Showing 1,641 - 1,660 results of 2,155 for search '"endotherms"', query time: 0.09s Refine Results
  1. 1641
  2. 1642

    Removal of fluoride in groundwater by adsorption using hydroxyapatite modified Corbula trigona shell powder by N'Zébo Sylvestre Yapo, Sadat Aw, Bi Gouessé Henri Briton, Patrick Drogui, Kouassi Benjamin Yao, Kopoin Adouby

    Published 2022-11-01
    “…The adsorption process was spontaneous, endothermic, and irreversible in nature. The best results with 89% fluoride removal were recorded at pH 7.5 ± 0.1 in 175 min with 5 g/L modified-CTSP. …”
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    Article
  3. 1643
  4. 1644
  5. 1645

    Rice Husk Research: From Environmental Pollutant to a Promising Source of Organo-Mineral Raw Materials by Baimakhan Satbaev, Svetlana Yefremova, Abdurassul Zharmenov, Askhat Kablanbekov, Sergey Yermishin, Nurgali Shalabaev, Arsen Satbaev, Vitaliy Khen

    Published 2021-07-01
    “…Three main peaks are recorded during the decomposition: hemicellulose at 200 °C, cellulose at 265 °C, and lignin at 350–360 °C. This process is endothermic. However, above of 300 °C the exothermic reactions associated with the formation of new substances and condensation processes in the solid residue begin to prevail. …”
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    Article
  6. 1646

    The Demonstration of the Superiority of the Dual Ni-Based Catalytic System for the Adjustment of the H<sub>2</sub>/CO Ratio in Syngas for Green Fuel Technologies by Suntorn Sangsong, Tanakorn Ratana, Sabaithip Tungkamani, Thana Sornchamni, Monrudee Phongaksorn, Eric Croiset

    Published 2020-09-01
    “…With the sequence of the catalysts located in the single reactor, the endothermic combined steam and CO<sub>2</sub> reforming of methane (CSCRM) reaction and the exothermic ultra-high-temperature water–gas shift (UHT-WGS) reaction work continuously. …”
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    Article
  7. 1647

    The simultaneous removal of cadmium (II) and lead (II) from wastewater with the application of green synthesized magnesium silicate hydrate by Zhang Qing, Zhang Qing, Liu Guijian, Liu Guijian, Peng Shuchuan, Zhou Chuncai, Zhou Chuncai

    Published 2023-01-01
    “…Cd(II) and Pb(II) adsorption were spontaneous and endothermic and well fitted with the pseudo-second-order kinetic and Langmuir isotherm adsorption models. …”
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    Article
  8. 1648

    Studies on Kinetics, Isotherms, Thermodynamics and Adsorption Mechanism of Methylene Blue by N and S Co-Doped Porous Carbon Spheres by Yongpeng Ren, Feng Chen, Kunming Pan, Yang Zhao, Lulu Ma, Shizhong Wei

    Published 2021-07-01
    “…The adsorption of MB by N,S-PCSs-1 was a spontaneous, endothermic, and random process based on the thermodynamics analyses. …”
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    Article
  9. 1649

    Ultrathin graphite sheets stabilized stearic acid as a composite phase change material for thermal energy storage by Li, Chuanchang, Xie, Baoshan, Chen, Deliang, Chen, Jian, Li, Wei, Chen, Zhongsheng, Gibb, Stuart W., Long, Yi

    Published 2021
    “…All samples had a good thermal stability below 180 °C, with the endothermic phase change peak being recorded between 53.60 and 53.12 °C range, and the melting and freezing enthalpies of SA/UGS-5000 were 113.7 and 112.9 J g−1, respectively. …”
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    Journal Article
  10. 1650
  11. 1651

    Kinetic and thermodynamic studies of the adsorption of heavy metals on to a new adsorbent: coal mine drainage sludge by Cui, M., Jang, M., Cho, S.H., Khim, J.

