Showing 621 - 640 results of 2,155 for search '"endotherms"', query time: 0.08s Refine Results
  1. 621

    Simulation of Environmental and Furnace Working Parameters Effect on Gas Carburizing Surface Treatment by مدرسی, کاشفی, وحدتی خاکی

    Published 2009-11-01
    “…As a final point, by inputting the amount of generated gases in the endothermic gas generator (air to fuel ratio), furnace temperature, furnace internal pressure, ambient temperature and humidity in the programmed software, the percent of surface carbon on the steel part is calculated and the effect of the mentioned parameters on the surface carbon content can also be studied. …”
    Get full text
    Article
  2. 622

    Application of Three Types of Aminated Lignins for Efficient Removal of Cd(II) and Pb(II) Ions in Aqueous Solution by Ji Won Heo, Liangliang An, Jiansong Chen, Min Soo Kim, Sang-Deok Lee, Yong Sik Kim

    Published 2022-11-01
    “…Thermodynamic studies revealed that the adsorption processes of Cd(II) and Pb(II) using the ALs were spontaneous and endothermic. These results demonstrate that ALs are promising adsorbents for the removal of Cd(II) and Pb(II) metal ions.…”
    Get full text
    Article
  3. 623

    Biosorption of Cu2+ onto Biyological Waste Nitrification Organisms by Şükrü Aslan, Uğur Savaş Topçu

    Published 2020-01-01
    “…The results confirming that the biosorption reaction of Cu2+ on the DWNO was thought to be endothermic. A comparison of the kinetic models such as pseudo first and second-order kinetics, intraparticle diffusion, and Elovich on the sorption rate demonstrated that the system was best described by the pseudo second-order kinetic model. …”
    Get full text
    Article
  4. 624

    Adsorption of Heavy Metal Ions on Pomegranate () Peel: Removal and Recovery of Cr(VI) Ions from a Multi-metal Ion System by Rifaqat A.K. Rao, Fouzia Rehman

    Published 2010-03-01
    “…Thermodynamic parameters such as ΔH 0 , ΔS 0 and ΔG 0 were evaluated, the adsorption process being endothermic and spontaneous in nature. The value of the mean free energy indicated that the adsorption process was chemical in nature. …”
    Get full text
    Article
  5. 625

    Elimination of a cationic dye in aqueous solution by adsorption on activated carbon: Optimization of analytical parameters, modeling and thermodynamic study by Zahia Harrache, Moussa Abbas

    Published 2022-11-01
    “…The evaluation of thermodynamics parameters such as the Gibbs free energy ΔG° (−7.856 to −6.142 kJ/mol), positive enthalpy ΔH° (13.384 kJ/mol) and the change of entropy (63.46 J/mol K) indicated a spontaneous and endothermic nature of the reaction with a chemisorption process. …”
    Get full text
    Article
  6. 626

    Graphitic C3N4 incorporated chitosan-poly(vinyl alcohol) blend nanocomposites for the removal of Cu(II) and Cr(VI) ions from aqueous solutions by Shivapura Manchaiah Anush, Suchetha Naga Raju, Ballupet Honnapa Gayathri, Keresanthe Parameshwarappa Ajeya, Yarabahally Ravindranath Girish, Sanneerappa Darshan, Yelaware Puttaswamy Naveen, Kalappa Prashantha, Byrappa Krishnaiah Narendra, Aishwarya Jayaram

    Published 2024-01-01
    “…Through thermodynamic studies, it was revealed that the adsorption process was both endothermic and spontaneous in nature. Furthermore, desorption studies confirmed that the material could be regenerated, making it reusable. …”
    Get full text
    Article
  7. 627

    Uranium Isotope (U-232) Removal from Waters by Biochar Fibers: An Adsorption Study in the Sub-Picomolar Concentration Range by Maria Philippou, Ioannis Pashalidis, Charis R. Theocharis

    Published 2022-10-01
    “…The ionic strength and temperature effect indicate that the adsorption is based on the formation of inner-sphere complexes, and is an endothermic and entropy-driven process (ΔH° and ΔS° > 0), respectively. …”
    Get full text
    Article
  8. 628

    Synthesis and characterization of nanocomposites containing Buchholzia coriacea pod decorated with multi-walled carbon nanotubes for remediation of rhodamine B dye from aqueous sol... by James Friday Amaku, Raymond Taziwa

    Published 2023-11-01
    “…Thermodynamic parameters such as ∆G°, ∆H° and ∆S° reveal that the uptake of RhB onto WK and WKM was spontaneous and endothermic. Meanwhile, WKM demonstrated excellent reusability. …”
    Get full text
    Article
  9. 629

    NiTi<sub>2</sub>, a New Liquid Glass by Robert F. Tournier, Michael I. Ojovan

    Published 2023-10-01
    “…Many endothermic liquid–liquid transitions, occurring at a temperature T<sub>n+</sub> above the melting temperature T<sub>m</sub>, are related to previous exothermic transitions, occurring at a temperature T<sub>x</sub> after glass formation below T<sub>g</sub>, with or without attached crystallization and predicted by the nonclassical homogenous nucleation equation. …”
    Get full text
    Article
  10. 630

