Effective Catalytic Deoxygenation of Waste Cooking Oil over Nanorods Activated Carbon Supported CaO

2016 ◽  
Vol 707 ◽  
pp. 175-181 ◽  
Author(s):  
Ghassan Abdulkareem-Alsultan ◽  
N. Asikin-Mijan ◽  
Yun Hin Taufiq-Yap

Under nitrogen atmosphere, waste cooking oil (WCO) was deoxygenated in semi-batch experiments by using the nanorods of phosphate-activated carbon, which is derived from walnut shell and promoted by CaO as catalyst at 350 °C. The deoxygenation reaction showed high activity (> 48% hydrocarbon yield) and high selectivity towards decarboxylation/decarbonylation (deCOx) reactions via exclusive formation of green diesel C15 fraction (> 60%). The high activity and high selectivity were attributed to the good physicochemical characteristics of the catalyst, including improved metal dispersion, high surface area and high basic properties. Overall, this study demonstrates CaO/AC catalytic deoxygenation as a promising approach to produce liquid green diesel C15 from WCO under hydrogen-free atmosphere.

RSC Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 4996-5009 ◽  
Author(s):  
G. Abdulkareem-Alsultan ◽  
N. Asikin-Mijan ◽  
G. Mustafa-Alsultan ◽  
H. V. Lee ◽  
Karen Wilson ◽  
...  

Untreated waste cooking oil (WCO) with significant levels of water and fatty acids (FFAs) was deoxygenated over Co3O4–La2O3/ACnano catalysts under an inert flow of N2 in a micro-batch closed system for the production of green diesel.


RSC Advances ◽  
2020 ◽  
Vol 10 (61) ◽  
pp. 37218-37232
Author(s):  
Wan Nor Adira Wan Khalit ◽  
Tengku Sharifah Marliza ◽  
N. Asikin-Mijan ◽  
M. Safa Gamal ◽  
Mohd Izham Saiman ◽  
...  

In this work, the catalytic deoxygenation of waste cooking oil (WCO) over acid–base bifunctional catalysts (NiLa, NiCe, NiFe, NiMn, NiZn, and NiW) supported on activated carbon (AC) was investigated.


2020 ◽  
Author(s):  
Hemanandh Janarthanam ◽  
Venkatesan Sorakka Ponnappan ◽  
Ganesan Subbiah ◽  
Purushothaman Mani ◽  
D. Suman ◽  
...  

EKUILIBIUM ◽  
2012 ◽  
Vol 11 (1) ◽  
Author(s):  
Dwi Ardiana Setyawardani

<p><strong><em>Abstract: </em></strong><em>Glycerol is biodiesel byproduct and has high economic value, so it needs purification to get high purity.Crude glycerol was obtained from triglyceride transesterification with methanol and KOH catalyst. The aims of this research were purify glycerol from biodiesel byproduct and determine the suitable of adsorbent for bleaching of glycerol. Crude glycerol used in this research was from waste of cooking oil and kapokseed oil. In purification of glycerol from waste cooking oil is started by separate methanol and water by distillation. It followed byadding 6% acid solution (HCl, H<sub>2</sub>SO<sub>4</sub>, H<sub>3</sub>PO<sub>4</sub>). Glycerol was mixed with acid solution by 3:10 ratio and the solution was then filtrated to separate the salt.  The filtrate was then bleached by adding 2% weight adsorbent (activated carbon, bleaching earth and activated zeolite), then stirred for 30 minutes at 30 <sup>o</sup>C. The solution was settled for 120 minutes and then filtered by whatman paper. The results showed that the optimum density of glycerol was 1.26 g/ml with addition of H<sub>2</sub>SO<sub>4</sub> 6% volume and 0,5% water content. The brightest color of glycerol was light brown resulted from the adsorption process used bleaching earth.  </em></p><p><strong><em>Keywords: </em></strong><em>Glycerol, Activated Carbon, Bleaching earth, Activated Zeolite.</em><em></em></p><p> </p>


2021 ◽  
Vol 17 (1) ◽  
pp. 135-145
Author(s):  
Momodou Salieu Sowe ◽  
Arda Rista Lestari ◽  
Eka Novitasari ◽  
Masruri Masruri ◽  
Siti Mariyah Ulfa

