“…Some adsorbents which have been widely used for water purification are activated carbon [24][25][26][27][28][29][30][31], silica gel [32][33][34][35][36], zeolite [37][38][39][40][41][42][43], clay minerals [44][45][46][47]. However due to their high generation costs, researchers shifted their focus to the use of dead biomass and waste such as peanut shell [48], garden grass [49], ground coffee [50], saw dust [51][52], sunflower leaves [53], egg shells [54], almond shell [55] sugarcane bagasse [56], Anabaena sphaerica [57], Bacillus laterosporus [58], green algae [59], orange peel [60], pine cone [61], guava leaf [62] for the removal of dyes, metals and organic pollutants from wastewater.…”