Biodiesel production from cotton oil using heterogeneous CaO catalysts from eggshells prepared at different calcination temperatures
| Autor: | Christiano Jorge Gomes Pinheiro, Luciano Menini, Luciene da Silva Castro, Audrei Giménez Barañano, Patrícia Fontes Pinheiro |
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| Rok vydání: | 2019 |
| Předmět: |
020209 energy
Health Toxicology and Mutagenesis General Chemical Engineering biodiesel 02 engineering and technology Industrial and Manufacturing Engineering Catalysis law.invention 020401 chemical engineering law 0202 electrical engineering electronic engineering information engineering Environmental Chemistry Calcination 0204 chemical engineering Eggshell calcination temperature QD1-999 Biodiesel Renewable Energy Sustainability and the Environment Chemistry eggshell Fuel Technology Chemical engineering Biodiesel production cotton oil |
| Zdroj: | Green Processing and Synthesis, Vol 8, Iss 1, Pp 235-244 (2019) |
| ISSN: | 2191-9550 |
| DOI: | 10.1515/gps-2018-0076 |
| Popis: | Biodiesel is a fuel from vegetable oil or animal fat, and is a promising substitute for petroleum-derived diesel. Transesterification is the most widely used method in biodiesel production. Eggshell is rich in calcium carbonate (CaCO3), and when it is subjected to heat treatment it results in calcium oxide (CaO). CaO from eggshells was prepared at different calcination temperatures, and characterized by X-ray diffraction, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM). The obtained CaO was used as a catalyst. All catalysts showed good stability and excellent morphology for biodiesel synthesis. Catalytic activity was evaluated by the methyl transesterification reaction of cotton oil for 3 h, 9:1 methanol:oil molar ratio, 3 wt% (catalyst/oil weight ratio) catalyst and 60°C. Biodiesels showed an ester content of 97.83%, 97.23% and 98.08%, obtained from calcined eggshell at 800°C, 900°C and 1000°C, respectively. Biodiesel quality was affected by the acidity of the cation exchange resin. The kinematic viscosity of biodiesel was in accordance with specification, except for the biodiesel obtained from the calcined catalyst at 1000°C. The CaO from eggshells obtained at different calcination temperatures is promising for biodiesel synthesis. |
| Databáze: | OpenAIRE |
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