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In present study a low cost biosorbent derived from Lagenaria vulgaris plant  by xanthation, was tested for its ability to remove copper from aqueous  solution. The effect of contact time, initial pH, initial concentration of  copper(II) ions and adsorbent dosage on the removal efficiency were studied  in a batch process mode. The optimal pH for investigated metal was 5. A  dosage of 4 g dm-3 of xanthated Lagenaria vulgaris biosorbent (xLVB) was  found to be effective for maximum uptake of copper(II). The kinetic of  sorption of metal was fast, reaching at equilibrium in 50 min. The kinetic  data were found to follow closely the pseudo-second-order model. The  adsorption equilibrium was described well by the Langmuir isotherm model with  maximum adsorption capacity of 23.18 mg g-1 copper(II) ions on xLVB. The  presence of sulfur groups on xLVB were identified by FTIR spectroscopic  study. Copper removal efficiency was achieved at 81.35% from copper plating  industry wastevater

hemijska industrija

Application of new biosorbent based on chemicaly modified Lagenaria vulgaris shell for the removal of copper(II) from aqueous solutions: Effects of operational parameters