COCONUT SHELL CHARCOAL, RICE HUSK ASH AND COCONUT FABRICS TURN ABLE TO DECREASE COLOR CONTENT IN DYING WASTE WATER

COCONUT SHELL CHARCOAL, RICE HUSK ASH AND COCONUT FABRICS TURN ABLE TO DECREASE COLOR CONTENT IN DYING WASTE WATER

By

Dr. Ni Made Susun parwanayoni (parwanayoni@unud.ac.id)

    Rice husk charcoal, coconut fiber and coconut shell charcoal, which is called by the term biomaterial is a biological material that has the ability mainly to adsorb dyes and also pollutants (heavy metals).  Research by Parwanayoni and Suriani (2011) shows that the treatment of rice husk charcoal, coconut fiber and coconut shell charcoal, is able to significantly reduce the color content of the dyeing wastewate.  Dyes and pollutants called adsorbates will be concentrated and accumulated in biological material or called adsorbents. This biological material will recover (recover) pollutants (dyes and heavy metals), so that it can be discarded and environmentally friendly or can be reused in the production process. The adsorption process can occur due to the presence of biological material (adsorbents) and the presence of solutions (dyes or pollutants) that have high affinity, so that it is easily bound to the adsorbent.  The process of absorption by biomaterials can occur physically and chemically. Physical adsorption can occur due to Vander Wall's force between molecules adsorbed and adsorbing. While chemical adsorption can occur due to the exchange or fusion of electrons between the adsorbent with the adsorbate. Adsorption can also occur because the adsorbate is trapped in the pores of the adsorbent (rice husk charcoal, coconut shell charcoal and coconut fibers).