Search
458 articles for “concentration”
-
Synthesis, Crystal growth and Characterization of Lead acetate zinc (II)Sulphate Material
Abstract: Leadacetatezinc (II) Sulphate Crystal is synthesized by the addition of Leadacetate to Zinc sulphate in equimolar concentration (1:1ratio) to produce larger sized crystal but during the crystallization process a bulk of colourless precipitate was obtained and after filtration the crystals are formed in the filtrate after slow evaporation solution growth technique. Thus formed crystals from the filtrate is kept away and the precipitate formed during the crystallization process is characterized …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 1, 2023 · pp. 22–29 Read article
-
Investigation of Thrust Bearing High Temperature in Gas Turbine
Abstract: Gas turbines in electric power generation and various industrial applications has made remarkable improvement in the current scenario in terms of size, efficiency and prominence. In order to maintain the sustainability of high level performance and increased reliability of the gas turbine, it has become mandatory to carryout in depth diagnostic methods and frame maintenance plans. This paper mainly concentrates on the analysis of the repeated tripping of gas turbine …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 1–13 Read article
-
Electrochemical CO2 Reduction on Metal Electrodes
Abstract: Carbon dioxide is a probable carbon resource plentiful on earth. It is also a greenhouse gas with a rapidly increasing atmospheric concentration during the last two centuries. Carbon dioxide can be electrochemically reduced to useful products under mild conditions. However, the energy conversion efficiency is low that, may discourage practical application of CO2 reduction in the very near future. However, the significance of the CO2 reduction will be re-evaluated in …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 14–15 Read article
-
Comparative Studies on Production of Biodiesel from Waste Vegetable Oil (WVO) & Noctiluca Scintillans(NS)
Abstract: The world realized that the main source of energy from crude oil, which leads to the environmental concern and disappeared in few years. That’s how new resolutions are under study looking for alternate fuel to replace the fossil fuels. The research studies have been made in field, but none of which are on a large scale production locally in Oman. Based on scenario, Biomass (algae) can be produced to make …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 1, 2019 · pp. 23–36 Read article
-
Studies on the Kinetics of Thermal Decomposition of Copper Oxalate Mixed With Silver Oxalate
Abstract: The coprecipitates, Ag2Cu(C2O4)nH2O of varying composition [Ag = (1 and 2)%], have been synthesized and were characterized by means of IR, XRD, and SEM. The decomposition of the prepared oxalates was monitored by differential scanning calorimetry (DSC) and thermogravimetry (TG). The DSC studies reveal that the decompositions of the mixed oxalates were all complex exothermic processes with resemblance to the exothermic reaction of copper oxalate and ranges from 540 to …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 2, Issue 1, 2016 · pp. 1–11 Read article
-
The decomposition of tris-(oxalato)-manganate (III) complex ion as the reaction suitable for the laboratory practice on chemical kinetics
Abstract: The complex ion [Mn(C2O4)3]3- is very photosensitive and rapidly decomposes at the daylight even at ambient temperatures. Although the mechanism of this reaction is complicated, its kinetic equation obeys the pseudo-first order. In addition, the tris-(oxalate)-manganate ion has a low thermal stability, and the reaction of its decomposition is highly affected by temperature. This makes this reaction very suitable for demonstrating the laws of chemical kinetics to the students – …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 2, Issue 2, 2016 · pp. 1–10 Read article
-
EFFECT OF GLUCOSE ON PHYSICO-CHEMICAL PROPERTIES OF SOME SURFACTANT SOLUTIONS
Abstract: Physico-chemical and thermodynamic studies of some aqueous surfactant solutions were carried out by employing conductance and dye solubilization (UV-Vis absorption spectroscopy) techniques. From the above measurements, critical micelle concentration (CMC) and thermodynamic properties of micellization (ΔGomic , ΔHomic and ΔSomic) have been obtained for an anionic [Sodium dodecyl sulphate (SDS)],a cationic [hexadecyl trimethyl ammonium bromide, (HTAB)] and non ionic (Tween-20) surfactant solutions. Effect of mixing cosolute on CMC and thermodynamics …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 1–22 Read article
-
KINETICS AND MECHANISM OF OXIDATION OF MIXTURE OF OXALIC ACID AND ADIPIC ACID BY CHROMIC ACID IN PRESENCE OF HYDROCHLORIC ACID
Abstract: The kinetics of oxidation of mixture of oxalic acid and adipic acid by chromic acid in presence of hydrochloric has been studied. The products are succinic acid and carbon dioxide. The rate of oxidation increases with the increase in the concentration of HCl acid. kinetics of oxidation of mixture of oxalic acid and adipic acid by chromic acid shows first order reaction at 270 c, order of the reaction is …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 1, 2018 · pp. 23–27 Read article
-
Review of Reactive Extraction Process for Recovery of Pyruvic Acid
Abstract: Pyruvic acid having a molecular formula (C3H4O3) is an important alpha-keto-carboxylic acid. It is mainly manufactured by biotechnological routes or chemical synthesis. There are number of applications of pyruvic acid in the industrial sector such as chemical, food, cosmetic and agriculture sector. The main problem for the production of pyruvic acid from the fermentation broth is downstream processing. The number of techniques developed to recover this acid from their aqueous …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 4, Issue 2, 2018 · pp. 1–7 Read article
-
Kinetics of oxidation of mixture of oxalic acid and glutaric acid by chromic acid in presence of sodium chloride and potassium chloride
Abstract: Effect of Sodium Chloride and Potassium chloride on the co-oxidation of oxalic Acid and glutaric Acid by Chromic Acid has been studied. The products are carbonyl di carboxylic Acid and Carbon dioxide. The rate of oxidation decreases with the increase in the concentration of Sodium Chloride and Potassium Chloride. It is found that Potassium Chloride is the most effective in retarding the reaction rate comparison to Sodium Chloride. The order …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 4–8 Read article
