scholarly journals Study of calcined eggshell as potential catalyst for biodiesel formation using used cooking oil

2018 ◽  
Vol 16 (1) ◽  
pp. 1166-1175 ◽  
Author(s):  
Y.C. Wong ◽  
R.X. Ang
Keyword(s):  
Mass Spectrometry ◽  
Reaction Temperature ◽  
Cost Effective ◽  
Gas Chromatography Mass Spectrometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Optimum Result ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Eggshell Catalyst

AbstractEggshells were utilized as a cost effective catalyst to assist in biodiesel formation. Eggshells were calcined using different calcination conditions such as temperature and time. The eggshells underwent calcination under 1000 °C in which calcium carbonate was completely converted into calcium oxide under open air conditions. The calcined eggshell catalyst was characterized by X-ray diffraction (XRD). Then the eggshell derived CaO catalyst was subjected to transesterification of used cooking oil (UCO). The parametrics in the transesterification of used cooking oil such as a methanol to oil ratio, weight of catalyst and reaction temperature were evaluated. The optimum result exhibited a 4:1 methanol to oil ratio, 2wt % catalyst, and a 65 °C reaction temperature within two hours. Pure calcined CaO acted as the control of the experiment that was subject to the most optimum eggshell derived catalyst transesterification conditions. The catalytic activity for both the pure calcined CaO and the calcined eggshell derived catalyst were comparable. The biodiesel formation was identified by gas chromatography mass spectrometry (GC-MS).

scholarly journals The Production of Green Diesel Rich Pentadecane (C15) from Catalytic Hydrodeoxygenation of Waste Cooking Oil using Ni/Al2O3-ZrO2 and Ni/SiO2-ZrO2

2021 ◽  
Vol 17 (1) ◽  
pp. 135-145
Author(s):  
Momodou Salieu Sowe ◽  
Arda Rista Lestari ◽  
Eka Novitasari ◽  
Masruri Masruri ◽  
Siti Mariyah Ulfa
Keyword(s):  
Batch Reactor ◽  
Waste Cooking Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
X Ray Diffraction ◽  
Fuel Processing ◽  
Green Diesel ◽  
X Ray ◽  
Cooking Oil ◽  
Isotherm Adsorption ◽  
Adsorption Desorption

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). 

scholarly journals GLYCEROLYSIS USING KF/CAO-MGO CATALYST: OPTIMISATION AND REACTION KINETICS

2020 ◽  
Vol 82 (5) ◽  
Author(s):  
Luqman Buchori ◽  
Mohammad Djaeni ◽  
R. Ratnawati ◽  
Diah Susetyo Retnowati ◽  
H. Hadiyanto ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Gas Chromatography Mass Spectrometry ◽  
Optimum Conditions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Base Catalysts ◽  
Cooking Oil ◽  
Surface Method ◽  
Kinetics Of ◽  
Glycerolysis Reaction

Monoglycerides can be produced through glycerolysis using a heterogeneous catalyst. The purpose of this study is to analyse the optimum conditions for the production of monoglycerides from glycerol and cooking oil using KF/CaO-MgO base catalysts and to investigate the kinetics of the monoglyceride glycerolysis reaction. The response surface method (RSM) was used to determine the favourable conditions by varying the catalyst amount (X1) between 0.1, 0.2 and 0.3% (w/w); the reaction temperature (X2) between 210, 220 and 230°C and reaction time (X3) between 2, 3 and 4 hours. Gas chromatography-mass spectrometry (GC-MS) was used to determine the monoglycerides, while catalysts were characterised by X-ray diffraction (XRD) and the Brunauer-Emmett-Teller method (BET). The results showed that, among the three factors examined, temperature shows the most control over this glycerolysis reaction. The most favourable conditions are X1 = 0.19% (w/w), X2 = 208.37°C and X3 = 3.20 hours, which provide a monoglyceride yield of 41.58%. The constants for the reaction kinetics of the monoglyceride formation, k1 and k2 are 1.04189 and 0.88965 hour-1, respectively.

scholarly journals Synthesis of Sodium Zirconia as a Catalyst for Transesterification Reaction of Used Cooking Oil

2019 ◽  
Vol 17 (1) ◽  
pp. 44-51
Author(s):  
Niyar Candra Agustin ◽  
Ricka Prasdiantika
Keyword(s):  
Methyl Elaidate ◽  
Transesterification Reaction ◽  
Gas Chromatography Mass Spectrometry ◽  
Impregnation Method ◽  
X Ray ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Zirconia Catalyst ◽  
Naoh Solution ◽  
Ft Ir

