Bharat A. Bhanvase

Bio: Bharat A. Bhanvase is an academic researcher from Rashtrasant Tukadoji Maharaj Nagpur University. The author has contributed to research in topics: Nanofluid & Nanocomposite. The author has an hindex of 29, co-authored 135 publications receiving 2810 citations. Previous affiliations of Bharat A. Bhanvase include Vishwakarma Institute of Technology & Laxminarayan Institute of Technology.

Nanomaterials-based advanced oxidation processes for wastewater treatment: A review

Abstract: Over the past decades, advanced oxidation processes (AOPs) for wastewater treatment drawn a great deal of attention of the researchers. AOP’s are one of the promising advanced technologies to destroy the total organic content, toxic pollutants etc. from the wastewater. A number of attempts has been made from the past two decades on the waste water treatment using various advanced oxidation treatment techniques. The main objective of this review article is to provide the quick reference for researchers and academicians in the area of wastewater treatment using nanomaterials in conjunction with various AOPs and/or hybrid AOPs. This review article is mainly focused on (1) the nanomaterials-based individual and hybrid AOPs for treatment of various industrial effluents or model effluents, (2) the current status of work in the area of hybrid nanomaterials as heterogeneous catalysts combined with AOPs and hybrid advanced oxidation processes.

A review on graphene–TiO2 and doped graphene–TiO2 nanocomposite photocatalyst for water and wastewater treatment

Abstract: TiO2 is a more effective photocatalyst for the photocatalytic degradation of organic pollutants. However it shows more reactivity under UV light and around 5% of solar spectrum contains UV radiations. A new approach for the degradation of pollutants present in wastewater is suggested by making use of nanocomposite photocatalysts. The technique has potential for the treatment of wastewater because of the use of doped graphene-based nanocomposite photocatalysts. Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice. Furthermore, graphene has high electron mobility and therefore it will supress the recombination of the electron-hole pair formed which in turn improves the effectiveness of the graphene-TiO2 photocatalyst. In addition, development of doped graphene-TiO2 photocatalyst will be useful as it can be effective for the degradation of pollutants in the visible sunlight. Recently, there has been an increase in interest in the ...

CdS-Based photocatalysts

Abstract: To solve the problem of the global energy shortage and the pollution of the environment, in recent years, semiconductor photocatalytic technology that converts solar energy into chemical fuel has been widely studied. Regarding semiconductor-based photocatalysts, CdS has attracted extensive attention due to its relatively narrow bandgap for visible-light response and sufficiently negative potential of the conduction band edge for the reduction of protons. Studies have shown that CdS-based photocatalysts possess excellent photocatalytic performance in terms of solar-fuel generation and environmental purification. This critical review presents the recent advances and progress in the design and synthesis of various CdS and CdS-based photocatalysts. The basic physical and chemical properties of CdS and the related growth mechanism have been briefly summarized. Moreover, the applications of CdS-based photocatalysts have been discussed such as in photocatalytic hydrogen production, reduction of CO2 to hydrocarbon fuels and degradation of pollutants. Finally, a brief perspective on the challenges and future directions for the development of CdS and CdS-based photocatalysts are also presented.

A Benchmark Study on the Thermal Conductivity of Nanofluids

Abstract: This article reports on the International Nanofluid Property Benchmark Exercise, or INPBE, in which the thermal conductivity of identical samples of colloidally stable dispersions of nanoparticles or “nanofluids,” was measured by over 30 organizations worldwide, using a variety of experimental approaches, including the transient hot wire method, steady-state methods, and optical methods. The nanofluids tested in the exercise were comprised of aqueous and nonaqueous basefluids, metal and metal oxide particles, near-spherical and elongated particles, at low and high particle concentrations. The data analysis reveals that the data from most organizations lie within a relatively narrow band (±10% or less) about the sample average with only few outliers. The thermal conductivity of the nanofluids was found to increase with particle concentration and aspect ratio, as expected from classical theory. There are (small) systematic differences in the absolute values of the nanofluid thermal conductivity among the various experimental approaches; however, such differences tend to disappear when the data are normalized to the measured thermal conductivity of the basefluid. The effective medium theory developed for dispersed particles by Maxwell in 1881 and recently generalized by Nan et al. [J. Appl. Phys. 81, 6692 (1997)], was found to be in good agreement with the experimental data, suggesting that no anomalous enhancement of thermal conductivity was achieved in the nanofluids tested in this exercise.