文献类型：期刊文献

英文题名：Bioenergy from Food Wastes: Thermal Decomposition of Carbohydrates, Lipids, and Proteins

作者：Yang, Z.[1];Collins, J.[2];Kumar, A.[2];Bellmer, D.[2];Bowser, T.[2]

机构：[1]East China Univ Sci & Technol, Dept Chem Engn, Shanghai, Peoples R China;[2]Oklahoma State Univ, Dept Biosyst & Agr Engn, Stillwater, OK 74078 USA

年份：2018

卷号：61

期号：3

起止页码：797

外文期刊名：TRANSACTIONS OF THE ASABE

收录：;EI(收录号：20182905550317);WOS:【SCI-EXPANDED(收录号:WOS:000436494500002)】；

基金：We would like to acknowledge Madhura Sarkar and Kezhen Qian for helping with the TGA and Py-GC setup along with reaction kinetics and product analysis used in this study. This project was funded, in part, by the Oklahoma Agricultural Experiment Station.

语种：英文

外文关键词：Carbohydrate; Devolatilization; Food waste; Lipid; Protein; Py-GC/MS; Pyrolysis; Reaction kinetics; TGA

摘要：Food wastes differ in composition based on their sources and hence are difficult to use in gasification and pyrolysis technologies. The objectives of this study were to investigate the thermal devolatilization kinetics and pyrolysis products of three representative food components: lipids, carbohydrates, and protein. Devolatilization of carbohydrates and proteins occurred up to 600(degrees)C with a total weight loss of 90%. In particular, dextrose, sucrose, histidine, and phenylalanine exhibited a combined two-reaction decomposition scheme, whereas starch and valine exhibited a single-reaction scheme. Sucrose had a higher activation energy than dextrose as more energy was needed to cleave glyosidic linkages. Valine had the lowest activation energy (70.2 kJ mol(-1)) of all the protein model compounds due to its simple structure. However, the lipids primarily vaporized below 400(degrees)C and did not decompose. Pyrolysis products of carbohydrates were largely composed of furan and sugar-based compounds, whereas those of proteins varied depending on the type of protein. Because lipids mainly vaporized, only slight conversion (< 1%) into different lipid types and hydrocarbons was observed.