High quality potassium phosphate production through step-by-step glycerol purification: A strategy to economize biodiesel production

Javani, Azita; Hasheminejad, Meisam; Tahvildari, Kambiz; Tabatabaei, Meisam

doi:10.1016/j.biortech.2011.09.134

Cited by 54 publications

(19 citation statements)

References 9 publications

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“…Among the methods currently used for glycerol purification are MST and distillation (Javani et al, 2012). MST is more cost-effective than distillation provided that crude glycerin undergoes a pre-purification in order to reduce salts and organic nonglycerol matter (ONGM, such as methyl ester) (Manosak et al, 2011).…”

Section: Glycerin Purificationmentioning

confidence: 99%

“…In a similar study, Manosak et al (2011) used a better precipitant, i.e., isopropanol (IPA), and increased the purity of the glycerin to 95.74 wt.%. In an innovative investigation, Javani et al (2012) through a step-by-step approach further increased the purity of crude glycerin to as high as 96.08 wt.%. They also managed to generate high quality potassium phosphate salts, i.e., KH2PO4 and K2HPO4 as well as FFAs with a purity of 98%, 98.05%, and 99.58%, respectively (Javani et al, 2012).…”

Section: Glycerin Purificationmentioning

confidence: 99%

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Recent trends in biodiesel production

et al. 2015

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HIGHLIGHTSThis article fully discusses the recent trends in the production of one the most attractive types of biofuels, i.e., biodiesel.with a focus on the existing obstacles for its large scale production. Moreover, recent innovations/improvements under three categories of upstream, mainstream, and downstream processes are also presented. Upstream strategies are mainly focused on seeking more sustainable oil feedstocks and/or enhancing the quality of waste-oriented ones. The mainstream strategies section highlights the numerous attempts made to enhance agitation efficiency including chemical and/or mechanical strategies. Finally, the innovative downstream strategies basically dealing with 1) separation of biodiesel and glycerin, 2) purification of biodiesel and glycerin, and 3) improving the characteristics of the produced fuel, are comprehensively reviewed.

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Section: Glycerin Purificationmentioning

confidence: 99%

Section: Glycerin Purificationmentioning

confidence: 99%

Recent trends in biodiesel production

et al. 2015

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“…Javani et al [29], in the same way, proposed that crude glycerol should produce potassium phosphate as a by-product from a sequence of reactions of saponification and acidification. These authors suggested these proceedings under a wider strategy for producing purified fatty acids and glycerol, with a lower biodiesel production.…”

Section: Techniques Of Glycerol Purificationmentioning

confidence: 99%

Upgrading the Glycerol from Biodiesel Production as a Source of Energy Carriers and Chemicals—A Technological Review for Three Chemical Pathways

Rodrigues

Bordado²,

Santos³

2017

Energies

130

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Abstract:Glycerol is a by-product of biodiesel obtained from biomass, accounting for 10% of the biodiesel production. In the context of a green economy, aiming for a reduction of the emission of atmospheric greenhouse gases emissions, the demand of biodiesel is expected to increase vastly, in parallel with a side glut supply of glycerol. Given the high cost of biodiesel compared with its fossil congener, upgrading of glycerol into added-value products can represent a secondary income source and turn the production of such alternative fuels economically sustainable in the long term. The glycerol obtained as by-product of biodiesel from biomass is in a crude form and must be purified. Some industrial solutions and applications were therein geared. The survey presented in this work, based on a reviewing of the existing literature, examines three routes for the valuing glycerol into energy carriers and chemicals, namely, carbonation, acylation, and steam reforming to hydrogen. The latter is embodied of great interest and importance, insofar that hydrogen by itself is considered as straighforward clean fuel for transportation uses, due to its high calorific power and to recent advances in fuel cells. We also have focused on the chain value from biomass to energies carriers through these pathways.

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“…The proportions of impurities in crude glycerine vary depending on the raw material and method used in the production. Crude glycerine purified using methods such as vacuum distillation, adsorption of pollutants on activated carbon, pH adjustment, and solvent extraction can be used in many sectors such as cosmetics, food, and chemical industries and gains economic value (Javani et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Biodiesel production from free fatty acids and the effects of its blends with alcohol–diesel on engine characteristics

Reşi̇toğlu

Keskïn

2016

Clean Techn Environ Policy

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In this experimental study, biodiesel production from free fatty acids of soybean oil and the effects of its blends with alcohol-diesel on diesel engine performance and exhaust emissions were studied. Crude glycerine was neutralized to produce the free fatty acids. Methyl alcohol was reacted with the free fatty acids in the presence of acid catalyst to form biodiesel. Biodiesel, diesel, and alcohols were mixed at different volumetric ratios, and the properties of each blend were determined. The blends and diesel were tested in a single cylinder direct injection diesel engine at full-load conditions. In conclusion, torque and power characteristics of blends were found similar to those of diesel. Break specific fuel consumption of the blends slightly increased depending on lower heating values. CO and smoke emissions decreased up to 34.52 and 39.30 %, respectively. Although NO x emissions increased with B50, it showed a downward trend with alcohol-containing blends.

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High quality potassium phosphate production through step-by-step glycerol purification: A strategy to economize biodiesel production

Cited by 54 publications

References 9 publications

Recent trends in biodiesel production

Recent trends in biodiesel production

Upgrading the Glycerol from Biodiesel Production as a Source of Energy Carriers and Chemicals—A Technological Review for Three Chemical Pathways

Biodiesel production from free fatty acids and the effects of its blends with alcohol–diesel on engine characteristics

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