Showing 1,241 - 1,260 results of 2,155 for search '"endotherms"', query time: 0.09s Refine Results
  1. 1241

    Self-Assembled Aminated and TEMPO Cellulose Nanofibers (Am/TEMPO-CNF) Aerogel for Adsorptive Removal of Oxytetracycline and Chloramphenicol Antibiotics from Water by Rabia Amen, Islam Elsayed, Gregory T. Schueneman, El Barbary Hassan

    Published 2024-01-01
    “…Energetically, the adsorption was spontaneous and endothermic for both pollutants. In conclusion, the efficient removal rate and excellent reusability of Am/TEMPO-CNF indicate the strong potential of the adsorbent for antibiotics’ removal.…”
    Get full text
    Article
  2. 1242

    Preparation of Activated Carbon Derived from Jordanian Olive Cake and Functionalized with Cu/Cu<sub>2</sub>O/CuO for Adsorption of Phenolic Compounds from Olive Mill Wastewater by Muna Abu-Dalo, Jehad Abdelnabi, Abeer Al Bawab

    Published 2021-11-01
    “…The adsorption reaction was found to be spontaneous and endothermic where ∆H° and ∆G° were found to be 30.104 kJ/mol and −1.765, −2.839, and −3.723 (kJ/mol) at 311, 302, and 293 K, respectively. …”
    Get full text
    Article
  3. 1243

    Chitosan biopolymer membranes produced from fishery waste for the adsorption-based removal of lead ions from aqueous systems by Ephraim Igberase, Mapula Lucey Moropeng, Mhike Washington

    Published 2023-07-01
    “…The adsorption process was discovered to be endothermic, with an adsorption enthalpy of 52 kJ/mol. …”
    Get full text
    Article
  4. 1244

    Removal of Safranin-T and Toluidine from Water through Gum Arabic/Acrylamide Hydrogel by Salma Jabeen, Sultan Alam, Luqman Ali Shah, Muhammad Zahoor, Najeeb Ur Rahman, Farhat Ali Khan, Riaz Ullah, Essam A. Ali, H. C. Ananda Murthy, Aamir Sohail

    Published 2022-01-01
    “…The adsorption isotherm and kinetics were better explained by the Langmuir isotherm and pseudo-second-order kinetic model whereas the adsorption thermodynamics depicted the endothermic, spontaneous, and favorable nature of the process. …”
    Get full text
    Article
  5. 1245

    Physicochemical, Thermal, and Morphological Properties of Chitosan Nanoparticles Produced by Ionic Gelation by Elham Alehosseini, Hoda Shahiri Tabarestani, Mohammad Saeed Kharazmi, Seid Mahdi Jafari

    Published 2022-11-01
    “…The DSC thermogram of CSNPs showed a double sharp endothermic peak at about 74.5 °C (ΔH = 122.00 J/g); further, the TGA thermograms indicated the total weight loss of STPP, CS, and CSNPs as nearly 3.30%, 63.60%, and 52.00%, respectively. …”
    Get full text
    Article
  6. 1246
  7. 1247

    Removal of Diazo Dye Direct Red 28 and Tetra Azo Dye Direct Black 22 Using Synthesized Magnetic Kaolin Supported Zinc Ferrite by Serap Findik

    Published 2022-06-01
    “…It was found that adsorption of DR-28 on KZF was exothermic while that of DB-22 was endothermic. The enthalpy changes (ΔH0) for the adsorption of DR-28 and DB-22 dyes on KZF were found to be -24.59 kJ/mol and 61.95 kJ/mol respectively. …”
    Get full text
    Article
  8. 1248

    Adsorption of hexavalent chromium by activated carbon obtained from a waste lignocellulosic material ( cores): Kinetic, equilibrium, and thermodynamic study by Radia Labied, Oumessaad Benturki, Adh’ Ya Eddine Hamitouche, André Donnot

    Published 2018-05-01
    “…Thermodynamic studies showed that the adsorption of Cr(VI) onto activated carbon was feasible, spontaneous, and endothermic at 20–40°C. This novel Z. jujuba rubidium carbonate-activated carbon derived from Z. jujuba core has been found to be effective for the removal of Cr(VI) and not harmful to the ecosystem.…”
    Get full text
    Article
  9. 1249

    Decarbonising the Portland and Other Cements—Via Simultaneous Feedstock Recycling and Carbon Conversions Sans External Catalysts by Sheila Devasahayam

    Published 2021-07-01
    “…The reaction intermediates of calcination reactions (calcium carbonate–calcium oxide or magnesium carbonate–magnesium oxide systems) can facilitate the endothermic carbon conversion reactions to syngas or hydrogen acting as non-soot forming catalysts. …”
    Get full text
    Article
  10. 1250

    Enhancing the solubility and dissolution rate of piperine via preparation of piperine–hydroxypropyl methylcellulose 2910 solid dispersion system using freeze-drying method by Lili Fitriani, Swari Tirtania, Salman Umar, Erizal Zaini

    Published 2024-01-01
    “…Results: The solid dispersion characterization indicated a decrease in the melting points and endothermic peaks in the DSC analysis, a decrease in peak intensity in the PXRD patterns, no chemical interactions between active substances and polymers in the FTIR analysis, and significant morphological changes in the SEM analysis. …”
    Get full text
    Article
  11. 1251

