A Systematic Assessment Framework for Higher-Education Institutions

The multiple criteria of ranking, rating and accrediting the higher education institutions in India and across globe have become de facto lens for viewing the institutions. There is an increasing number of assessment systems carried down by multiple agencies, with the public policy emphasis on higher education institutions getting assessed, it is necessary to use a systematic and systemic framework that is comprehensive for assessment. For this purpose, the paper proposes an ontological framework for assessment of higher education institutions.  The ontology’s dimensions, sub-dimensions, and their constituent elements are derived from higher-education assessment systems that are well known globally and in India. The framework can help higher-education institutions: (a) assess themselves systemically and systematically; (b) highlight the bright, light, blind, and blank spots in their performance; and (c) correct their trajectory to fulfil their vision. Such framework would assist in identifying the gaps and pathways to improve their position in assessments.Anilkumar, M.; Singai, C.; Ramaprasad, A. (2020). A Systematic Assessment Framework for Higher-Education Institutions. En 6th International Conference on Higher Education Advances (HEAd'20). Editorial Universitat Politècnica de València. (30-05-2020):527-534. https://doi.org/10.4995/HEAd20.2020.11102OCS52753430-05-202

Effect of chloride and sulfate ions on the advanced photo Fenton and modified photo Fenton degradation process of Alizarin Red S

The degradation of Alizarin Red S (ARS) was carried out by heterogeneous advanced photo Fenton processes (HAPFP) of the type Fe0/H 2O2/UV and heterogeneous modified photo Fenton process (HMPFP) of the type Fe0/ammonium persulfate (APS)/UV. The influence of various reaction parameters like pH, catalyst loading, concentration of the oxidants and the influence of inorganic anions such as Chloride (Cl-) and Sulfate (SO42-) ions on processes were investigated. Quenching of the hydroxyl radical by inorganic anions was confirmed by the decrease in the degradation rate constant for the HAPFP from 3.33 � 10-2 to 0.19 à 10-2 (for Cl- (1 M)) and 0.29 à 10-2 min-1 (for SO42- (1 M)). Similar decrease in rate constant for HMPFP is from 4.67 à 10 -2 to 0.41 à 10-2(for Cl- (1 M)) and 0.51 à 10-2 min-1 (for SO42- (1 M)) process. The combined effect of concentration of sulfate and chloride ions on the rate constant for the degradation of ARS with APS and H2O 2 as oxidants is investigated. The initial degradation mechanism involves the cleavage of a quinone group to catechol as detected by UV-visible and GC-MS analysis. © 2013 Elsevier B.V. All rights reserved

Effect of various inorganic anions on the degradation of Congo Red, a di azo dye, by the photo-assisted fenton process using zero-valent metallic iron as a catalyst

The present research focuses on the heterogeneous advanced photo-Fenton processes of the type Fe0/H2O2/UV and Fe0/ammonium persulfate (APS)/UV as a potential technique to degrade Congo Red (di azo dye). Both the oxidants H2O2 and APS showed comparable efficiencies on the iron surface for the mineralization of Congo Red (CR) under UV light. The influence of various reaction parameters like pH of the solution, catalyst loading, concentration of the oxidants (H2O2/APS), influence of hydroxyl radical scavenger and the concentration of the substrate dye molecules are investigated and the optimum conditions are reported. The influences of various inorganic anions that are commonly present in the industrial effluents are studied using the above processes. All the inorganic anions used shows inhibitive effect on the degradation rate. Inorganic anions like chloride (Cl!) and sulfate (SO2!) inhibit the degradation rate by forming complexes with Fe2+/Fe3+ ions in the solution and they also quench the generated hydroxyl radicals. Anions like nitrate (NO3!), carbonate (CO2!) and bicarbonate (HCO3!) suppress the degradation rate mainly by scavenging the generated hydroxyl radicals. Quinol, hydroquinone and naphthalene derivative were the major intermediates obtained during the mineralization process. The experiments were extended successfully to treat the industrial effluent containing CR dye. APS proved to be a better oxidant than H2O2 for treating the effluent. The present method is advantageous as it is a simple and cost-effective technique for the mineralization of non-biodegradable di azo dye. © 2009 Desalination Publications

The TiO2-graphene oxide-Hemin ternary hybrid composite material as an efficient heterogeneous catalyst for the degradation of organic contaminants

