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Journal of Industrial and Environmental Chemistry
|
Volume 2
GREEN CHEMISTRY &
TECHNOLOGY
7
th
International Conference on
J u n e 1 8 - 2 0 , 2 0 1 8 | D u b l i n , I r e l a n d
Hao Fang, J Ind Environ Chem 2018, Volume 2 | DOI: 10.4066/2591-7331-C1-002
SINGLE CELL OIL PRODUCTION FROM
AGRICULTURAL WASTES AND ITS
CHEMICAL TRANSFORMATION FOR
PRODUCTION OF LONG CHAIN Α,Ω-
DICARBOXYLIC ACIDS
Hao Fang
Northwest A&F University, China
S
ingle cell oil (SCO) production from lignocelluloses by oleaginous
microorganisms is still high in production cost, making the subsequent
production of biofuels inviable economically in such an era of low oil
prices. Therefore, how to upgrade the final products of lignocellulose-
based bioprocess to more valuable ones is becoming a more and more
important issue. Differently sourced cellulases were compared in the
enzymatic hydrolysis of the steam-exploded corn stover (SECS) and the
cellulasefromthemixedcultureof
Trichodermareesei
and
Aspergillusniger
was found to have the highest enzymatic hydrolysis yield 86.67±4.06%.
Three-stages enzymatic hydrolysis could greatly improve the efficiency
of the enzymatic hydrolysis of SECS, achieving a yield of 74.24±2.69%
within 30 h. Different bioprocesses from SECS to SCO were compared
and the bioprocess C with the three-stages enzymatic hydrolysis was the
most efficient, producing 57.15 g dry cell biomass containing 31.80 g
SCO from 327.63 g SECS. An efficient and comprehensive process from
corn stover to long chain α,ω-dicarboxylic acids (DCAs) was established
by employing self-metathesis, capable of producing 6.02 g long chain
DCAs from 409.54 g corn stover and 6.02 g alkenes as by products. On-
site cellulase production by the mixed culture of
T. reesei
and
A. niger
is proven the most efficient in providing cellulase to the lignocellulose-
based bioprocess. Three-stages enzymatic hydrolysis was found to have
very good application value in SCO production by
Trichosporon cutaneum
from SECS. A whole process from corn stover to long chain DCAs via a
combination of biological and chemical approaches was successfully
established and it is an enlightening example of the comprehensive
utilization of agricultural wastes.
Hao Fang obtained his PhD degree in 2014 at
the Department of Biochemical Engineering,
Zhejiang University, China. Then, he joined Na-
tional Engineering Laboratory of Cereal Fermen-
tation Technology, Jiangnan University, China as
Senior Lecturer. In 2016, he moved to College of
Life Sciences, Northwest A&F University, China
as Associate Professor. His research interests
include Biochemical Engineering, Industrial
Microbiology and Biotechnology and Green
Bio-manufacturing. He has published more than
20 journal papers.
fanghao@nwafu.edu.cnBIOGRAPHY