    Black carbon derived PET plastic bottle waste and rice straw for sorption of Acid Red 27 dye: Machine learning approaches, kinetics, isotherm and thermodynamic studies. by Tapos Kumar Chakraborty, Lamia Tammim, Khandakar Rashedul Islam, Md Simoon Nice, Baytune Nahar Netema, Md Sozibur Rahman, Sujoy Sen, Samina Zaman, Gopal Chandra Ghosh, Asadullah Munna, Ahsan Habib, Khadiza Tul-Coubra, Himel Bosu, Monishanker Halder, Md Aliur Rahman

    Published 2023-01-01
    “…Thermodynamic study shows AR 27 adsorption is favourable, endothermic, and spontaneous. Environmental friendliness properties are confirmed by desorption studies and satisfactory results also attain from real wastewater experiments. …”
    Get full text
    Article
  12. 1252

    دراسة الخواص البنيوية والحرارية للفرايت – Co Zn باستخدام طريقتي IR و TG-DTA by إبراهيم علي, بدر الأعرج

    Published 2018-12-01
    “…Moreover, the thermal gravimetric and differential thermal analyses  TG-DTA reveal four principal endothermic peaks at 28, 130, 333 and 653 0C within temperature range 20 – 700 0C. …”
    Get full text
    Article
  13. 1253

    الدراسة الكيميائية البلورية للمركبات MIISn(OH)6 حيث MII= Zn, Fe, Cu, Ca by رياض طلي

    Published 2018-12-01
    “…The DTA curve demonstrates two endothermic effects and one exothermic effect for all products. …”
    Get full text
    Article
  14. 1254

    Optimization of the Ba+2 uptake in the formation process of hydrogels using central composite design: Kinetics and thermodynamic studies of malachite green removal by Ba-alginate p... by Mohsen Samimi, Sepideh Moeini

    Published 2020-12-01
    “…The thermodynamic parameters were also determined by the Gibbs free energy function, confirming that the adsorption process was spontaneous and accompanied by an endothermic reaction.…”
    Get full text
    Article
  15. 1255

    Improving adsorption performance of l-ascorbic acid from aqueous solution using magnetic rice husk as an adsorbent: experimental and RSM modeling by Azam Aslani, Hadiseh Masoumi, Hossein Ghanadzadeh Gilani, Ahad Ghaemi

    Published 2023-07-01
    “…The values of ΔHo and ΔSo were measured 31.972 kJ/mol and 120.253 kJ/mol K, respectively, which proves the endothermic and irregularity nature of the adsorption of AA. …”
    Get full text
    Article
  16. 1256

    Use of Anionic Surfactant-Modified Activated Carbon for Efficient Adsorptive Removal of Crystal Violet Dye by Rumi Goswami, Amit Kumar Dey

    Published 2022-01-01
    “…Thermodynamics studies revealed endothermicity of the process with negative ΔG values and positive ΔS and ΔH values. …”
    Get full text
    Article
  17. 1257

    Composite Activated Carbon Modified with AlCl<sub>3</sub> for the Effective Removal of Reactive Black 5 Dye from Wastewaters by Eleftheria K. Tsoutsa, Athanasia K. Tolkou, Ioannis A. Katsoyiannis, George Z. Kyzas

    Published 2023-05-01
    “…According to thermodynamics, it was found that the adsorption procedure was endothermic in nature (∆H<sup>0</sup> = 62.621 kJ/mol) and spontaneous (∆G<sup>0</sup> < 0), and according to the positive value of ∆S<sup>0</sup> 0.0293 (kJ/mol∙K), there is an increase in random interaction between solid and liquid interfaces. …”
    Get full text
    Article
  18. 1258

    Removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions by modified magnetic nanoparticles with amino functional groups by Reza Jazini Zadeh, Mohammad Sayadi, Mohammad Rezaei

    Published 2020-04-01
    “…Besides, thermodynamic studies have shown that the adsorption process in the present study is endothermic and spontaneous. The experiments showed that Fe3O4@SiO2-NH2 synthesized nanoparticles could be an excellent method to remove 2,4- Dichlorophenoxyacetic acid contaminants from the aqueous solutions due to the high efficiency, simplicity, and lack of secondary contamination in the solution.…”
    Get full text
    Article
  19. 1259

    Optimization of the Adsorption/Desorption Contribution from Metal-Organic-Heat-Carrier Nanoparticles in Waste Heat Recovery Applications: R245fa/MIL101 in Organic Rankine Cycles by Giovanna Cavazzini, Serena Bari

    Published 2022-02-01
    “…In comparison with standard nanoparticles, these MOHCs make it possible to extract additional heat from the endothermic enthalpy of desorption, with a theoretically high potential for boosting the heat transfer capacity of ORC systems. …”
    Get full text
    Article
  20. 1260

    In Situ Polyaniline Immobilized ZnO Nanorods for Efficient Adsorptive Detoxification of Cr (VI) from Aquatic System by Fahad A. Alharthi, Riyadh H. Alshammari, Imran Hasan

    Published 2023-05-01
    “…The adsorption process proved viable and endothermic thermodynamically, and best supported by a Langmuir model, suggesting a monolayer formation of Cr (VI) on the surface of ZnO@PAni NRs.…”
    Get full text
    Article