Ethyl Levulinate Obtained from Lignocellulosic Waste Material with Previous Delignification by Ultrasonic-Assisted Technique

• 作者: Hugo Saldarriaga-Nore?a Jorge Ernesto Solá-Pérez Mario Murillo-Tovar
• 来源期刊: 农业化学和环境(英文)
• 学科: 医学
• 关键词: ETHYL Levulinate DELIGNIFICATION Wheat Straw Sugarcane BAGASSE Maguey BAGASSE
• 年，卷（期）: 2017,（1）
• 页码范围: 93-103
• 页数: 11页
• 分类号: R73

摘要

Ultrasound-assisted pretreatment under mild operating conditions has been investigated for intensification of delignification to facilitate the obtaining of ethyl levulinate from biomass. The effect of pH (2 - 12), temperature (30°C - 70°C) and pretreatment time (0 - 120 minutes) has been studied for different biomass samples. The most favorable conditions were basic pH, temperature of 70°C and pretreatment time of 2 h, obtaining values of delignification near 80 percent. The ethyl levulinate is obtained in microwave directly via from samples before and after delignification and analyzed for GC-MS. The results evidenced better yields for the delignified samples.