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Bioresource and Agricultural Engineering
Technological University Dublin
Lignocellulose; biomass pretreatment; alkaline potassium permanganate; spent coffee waste; ultrasonication; reducing sugar
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Evaluation Of Ultrasound Assisted Potassium Permanganate Pre-Treatment Of Spent Coffee Waste, Rajeev Ravindran, Swarna Jaiswal, Nissreen Abu-Ghannam, Amit Jaiswal
Evaluation Of Ultrasound Assisted Potassium Permanganate Pre-Treatment Of Spent Coffee Waste, Rajeev Ravindran, Swarna Jaiswal, Nissreen Abu-Ghannam, Amit Jaiswal
Articles
In the present study, novel pre-treatment for spent coffee waste (SCW) has been proposed which utilises the superior oxidising capacity of alkaline KMnO4 assisted by ultra-sonication. The pre-treatment was conducted for different exposure times (10, 20, 30 and 40 min) using different concentrations of KMnO4 (1,2, 3, 4, 5% w/v) at room temperature with solid/liquid ratio of 1:10. Pretreating SCW with 4% KMnO4 and exposing it to ultrasound for 20 min resulted in 98% cellulose recovery and a maximum lignin removal of 46%. 1.7fold increase in reducing sugar yield was obtained after enzymatic hydrolysis of KMnO4 …