A novel CaO-based catalyst obtained from silver croaker (Plagioscion squamosissimus) stone for biodiesel synthesis: Waste valorization and process optimization

Takeno, Mitsuo Lopes; Mendonça, Iasmin Maquiné; Barros, Silma de S.; Maia, Paulo José Sousa; Pessoa, Wanison A.G.; Souza, Mayane P.; Soares, Elzalina Ribeiro; Bindá, Rosane dos Santos; Calderaro, Fábio Leandro; Sá, Ingrity S.C.; Silva, Cláudia C.; Manzato, Lizandro; Iglauer, Stefan; Freitas, Flávio A. de

doi:10.1016/j.renene.2021.03.093

Cited by 20 publications

(11 citation statements)

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“…However, 2 h was enough to obtain 97.8%, which is higher than required by Brazilian and European regulatory agencies (96.5%). 6,83 When applying the ash from the tucumã peels, Mendonça et al 14 required 4 h of reaction to obtain a similar conversion. On the other hand, Barros et al 8 needed only 30 min to achieve similar conversions.…”

Section: Reaction Timementioning

confidence: 99%

“…[3][4][5] The environmental advantages of biodiesel are energy renewability, biodegradability, lower gas emissions, lower toxicity, higher cetane number, and combustion efficiency. 1,6 Biodiesel also has physicochemical properties similar to diesel. Given this, it can be used in compression engines alone or mixed as B10 (10%) to B30 (30%) in diesel; that is, it does not require significant modifications for its use.…”

Section: Introductionmentioning

confidence: 99%

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Eco‐friendly biodiesel production using passion fruit peels and cupuaçu seeds: Catalyst development and process optimization

Barros,

Nobre,

Lobo

et al. 2023

Biofuels Bioprod Bioref

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Yellow passion fruit peel and cupuaçu seeds are common wastes. Usually, they have few or no applications and are discarded, causing environmental pollution. To use them in a new way and reduce ecological pollution, we obtained the ash of yellow passion fruit peels by calcination. We characterized it using Fourier‐transform infrared spectroscopy with attenuated total reflectance (FTIR‐ATR), X‐ray fluorescence (XRF), X‐ray diffractometry (XRD), adsorption‐desorption of N2, scanning electron microscopy (SEM), basicity, and soluble alkalinity. It was observed that the ash was mainly composed of potassium (69%) in the form of carbonate, chloride, and sulfate, with a good surface area (11.23 m2 g−1). The cupuaçu butter was also extracted from the cupuaçu seeds and characterized, showing low acidity, peroxide, saponification, and iodine indexes, in addition to presenting a lipid profile with 57% saturated fatty acid and 43% unsaturated fatty acid. Oleic and stearic acids were present in higher proportions. These results demonstrate that this butter can be a sustainable input in biodiesel production. Thus, the ash was used as a heterogeneous catalyst in the butter transesterification. The biodiesel synthesis was optimized, resulting in 97.8% butter conversion into biodiesel under the following conditions: reaction time of 2 h, 5 wt% of catalyst, 80 °C, and a methanol‐to‐oil molar ratio of 30. This work, therefore, shows that it is possible to obtain and utilize bioinputs, such as cupuaçu butter and passion fruit peel ash, to produce biodiesel through transesterification, and the use of waste materials (precisely passion fruit peels and cupuaçu seeds) makes this method a cost‐effective and environmentally friendly approach to biofuel production.

