Biomedical Engineering Reference
In-Depth Information
Chapter 6
M
EMBRANE
T
ECHNOLOGY IN THE
F
ISHERY
I
NDUSTRY
- A S
TATE OF THE
A
RT
Wirote Youravong
1,2,
*
and Zhen-Yu Li
2
1
Department of Food Technology, Faculty of Agro-Industry
2
Membrane Science and Technology Research Center
Prince of Songkla University, Hat Yai, 90112, Thailand
Abstract
A large amount of raw material is processed with the demand of fishery products. Membrane
technology and bioprocessing have increasingly involved in the fishery industry, particularly
the fishery waste utilization and the treatment of fishery waste water. A comprehensive review
on application of membrane technology in the fishery industry is addressed in this chapter.
Fishery wastes in forms of solid and liquid contain high content of organic compounds which
may cause the pollution to the environment. Membrane technology can recover valuable
compounds from these fishery wastes; therefore,
it not only reduces the risk of pollution but
also improves economical benefit of the fishery industry. Comparing with other competing
methods, membrane technology can serve as a mild temperature, simple and large-scaled
method to achieve both high efficiency and maximum preservation of natural properties of
recovered compounds. A series of valuable compounds such as protein, enzymes, collagen
and marine flavor could be recovered from fishery by-products by membrane technology.
Pressure-driven membrane processes which are microfiltration, ultrafiltration, reverse osmosis
and nanofiltration have been employed. These membrane processes could work individually
or be combined with other biochemical reactions to develop a hybrid multistage membrane
process or a membrane reactor for the desirable recovery rate, high purity of recovered
compounds and development of new products (e.g. bioactive peptides). In addition to
recovery of valuable compounds, membrane process has been also applied for treatment of
fish pond and fishing process water to achieve water recycle. In the future, more success of
membrane technology in the aspect of the fishery industry is to be expected.
*
E-mail address: wirote.y@psu.ac.th. Tel. 66-7428 6321, Fax. 66-7421 2889. Corresponding author's address: Dr.
Wirote Youravong. Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University,
Hat Yai 90112, Thailand.
