Removal of chromium ions from aqueous solution using dried peel of bitter orange powder was performed through batch studies. Various process parameters like pH, contact time, biomass dose, and metal concentration were studied to investigate the optimum conditions for removal percent and the maximum removal capacity of Cr (VI). The chromium ions concentration was determined using UV-VIS spectroscopy. High removal percent was achieved at optimum parameters determined as follows: solid particle size= 75µm, contact time= 120 min, shaking rate= 250 rpm, pH= 1.2 and chromium concentration Co= 100 g/l. Around 94% of chromium ion was eliminated from aqueous solution with maximum removal capacity of 23.49mg/g at these conditions.
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