TiO2-Graphene Oxide-Hemin (TiO2/GO/Hemin) ternary composite hybrid material was prepared by the sol-gel method and used as a heterogeneous catalyst for the photocatalytic degradation of organic contaminants. The catalytic activity of GO-TiO2-Hemin was evaluated by the degradation of Rhodamine B (RhB) under the UV-visible light irradiation and in the presence of hydrogen peroxide. The ternary composite of (TiO2/GO/Hemin) shows an excellent activity over a wide pH range from 3 to 11 and also a stable catalytic activity after five recycles. The increase in the efficiency of TiO2-GO-Hemin-UV processes is attributed to the Fe2+ ions produced from the cleavage of stable iron complexes, which participate in the continuous cyclic process for the generation of hydroxyl radicals resulting from the heterogeneous photocatalytic reactions and the adsorption power of GO. Keywords: Photocatalysis, Advance oxidation processes (AOPs), Metal ligand charge transfer processes (MLCTs), Rhodamine

Photo degradation of Methyl Orange an azo dye by Advanced Fenton Process using zero valent metallic iron: Influence of various reaction parameters and its degradation mechanism

Advanced Fenton process (AFP) using zero valent metallic iron (ZVMI) is studied as a potential technique to degrade the azo dye in the aqueous medium. The influence of various reaction parameters like effect of iron dosage, concentration of H2O2/ammonium per sulfate (APS), initial dye concentration, effect of pH and the influence of radical scavenger are studied and optimum conditions are reported. The degradation rate decreased at higher iron dosages and also at higher oxidant concentrations due to the surface precipitation which deactivates the iron surface. The rate constant for the processes Fe0/UV and Fe0/APS/UV is twice compared to their respective Fe0/dark and Fe0/APS/dark processes. The rate constant for Fe0/H2O2/UV process is four times higher than Fe0/H2O2/dark process. The increase in the efficiency of Fe0/UV process is attributed to the cleavage of stable iron complexes which produces Fe2+ ions that participates in cyclic Fenton mechanism for the generation of hydroxyl radicals. The increase in the efficiency of Fe0/APS/UV or H2O2 compared to dark process is due to continuous generation of hydroxyl radicals and also due to the frequent photo reduction of Fe3+ ions to Fe2+ ions. Though H2O2 is a better oxidant than APS in all respects, but it is more susceptible to deactivation by hydroxyl radical scavengers. The decrease in the rate constant in the presence of hydroxyl radical scavenger is more for H2O2 than APS. Iron powder retains its recycling efficiency better in the presence of H2O2 than APS. The decrease in the degradation rate in the presence of APS as an oxidant is due to the fact that generation of free radicals on iron surface is slower compared to H2O2. Also, the excess acidity provided by APS retards the degradation rate as excess H+ ions acts as hydroxyl radical scavenger. The degradation of Methyl Orange (MO) using Fe0 is an acid driven process shows higher efficiency at pH 3. The efficiency of various processes for the de colorization of MO dye is of the following order: Fe0/H2O2/UV > Fe0/H2O2/dark >Fe0/APS/UV > Fe0/UV > Fe0/APS/dark > H2O2/UV � Fe0/dark > APS/UV. Dye resisted to degradation in the presence of oxidizing agent in dark. The degradation process was followed by UV-vis and GC-MS spectroscopic techniques. Based on the intermediates obtained probable degradation mechanism has been proposed. The result suggests that complete degradation of the dye was achieved in the presence of oxidizing agent when the system was amended with iron powder under UV light illumination. The concentration of Fe2+ ions leached at the end of the optimized degradation experiment is found to be 2.78 � 10-3 M. With optimization, the degradation using Fe0 can be effective way to treat azo dyes in aqueous solution. © 2008 Elsevier B.V. All rights reserved

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Not AvailableThe experiment was conducted in the Division of Floriculture and Medicinal crops, Indian Institute of Horticultural Research, Bengaluru, to study seed germination and evaluate the seedling performance. Among the different cross combinations, the seeds obtained from the cross IIHR-6 x Mexican Single recorded highest seed germination (72.00%) and the maximum number of days for germination was observed in the seeds obtained from Arka Nirantara x IIHR-6 (46.50 days) whereas the seeds of IIHR-6 x Arka Nirantara germinate the earliest (32.00 days). Arka Sugandhi x IIHR-6 seeds gave the maximum shoot length (16.40 cm) whereas IIHR-6 x Arka Nirantara seeds gave maximum root length (4.89 cm). Vigour index was the highest in the seeds obtained from the cross IIHR-6 x Mexican single (1242.14).Not Availabl