    Published 2010
    “…The positive values obtained for both the standard enthalpy change, Î0, and the standard entropy change, ÎS0, suggest that the adsorption of Cu(II) and Zn(II) on to the CMDS was an endothermic reaction and that randomness increased at the solid-liquid interface during the adsorption of Cu(II) and Zn(II) on to the CMDS. …”
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    Article
  12. 1652

    Chemical equilibrium and kinetic study of the esterification of pure and deluted acrylic acid with 2 ethyl hexanol catalysed by amberlyst 15 by Mohd Amirul Asyraf, Ahmad

    Published 2014
    “…The increase of equilibrium conversion with the temperature indicated the endothermicity of the reaction. Temperature was the most significant variable that affected the conversion and yield. …”
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    Thesis
  13. 1653

    Hydrogen production from CO2 reforming of methane over cobalt-based catalysts by Ji Siang, Tan

    Published 2015
    “…However, dry reforming is highly endothermic, and suffers from carbon-induced catalyst deactivation. …”
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    Undergraduates Project Papers
  14. 1654

    Novel Modified ZSM-5 as an Efficient Adsorbent for Methylene Blue Removal by Hamed, Atyaf Khalid, Dewayanto, Nugroho, Du, Dongyu, Mohd Hasbi, Ab. Rahim, Mohd Ridzuan, Nordin

    Published 2016
    “…Adsorption processes were endothermic with DH value 48.69 and 29.37 kJ mol�1 for NZVI/ZSM and NZVI/SuZSM, respectively. …”
    Article
  15. 1655

    Effect of different solvent system on oil extraction from immobilized microalgae cells of Chlorella vulgaris: kinetic and thermodynamic studies by Nagaarasan, Ramesh, Nur Hidayah, Mat Yasin

    Published 2021
    “…The thermodynamic parameters were calculated to be ΔH = 0.111 kJ/mol, positive values for ΔS, and negative values for ΔG for all conditions for the heptane system indicating the process was endothermic, irreversible, and thermodynamically spontaneous. …”
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    Conference or Workshop Item
  16. 1656

    Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution by Chuanen Guo, Yingying Wang, Fangzheng Wang, Yaoguang Wang

    Published 2021-09-01
    “…In addition, the thermodynamic investigations (Δ<i>G</i> < 0, Δ<i>H</i> > 0, Δ<i>S</i> > 0) demonstrated that the adsorption for Pb<sup>2+</sup> with the prepared adsorbent was endothermic and spontaneous. Moreover, the prepared adsorbent showed superior anti-interference performance and reusability, implying the potential application of the adsorbent in actual water treatment. …”
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    Article
  17. 1657

    Peningkatan Kelarutan Ketokonazol dengan Teknik Dispersi Padat Menggunakan Eudragit® E 100 by Angga Cipta Narsa

    Published 2012-12-01
    “…This result was also supported by spectrum of infrared and endothermic peak of differential scanning calorimetry. …”
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    Article
  18. 1658

    Synthesis and Application of MnO-Fe<sub>2</sub>O<sub>3</sub> Nanocomposites for the Removal of <sup>137</sup>Cs and <sup>60</sup>Co Radionuclides from Artificial Radioactive Aqueou... by Hosam M. Saleh, Hazem H. Mahmoud, Refaat F. Aglan, Mohamed M. Shehata

    Published 2023-11-01
    “…Moreover, a thermodynamic analysis revealed that the adsorption process was spontaneous for both target metals and the adsorption of <sup>60</sup>Co was endothermic, whereas the adsorption of <sup>137</sup>Cs was exothermic.…”
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    Article
  19. 1659

    Mechanism and performances of methyl orange and Congo red adsorption by MnO2–PVP composite by Afsar Khan, Muhammad Arif, Zhengwei Han, Yu Xie, Chenquan Ni

    Published 2024-03-01
    “…The thermodynamic investigations confirm that the dye adsorption process was endothermic in nature. HIGHLIGHTS The polyvinyl pyrrolidone (PVP)/MnO2 composite was synthesized by the solvothermal method.; The adsorption capacity of PVP/MnO2 was higher than plain metal oxide.; Detail adsorption mechanism was studied by kinetic models.; PVP/MnO2 could be used as a candidate in the water filtration assembly of dyes.; Detail characterization of the plain and composite metal oxides was performed…”
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    Article
  20. 1660

    Fat accumulation in striped hamsters (Cricetulus barabensis) reflects the temperature of prior cold acclimation by Kaiyuan Zhang, Jing Cao, Zhijun Zhao

    Published 2024-02-01
    “…Abstract Background Proper adjustments of metabolic thermogenesis play an important role in thermoregulation in endotherm to cope with cold and/or warm ambient temperatures, however its roles in energy balance and fat accumulation remain uncertain. …”
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    Article