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V. Khandegar

Bio: V. Khandegar is an academic researcher from Indian Institute of Technology Delhi. The author has contributed to research in topics: Electrocoagulation & Effluent. The author has an hindex of 5, co-authored 5 publications receiving 601 citations.

Papers
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Journal ArticleDOI
TL;DR: The objective of the present manuscript is to review the potential of electrocoagulation for the treatment of industrial effluents, mainly removal of dyes from textile effluent.

616 citations

Journal ArticleDOI
TL;DR: In this article, the authors used different combinations of aluminum and iron electrodes in batch mode of operation for the treatment of distillery spent wash, and the results were analyzed in terms of chemical oxygen demand (COD) removal efficiency.

76 citations

Journal ArticleDOI
TL;DR: In this article, the effect of various parameters such as the pH of the solution, current density, interelectrode distance, agitation speed, solution conductivity, electrolysis time, retention time, and initial concentration of the dye in the solution was investigated.
Abstract: Electrochemical treatment of synthetic solution containing Acid Red 131 dye was studied by performing experiments in a batch mode of operation using aluminum electrode. The effect of various parameters, such as the pH of the solution, current density, interelectrode distance, agitation speed, solution conductivity, electrolysis time, retention time, and initial concentration of the dye in the solution, was investigated. The results were analyzed in terms of color removal efficiency (CRE) and the optimum values of the parameters were determined. The maximum CRE (98%) for a synthetic dye solution was obtained at the optimum conditions of current density of 0.0625 A cm−2 and a pH solution of 11 for an electrolysis time of 120 min. Electrochemical treatment of industrial effluent containing Reactive Black B, Orange 3R, and Yellow GR dyes was carried out at the optimum values of the parameters and a CRE of 93.5, 92, and 91.1% was obtained for the three dyes, respectively. Experiments were performed us...

43 citations

Journal ArticleDOI
TL;DR: In this paper, the colour removal efficiency of small-scale dyeing unit effluent containing Reactive Yellow 86, Indanthrene Blue RS, Basic GR 4 and ReactiveYellow 145 dyes was characterized for various parameters.
Abstract: Electrochemical treatment of small-scale dyeing unit effluent containing Reactive Yellow 86, Indanthrene Blue RS, Basic GR 4 and Reactive Yellow 145 dyes was carried out with aluminium electrodes in batch mode of operation. The effluent was characterized for various parameters. The experiments were performed for 120 min, keeping the inter-electrode distance at 3 cm with a current density of 0.0625 A/cm2; the colour removal efficiency was determined for each of the four dyes. A colour removal efficiency of >97% was obtained for each of the dyes for an electrolysis time of 120 min. Further experiments were performed using aluminium sulphate as chemical coagulant to compare the colour removal efficiencies obtained by electrocoagulation and chemical coagulation.

25 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of the number of holes, the diameter of the hole, and the configuration of the holes (square, triangular, and random pitch) on the color removal efficiency was investigated.
Abstract: Electrocoagulation is a versatile technique used for treating various types of industrial effluent. The material of the construction and shape of the electrodes are crucial in the electrocoagulation process. The effect of the electrode shape on the performance of the electrocoagulation has been studied by performing experiments for the removal of the dye from the synthetic dye solution using punched electrodes and the results have been evaluated in terms of color removal efficiency. The effect of the number of holes, the diameter of the hole, and the configuration of the holes (square, triangular, and random pitch of the holes) on the color removal efficiency was investigated. An increase in the color removal efficiency was obtained using the punched electrode compared with the plane electrode. The effect of the current source (direct and alternating current) on the performance of the electrocoagulation was studied and no significant effect of the current source on the performance of the electroco...

10 citations


Cited by
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Journal ArticleDOI
TL;DR: In this critical review, some of the most promising electrochemical tools for the treatment of wastewater contaminated by organic pollutants are discussed in detail and the critical assessment of the reactors that can be used to put these technologies into practice is devoted.
Abstract: Traditional physicochemical and biological techniques, as well as advanced oxidation processes (AOPs), are often inadequate, ineffective, or expensive for industrial water reclamation. Within this context, the electrochemical technologies have found a niche where they can become dominant in the near future, especially for the abatement of biorefractory substances. In this critical review, some of the most promising electrochemical tools for the treatment of wastewater contaminated by organic pollutants are discussed in detail with the following goals: (1) to present the fundamental aspects of the selected processes; (2) to discuss the effect of both the main operating parameters and the reactor design on their performance; (3) to critically evaluate their advantages and disadvantages; and (4) to forecast the prospect of their utilization on an applicable scale by identifying the key points to be further investigated. The review is focused on the direct electrochemical oxidation, the indirect electrochemical oxidation mediated by electrogenerated active chlorine, and the coupling between anodic and cathodic processes. The last part of the review is devoted to the critical assessment of the reactors that can be used to put these technologies into practice.

1,197 citations

Journal ArticleDOI
01 Feb 2017
TL;DR: A review of membrane filtration, ion exchange, ion-exchange, adsorption, chemical precipitation, nanotechnology treatments, electrochemical and advanced oxidation processes are discussed in this article.
Abstract: Heavy metals like arsenic, copper, cadmium, chromium, nickel, zinc, lead, and mercury are major pollutants of fresh water reservoirs because of their toxic, non-biodegradable, and persistent nature. The industrial growth is the major source of heavy metals introducing such pollutants into different segments of the environment including air, water, soil, and biosphere. Heavy metals are easily absorbed by fishes and vegetables due to their high solubility in the aquatic environments. Hence, they may accumulate in the human body by means of the food chain. Various methods have been developed and used for water and wastewater treatment to decrease heavy metal concentrations. These technologies include membrane filtration, ion-exchange, adsorption, chemical precipitation, nanotechnology treatments, electrochemical and advanced oxidation processes. In this review, the methods as well as their mechanisms and efficiency are discussed.

724 citations

Journal ArticleDOI
TL;DR: The objective of the present manuscript is to review the potential of electrocoagulation for the treatment of industrial effluents, mainly removal of dyes from textile effluent.

616 citations

Journal ArticleDOI
TL;DR: A comprehensive review of recent literature that has been dedicated to utilizing electrocoagulation for water treatment, focusing on current successes on specific applications in water and wastewater treatment, as well as potentials for future applications is offered.

537 citations

Journal ArticleDOI
TL;DR: The electrocoagulation (EC) process is an electrochemical means of introducing coagulants and removing suspended solids, colloidal material, and metals, as well as other dissolved solids from water and wastewaters as discussed by the authors.

429 citations