Pyrolytic characteristics of sweet potato vine

• Published in: Bioresource technology Vol. 192; pp. 799 - 801
• Main Authors: Wang, Tipeng, Dong, Xiaochen, Jin, Zaixing, Su, Wenjing, Ye, Xiaoning, Dong, Changqing, Lu, Qiang
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.09.2015
• Subjects: Carbohydrates - analysis; Cellulose - analysis; Furfural; Heating - methods; Ipomoea batatas - chemistry; Levoglucose; Plant Components, Aerial - chemistry; Plant Extracts - analysis; Py-GC/MS; Pyrolysis; Sweet potato vine; Pyrolysis; Furfural; Py-GC/MS; Sweet potato vine; Levoglucose
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2015.05.018

•Sweet potato vine has good pyrolysis selectivity for sugars, linear carbonyls and linear acids, linear ketones and furans.•At 350°C, acetic acid content reached the maximum 15.41wt.% in bio-oil.•At 400°C, levoglucose content reached the maximum 11.86wt.% in bio-oil.•At 500°C, furfural content reached the maximum 6.94wt.% in bio-oil. To utilized biomass for optimum application, sweet potato vine (SPV) was studied on its pyrolytic characteristics by TGA and Py-GC/MS analysis as a representative of biomass with low lignin content and high extractives content. Results indicated that lignin, cellulose, hemicellulose and extractives contents were 7.85wt.%, 33.01wt.%, 12.25wt.% and 37.12wt.%, respectively. In bio-oil, sugars content firstly increased from 8.76wt.% (350°C) to 13.97wt.% (400°C) and then decreased to 9.19wt.% (500°C); linear carbonyls and linear acids contents decreased from 16.58wt.% and 17.45wt.% to 5.26wt.% and 4.03wt.%, respectively; furans content increased from 7.10wt.% to 15.47wt.%. The content 11.86wt.% of levoglucose at 400°C, 15.41wt.% of acetic acid at 350°C and 6.94wt.% of furfural at 500°C suggested good pyrolysis selectivity of SPV.