Catalyst is one of factor that affect the results of the transesterification reaction. Catalyst has spesific properties that can only be used in certain reaction. In order to carry out the transesterification reaction a suitable catalyst is needed and has optimal performance. This research aims to synthesize sodium zirconia (Na2O/ZrO2) as a catalyst for transesterification reaction of used cooking oil into biodiesel and the effect of the concentration of NaOH solution on the zirconia catalyst (ZrO2). The sodium zirconia catalyst(Na2O/ZrO2) was synthesized by wet impregnation method by mixing ZrO2 and NaOH solution with variations in concentrations of 2, 4 and 6 M. Transesterification reaction is carried out with catalyst amount of 5%(w/w), with areaction time of 20 minutes, and by microwave heating at 400 watt microwave power. The comparison of oil molar with methanol was 1:15. Na2O/ZrO2 catalysts was characterized by Fourier Transform Infrared(FT-IR) Spectrophotometer, and X-Ray Diffractometer (XRD) and Scanning Electron Microscopy/Energy Dispersive X-ray (SEM/EDX). The resulting biodiesel was characterized by Gas Chromatography-Mass Spectrometry (GC-MS). Using Na2O/ZrO2 2 M catalysts produced the most biodiesel which was 85.5% (w/w). The formed biodiesel contained methyl palmitate (25,11%), methyl linoleate (10,87%), methyl elaidate (57,88%), and methyl stearate (6,14%). The characterization results showed that Na2O/ZrO2 as the transesterification used cooking oil catalyst was successfully synthesized.

Gas chromatography-mass spectrometry based profiling reveals six monoglycerides as markers of used cooking oil

Food Control ◽  
2019 ◽  
Vol 96 ◽  
pp. 494-498 ◽  
Author(s):  
Guodong Cao ◽  
Cheng Ding ◽  
Dongliang Ruan ◽  
Zhaobin Chen ◽  
Huiqin Wu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Cooking Oil ◽  
Used Cooking Oil ◽  
Chromatography Mass Spectrometry

scholarly journals Investigation of a novel pyrolusite particle electrode effects in the chlorine-containing wastewater

2018 ◽  
Vol 78 (7) ◽  
pp. 1427-1437
Author(s):  
Liang Hong ◽  
Qiu Yang ◽  
Zhao Liying ◽  
Chen Yingyan ◽  
Wang Bing
Keyword(s):  
Mass Spectrometry ◽  
Catalytic Activity ◽  
Phenolic Resin ◽  
Removal Rate ◽  
Three Dimensional ◽  
Electrode System ◽  
Gas Chromatography Mass Spectrometry ◽  
X Ray Diffraction ◽  
Plate Electrode ◽  
X Ray

Abstract Research on three-dimensional electrode system mainly focuses on the material of plate electrode and catalytic activity, and minimal attention is provided to particle electrode. Pyrolusite was prepared as a novel particle electrode with high active chlorine (ACl) yield. The particle electrode was characterised by scanning electrode microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence (XRF) and electrochemical properties. Results show that the intended pyrolusite particle electrode was prepared successfully. These pyrolusite particle electrodes were applied to degrade sulphonated phenolic resin in chlorine-containing wastewater and displayed an excellent catalytic activity. A total of 68.76 mg/L ACl was produced, and the CODCr removal rate was 49.55%. These results indicated that pyrolusite particle electrode is much more effective than the reference material, that is, granular activated carbon. Furthermore, the product of electrolytic process was characterised by gas chromatography-mass spectrometry (GC-MS) and ultraviolet visible spectrometry (UV-vis). The enhanced mechanism was proposed that the high degradation efficiency could be ascribed to the increase of ACl.

scholarly journals Bio-kerosene and Bio-gasoil from Coconut Oils via Hydrocracking Process over Ni-Fe/HZSM-5 Catalyst

2019 ◽  
Vol 14 (2) ◽  
pp. 309 ◽  
Author(s):  
Muhammad Al-Muttaqii ◽  
Firman Kurniawansyah ◽  
Danawati Hari Prajitno ◽  
Achmad Roesyadi
Keyword(s):  
Reaction Temperature ◽  
Batch Reactor ◽  
Coconut Oil ◽  
Liquid Hydrocarbon ◽  
Biofuel Production ◽  
Gas Chromatography Mass Spectrometry ◽  
Incipient Wetness Impregnation ◽  
Impregnation Method ◽  
X Ray Diffraction ◽  
X Ray

