Integrated valorization of waste cooking oil and spent coffee grounds for biodiesel production: Blending with higher alcohols, FT–IR, TGA, DSC and NMR characterizations

Atabani, A.E.; Shobana, Sutha; Mohammed, M. N.; Uğuz, Gediz; Kumar, Gopalakrishnan; Arvindnarayan, Sundaram; Aslam, Muhammad; Al-Muhtaseb, Ala’a H.

doi:10.1016/j.fuel.2019.01.169

Cited by 107 publications

(31 citation statements)

References 55 publications

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“…The physicochemical characteristics of HSD, biodiesels, and ethanol are shown in Table 2. Acid value is the representation of residual acid in fuel; the physicochemical properties of the fuel may be altered with higher acid value [65]. The acid value of all biodiesels was observed within the ASTM standards specified limits, ranging from 0.20 to 0.30 mg KOH/g.…”

Section: Biodiesel Blends and Characterizationmentioning

confidence: 88%

Modeling Viscosity and Density of Ethanol-Diesel-Biodiesel Ternary Blends for Sustainable Environment

et al. 2020

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Rapid depletion in fossil fuels, inflation in petroleum prices, and rising energy demand have forced towards alternative transport fuels. Among these alternative fuels, diesel-ethanol and diesel-biodiesel blends gain the most attention due to their quality characteristics and environmentally friendly nature. The viscosity and density of these biodiesel blends are slightly higher than diesel, which is a significant barrier to the commercialization of biodiesel. In this study, the density and viscosity of 30 different ternary biodiesel blends was investigated at 15 °С and 40 °С, respectively. Different density and viscosity models were developed and tested on biodiesel blends soured from different feedstock’s including palm, coconut, soybean, mustard, and calophyllum oils. The prognostic ability and precisions of these developed models was assessed statistically using Absolute Percentage Error (APE) and Mean Absolute Percentage Error (MAPE). The MAPE of 0.045% and 0.085% for density model and 1.85%, 1.41%, 3.48% and 2.27%, 1.85%, 3.50% for viscosity models were obtained on % volume and % mass basis. These developed correlations are useful for ternary biodiesel blends where alcohols are the part of biodiesel blends. The modeled values of densities and viscosities of ternary blends were significantly comparable with the measured densities and viscosities, which are feasible to avoid the harm of vehicles’ operability.

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Section: Biodiesel Blends and Characterizationmentioning

confidence: 88%

Modeling Viscosity and Density of Ethanol-Diesel-Biodiesel Ternary Blends for Sustainable Environment

et al. 2020

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“…For decades extensive research has been done on valorization of waste oils or vegetable oils for the production of fatty acid methyl esters and fatty acid ethyl esters (FAMEs and FAEEs) that are used as biodiesel [1][2][3] . Due to the technical challenges faced upon production and use of biodiesel, research has been directed toward the production of advanced biofuels from microorganisms [4] .…”

Section: Introductionmentioning

confidence: 99%

Bacillus subtilisspore surface display of photodecarboxylase for the transformation of lipids to hydrocarbons

Karava

Gockel

Kabisch

2020

Preprint

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The display of enzymes on the surface of spores allows the rapid and very simple biotechnological production of immobilized enzymes. Here we describe the development of a Bacillus subtilis spore display platform and its application to produce hydrocarbons from lipids obtained from the oleaginous yeasts Yarrowia lipolytica, Cutaneotrichosporon oleaginosus as well as olive oil.Lipid hydrolysis was examined in a bienzymatic one-pot cascade using a commercially immobilized lipase (RO lipase) as well as spores with and without additional heterologous lipase expression. Decarboxylation of the released fatty acids was achieved displaying a photodecarboxylase (CvFAP) on the spore surface. Differences in composition of the formed hydrocarbons were observed depending on the lipids source. Using 3D printed lighting equipment titers of up to 64.0 ± 5.6 mg/L hydrocarbons were produced.

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“…1 In spite of huge energy resources, 68%, people of Pakistan constrain to use poor and old energy resources to accomplish their energy demand. 1 In spite of huge energy resources, 68%, people of Pakistan constrain to use poor and old energy resources to accomplish their energy demand.…”

Section: Introductionmentioning

confidence: 99%

“…With the exponential growth of population and industrializations, depletion of fossil fuels is leading to look for alternative clean fuels by treating conventional fuels and using renewable resources such as waste biomass including crop residues, spent coffee grounds, wastewater, and other wastes to reduce greenhouse gases emissions. 1 In spite of huge energy resources, 68%, people of Pakistan constrain to use poor and old energy resources to accomplish their energy demand. 2,3 The energy utilization of Pakistan per capita is only 3,894 kWh, which is lowest in comparison with 17,620 kWh of the world average.…”

Section: Introductionmentioning

confidence: 99%

Rheological improvement in performance of low‐rank coal–water slurries using novel cost‐effective additives

Amin

Tahir

Saleem

et al. 2020

Asia-Pacific J Chem Eng

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Coal-water slurry (CWS) has been targeted as a promising fuel and an alternative to fuel oil. CWS has numerous advantages of low and convenient transportation and high solid content. Pakistan is going through a severe energy crisis and among the top 10 countries facing energy crises reported by the United Nations. Besides, Pakistan has become the top seventh country in coal reserves (i.e., 185 billion tones) after the discovery of huge lignite coal reserves in Thar, Sind province. Previous studies investigated the use of additives to enhance CWS properties at a low shear rate and its utilization accordingly. Particularly, the present work studied the high range of shear rate to improve the properties of CWS for transportation and combustion purposes. This study on the improvement in performance of rheology properties of CWS is conducted to improve the properties by cost-effective additives. The coal concentration varies from 20% to 60%, whereas runs were carried out with and without the costeffective additives. The results demonstrated that the coal slurry showed shearthinning property when viscosity was increased at high concentrations in the absence of additives. The addition of additive changed the rheological behavior from pseudoplastic to dilatant region. The presence of a high fraction of coal increased the apparent viscosity of CWS. The static stability test of all coal samples was performed using rod drop method at concentrations of 40% to 60%. The study found that stability was achieved earlier with a lower concentration of 40% as compared with higher concentrations of 50-60%. It is expected that this research would be helpful for the country facing adverse energy crises that badly affect the economy and other social aspects of human life. K E Y W O R D Scoal, coal-water slurry, viscosity, rheology, calcium lignosulfonate

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Integrated valorization of waste cooking oil and spent coffee grounds for biodiesel production: Blending with higher alcohols, FT–IR, TGA, DSC and NMR characterizations

Cited by 107 publications

References 55 publications

Modeling Viscosity and Density of Ethanol-Diesel-Biodiesel Ternary Blends for Sustainable Environment

Modeling Viscosity and Density of Ethanol-Diesel-Biodiesel Ternary Blends for Sustainable Environment

Bacillus subtilisspore surface display of photodecarboxylase for the transformation of lipids to hydrocarbons

Rheological improvement in performance of low‐rank coal–water slurries using novel cost‐effective additives

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