Yin & Deng (2015) conducted a research and analyzed that in different uses of water, the biggest challenge is actually the sustainment of adequacy of water resources. For solving this issue, expectations of treatment highly rely on gthe water treatment membrane in some regions such as reuse of wastewater and treatment, seawater and brackish desaliation, and treatment of drinking water. Membranes’ new class compromise of Nanocomposite membranes which are fabricated by mixing nanomaterials with polymeric materials.

        For tackling these issues, such membranes are becoming an efficient way. For meeting some specific applications concerned with water treatment, their physiochemical and structure could be modified i.e. thermal stability and charge density etc. According to the research conducted by the Yin & Deng (2015)it is analyzed that in our modern society it most challengeable task for securing the quality of water. in challenging part include: brackish and seawater desalination, wastewater treatment and its reuse [7].

There are two major groups of membranes of natural composite are:

1). Organic organic

2). Inorganic organic

        These types can be differentiating by using different fabrication technique. Organic-organic membranes further divided into thin-film and blends. Bi- or multilayer structure have thin-film composites. Thin-films composites are the combination of different polymers like separate polymers, grafted polymers and polymer blends. these blends may be reactive or non-reactive [7].    

        There are four main types of inorganic organic membrane. The arrangements of layers of inorganic and organic in bi or multilayer thin-film. Fabrication of the layer can be done by a film of ceramic and cellulose acetate. Fabrication of pan can be done by cellulose acetate and there is coating by silvernanoparticles. as silver nanoparticles which is antibacterial agent. Liquid membrane (polymer inclusion membrane) contains polymer and carrier. Cellulose acetate polymer is mostly used in the formation of these membranes. Which gives good stability to the membrane? there are three shapes of natural composite membranes: flat sheet, hollow fiber, and nano fibrous. Among all of these the most easily prepared is fat sheet because there is no use of high-pressure technologies there is only gravity flow. It has high permeability; large porosity and it also have better strength [7].

The main function of this natural polymer composite is the following:

1). Filtration

2). Absorption

3).Catalysis

4). Fouling

        This research summarize that there is too much advancement in scientific and technological in the field of nanocomposite membranes for the treatment of water. but there is lack of practical application of nano composite particles due to insufficient knowledge. There is more cost require in large scale application of nano composite particles. More work is needed to make it economical [7].

References OF Polymer-matrix nanocomposite membranes of Water treatment