Author
Indumathi M. Nambi
Other affiliations: University of Illinois at Urbana–Champaign, Indian Institutes of Technology, Clarkson University
Bio: Indumathi M. Nambi is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Medicine & Chemistry. The author has an hindex of 21, co-authored 80 publications receiving 1777 citations. Previous affiliations of Indumathi M. Nambi include University of Illinois at Urbana–Champaign & Indian Institutes of Technology.
Papers published on a yearly basis
Papers
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TL;DR: In this paper, mathematical models describing the hydrodynamics of flow through the heterogeneous system were developed and coupled with a mass balance equation and a local equilibrium assumption (LEA) to quantify interphase mass transfer processes.
Abstract: Experiments quantifying rates of non–aqueous phase liquid (NAPL) dissolution from heterogeneous media are presented and compared with model simulations. This work specifically addresses the overall dissolution of NAPL entrapped in a coarse sand lens at a high saturation. To explore the mechanisms governing dissolution rates, mathematical models describing the hydrodynamics of flow through the heterogeneous system were developed and coupled with a mass balance equation and a local equilibrium assumption (LEA) to quantify interphase mass transfer processes. Variations in the effective permeabilities as a function of NAPL saturation and the intrinsic permeabilities of the sands were employed to characterize the hydrodynamic aspects of flow through the heterogeneous system. Relative to errors generated by the ill-defined aqueous phase relative permeabilities at high NAPL saturations, the model incorporating the system hydrodynamics as the sole rate-limiting process provided a reasonable first estimate of effluent concentrations. With the representative elemental volume defined here, rate-limited dissolution becomes important for low-NAPL saturations (Sn < ∼0.05–0.15) causing tailing in the observed dissolution data and deviations between these data and the LEA model.
90 citations
TL;DR: In this article, the authors conducted dissolution experiments in a two-dimensional cell with simple heterogeneous packing consisting of well-defined coarse lenses contaminated by NAPL surrounded by a clean fine sand matrix, and sufficient experimental conditions were tested to suggest three important mechanisms affect the overall mass transfer behavior in this heterogeneous system.
89 citations
TL;DR: Health risk assessment was conducted for exposure to PAHs in the ground water using incremental life time cancer risk (ILCR) models coupled with benzo[a]pyrene toxic equivalent method and showed that the cancer risk is predominantly contributed by dermal exposure than the oral in both adults and children.
84 citations
TL;DR: Field observations and laboratory data show that the seawalls and groins, which were installed along the Chennai shoreline to manage coastal erosion problems, played a significant role in controlling the oil deposition patterns, and the Chennai oil spill residues have unique fingerprints of hopanes and steranes which can be used to track the spill.
80 citations
TL;DR: Ferrocene functionalized graphene based graphite felt electrode was firstly investigated for heterogeneous electro-Fenton oxidation of ciprofloxacin in neutral pH condition and electrode reusability study was performed to understand the electrode stability.
70 citations
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01 Jan 1937
1,390 citations
TL;DR: Fluoride contamination in drinking water due to natural and anthropogenic activities has been recognized as one of the major problems worldwide imposing a serious threat to human health as mentioned in this paper, and it has been identified as a major problem worldwide.
914 citations
01 Jan 2004
TL;DR: In this paper, the effects of subinhibitory concentrations of antibiotics and disinfectants on environmental bacteria, especially with respect to resistance, are investigated and the impact on the frequency of resistance transfer by antibacterials present in the environment is questionable.
Abstract: Antibiotics, disinfectants and bacteria resistant to them have been detected in environmental compartments such as waste water, surface water, ground water, sediments and soils. Antibiotics are released into the environment after their use in medicine, veterinary medicine and their employment as growth promoters in animal husbandry, fish farming and other fields. There is increasing concern about the growing resistance of pathogenic bacteria in the environment, and their ecotoxic effects. Increasingly, antibiotic resistance is seen as an ecological problem. This includes both the ecology of resistance genes and that of the resistant bacteria themselves. Little is known about the effects of subinhibitory concentrations of antibiotics and disinfectants on environmental bacteria, especially with respect to resistance. According to the present state of our knowledge, the impact on the frequency of resistance transfer by antibacterials present in the environment is questionable. The input of resistant bacteria into the environment seems to be an important source of resistance in the environment. The possible impact of resistant bacteria on the environment is not yet known. Further research into these issues is warranted.
867 citations
TL;DR: This review article is aimed at providing precise information on efforts made by various researchers in the field of fluoride removal for drinking water by broadly divided in two sections dealing with membrane and adsorption techniques.
725 citations
01 Jan 2016
TL;DR: The wastewater engineering treatment disposal and reuse is universally compatible with any devices to read and an online access to it is set as public so you can download it instantly.
Abstract: wastewater engineering treatment disposal and reuse is available in our digital library an online access to it is set as public so you can download it instantly. Our books collection hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the wastewater engineering treatment disposal and reuse is universally compatible with any devices to read.
677 citations