scholarly journals Calcium Oxide Derived from Waste Shells of Mussel, Cockle, and Scallop as the Heterogeneous Catalyst for Biodiesel Production

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Achanai Buasri ◽  
Nattawut Chaiyut ◽  
Vorrada Loryuenyong ◽  
Phatsakon Worawanitchaphong ◽  
Sarinthip Trongyong

The waste shell was utilized as a bioresource of calcium oxide (CaO) in catalyzing a transesterification to produce biodiesel (methyl ester). The economic and environmen-friendly catalysts were prepared by a calcination method at 700–1,000°C for 4 h. The heterogeneous catalysts were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), and the Brunauer-Emmett-Teller (BET) method. The effects of reaction variables such as reaction time, reaction temperature, methanol/oil molar ratio, and catalyst loading on the yield of biodiesel were investigated. Reusability of waste shell catalyst was also examined. The results indicated that the CaO catalysts derived from waste shell showed good reusability and had high potential to be used as biodiesel production catalysts in transesterification of palm oil with methanol.

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Achanai Buasri ◽  
Tidarat Rattanapan ◽  
Chalida Boonrin ◽  
Chosita Wechayan ◽  
Vorrada Loryuenyong

Microwave-assisted biodiesel production via transesterification ofJatropha curcasoil with methanol using solid oxide catalyst derived from waste shells of oyster andPyramidellawas studied. The shells were calcined at 900°C for 2 h and calcium oxide (CaO) catalyst characterizations were carried out by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscope (SEM), and the Brunauer-Emmett-Teller (BET) surface area measurements. The effects of reaction variables such as reaction time, microwave power, methanol/oil molar ratio, and catalyst loading on the yield of biodiesel were investigated. Reusability of waste shell catalyst was also examined. The results indicated that the economic and environmentally friendly catalysts derived from oyster andPyramidellashells showed good reusability and had high potential to be used as biodiesel production catalysts under microwave-assisted transesterification ofJatropha curcasoil with methanol.


2013 ◽  
Vol 834-836 ◽  
pp. 550-554 ◽  
Author(s):  
Warakom Suwanthai ◽  
Vittaya Punsuvon ◽  
Pilanee Vaithanomsat

In this research, calcium methoxide was synthesized as solid base catalyst from quick lime for biodiesel production. The catalyst was further characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), attenuated total reflection fourier transform (ATR-FTIR) and Energy-dispersive X-ray spectroscopies (EDX) to evaluate its performance. The transesterification of refined palm oil using calcium methoxide and the process parameters affecting the fatty acid methyl ester (FAME) content such as catalyst concentration, methanol:oil molar ratio and reaction time were investigated. The results showed that the FAME content at 97% was achieved within 3 h using 3 %wt catalyst loading, 12:1 methanol:oil molar ratio and 65 °C reaction temperature. The result of FAME suggested calcium methoxide was the promising solid catalyst for substitution of the conventional liquid catalyst.


2021 ◽  
pp. 20-27
Author(s):  
Ngee Sing Chong ◽  
Francis Uchenna Okejiri ◽  
Saidi Abdulramoni ◽  
Shruthi Perna ◽  
Beng Guat Ooi

Due to the high cost of feedstock and catalyst in biodiesel production, the viability of the biodiesel industry has been dependent on government subsidies or tax incentives. In order to reduce the cost of production, food wastes including eggshells and oyster shells have been used to prepare calcium oxide (CaO) catalysts for the transesterification reaction of biodiesel synthesis. The shells were calcined at 1000 °C for 4 hours to obtain CaO powders which were investigated as catalysts for the transesterification of waste cooking oil. The catalysts were characterized by Fourier Transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), X-ray powder diffraction (XRD), and X-ray fluorescence (XRF) spectroscopy. Reaction parameters such as methanol-to-oil molar ratio, CaO catalyst concentration, and reaction time were evaluated and optimized for the percentage conversion of cooking oil to biodiesel esters. The oyster-based CaO showed better catalytic activity when compared to the eggshell-based CaO under the same set of reaction conditions.


