Adsorption behaviors of l-arginine from aqueous solutions on a spherical cellulose adsorbent containing the sulfonic group

2007 ◽  
Vol 98 (5) ◽  
pp. 1144-1148 ◽  
Author(s):  
Minghua Liu ◽  
Jianhui Huang ◽  
Yun Deng
Keyword(s):  
Aqueous Solutions ◽  
Sulfonic Group ◽  
Adsorption Behaviors ◽  
Cellulose Adsorbent

Kinetics and thermodynamics of the sorption of furaltadone from aqueous solutions on magnetic multi-walled carbon nanotubes

2014 ◽  
Vol 70 (6) ◽  
pp. 964-971
Author(s):  
Xu Chen ◽  
Zhen-hu Xiong
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solutions ◽  
Sorption Data ◽  
Multi Wall Carbon Nanotubes ◽  
Adsorption Behaviors ◽  
Different Temperatures ◽  
Multi Walled Carbon Nanotubes ◽  
Pseudo Second Order ◽  
Experimental Data Analysis ◽  
Walled Carbon Nanotubes

Magnetic multi-wall carbon nanotubes (M-MWCNTs) were used as an adsorbent for removal of furaltadone from aqueous solutions, and the adsorption behaviors were investigated by varying pH, sorbent amount, sorption time and temperature. The results showed that the adsorption efficiency of furaltadone reached 97% when the dosage of M-MWCNT was 0.45 g · L−1, the pH was 7 and the adsorption time was 150 min. The kinetic data showed that the pseudo-second-order model can fit the adsorption kinetics. The sorption data could be well explained by the Langmuir model under different temperatures. The adsorption process was influenced by both intraparticle diffusion and external mass transfer. The experimental data analysis indicated that the electrostatic attraction and π–π stacking interactions between M-MWCNT and furaltadone might be the adsorption mechanism. Thermodynamic analysis reflected that adsorption of furaltadone on the M-MWCNT was spontaneous and exothermic. Our study showed that M-MWCNTs can be used as a potential adsorbent for removal of furaltadone from water and wastewater.

A chelating cellulose adsorbent for the removal of Cu(II) from aqueous solutions

2006 ◽  
Vol 99 (6) ◽  
pp. 2888-2897 ◽  
Author(s):  
D. W. O'Connell ◽  
C. Birkinshaw ◽  
T. F. O'Dwyer
Keyword(s):  
Aqueous Solutions ◽  
Cellulose Adsorbent

Facile crosslinking synthesis of hyperbranch-substrate nanonetwork magnetite nanocomposite for the fast and highly efficient removal of lead ions and anionic dyes from aqueous solutions

RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 67057-67071 ◽  
Author(s):  
Mingqiang Liu ◽  
Baochang Zhang ◽  
Huicai Wang ◽  
Fei Zhao ◽  
Yuan Chen ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Functional Group ◽  
Lead Ions ◽  
Surface Functional Group ◽  
Efficient Removal ◽  
Anionic Dyes ◽  
Highly Efficient ◽  
Adsorption Behaviors ◽  
Group Density ◽  
Effect Of Surface

The aim of the present work was to investigate the effect of surface functional group density on the adsorption behaviors of functionalized mesoporous Fe3O4.

scholarly journals Removal of Lead(II) Ions from Aqueous Solutions Using a Modified Cellulose Adsorbent

2006 ◽  
Vol 24 (4) ◽  
pp. 337-348 ◽  
Author(s):  
David W. O'Connell ◽  
Colin Birkinshaw ◽  
Thomas F. O'Dwyer
Keyword(s):  
Aqueous Solutions ◽  
Cellulose Adsorbent ◽  
Modified Cellulose

33S NMR spectra of some sulfonated naphthalenes, naphthols, and their anions

1990 ◽  
Vol 55 (2) ◽  
pp. 446-451 ◽  
Author(s):  
Josef Jirman ◽  
Antonín Lyčka
Keyword(s):  
Aqueous Solutions ◽  
Ammonium Sulfate ◽  
Nmr Spectra ◽  
Chemical Shifts ◽  
Hydroxyl Group ◽  
Upfield Shift ◽  
Sulfonic Group ◽  
Nmr Chemical Shifts ◽  
Downfield Shift ◽  
Nmr Signals

The 33S NMR spectra of 11 naphthalenesulfonates, 11 hydroxynaphthalenesulfonates, two dihydroxynaphthalenesulfonates, and their anions have been measured in aqueous solutions. The 33S NMR chemical shifts of these compounds exhibit upfield shifts when related to ammonium sulfate as the standard. Introduction of a further sulfonic group causes a small upfield shift (up to 3 ppm). Introduction of a hydroxyl group causes a downfield shift (up to 5 ppm) unless the ring is further substituted. Formation of the anion from hydroxyl group causes an additional downfield shift (up to 6 ppm). The half-width of 33S NMR signals of sulfonated naphthalenes, naphthols, and their anions vary from 10 to 400 Hz.

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