Extraction and characterization of lignin from black liquor and preparation of biomass-based activated carbon therefrom

• 영문명: Extraction and characterization of lignin from black liquor and preparation of biomass-based activated carbon therefrom
• 발행기관: 한국탄소학회
• 저자명: Daeyeon Kim,Jinsil Cheon,Jeonghoon Kim,Daekyun Hwang,Ikpyo Hong,Oh Hyeong Kwon,Won Ho Park,Donghwan
• 간행물 정보: 『Carbon Letters』제22권, 81~88쪽, 전체 8쪽
• 주제분류: 자연과학 > 자연과학일반
• 파일형태: PDF
• 발행일자: 2017.04.01

영문 초록

In the present study, biomass-based lignin was extracted from industrial waste black liquor and the extracted lignin was characterized by means of attenuated total reflectance- Fourier transform infrared spectroscopy and 1H-nuclear magnetic resonance spectroscopy. The extracted lignin was carbonized at different temperatures and then activated with steam at 850oC. The extracted lignin in powder state was transformed into a bulky carbonized lignin due to possible fusion between the lignin particles occurring upon carbonization. The carbonized and then pulverized lignin exhibits brittle surfaces, the increased thermal stability, and the carbon assay with increasing the carbonization temperature. The scanning electron microscopic images and the Brunauer-Emmett-Teller result indicate that the steam-activated carbon has the specific surface area of 1718 m2/g, which is markedly greater than the carbonized lignin. This study reveals that biomassbased activated carbon with highly porous structure can be produced from costless black liquor via steam-activation process.

목차

1. Introduction

2. Experimental

3. Results and Discussion

4. Conclusions

References

키워드

black liquor,lignin,activated carbon,steam-activation,specific surface area