2015 ◽  
Vol 659 ◽  
pp. 216-220 ◽  
Author(s):  
Achanai Buasri ◽  
Thaweethong Inkaew ◽  
Laorrut Kodephun ◽  
Wipada Yenying ◽  
Vorrada Loryuenyong

The use of waste materials for producing biodiesel via transesterification has been of recent interest. In this study, the pork bone was used as the raw materials for natural hydroxyapatite (NHAp) catalyst. The calcination of animal bone was conducted at 900 °C for 2 h. The raw material and the resulting heterogeneous catalyst were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM) and the Brunauer-Emmett-Teller (BET) method. The effects of reaction time, microwave power, methanol/oil molar ratio, catalyst loading and reusability of catalyst were systematically investigated. The optimum conditions, which yielded a conversion of oil of nearly 94%, were reaction time 5 min and microwave power 800 W. The results indicated that the NHAp catalysts derived from pork bone showed good reusability and had high potential to be used as biodiesel production catalysts under microwave-assisted transesterification of Jatropha Curcas oil with methanol.


2020 ◽  
Vol 21 (1) ◽  
pp. 88
Author(s):  
Alwi Gery Agustan Siregar ◽  
Renita Manurung ◽  
Taslim Taslim

In this study, silica derived from corncobs impregnated with sodium hydroxide to obtain sodium silicate was calcined, prepared, and employed as a solid base catalyst for the conversion of oils to biodiesel. The catalyst was characterized by X-Ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope Energy Dispersive X-Ray Spectroscopy (SEM-EDS), and Brunauer-Emmet-Teller (BET) and Barrett-Joyner-Halenda (BJH) methods. Gas Chromatography-Mass Spectrometry (GC-MS) was used to characterize the biodiesel products. The optimum catalyst conditions were calcination temperature of 400 °C for 2 h, catalyst loading of 2%, and methanol: oil molar ratio of 12:1 at 60 °C for 60 min, that resulted in a yield of 79.49%. The final product conforms to the selected biodiesel fuel properties of European standard (EN14214) specifications. Calcined corncob-derived sodium silicate showed high potential for use as a low-cost, high-performance, simple-to-prepare solid catalyst for biodiesel synthesis.


2015 ◽  
Vol 659 ◽  
pp. 237-241 ◽  
Author(s):  
Achanai Buasri ◽  
Teera Sriboonraung ◽  
Kittika Ruangnam ◽  
Pattarapon Imsombati ◽  
Vorrada Loryuenyong

Calcium oxide (CaO) is one of the most promising heterogeneous alkali catalysts since it is cheap, abundantly available in nature, and some of the sources of this compound are renewable (waste material consisting of calcium carbonate (CaCO3)). In this study, the waste enamel venus shell was used as the raw material for CaO catalyst. The calcination of bio-waste was conducted at 900 °C for 2 h. The raw material and the resulting CaO catalyst were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM) and the Brunauer-Emmett-Teller (BET) method. The effects of reaction variables such as reaction time, microwave power, methanol/oil molar ratio, and catalyst loading on the yield of biodiesel were investigated by gas chromatograph-mass spectrometry (GC-MS). From the experimental results, it was found that the CaO catalysts derived from waste material showed good catalytic activity (the conversion of oil of nearly 93%, a very similar catalytic activity with laboratory CaO) and had high potential to be used as biodiesel production catalysts in transesterification of Jatropha Curcas oil with methanol.


Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 360 ◽  
Author(s):  
Kullatida Ratchadapiban ◽  
Piyasan Praserthdam ◽  
Duangamol Tungasmita ◽  
Chutima Tangku ◽  
Wipark Anutrasakda

A series of protonated amino-functionalized SBA-15 materials was synthesized and tested as heterogeneous catalysts for the esterification of glycerol with oleic acid to produce monoolein. Mesoporous SBA-15 (S) was functionalized with three different aminosilanes: 3-aminopropyltriethoxysilane (N1); [3-(2-amino-ethylamino)propyltrimethoxysilane] (N2); and (3-trimethoxysilylpropyl) diethylenetriamine (N3), before being impregnated with 40 wt % 12-tungstophosphoric acid (HPW). The resulting nanocatalysts (S-Nx-HPW) were characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), N2 adsorption-desorption, SEM equipped with energy dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), and elemental analysis techniques. The presence of components of the nanocatalysts and the preservation of the hexagonal structure of SBA-15 were confirmed. Using different functionalizing agents considerably affected the textural properties and acidity of the synthesized nanocatalysts, which helped to improve the catalytic performance. In particular, S-N2-HPW was more active and selective than other catalysts in this study, as well as than a number of other commercial acid catalysts, with 95.0% oleic acid conversion and 60.9% monoolein selectivity being obtained after five h of reaction at 160 °C using 2.5 wt % of catalyst loading and glycerol/oleic acid molar ratio of 4:1. Aminosilane functionalization also helped to increase the reusability of the catalysts to at least six cycles without considerable loss of activity through strong electrostatic interactions between HPW anions and the protonated amino-functionalized SBA-15 materials.


