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 113 publications

(43 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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“…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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“…It triggers up the need of exploring clean, renewable and sustainable resources of energy [1][2][3]. Recently, research has been emphasized to use waste streams (including solid, liquid and gaseous) as resources to recover and produce biofuels such as biodiesel, bio-methane, bio-hydrogen, bio-oil, and other value-added products [4]. Microalgae is one of the most executable biomass for industrialization without any harmful effects on the environment.…”

Section: Introductionmentioning

confidence: 99%

Microalgae-based biofuels, resource recovery and wastewater treatment: A pathway towards sustainable biorefinery

Javed

Aslam

Rashid

et al. 2019

Fuel

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Intense utilization of natural fuel resources is threatening the global environment and societal sustainability. It triggers up the need for finding environmental-friendly and sustainable sources of energy. In this perspective, microalgae have emerged as a potential alternative. Microalgae are featured with distinct ability to provide ecological services and respond to the sustainability challenges simultaneously. Microalgae can fix atmospheric CO2, valorize waste resources, and can produce a wide variety of bio-products. The promising features of microalgae pitch the idea of establishing a sustainable bio-refinery to draw multifaceted benefits and reinforce the objectives of resource efficient bio-economy. Unfortunately, in the last few years, preferential studies have been carried out to assess the potential of microalgae-based integrated bio-refinery. This review critically discussed the recent developments, opportunities, and barriers in the microalgae bioindustry and wastewater treatment. Particularly, microalgae potentials for biofuels and resources recovery are addressed towards sustainable biorefinery. Moreover, techno-economic and 2 commercial viability of microalgae-led bio-refinery is reviewed to drive this technology towards practicality.

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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 113 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

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

Microalgae-based biofuels, resource recovery and wastewater treatment: A pathway towards sustainable biorefinery

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