Biomedical Engineering Reference
In-Depth Information
Fig. 10.16
Chemical
productions from lignin
Benzene
Phenol
Fuel oil
ligin
Fuel gas
Original acid
Guaiacol
Catechol
(2) Imbalanced development of technology
The concept of comprehensive utilization of lignocellulose enables people to
gradually attach importance to the study of hemicellulose and lignin. Although
great progress has been achieved, there is a certain distance from the research and
development of cellulose technology. The complex structure of the lignin molecule
varies greatly with different sources of lignin, but it has broad application prospects
as an aromatic compound; it broadens the usable range of natural lignocellulosic
feedstock. Therefore, lignin deserves more attention.
(3) High cost of enzymolysis to conversion
There are many reasons for the high cost of enzymolysis to conversion, mainly
shown in the high cost of cellulose pretreatment, the low cellulase activity, and high
operating costs. With the development of science and technology, the problem of
high cost would be gradually resolved.
All analyses mentioned show the comprehensive utilization of lignocellulose will
be the application field of pulp manufacturers. Their aim is to improve the utilization
rate of raw materials to alleviate the serious air and water pollution problems. Only
pulp manufacturers may achieve full commercialization of biomass. At the same
time, the pollution problem is a typical characteristic of modern pulping technology.
Pulp suppliers will need new engineering technology for their processes, so the
pulp industry has the opportunity to become the supplier of chemical raw materials,
organic fertilizers, and protein feed.
The comprehensive utilization of lignocellulose would not be achieved in one
night in pulp production based on processing and utilization. But, when the
factories need to create or transform an old factory, the comprehensive utilization
of lignocellulose would play its proper role, so that the pulp manufacturer would
become the supplier of precursor chemicals [
27
].