Hydrodeoxygenation (HDO) is applied in fuel processing technology to convert bio-oils to green diesel with metal-based catalysts. The major challenges to this process are feedstock, catalyst preparation, and the production of oxygen-free diesel fuel. In this study, we aimed to synthesize Ni catalysts supported on silica-zirconia and alumina-zirconia binary oxides and evaluated their catalytic activity for waste cooking oil (WCO) hydrodeoxygenation to green diesel. Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2 were synthesized by wet-impregnation and hydrodeoxygenation of WCO was done using a modified batch reactor. The catalysts were characterized using X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy - energy dispersive X-ray spectroscopy (SEM-EDS), and N2 isotherm adsorption-desorption analysis. Gas chromatography - mass spectrometry (GC-MS) analysis showed the formation of hydrocarbon framework n-C15 generated from the use of Ni/Al2O3-ZrO2 with the selectivity of 68.97% after a 2 h reaction. Prolonged reaction into 4 h, decreased the selectivity to 58.69%. Ni/SiO2-ZrO2 catalyst at 2 h showed selectivity of 55.39% to n-C15. Conversely, it was observed that the reaction for 4 h increased selectivity to 65.13%. Overall, Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2 catalysts produced oxygen-free green diesel range (n-C14-C18) enriched with n-C15 hydrocarbon. Reaction time influenced the selectivity to n-C15 hydrocarbon. Both catalysts showed promising hydrodeoxygenation activity via the hydrodecarboxylation pathway. 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). 


Konversi ◽  
2012 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Hesti Wijayanti ◽  
Harmin Nora ◽  
Rajihah Amelia

Abstrak - Penelitian ini bertujuan untuk mengetahui sejauh mana kemampuan arang aktif dari serbuk gergaji kayu ulin dalam proses adsorpsi minyak goreng bekas. Tujuan lainnya adalah untuk mengetahui waktu adsorpsi yang paling baik diantara range waktu yang digunakan untuk proses adsorpsi minyak goreng bekas dengan menggunakan arang aktif dari serbuk gergaji kayu ulin. Arang aktif dibuat dengan membakar serbuk gergaji kayu dan diaktivasi menggunakan ZnCl2 0,1 N. Arang aktif yang diperoleh digunakan untuk mengadsorpsi minyak goreng bekas dengan variasi jumlah arang sebanyak 5, 10 dan 15 gram. Selanjutnya minyak goreng bekas dan arang aktif yang sudah dicampurkan dalam Erlenmeyer tersebut diadsorpsi dengan variasi waktu 40, 60 dan 80 menit menggunakan shaker. Setelah disaring, minyak goreng bekas tersebut dianalisa angka asam, bilangan peroksida dan bilangan penyabunannya.Hasil penelitian yang didapatkan yang mememenuhi standar SNI 01- 3741-2002 dan hasil yang paling bagus adalah dengan berat arang aktif 15 gram dan dengan lama waktu pengadukan selama 80 menit. Dengan nilai angka asam sebesar 0,224 mgKOH/gram, bilangan peroksida sebesar 10 mg eq/gram, sedangkan untuk bilangan penyabunan yang memenuhi standar adalah dengan arang aktif 10 gram dan lama waktu pengadukan 40 menit yaitu sebesar 200,09 mg KOH/gram. Keywords : adsorpsi, minyak goreng bekas, arang aktif Abstract - This research conducted to investigate the ability of activated carbon from sawdust ulin wood for waste cooking oil adsorption and to get the best adsorption time from the used time range in this research. Activated carbon was gotten by carbonizing sawdust before activated it with 0.1 N ZnCl2. This activated carbon was used in adsorption waste cooking oil with weight variation of 5,10 and 15 gram that put into shaker for  40, 60 and 80 minute adsorption. After being filtered, this proceeded waste cooking oil would be analyzed in order to measure acid number, peroxide number and saponification number.As the result, the best dose for adsorption regarding SNI 01- 3741-2002 standard was 15 gram activated carbon in 80 minute adsorption which gave acid number was 0,224 mgKOH/gram, peroxide number was 10 mg eq/gram while the best dose to get saponification number that meet SNI 01- 3741-2002 standard was 10 gram in 40 minute adsorption which gave 200,09 mg KOH/gram. Keywords: adsorption, waste cooking oil, activated carbon


Fuel ◽  
2021 ◽  
pp. 122695
Author(s):  
Norshakirah Ahmad Rashidi ◽  
Elnida Mustapha ◽  
Yeow Yean Theng ◽  
Noor Azira Abdul Razak ◽  
Najihah Abdul Bar ◽  
...  

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