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Removal of Hexavalent Chromium using Adsorbent Made from Drumstick Seeds Activated Carbon (DSSAC)


Prof Dr K N Sheth , Geetanjali Institute of technical Studies, Udaipur; Tanvika M Patel, Faculty in Environmental Engineering Gujarat Technological University


DSSAC, Adsorption, Activation Temperature, Optimum Dose, Optimum Contact Time


Saragava seeds (Moringa olefera) have been considered as agro-base product, which are very easily available. It is called drumstick. It is known that they have carbon contents. Attempts have been made to produce activated carbon (DSSAC) from them in a laboratory. They have been then employed for adsorption of chromium from the wastewater and they were found efficient for adsorption of chromium from the wastewater. All the experimental studies were batch studies, carried out in conical flask shacked with mechanical shaker. The filtration was done using Whatman No. 41 filter paper and the optical density was measured using the colourimeter. The weighing was done in digital balance. The adsorbents were prepared by impregnation with zinc chloride, at five different activation temperatures, i.e.3000 C, 4000 C, 5000 C and 6000 C. In the adsorption study of chromium, the effect of initial concentration of chromium solution on adsorption was studied at 0.5 mg/L,1.0 mg/L,2.0 mg/L and 3.0mg/L. The adsorbent dosage of 25mg/50mL, 30mg/50 mL, 35mg/50 mL, 40mg/50mL and 50 mg/50mL were used to determine the optimum dose of the adsorbents for removal of chromium from the wastewater. By using these optimum doses, optimum time were determined for each initial concentration and for the adsorbents prepared at various activation temperatures. Maximum removal of chromium was observed for all the four adsorbents but at temperature 5000C the effect is more. A comparative studies were made to evaluate the performance of DSSAC with commercially available PAC and GAC. It was observed that almost more of chromium removal was observed for DSSAC than PAC. In some cases, the removal of chromium using GAC was found to be lower than that of DSSAC.

Other Details

Paper ID: IJSRDV5I40183
Published in: Volume : 5, Issue : 4
Publication Date: 01/07/2017
Page(s): 185-189

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