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1281
Synthesis, Characterization and Investigation of Cross-Linked Chitosan/(MnFe<sub>2</sub>O<sub>4</sub>) Nanocomposite Adsorption Potential to Extract U(VI) and Th(IV)
Published 2022-12-01“…Adsorption isotherm of U(VI) at pH 3.0 by CCsMFO nanocomposite is an endothermic process. In contrast, the adsorption isotherm of Th(IV) at pH 3.0 by CCsMFO nanocomposite is an exothermic process. …”
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1282
Polyethylenimine-Crosslinked 3-Aminopropyltriethoxysilane-Grafted Multiwall Carbon Nanotubes for Efficient Adsorption of Reactive Yellow 2 from Water
Published 2023-02-01“…Thermodynamic studies revealed that the adsorption process was spontaneous and endothermic. Moreover, 0–0.1 mol/L of NaCl showed negligible effect on RY2 removal by PEI/APTES-MWCNTs. …”
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1283
Biosynthesis approach of copper nanoparticles, physicochemical characterization, cefixime wastewater treatment, and antibacterial activities
Published 2023-07-01“…Thermodynamic parameters also were derived as spontaneous chemisorption endothermic processes. Antibacterial activity of the Xim and Xim@Cu NPs was investigated confirming they are highly potent against each Gram-negative and Gram-positive bacterium.…”
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1284
Effects of Hydrothermal and Microwave Dual Treatment and Zein on the Enzymolysis of High Amylose Corn Starch
Published 2022-01-01“…The differential scanning calorimetry (DSC) results demonstrated that the composite displayed a new endothermic peak at 95.79 °C, while the weight loss rate and decomposition temperature were 7.61% and 2.39% lower than HACS, respectively. …”
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1285
Biosorption of Cr (III) from aqueous solution by the leaf biomass of <i>Calotropis procera – ‘Bom bom’</i>
Published 2011-04-01“…A positive value of enthalpy, H0 (26.099 kJmol-1) was obtained which indicated the endothermic nature of the biosorption process. FT-IR studies of the biosorbent before and after the biosorption process indicated that carboxylate, amino and nitro functional groups were involved in the sorption of Cr (III) onto Calotropis procera leaf biomass. …”
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1286
Exploration of cephalexin adsorption mechanisms onto bauxite and palygorskite and regeneration of spent adsorbents with cold plasma bubbling
Published 2024-02-01“…Thermodynamics revealed the endothermic and the spontaneous character of the process, indicating chemisorption as the main adsorption mechanism for both adsorbents. …”
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1287
Ultrahigh adsorption capacity of a new metal sieve-like structure nanocomposite-based chitosan-graphene oxide nanosheet coated with poly-o-toluidine for the removal of Acid Red dye...
Published 2023-12-01“…Thermodynamically, the removal process was endothermic, spontaneous, and associated with increasing randomness. …”
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1288
Experimental Investigation of Thermodynamics, Kinetics, and Equilibrium of Nickel Ion Removal from Wastewater Using Zinc Oxide Nanoparticles as the Adsorbent
Published 2020-07-01“…In addition, the calculated thermodynamic parameters, the standard Gibbs free energy ΔGo, the change in standard enthalpy ∆Ho and the standard entropy change ∆So showed that the adsorption of Ni (II) onto ZnO nanoparticles was feasible, endothermic and spontaneous respectively. The experimental results suggest that ZnO nanoparticles can be used as a potential adsorbent for the efficient removal of heavy metals from aqueous solutions than any other adsorbent because an economical and low- consumption energy due to its ambient operation conditions.…”
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1289
Chemical Modification of Teff Straw Biomass for Adsorptive Removal of Cr (VI) from Aqueous Solution: Characterization, Optimization, Kinetics, and Thermodynamic Aspects
Published 2022-01-01“…The investigated thermodynamic parameters (ΔHo, ΔSo, and ΔGo) confirmed that Cr (VI) metal ions’ adsorption process onto Teff straw biosorbent was spontaneous and endothermic.…”
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1290
Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications
Published 2023-03-01“…The adsorption of MG on both composites was endothermic. The isotherm and kinetic modeling data for MG adsorption on SBPEAC was fitted to pseudo-second-order kinetic and Langmuir isotherm models, while Elovich kinetic and D-R isotherm models were better fitted for MG adsorption on SBPE. …”
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1291
