pada -2-0 0 C menggunakan pelarut khloroform. Karakterisasi struktur dilakukan menggunakan spektrometer IR, 1 H-NMR, dan GC-MS. Pada penelitian ini, alil alkohol yang diperoleh melalui metode destilasi memiliki rendemen sebesar 44,78 % dan reaksi brominai alil alkohol menghasilkan senyawa 2,3-dibromo propanol dengan rendemen 80,3 % yield.…”

Section: Abstrakunclassified

Pemanfaatan Gliserol Dari Produk Samping Biodiesel Untuk Sintesis Senyawa 2,3-Dibromo Propanol

2017

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ABSTRAKTelah dilakukan sintesis senyawa 2,3-dibromo propanol menggunakan bahan awal gliserol hasil isolasi produk samping pembuatan biodiesel. Peningkatan yang cepat dalam produksi biodiesel diperkirakan akan mengakibatkan surplus gliserol. Penggunaan gliserol sebagai bahan awal bertujuan meningkatkan nilai ekonomis dari gliserol itu sendiri. Gliserol dengan rendemen 88,7 % telah diisolasi dari produk samping pembuatan biodiesel melalui reaksi transesterifikasi trigliserida dalam minyak sawit menggunakan katalis basa KOH. Selanjutnya, gliserol didehidrasi dengan asam format untuk mendapatkan senyawa alil alkohol melalui metode destilasi pada 195-260 0 C. Sintesis senyawa 2,3-dibromo propanol dicapai melalui brominasi alil alkohol pada -2-0 0 C menggunakan pelarut khloroform. Karakterisasi struktur dilakukan menggunakan spektrometer IR, 1 H-NMR, dan GC-MS. Pada penelitian ini, alil alkohol yang diperoleh melalui metode destilasi memiliki rendemen sebesar 44,78 % dan reaksi brominai alil alkohol menghasilkan senyawa 2,3-dibromo propanol dengan rendemen 80,3 % yield.

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“…Double bonds in polyunsaturated systems are more reactive than monounsaturated double bonds (AOCS, 2003). Compared to the high oleic acid content in hazelnut methyl esters, the high amounts of linoleic and linolenic acids in soy biodiesel make it more susceptible to oxidation (Bajpai and Tyagi, 2006). The cloud point is the temperature at which a cloud is formed in biodiesel caused by the first stage of crystallization.…”

Section: Fuel Propertiesmentioning

confidence: 99%

Synthesis and characterization of hazelnut oil-based biodiesel

Hanna

2009

Industrial Crops and Products

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Biodiesel: Source, Production, Composition, Properties and Its Benefits

Cited by 251 publications

References 31 publications

Personal Breathing Zone Exposures among Hot-Mix Asphalt Paving Workers; Preliminary Analysis for Trends and Analysis of Work Practices That Resulted in the Highest Exposure Concentrations

Personal Breathing Zone Exposures among Hot-Mix Asphalt Paving Workers; Preliminary Analysis for Trends and Analysis of Work Practices That Resulted in the Highest Exposure Concentrations

Pemanfaatan Gliserol Dari Produk Samping Biodiesel Untuk Sintesis Senyawa 2,3-Dibromo Propanol

Synthesis and characterization of hazelnut oil-based biodiesel

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