Production of Biodiesel by Transesterification Reaction of Waste Cooking Oil

Abstract

<jats:p>Waste cooking oils are an agro-food waste with adverse effects on the health of living organisms and the environment. The main objective of this work is to valorize waste cooking oil for the synthesis and physicochemical characterization of biodiesel. The method used is based on the transesterification reaction of the oils using methanol and a basic homogeneous catalyst. In this study we employ waste from refined palm oil used for frying doughnuts. After optimization a reaction time of 2 hours, KOH catalyst, and a molar ratio of 9:1 were selected to obtain a good quality biodiesel. Physicochemical characterization was performed on the biodiesel to obtain its density, viscosity, calorific value, acid number, saponification index and IR spectral features. The analysis shows that the biodiesel obtained after transesterification has physicochemical characteristics similar to those of diesel and is consistent with American standards.</jats:p>

Optimized preparation of activated carbon with high porosities based on puck shells ( Afrostyrax lepidophyllus ) by response surface methodology and physico-chemical characterization

“…They can be prepared from any material with a high carbon percentage and low percentage of inorganic matter [3,4]. Several studies sufficiently demonstrate the performance of ACs prepared from lignocellulosic materials such as rice husk [5][6][7], oil palm ash [8], karanj (Pongamiapinnata) fruit hulls [9], cola nut (Cola acuminata) shells [10], bitter kola (Garcinia kola) nut shells [11] and mixture of Ayous sawdust and Cucurbitaceae peelings [12], shea residue [13] and safou seeds [14]. The use of these precursors for the preparation of AC has a double advantage, firstly in the production of effective materials for water pollution control, and secondly in solving the problem of their storage in the environment and thus enhancing these agro-food residues.…”