In this study, hydrocracking of coconut oil over Ni-Fe/HZSM-5 catalyst was carried out in a batch reactor under different reaction temperature. Coconut oil is proposed as one of the potential feedstock for biofuel production. The Ni-Fe/HZSM-5 catalyst was prepared by incipient wetness impregnation method. The characterization of Ni-Fe/HZSM-5 catalyst by X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDAX), and Brunauer-Emmett-Teller (BET). The chemical composition of biofuel was analyzed by Gas-Chromatography-Mass Spectrometry (GC-MS). The results from the GC-MS analysis showed that the hydrocracking reaction over 10 % (Ni-Fe)/HZSM-5 catalyst at temperature of 375 oC obtained the highest hydrocarbon content (contained 49.4% n-paraffin, 26.93 % isoparaffin, 3.58 % olefin) and the highest yield of bio-gasoil 38.6 % in the biofuel liquid hydrocarbon. Pentadecane (n-C15) and heptadecane (n-C17) were the most abundant hydrocarbon compounds in biofuel liquid hydrocarbon. Decarboxylation and/or decarbonylation was the dominant reaction pathways in this process. Based on the result, the reaction temperature had a significant effect on the distribution of biofuel composition and yield of biofuel from coconut oil. Copyright © 2019 BCREC Group. All rights reserved 

scholarly journals MINYAK KULIT JERUK PAKIS SEBAGAI ESSENTIAL OIL DALAM PEMBUATAN SABUN: EKSTRAKSI DAN KARAKTERISASI

Konversi ◽  
2014 ◽  
Vol 3 (2) ◽  
pp. 30
Author(s):  
Iryanti Fatyasari Nata ◽  
Yulia Nurul Ma'rifah ◽  
Herlina Herlina
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Orange Peel ◽  
Gas Chromatography Mass Spectrometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Water Distillation ◽  
Before And After ◽  
Orange Peel Oil ◽  
Soap Production

Abstrak- Kulit jeruk pakis (Citrus grandis) merupakan limbah yang dihasilkan dari kegiatan rumah tangga, industri dan pertanian. Dengan proses distilasi kulit jeruk pakis dapat diambil minyaknya sebagai citrus oil yang selanjutnya dapat dimanfaatkan sebagai bahan baku pembuatan sabun. Penelitian ini bertujuan untuk membandingkan rendemen dan mutu citrus oil dari bahan baku kulit jeruk pakis segar dan dikeringkan (40 oC, 6 jam) dengan metode water distillation. Massa kulit jeruk yang digunakan adalah 200, 300, 400 dan 500 gram diekstraksi selama 3 jam pada 100 °C. Rendemen minyak yang diperoleh untuk kulit jeruk pakis segar berturut-turut pada massa kulit jeruk 200, 300, 400 dan 500 gram ialah  0,888 %, 0,619%, 0,178% dan 0,239% sedangkan untuk kulit jeruk yang keringkan diperoleh rendemen berturut-turut 0,214%, 0,029%,0,074% dan 0,023%. Minyak yang dihasilkan dari kulit jeruk segar dan kering dianalisa dengan Gas Chromatography Mass Spectrometry (GCMS) mengandung 82,136% limonen. Kulit jeruk pakis sebelum dan sesudah diekstraksi dianalisa dengan Scanning Electro Microscopy (SEM) dan X-Ray Diffraction (XRD) menunjukkan bahwa struktur permukaan setelah ekstrasi menjadi rusak dan struktur kristalinnya tidak mengalami perubahan yang signifikan. Minyak yang dihasilkan selanjutnya direaksikan dengan NaOH 30% untuk menghasilkan sabun. Kadar pH sabun pada konsentrasi (w/v) 1%, 5% dan 10% dalam 100mL air berturut-turut sebesar 9, 10 dan 10 sedangkan kadar air dalam sabun yang diperoleh sebesar 37,25%. Kata Kunci: jeruk pakis, minyak kulit jeruk, water distillation, sabun Abstract- Pakis orange peel is one of wasted product from household, industry and agriculture activities. Pakis orange peel can be extracted by distillation as citrus oil. Furthermore, it can be used as essential oil in production of soap. The purposes of this research  is to compare yield and quality of citrus oil base on fresh and dried  pakis orange peel (40°C, 6 hours) by water distillation methode. The variation mass of orange peel was used  200, 300, 400 and 500 gram then was extracted  for 3 hours at 100°C. The yield of citrus oil from fresh pakis orange peel with weight 200, 300, 400 and 500 gram are 0,888%, 0,619%, 0,178% and 0,239%,  respectively. The dried pakis orange peel was produced citrus oil 0,214%, 0,029%, 0,074% and 0,023%, respectively. The citrus oilwas analyzed by Gas Chromatoghrapy Mass Spectrometry (GCMS) which was contained ca. 82,13% of limonene. Pakis orange peel before and after extraction analyzed with Scanning Electro Microscopy (SEM) and X-Ray Diffraction (XRD) were indicated the structure of surface area after extraction has become broken  and the sructure of crystalline structure was not significant changes. Furthermore, citrus oil obtained from extraction was reacted with 30% NaOH for soap production. The pH of soap at concentration 1%, 5% and 10% (w/v) in water  9, 10 and 10, respectively.  The water content in the soap about 37,25%. Keywords: pakis orange, orange peel oil, water distillation, soap

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