Experimental and Numerical Investigations on the Mixing Process of Supercritical Jet Injected into a Supersonic Crossflow
Published 2022-10-01“…The mixing process and distribution characteristics of a supercritical endothermic hydrocarbon fuel (EHF) jet injected into a supersonic crossflow were investigated by experimental and numerical methods, respectively. …”
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1292
Phosphorus-doped T-graphene nanocapsule toward O3 and SO2 gas sensing: a DFT and QTAIM analysis
Published 2024-02-01“…The adsorption of O3 is exothermic and spontaneous whereas the adsorption of SO2 is endothermic and non-spontaneous. The negative change in entropy verifies the thermodynamic stability of all the complexes. …”
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1293
Adsorption properties and mechanism of sepiolite to graphene oxide in aqueous solution
Published 2023-04-01“…The results showed that: 1) Under the conditions of temperature 303 K, pH = 3, adsorbent mass 30 mg, and initial concentration of GO 100 mg/L, the adsorption effect was the best, and the adsorption rate reached 94.8 %. 2) The adsorption reached equilibrium at 2160 min, and the adsorption process was more in line with the pseudo-second-order adsorption kinetic equation, and the adsorption behavior was controlled by chemical effects. 3) The adsorption of SEP to GO is more consistent with the Langmuir and Temkin adsorption isotherm model, and the reaction is a spontaneous, endothermic, and entropy-increasing process. Experiments showed that SEP had a strong adsorption capacity for GO, which provides a reference for the treatment of toxic GO in aqueous solution and the realization of water ecological protection.…”
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1294
Thermal Behavior of Water in Sephadex<sup>®</sup> G25 Gels at Low Temperatures Studied by Adiabatic Calorimetry
Published 2023-02-01“…A higher-temperature glass transition due to the water trapped by the polymer network was not so clear, as it was overlapped with an endotherm due to the melting of small ice crystals, which indicates that the ice crystals formed have a broad size-distribution and that water in the gel is vitrified when ice crystals of even the smallest size cannot be formed.…”
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1295
Application of Piszkiewicz model on the electron transfer reaction of dithionite ion and bis-(2-pyridinealdoximato)dioxomolybdate(IV) complex
Published 2022-12-01“…The standard enthalpy (69.12 $$\pm$$ ± 0.05 kJ mol−1) and Gibbs energy (80.10 $$\pm$$ ± 0.07) kJ mol−1 suggest that the process is endothermic dependent. The investigation of the anionic surfactant effect on the reaction medium was quantitatively ascertained from the Piszkiewicz model of the complex interaction sequence.…”
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1296
RESEARCH ON FORMS OF MOISTURE LINKS IN SEMI-HARD CHEESES
Published 2015-12-01“…A derivatogram of semihard cheeses enabled to find characteristic temperature sites of dehydration steps, intervals of stability of intermediate compounds, and steps of substance destruction, which are defined by peaks of endothermic reactions which are characterized by intensive moisture evaporation and extraction of gaseous compounds. …”
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1297
Effect of methyl methacrylate concentrations on surface and thermal analysis of composite polymer polymethylmethacrylates with mesogen reactive RM82
Published 2024-12-01“…The absence of PMMA and RM82 peaks both endothermic and exothermic in PMMA-RM82 samples indicates that polymerization has occurred and a new product has formed. …”
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1298
Adsorption of Cd2+ onto apatite surface: Equilibrium, kinetics and thermodynamic studies
Published 2023-02-01“…Results from free energy change obtained adjudged the adsorption process to be spontaneous and endothermic in character. Thus, the chemically synthesized HAp could be an excellent adsorbent for the elimination of Cd2+ in bioremediation applications.…”
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1299
OPTIMALISASI EFISIENSI KOMPOR GASIFIKASI BERBAHAN BAKAR SEKAM PADI DAN SERBUK GERGAJI DENGAN SISTEM UMPAN KONTINYU
Published 2013“…Gasification is an endothermic reaction process to convert biomass producing combustible gas called syngas. …”
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1300
Mass and Energy Balance Analysis of Methanol Production Using Atmospheric CO2 Capture with Energy Source From PCMSR
Published 2016“…The overall process is endothermic, thus a sufficient energy source is needed. …”
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