Results 221 to 230 of about 929,382 (278)

Adsorption of three pesticides on polyethylene microplastics in aqueous solutions: Kinetics, isotherms, thermodynamics, and molecular dynamics simulation.

Chemosphere, 2020
Microplastics could act as a carrier for pesticides in the water environment and pose a potential risk. This study mainly investigated the effects of reaction time, microplastics dosages, pH, and NaCl salinity on the adsorption characteristics of three ...
Hui Li, Fenghe Wang, Jining Li, S. Deng, Shengtian Zhang   +4 more
semanticscholar   +1 more source

Measurements and Modeling of Water Adsorption Isotherms of Zeolite Linde-Type A Crystals

, 2020
A systematic study of water adsorption isotherms of zeolite 3A and 4A crystals was carried out over a pressure range of 10-5 to 10-1 bar and temperatures from 25 °C to 250 °C.
Yu Wang
semanticscholar   +1 more source

Mesoporous magnetic biochar composite for enhanced adsorption of malachite green dye: Characterization, adsorption kinetics, thermodynamics and isotherms

, 2020
This study aimed to prepare a corn straw-derived biochar supported nZVI magnetic composite (nZVI/BC) and evaluate its efficiency in adsorption of malachite green dye (MG).
Abdelazeem S. Eltaweil, H. A. Mohamed, E. M. A. El-Monaem, G. El-Subruiti   +3 more
semanticscholar   +1 more source

Adsorption isotherms-microscopic modelling

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1977
Abstract A lattice formalism using “spin variables” is employed to analyse multi-state models for the adsorption of neutral dipoles. In particular, a spin-1/2 (two-state) model incorporating permanent and induced dipole moments of the solvent and the organic adsorbate, substrate interactions, and discreteness of charge effects is analysed.
openaire   +1 more source

Adsorption isotherms and thermal fluctuations

Physical Review B, 1996
The influence of thermal fluctuations on adsorption isotherms is calculated within the context of a selfconsistent mean-field theory, and it is found that such fluctuations cannot be neglected in the analysis of adsorption data. This result arises from our observation that substrate-induced hindrance of thermal fluctuations can significantly alter the ...
, Mecke, , Krim
openaire   +2 more sources

Systematic Measurements of CH4 and CO2 Adsorption Isotherms on Cation-Exchanged Zeolites 13X

Journal of Chemical and Engineering Data, 2019
Experimental data for adsorption of pure carbon dioxide, methane, and nitrogen on zeolite 13X granules at different temperatures (288.15-318.15 K) and pressure up to 20 bar are reported.
Haleh Golipour, B. Mokhtarani, M. Mafi, M. Khadivi, H. Godini   +4 more
semanticscholar   +1 more source

General purpose adsorption isotherms

Environmental Science & Technology, 1986
The fitting of adsorption isotherm equations to experimental data is often an important aspect of data analysis. If the Langmuir and Freundlich isotherms are used, then consideration must be given to the proper weighting of the observations. Preferably nonlinear regression (nonlinear least squares) should be used since this enables these isotherms to ...
openaire   +2 more sources

Adsorption isotherms on fractal substrata

Physical Review A, 1989
Au moyen de simulations de Monte Carlo, on etudie les reactions de recombinaison limitee par diffusion et suivies de la desorption et de l'adsorption de particules isolees a partir de substrats fractals et multifractals. A partir des resultats on admet: a) l'adsorption dissociative et la desorption associative de molecules diatomiques et b) l ...
, Albano, , Mártin
openaire   +2 more sources

Adsorption isotherms—A critique

Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1973
Summary The possibility or the impossibility of separating the particle and the electrode interactions is discussed in a wider context of the effects due to any two interaction potentials on the equation of state. The involved nature of the pressure dependence on two individually definable forces is illustrated through the Percus Yevick results for ...
openaire   +1 more source

Quantitative Characterization of Adsorption Isotherms Using Isothermal Microcalorimetry

Journal of Pharmaceutical Sciences, 1996
The integral heat of adsorption of water vapor on sodium benzoate samples was determined at various partial vapor pressures using a heat conduction microcalorimeter. An equation is presented to describe the calorimetric integral heat response (mJ/g of solid) as a function of relative humidity.
M, Pudipeddi, T D, Sokoloski, S P, Duddu, J T, Carstensen   +3 more
openaire   +2 more sources