Biosorption of Chromium (II) Ion from Textile Effluent Using Watermelon Shell-Activated Carbon

Watermelon Shell, an agricultural waste, was employed for the adsorptive removal of chromium (II) ion Cr 2+ from textile effluent. This study analysed adsorbent's active sites and morphological structures using FT-IR, SEM, XRD, XRF. The independent variables' effect, contact time, adsorbent dosage, pH were predicted Response Surface Methodology (RSM) adsorption onto Shell Activated Carbon (WSAC). experimental results indicated that NaOH activation effectively improved WSAC's capacity. maximum capacity 54.53 %, with dosage 0.6 g/l, 6.0, agitation time 40 min. high correlation coefficient (R 2 =0.978) between model data showed effluent efficiently.