This search deals with application of a new non-conventional biomaterial waste, unripe grape juice (Verjuice) waste for basic dye removal from aqueous solutions. It was found that the introduced bioadsorbent is very suitable for uptake of cationic dyes from aqueous solutions without needing to any pretreatment or chemical modifications. Adsorption experiments were conducted using column fixed bed system and the performance of the columns was investigated using breakthrough analysis. The effects of different system variables such as adsorbent dose, initial dye concentration, pH of solution and flow rate were studied. In order to find out the possibility of reuse, desorption study was also carried out in this investigation.
