V.K. Saini
Indian Institute of Technology Roorkee
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Publication
Featured researches published by V.K. Saini.
Water Research | 2003
Vinod Kumar Gupta; C. K. Jain; Imran Ali; M. Sharma; V.K. Saini
The bagasse fly ash, an industrial solid waste of sugar industry, was used for the removal of cadmium and nickel from wastewater. As much as 90% removal of cadmium and nickel is possible in about 60 and 80 min, respectively, under the batch test conditions. Effect of various operating variables, viz., solution pH, adsorbent dose, adsorbate concentration, temperature, particle size, etc., on the removal of cadmium and nickel has been studied. Maximum adsorption of cadmium and nickel occurred at a concentration of 14 and 12 mg x l(-1) and at a pH value of 6.0 and 6.5, respectively. A dose of 10 g x l(-1) of adsorbent was sufficient for the optimum removal of both the metal ions. The material exhibits good adsorption capacity and the adsorption data follow the Langmuir model better then the Freundlich model. The adsorption of both the metal ions increased with increasing temperature indicating endothermic nature of the adsorption process. Isotherms have been used to determine thermodynamic parameters of the process, viz., free energy change, enthalpy change and entropy change.
International Journal of Environment and Pollution | 2006
Imran Ali; Vinod Kumar Gupta; V.K. Saini; Hassan Y. Aboul-Enein
A solid phase extraction (SPE) method was developed for phenol, 4-nitrophenol, 4-chlorophenol and 4-cyanophenol from the wastewater. The recoveries were 95%, 93%, 92% and 90% for phenol, 4-nitrophenol, 4-chlorophenol and 4-cyanophenol, respectively. The elution was carried out by methanol (1 mL) at 0.25 mL/min. flow rate. The optimisation of SPE was achieved by using different eluting solvents, pH of wastewater, flow rates and other factors. Validation of the developed methodology was carried out using Microsoft Excel program. Possible mechanisms were presented for SPE of phenols.
Water Research | 2007
Vinod K. Gupta; Imran Ali; V.K. Saini
Journal of Colloid and Interface Science | 2005
Vinod Kumar Gupta; V.K. Saini; Neeraj Jain
Journal of Colloid and Interface Science | 2006
Vinod K. Gupta; Arshi Rastogi; V.K. Saini; Neeraj Jain
Journal of Colloid and Interface Science | 2007
Vinod Kumar Gupta; Imran Ali; V.K. Saini
Industrial & Engineering Chemistry Research | 2005
Vinod Kumar Gupta; Imran Ali; V.K. Saini; Tom Van Gerven; Bart Van der Bruggen; Carlo Vandecasteele
Journal of Colloid and Interface Science | 2006
Vinod Kumar Gupta; Imran Ali; Suhas; V.K. Saini
Environmental Science & Technology | 2004
Vinod Kumar Gupta; Imran Ali; V.K. Saini
Journal of Colloid and Interface Science | 2006
Vinod Kumar Gupta; Dinesh Mohan; V.K. Saini