    New environmental friendly corrosion inhibitor of mild steel in hydrochloric acid solution: Adsorption and thermal studies by Taghried A. Salman, Qusay A. Jawad, Mohammed A. M. Hussain, Ahmed A. Al-Amiery, Lina M. Shaker, Abdul Amir H. Kadhum, Mohd S. Takriff

    Published 2020-01-01
    “…From the thermodynamic parameters, it was found that the conversion of thio form to mercapto form is spontaneous and endothermic.…”
    Get full text
    Article
  11. 631

    Eco-Friendly Synthesis of Copper Nanoparticles from Fiber of Trapa natans L. Shells and Their Impregnation Onto Polyamide-12 for Environmental Applications by Saleh Ahmed Aldahash, Shaziya Siddiqui, Mohammad Kashif Uddin

    Published 2023-08-01
    “…The adsorption process was endothermic, spontaneous, and physical. The rapid desorption of dye molecules confirms the potential, and practicality of the nanocomposite as a promising adsorbent for decolorizing colored wastewater on an industrial scale.…”
    Get full text
    Article
  12. 632

    Density Functional Theory (DFT) approach for kinetic and thermodynamic study of reaction mechanism of copper (II) complex from 2-hydrazinyl-4,5-dihydro-1h-imidazole and anthracene-... by Shola ELIJAH

    Published 2020-02-01
    “…The kinetics study shows that the reaction mechanism for the formation of copper (II) complex follows pseudo-first order and second order reaction with high correlation while the thermodynamic study indicates that the overall reaction is non-spontaneous and endothermic.…”
    Get full text
    Article
  13. 633

    Equilibrium Adsorption of Single Component and Binary Mixtures of Aromatic Compounds onto a Polyfunctional Hypercrosslinked Polymeric Adsorbent by Liu Fuqiang, Chen Jinlong, Li Aimin, Fei Zhenghao, Ge Junjie, Zhang Quanxing

    Published 2004-02-01
    “…The Freundlich model gave good fits to both the single and binary adsorption isotherms, indicating an endothermic and favourable adsorption process. The positive value of ΔH 0 for the single solute system was in the range of 30–60 kJ/mol showing the existence of integrated processes involving chemical interaction. …”
    Get full text
    Article
  14. 634

    A new robust regenerative turbo-reactor concept for clean hydrocarbon cracking by Rubini, D, Karefyllidis, N, Xu, L, Rosic, B, Johannesdahl, H

    Published 2022
    “…This paper offers an attractive solution to potentially decarbonise the cracking industry by direct renewable electrification whilst also improving the efficiency of energy transfer and enhancing the quality of the overall cracking process. Controlled endothermic cracking reactions are generated by direct mechanical energy transfer using a new electric-motor-driven turbo-reactor to replace the fossil-fuelled radiant unit in the conventional cracking plant. …”
    Journal article
  15. 635

    Adsorption of Nonylphenol to Multi-Walled Carbon Nanotubes: Kinetics and Isotherm Study by Yung-Dun Dai, Kinjal J Shah, C.P. Chin-pao Huang, Hyunook Kim

    Published 2018
    “…The thermodynamic analysis demonstrated the NP adsorption by MWCNTs was thermodynamically satisfactory and, for the most part, endothermic as in the case of phenol adsorption. The result of the current study demonstrated the significance of free binding sites and the pore size of MWCNTs in the NP adsorption. …”
    Get full text
    Article
  16. 636

    Equilibrium modeling, kinetic and thermodynamic studies on the adsorption of basic dye by low-cost adsorbent by Ahmad, A. A., Idris, Azni, Khalid Mahmoud, Dalia

    Published 2011
    “…The positive value of the enthalpy change (17.89 kJ/mol) indicates that the adsorption is endothermic process. The results indicate that petai seed adsorbent is suitable as adsorbent material for adsorption of MB dye from aqueous solutions.…”
    Get full text
    Article
  17. 637

    Corncob Modified By Cufe Layered For Oxytetracycline Removal From Aqueous Solution by Chandran, Dhiwakar

    Published 2022
    “…The thermodynamics of OTC-CCAC adsorption proves the endothermic nature as follows the effect of temperature study..…”
    Get full text
    Monograph
  18. 638

    Palm Shell Based Activated Carbon Modified By Cufe Layered For Amoxicillin Removal From Aqueous Solution by Lee, Xing Yii

    Published 2022
    “…Amoxicillin - PSAC adsorption system showed an endothermic nature.…”
    Get full text
    Monograph
  19. 639

    One-step ZnCl2/FeCl3 composites preparation of magnetic activated carbon for effective adsorption of rhodamine B dye by Lee, Lin Zhi, Ahmad Zaini, Muhammad Abbas

    Published 2022
    “…The adsorption of RB is an endothermic and spontaneous process. The activation energy of 24.1–28.9 kJ/mol indicates that the process is physisorption. …”
    Article
  20. 640

    Biosorption of mercury from aqueous solution and oilfield produced water by pristine and sulfur functionalized rice residues by Song, S. T., Saman, N., Johari, K., Mat, H.

    Published 2015
    “…The biosorption process was endothermic, feasible and spontaneous in nature. The biosorbents showed good selectivity towards Hg(II) biosorption from the oilfield produced water.…”
    Article