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Simultaneous Adsorptive Removal of Cyanide and Phenol from Industrial Wastewater: Optimization of Process Parameters

Author Affiliations

  • 1Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, INDIA

Res.J.chem.sci., Volume 1, Issue (4), Pages 30-39, July,18 (2011)


Cyanide and phenol are found extensively in the effluents of refinery, coke plant, electroplating industries and are extremely dangerous to environment. Commercial granular activated carbon (GAC) was used as an adsorbent for the simultaneous removal of cyanide and phenol in the present study. The effect of process parameters such as pH, temperature (T), adsorbent dose (D) and contact time (t) on the performance of adsorption was investigated. Optimum pH was found to be 8 for simultaneous removal of cyanide and phenol. Temperature did not have any significant on cyanide removal, but phenol removal was observed to increase with the increase in temperature. Both compounds were optimally removed at 35 oC. The percentage removal of compounds increased with an increase in the concentration of GAC. However the specific uptake did not increase on GAC concentration’s greater than 30 g/L, which was considered as the optimum dose of adsorbent. Removal of cyanide was slightly higher than that of phenol, but the difference is not significant, at optimum conditions.


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