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Dive into the research topics where V.K. Saini is active.

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Featured researches published by V.K. Saini.


Water Research | 2003

Removal of cadmium and nickel from wastewater using bagasse fly ash—a sugar industry waste

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

Analysis of phenols in wastewater using capillary electrophoresis and solid phase extraction

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

Defluoridation of wastewaters using waste carbon slurry

Vinod K. Gupta; Imran Ali; V.K. Saini


Journal of Colloid and Interface Science | 2005

Adsorption of As(III) from aqueous solutions by iron oxide-coated sand

Vinod Kumar Gupta; V.K. Saini; Neeraj Jain


Journal of Colloid and Interface Science | 2006

Biosorption of copper(II) from aqueous solutions by Spirogyra species.

Vinod K. Gupta; Arshi Rastogi; V.K. Saini; Neeraj Jain


Journal of Colloid and Interface Science | 2007

Adsorption studies on the removal of Vertigo Blue 49 and Orange DNA13 from aqueous solutions using carbon slurry developed from a waste material.

Vinod Kumar Gupta; Imran Ali; V.K. Saini


Industrial & Engineering Chemistry Research | 2005

Removal of Dyes from Wastewater Using Bottom Ash

Vinod Kumar Gupta; Imran Ali; V.K. Saini; Tom Van Gerven; Bart Van der Bruggen; Carlo Vandecasteele


Journal of Colloid and Interface Science | 2006

Adsorption of 2,4-D and carbofuran pesticides using fertilizer and steel industry wastes.

Vinod Kumar Gupta; Imran Ali; Suhas; V.K. Saini


Environmental Science & Technology | 2004

Removal of Chlorophenols from Wastewater Using Red Mud: An Aluminum Industry Waste

Vinod Kumar Gupta; Imran Ali; V.K. Saini


Journal of Colloid and Interface Science | 2006

Studies on the interaction of some azo dyes (naphthol red-J and direct orange) with nontronite mineral

Vinod Kumar Gupta; Dinesh Mohan; V.K. Saini

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Vinod Kumar Gupta

University of Johannesburg

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Neeraj Jain

Central Building Research Institute

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Arshi Rastogi

Indian Institute of Technology Roorkee

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Shiva Agarwal

Indian Institute of Technology Roorkee

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Heinrich Lang

Chemnitz University of Technology

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Vinod K. Gupta

King Fahd University of Petroleum and Minerals

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Dinesh Mohan

Jawaharlal Nehru University

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M. Sharma

Indian Institute of Technology Roorkee

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