Experimental study on biochar modified characteristics

DOI

10.2991/eesed-16.2017.58How to use a DOI?

Keywords

Biochar; Modified; Specific Surface Area; Aperture; Functional Groups

Abstract

With agricultural waste corn cob, corn straw and sawdust as raw material, utilizing limited oxygen pyrolysis (400,500,600,700øC) of biochar. By NaOH and microwave modification, respectively by element analysis, Boehm titration method and scanning electron microscopy (sem) characterization of the composition and structure of biochar. The results showed that the corn cob, corn straw and sawdust three biochar, the content of each element of microwave modification and pH were higher than in NaOH modification of biochar. Biochar by NaOH modification in the indexes of yield, aperture and alkaline groups compared with the unmodified biochar are promoted. 700 øC after microwave modified corn stover biochar than other biochar has a larger specific surface area (131.57 m2 / g) and the smallest aperture (2.08 nm). After modified with NaOH, biochar basic reactive than other method to get a total of 103.51%-418.37% improvement, lactone base number were similar, carboxyl amount 30.27% - 133.73% of the decline, reduce 1.77% - 35.56% of the total acid group.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yan-Ru Ma
AU  - Li-Ming Wang
AU  - Wen-Yang Sun
AU  - Kang Feng
AU  - Yang Lv
PY  - 2016/08
DA  - 2016/08
TI  - Experimental study on biochar modified characteristics
BT  - 2nd Annual International Conference on Energy, Environmental & Sustainable Ecosystem Development (EESED 2016)
PB  - Atlantis Press
SP  - 428
EP  - 433
SN  - 2352-5401
UR  - https://doi.org/10.2991/eesed-16.2017.58
DO  - 10.2991/eesed-16.2017.58
ID  - Ma2016/08
ER  -