A large amount of raw nanomaterials is processed with the increasing demand of fishery products. Membrane technology and bioprocessing have been increasingly involved in fishery industry, particularly for the treatment of fishery wastes. Fishery nano-wastes including both solid and liquid contain high content of organic compound which may cause pollution to the environment. Membrane technology could recover valuable nano-compounds back from fishery nano-wastes, therefore not only will it reduce the risk of pollution but also improve economic benefit of fishery industry.
Comparing to other competing methods, membrane technology serves as a simple, large scale and mild method to achieve both high efficiency and maximum preservation of natural property of recovered compounds. A series of valuable biomolecules such as protein, enzymes, collagen and marine flavor could be recovered from fishery by products by membrane technology. Different membrane processes mostly microfiltration, ultrafiltration, reverse osmosis and nanofiltration have been employed followed by protein SDS gel electrophoresis at different temperatures, pH and ionic concentrations. These membrane processes can work individually or combined with other biochemical reactions to develop a hybrid multistage membrane process for the desirable recovery rate, high purity of recovered compound and development of new product. In addition to recovery of valuable compounds, membrane process has also been applied for treatment of both fish pond and fishing process water to achieve water recycle.