2016 ◽  
Vol 1 ◽  
Author(s):  
Amilia Linggawati

<p>The aims of this study were to prepare and characterize environment-friendly calcium oxide (CaO) heterogeneous catalysts from blood cockle (<em>Anadara granosa</em>) shells and utilize for the synthesis of biodiesel. In this study, biodiesel was produced by transesterification reaction of waste frying oil with methanol using the CaO catalyst.  The catalysts were prepared by crushing and calcining of <em>Anadara granosa</em> shells at 800 <sup>o</sup>C and 900 ºC for 10 hours. The resulting CaO catalyst were characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray flourescense spectrometry (XRF), and Fourier transform infrared spectroscopy (FTIR). XRD patterns of calcined catalyst showed intense peaks of calcium oxide (2θ = 32.24<sup>o</sup>, 37.38<sup>o</sup> and 64.16<sup>o</sup>), and it was consistent with XRF results (&gt;99% of CaO found) that revealed calcium was the major element present in the <em>Anadara granosa</em> shells. The maximum yield of biodiesel produced was 82.25% under reaction conditions of catalyst loading of 3 wt.%, methanol to oil ratio of 15:1, reaction time of 3 h, temperature of 60 <sup>o</sup>C  and using a catalyst calcined at 900 <sup>o</sup>C. </p>


2021 ◽  
Vol 17 (1) ◽  
pp. 53-64
Author(s):  
Shamala Gowri Krishnan ◽  
Fei-Ling Pua ◽  
Hong-Hua Lim

Industrial waste is produced in large amounts annually; without proper planning, the waste might cause a serious threat to the environment. Hence, an industrial waste-based heterogeneous magnetic catalyst was synthesized using carbide lime waste (CLW) as raw material for biodiesel production via transesterification of palm oil. The catalyst was successfully synthesized by the one-step impregnation method and calcination at 600 °C. The synthesized catalyst, C-CLW/g-Fe2O3, was characterized by temperature-programmed desorption of carbon dioxide (CO2-TPD), scanning electron microscopy (SEM), electron dispersive X-ray spectroscopy (EDX), X-ray Diffraction (XRD), Brunauer-Emmett-Teller (BET), vibrating sample magnetometer (VSM), and Fourier transform infrared spectroscopy (FT-IR). The catalyst has a specific surface area of 18.54 m2/g and high basicity of 3,637.20 µmol/g. The catalytic performance shows that the optimum reaction conditions are 6 wt% catalyst loading, 12:1 methanol to oil molar ratio with the reaction time of 3 h at 60 °C to produce 90.5% biodiesel yield. The catalyst exhibits good catalytic activity and magnetism, indicating that the CLW can be a potential raw material for catalyst preparation and application in the biodiesel industry. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 


2016 ◽  
Vol 1 (1) ◽  
Author(s):  
Amilia Linggawati

<p>The aims of this study were to prepare and characterize environment-friendly calcium oxide (CaO) heterogeneous catalysts from blood cockle (<em>Anadara granosa</em>) shells and utilize for the synthesis of biodiesel. In this study, biodiesel was produced by transesterification reaction of waste frying oil with methanol using the CaO catalyst.  The catalysts were prepared by crushing and calcining of <em>Anadara granosa</em> shells at 800 <sup>o</sup>C and 900 ºC for 10 hours. The resulting CaO catalyst were characterized using X-ray diffraction (XRD), thermogravimetric analysis (TGA), X-ray flourescense spectrometry (XRF), and Fourier transform infrared spectroscopy (FTIR). XRD patterns of calcined catalyst showed intense peaks of calcium oxide (2θ = 32.24<sup>o</sup>, 37.38<sup>o</sup> and 64.16<sup>o</sup>), and it was consistent with XRF results (&gt;99% of CaO found) that revealed calcium was the major element present in the <em>Anadara granosa</em> shells. The maximum yield of biodiesel produced was 82.25% under reaction conditions of catalyst loading of 3 wt.%, methanol to oil ratio of 15:1, reaction time of 3 h, temperature of 60 <sup>o</sup>C  and using a catalyst calcined at 900 <sup>o</sup>C. </p>


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