Ultrasound-assisted alkaline pre-treatment and its sequential combination with microwave for fractionation of pistachio shell

Ozbek, Hatice; Yanik, DERYA; Fadiloglu, Sibel; Gogus, Fahrettin

doi:10.1016/j.renene.2020.05.085

Ultrasound-assisted alkaline pre-treatment and its sequential combination with microwave for fractionation of pistachio shell

Atıf İçin Kopyala

Ozbek H. N., Yanik D., Fadiloglu S., Gogus F.

RENEWABLE ENERGY, cilt.157, ss.637-646, 2020 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 157
Basım Tarihi: 2020
Doi Numarası: 10.1016/j.renene.2020.05.085
Dergi Adı: RENEWABLE ENERGY
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Compendex, Environment Index, Geobase, Greenfile, Index Islamicus, INSPEC, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
Sayfa Sayıları: ss.637-646
Eskişehir Osmangazi Üniversitesi Adresli: Hayır

Özet

Ultrasound-assisted alkaline pre-treatment (UAAP) and its sequential combination with microwave (SUMAAP) were performed for fractionation of pistachio shell and compared with conventional alkaline pre-treatment (CAP). The pre-treatment conditions were investigated and optimized using Box-Behnken design for maximum hemicellulose and cellulose recoveries. Under optimum conditions, the hemicellulose and cellulose recoveries were 57.67% and 94.05% for UAAP and 66.14% and 90.78% for SUMAAP, while these values were 16.28% and 98.70% after CAP, respectively. The compositional analysis showed that the xylo-oligosaccharides were the main components in liquid phases, while the solid phases were enriched in cellulose. Furthermore, a significant increase in enzymatic hydrolysis yield of pre-treated solids was obtained compared to the raw pistachio shell. Thus, the UAAP was proved to be a reliable and efficient process for pistachio shell pre-treatment and its sequential combination with microwave provide further increase in pre-treatment efficiency while reducing the processing time and alkali requirement. (C) 2020 Elsevier Ltd. All rights reserved.