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Section: Reaction Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eco‐friendly biodiesel production using passion fruit peels and cupuaçu seeds: Catalyst development and process optimization

Barros,

Nobre,

Lobo

et al. 2023

Biofuels Bioprod Bioref

Self Cite

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“…By comparison, the band of XRD assessment and the points were discovered at an angle of (2θ) located at several degrees aligning from 32.46°, 37.64°, 54.12° and 62.60°, and this moreover, attests to the presence of CaO [6]. Takeno et al [14] described cubic crystals in Calcined Silver Croaker Stone (CSCS), showing that the calcination temperature and time were adequate to decompose all the carbonates into oxides. CaO has been designated as one of the most suitable catalysts for the transesteri cation reaction of soybean oil [22].…”

Section: Evaluation Of Eggshells Through Xrd Techniquementioning

confidence: 99%

“…CaO, on the other hand, has a high bonding density with H 2 O and CO 2 , so it is easily degraded during the aqueous reaction [12,13]. CaO also demonstrated improved stability and catalytic e ciency in biodiesel synthesis processes due to its high basic strength, low cost and inadequate dissolvability in methanol [14]. CaO is also the cheapest and most durable heterogeneous catalyst [14].…”

Section: Introductionmentioning

confidence: 99%

“…CaO also demonstrated improved stability and catalytic e ciency in biodiesel synthesis processes due to its high basic strength, low cost and inadequate dissolvability in methanol [14]. CaO is also the cheapest and most durable heterogeneous catalyst [14]. Due to these properties, CaO was obtained from eggshells [15,5], snail shells [16], cockles shells (Anadara granosa) [17], and animal bones [18].…”

Section: Introductionmentioning

confidence: 99%

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Optimization and Kinetics Studies of Biodiesel Synthesis from Jatropha Curcas Oil Under the Application of Eco-Friendly Microwave Heating Technique: An Environmentally Benign and Sustainable Bio-Waste Management Approach

Amesho

Lin

Chen

et al. 2022

Preprint

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This study attempts to synthesize biodiesel as a green liquid fuel from Jatropha curcas oil utilizing waste eggshell (WES) as an effective and excellent sustainable source of the heterogeneous catalyst under the application of environmental benign microwave heating technique. After preparing the CaO-based catalyst, diverse characterization techniques such as XRD, EDS, SEM, FITR, and BET were employed for measurements. Under different optimized conditions, a considerable high biodiesel yield of 91.7% was attained while employing the following reaction conditions; methanol to oil ratio (MTOR) of 9:1, 5 wt% catalyst loading, 165 min reaction time with a microwave power of 800 W, and a 65°C reaction temperature. The developed catalyst had significantly retained its reusability up to the 5th cycle of reuse. The catalysed transesterification process's activation energy (Ea) of 9.58 kJ/mol demonstrated that the reaction is chemically controlled. The physico-chemical properties of the Jatropha curcas oil (JCO) biodiesel were studied in accordance with international standards such as ASTM D6751 and EN14214, among others. Therefore, the waste eggshell has been utilized as a renewable base heterogeneous catalyst for novel biodiesel synthesis from JCO, which can be applied in diesel engines to lessen air pollution, specifically pollutant emissions from diesel vehicles. The results of this study are not for academic purposes only. They can also serve as models for industrial biodiesel production by exploiting bio-waste as catalysts and non-edible oils as feedstocks in microwave heating systems as environmentally friendly chemistry systems. In addition, our study uses non-consumable oil feedstock and bio-waste materials in an economical way to produce biofuel while contributing to environmental sustainability and sustainable bio-waste management. This approach extends to the existing state-of-the-art research. Therefore, the proposed value increase method contributes to integrating the circular economy concept through an efficient biorefinery model.

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Omics in Biofuel Production: A Sustainable Approach

Paes¹,

Paes²,

Lobo³

et al. 2022

Omics Insights in Environmental Bioremediation

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A novel CaO-based catalyst obtained from silver croaker (Plagioscion squamosissimus) stone for biodiesel synthesis: Waste valorization and process optimization

Cited by 20 publications

References 50 publications

Eco‐friendly biodiesel production using passion fruit peels and cupuaçu seeds: Catalyst development and process optimization

Eco‐friendly biodiesel production using passion fruit peels and cupuaçu seeds: Catalyst development and process optimization

Optimization and Kinetics Studies of Biodiesel Synthesis from Jatropha Curcas Oil Under the Application of Eco-Friendly Microwave Heating Technique: An Environmentally Benign and Sustainable Bio-Waste Management Approach

Omics in Biofuel Production: A Sustainable Approach

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