Breakthrough time 2 Dyes 2 Fixed bed columns Adsorption 1 Adsorption ability 1 Agricultural robots 1 Agricultural wastes 1 Amines 1 Anionic dye 1 Bed height 1 Break through curve 1 Cationic surfactant 1 Cationic surfactants 1 Cationics 1 Citrus fruits 1 Environmental technology 1 Filters (for fluids) 1 Fixed bed column 1 Fruits 1 Initial concentration 1 Mengkuang leaves 1 Methylene blue dye 1 Methylene blue solution 1 Reactive Orange 16 1 Reactive Orange 16 dye 1 Reactive orange 16 dye 1 Scanning electron microscopy 1 Textile industry 1 Textile wastewater 1 Textiles 1