Resource recovery from waste coffee grounds using ultrasonic-assisted technology for bioenergy production was written by Mofijur, M.;Kusumo, F.;Fattah, I. M. Rizwanul;Mahmudul, H. M.;Rasul, M. G.;Shamsuddin, A. H.;Mahlia, T. M. I.. And the article was included in Energies (Basel, Switzerland) in 2020.Synthetic Route of C20H40O2 The following contents are mentioned in the article:
Biodiesel is a proven alternative fuel that can serve as a substitute for petroleum diesel due to its renewability, non-toxicity, sulfur-free nature and superior lubricity. Waste-based non-edible oils are studied as potential biodiesel feedstocks owing to the focus on the valorisation of waste products. Instead of being treated as municipal waste, waste coffee grounds (WCG) can be utilized for oil extraction, thereby recovering an energy source in the form of biodiesel. This study evaluates oil extraction from WCG using ultrasonic and Soxhlet techniques, followed by biodiesel conversion using an ultrasonic-assisted transesterification process. It was found that n-hexane was the most effective solvent for the oil extraction process and ultrasonic-assisted technol. offers a 13.5% higher yield compared to the conventional Soxhlet extraction process. Solid-to-solvent ratio and extraction time of the oil extraction process from the dried waste coffee grounds (DWCG) after the brewing process was optimized using the response surface methodol. (RSM). The results showed that predicted yield of 17.75 weight % of coffee oil can be obtained using 1:30 w/v of the mass ratio of DWCG-ton-hexane and 34 min of extraction time when 32% amplitude was used. The model was verified by the experiment where 17.23 weight % yield of coffee oil was achieved when the extraction process was carried out under optimal conditions. The IR absorption spectrum anal. of WCG oil determined suitable functional groups for biodiesel conversion which was further treated using an ultrasonic-assisted transesterification process to successfully convert to biodiesel. This study involved multiple reactions and reactants, such as Methyl nonadecanoate (cas: 1731-94-8Synthetic Route of C20H40O2).
Methyl nonadecanoate (cas: 1731-94-8) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Synthetic Route of C20H40O2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics