scholarly journals Enhanced Adsorption of Rhodamine B on Modified Oil-Based Drill Cutting Ash: Characterization, Adsorption Kinetics, and Adsorption Isotherm

ACS Omega ◽  
2021 ◽  
Author(s):  
Yuqing Zhao ◽  
Hang Yang ◽  
Jianfa Sun ◽  
Yi Zhang ◽  
Shibin Xia
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Kinetics ◽  
Rhodamine B ◽  
Drill Cutting ◽  
Enhanced Adsorption

Enhanced adsorption of Rhodamine B by magnetic nitrogen-doped porous carbon prepared from bimetallic ZIFs

2019 ◽  
Vol 575 ◽  
pp. 10-17 ◽  
Author(s):  
Jiajin Zhang ◽  
Xiaoyan Hu ◽  
Xinlong Yan ◽  
Rui Feng ◽  
Min Zhou ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Porous Carbon ◽  
Nitrogen Doped ◽  
Enhanced Adsorption

scholarly journals Chemical adsorption of oxytetracycline from aqueous solution by modified molecular sieves

2016 ◽  
Vol 75 (5) ◽  
pp. 1221-1232 ◽  
Author(s):  
Junmin Lv ◽  
Yulong Ma ◽  
Xuan Chang ◽  
Junzhuo Fang ◽  
Lingyan Cai ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Isotherm ◽  
Adsorption Kinetics ◽  
Molecular Sieves ◽  
Molecular Sieve ◽  
Adsorption Mechanism ◽  
Chemical Adsorption ◽  
Base Property ◽  
Adsorption Sites ◽  
Adsorbed Amount

The removal of oxytetracycline (OTC) from aqueous solution on modified molecular sieve via adsorption was investigated in the present work. The copper(II) modified molecular sieve had the much higher adsorbed amount than unmodified one. The bigger pore, the more adsorption sites benefitted for the adsorbed amount of OTC. The exchanged amount of copper(II) and the acid-base property of solution were important factors influencing the removal efficiency. The adsorption kinetics, the adsorption isotherm, the adsorption thermodynamics and the proposed adsorption mechanism were studied. The analysis of adsorption isotherm indicated it is a monolayer adsorption. The fitting with adsorption kinetics, pseudo-second-order model, deduced chemical adsorption is the main rate controlling step. And the new formation of Cu-O chemical bond and the changes at bands of N-H vibration and C-N vibration by Fourier transform infrared spectrometer further confirmed the proposal adsorption mechanism was the chemical complexation of copper(II) in modified 13X with NH2 group of OTC. As the real exchanged amount of copper(II) was 149.07 mg·g−1 and the solution pH 7.0, the adsorption capacity of modified 13X for OTC reached the maximum of 2,396 mg·g−1 (with the initial concentration of 1,000 mg·L−1).

The Adsorption on Nano-Fe3O4 of Malachite Green from Aqueous Solution

Nano LIFE ◽  
2015 ◽  
Vol 05 (03) ◽  
pp. 1542005 ◽  
Author(s):  
Lu Fan ◽  
Ling Li ◽  
Keke Sun ◽  
Lebao Mao ◽  
Keke Liang ◽  
...  
Keyword(s):  
Experimental Data ◽  
Aqueous Solution ◽  
Adsorption Isotherm ◽  
Malachite Green ◽  
Adsorption Kinetics ◽  
Langmuir Isotherm ◽  
High Adsorption ◽  
Isotherm Adsorption ◽  
High Adsorption Capacity ◽  
Nano Fe3o4

The adsorption of malachite green from an aqueous solution of magnetic Fe 3 O 4 was studied in view of the adsorption isotherm, kinetics and regeneration of the sorbent. The adsorption isotherm of MG on nano- Fe 3 O 4 composite followed the Langmuir isotherm. Adsorption kinetics was determined from the experimental data. The nano- Fe 3 O 4 can be recycled for reuse after regeneration through acetonitrile. The high adsorption capacity and excellent reusability made Fe 3 O 4 attractive for the removal of MG from aqueous solution.

scholarly journals Adsorption and Adsorption Kinetics of the Vapours of Polar Substances on Microporous Carbon Adsorbents

2000 ◽  
Vol 18 (3) ◽  
pp. 205-234 ◽  
Author(s):  
Roman Wojsz
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Kinetics ◽  
Structural Heterogeneity ◽  
Polar Compounds ◽  
Microporous Carbon ◽  
Carbon Adsorbents ◽  
Isotherm Equations ◽  
Kinetics Of ◽  
Microporous Carbon Adsorbents ◽  
Association Of Molecules

The applicability of the Polanyi–Dubinin (PD) potential theory to the adsorption of the vapours of polar and non-polar compounds on to microporous carbon adsorbents has been evaluated. Expressions describing the changes in the fundamental thermodynamic functions resulting from the modified PD theory have been presented. These dependencies are related to the adsorption isotherm equations with the inclusion of parameters for both the structural heterogeneity and the association of molecules.

Sign in / Sign up

Export Citation Format

Share Document