Valorization of durian peel as a carbon feedstock for a sustainable production of heterogeneous base catalyst,single cell oil and yeast-based biodiesel  

作　　者：Khanittha Fiala Apinya Thongjarad Ratanaporn Leesing 

机构地区：[1]Department of Biotechnology,Faculty of Technology,Khon Kaen University,Khon Kaen 40002,Thailand [2]Department of Microbiology,Faculty of Science,Khon Kaen University,Khon Kaen 40002,Thailand

出　　处：《Carbon Resources Conversion》2024年第3期51-65,共15页碳资源转化（英文）

基　　金：supported by the Program Management Unit for Human Resources&Institutional Development,Research and Innovation(Grant no.630000050102(15));The Genetic Conservation Project under The Royal Initiative of Her Royal Highness Princess Maha Chakri Sirindhorn,Khon Kaen University(Grant no.62000120010);Thailand.Additional support from the Research and Graduate Studies,Khon Kaen University,under the Research Program(Grant no.RP66-3-001)is appreciated.

摘　　要：The present study reports a successful attempt to produce single cell oil(SCO),heterogeneous base catalyst and yeast-based biodiesel from durian peel as a promising carbon feedstock by means of the waste-to-energy concept.For this purpose,first,durian peel(DP)was hydrolyzed by dilute sulfuric acid to obtain xylose-rich DP hydrolysate(XDPH)and post-hydrolysis DP solid residue(DPS).Candida viswanathii PSY8,a newly isolated oleaginous yeast,showed high SCO accumulation(5.1±0.1 g/L)and SCO content(35.3±0.13%)on undetoxified XDPH medium.A novel heterogeneous base catalyst(DPS-K)prepared from DPS by wet impregnation technique with KOH,exhibited considerable catalytic activity to convert SCO-rich wet yeast of C.viswanathii PSY8 into yeast-based biodiesel(FAME)via direct transesterification with a maximum FAME yield of 94.3%under optimal conditions(6 wt%catalyst,10:1 methanol to wet yeast ratio,75℃,and 2 h).Moreover,most of the yeast-based biodiesel properties obtained from the FAME profiles were correlated well with the biodiesel standards limit of Thai,ASTM D6751 and EN 14214.Additionally,the energy output of FAME produced about 37.5 MJ/kg was estimated.Thus,this present finding demonstrated the favorable strategy for sustainable and eco-friendly production of new generation biodiesel.

关 键 词：Durian peel Single cell oil Heterogeneous base catalyst Candida viswanathii PSY8 Yeast-based biodiesel 

分 类 号：TQ64[化学工程—精细化工]