-
Modelling and Simulation of a Bio-Fermenter for Ethanol Production
Abstract: Industrialization and world population are continuously increasing and this demands high energy. Ethanol is one of the leading bio-fuel in recent years. In this research, mathematical models were developed to monitor, predict and simulate the rate of production of ethanol from the fermentation process of corn. Increase in the ethanol production was observed within the range of 0 >D_S≤0.25 of solvent dilution rate with the optimum value of ethanol concentration …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 1, 2021 · pp. 39–50 Read article
-
Corrosion Protection of Copper Metal by Nanocoating in Nitrogen dioxide Environment
Abstract: Nitrogen dioxide is an acidic gas. It absorbs moisture to produce nitric acid. It creates corrosive medium for copper metal. It forms corrosion cell on the surface of copper and accelerate corrosion reactions. The corrosion cell formation is written as: Cu|Cu2+||H+|H2 thus corrosion reactions start and copper is oxidized into Cu2+surface and it is oxidized into Cu2+ whereas H+ ion is reduced into H2. Nitric acid environment copper exhibits galvanic, …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 1–11 Read article
-
Thermodynamic and Kinetic Characterization of Aluminum Corrosion and Inhibition Adsorption of Vernonia Amygdalina Fruit Extract IN 0.5N H2SO4
Abstract: Anti-corrosive efficacy of ethanolic extract of Vernonia amygdalina fruit extract on corrosion of aluminum in 0.5N H2SO4 acidic solution was explored by mass loss measurement at rise in temperature between 303-343 K for 24 hours immersion period. The I.E. (η%) has been noticed prominently high (62.92%) at concentration 0.45% at 303 K. An inhibitor adsorption on the surface aluminum have been found to be best fitted Langmuir adsorption isotherm. It …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 1, 2023 · pp. 20–27 Read article
-
Synthesis and Mechanistic Interpretation of Hydrolytic Dephosphorylation of Monoamidate of 2,4-dichloro aniline phosphate in Acid Media
Abstract: Synthesis of mono 2.4-dichloroanniline phosphate was carried out using POCl3 as phosphorylating reagent and the kinetic study of monoamidate of 2,4-dichloroaniline phosphate was conducted in an acidic medium ranging from 0.01 to 7.0 mol dm-3at a temperature of 50°C. A notable feature of the acid log rate profile was the presence of a rate maximum at 4.0 mol dm-3. The decrease in rate beyond 4.0 mol dm-3 can be explained …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 2, 2023 · pp. 26–30 Read article
-
Laws of Thermodynamics Challenge Greenhouse-Gas and CLIMATE- change Hypotheses
Abstract: The greenhouse-gas hypothesis (GGH), i.e., CO2 is the cause of global warming by ~1K from ~1950-2023, is popularly believed to be established scientific truth. It is generally assumed that heat emissions from global fuel combustion are, by comparison, negligible. An application of the Hess-Gibbs 1st law of thermodynamics, however, shows that the enthalpy (H) output from yearly fossil fuel consumption is seven times greater than the H- increase of hypothetical …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 9, Issue 1, 2023 · pp. 7–19 Read article
-
Evaluation of Challenges to Women Participation in the Nigeria Construction Industry
Abstract: Construction industry is a mobile industry which always has its production site wherever contract is given. Participation of women in the profession is not being encouraged as there male counterpart. This paper is to assess the barriers to women participation in the construction industry in Nigeria. The cause for this was reviewed through the consultation of literatures and the used of questionnaires. Some factors are identified as challenges and at …
Published in International Journal of Construction Engineering and Planning · Vol. 2, Issue 2, 2016 · pp. 5–13 Read article
-
Effect of Opening Shapes and Sizes on the Gravity Dam
Abstract: Design of gravity dams is an important issue in dam engineering. Opening in the dam plays a vital role in the failure of the gravity dam. In the present work finite element analysis of the gravity dam for different opening shapes and sizes are studied. Koyna dam is considered for the analysis. Study of stress concentration and deformation generated in the dam is conducted in the present work. Two different …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 2, 2017 · pp. 1–8 Read article
-
Study of the Effect of Water Retarding Concrete Admixtures on the Properties of Concrete
Abstract: Water retarding concrete admixtures and super plasticizer are extensively utilized to recover the structural and mechanical properties of fresh and hardened concrete. These admixtures are more regularly used in pre-stressed concrete, slim components with overfilled and densely filled reinforcement, beams and slabs pre-cast basics and long slender column. In current decades, marvelous success has been attained in the progression of chemical admixtures for Portland cement. Most efforts have concentrated on …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 10–14 Read article
-
Impact of Sugarcane Molasses on Compressive Strength and Workability
Abstract: Molasses used as admixture increase the workability, it is a by-product of sugar industry. In this study, mechanical property such as compressive strength and workability of concrete adding fly ash and sugarcane molasses has been investigated. Adding the molasses in concrete increase the compressive strength, delay the initial and final setting time, reduced the bleeding and segregation of concrete and decrease the W/C ratio. The compressive strength test results showed …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 1–5 Read article
-
Smog Eating Structure
Abstract: Air quality has deteriaoted significantly over the past two decades, today pollution is one of the largest risk factors contributing to the disease’s burden, Air pollution affects individual health of citizens, increases mortality and morbidity rates and contributes in climate changes. So, in this paper we have used titanium-dioxide-infused concrete, which can remove smog from air when exposed to sunlight and ultraviolet lights. This technology is based on particles of …
Published in International Journal of Construction Engineering and Planning · Vol. 7, Issue 2, 2021 · pp. 15–20 Read article