Even though AC exhibits great dye adsorption efficiency, usage of powdered activated carbon (PAC) in large-scale adsorption is limited due to the difficulty in separation and recovery via filtration or centri- fugation [16]. Granular activated carbon (GAC) is therefore commonly used in a continuous packed-bed adsorption column to remove con- taminants such as dye and colorants in wastewater or intermediate so- lutions and can be produced through granulation processes with or without binders [17]. Most biomass-derived GAC with irregular shapes could be produced from coconut shells or palm kernel shells due to their originally dense and hard structure. Other biomasses such as rice straw or sugar cane bagasse are fibrous and it is difficult to form granules without any pre- or post-processing.