Adsorption behavior of carboxymethyl konjac glucomannan microspheres for fluoride from aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (92) ◽  
pp. 89417-89429 ◽  
Author(s):  
Liping Wu ◽  
Xiaoyan Lin ◽  
Jiajie Wu ◽  
Xingbao Zhou ◽  
Xuegang Luo
Keyword(s):  
Aqueous Solution ◽  
Electrostatic Interaction ◽  
Adsorption Mechanism ◽  
Konjac Glucomannan ◽  
Adsorption Behavior ◽  
Schematic Diagram ◽  
Carboxymethyl Konjac Glucomannan ◽  
Coordination Reaction

The CMKGM–La–Al is characterized by SEM, EDX, and XPS. We find that adsorption mechanism of the adsorbent involved coordination reaction and electrostatic interaction. The schematic diagram of preparation of CMKGM–La–Al is shown as above.

Adsorption behavior of magnetic amino-functionalized metal–organic framework for cationic and anionic dyes from aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48884-48895 ◽  
Author(s):  
Haochi Liu ◽  
Ligang Chen ◽  
Jie Ding
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Bonding ◽  
Electrostatic Interaction ◽  
Metal Organic Framework ◽  
Adsorption Behavior ◽  
Anionic Dyes ◽  
Stacking Interaction ◽  
Π Stacking ◽  
Metal Organic ◽  
Π Stacking Interaction

The mechanisms of interactions such as electrostatic interaction, hydrogen bonding, and π–π stacking interaction were discussed for the adsorption of cationic and anionic dyes onto magnetic NH2-MIL-101(Al).

scholarly journals A Comparison Study on the Arsenate Adsorption Behavior of Calcium-Bearing Materials

Materials ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 1936
Author(s):  
Han Wang ◽  
Hong Zhu
Keyword(s):  
Aqueous Solution ◽  
Chemical Stability ◽  
Adsorption Mechanism ◽  
Calcium Content ◽  
Surface Characteristics ◽  
Adsorption Behavior ◽  
Comparison Study ◽  
Comprehensive Properties ◽  
High Efficient ◽  
Bearing Materials

The calcium-bearing adsorbents are widely used in the treatment of arsenic-containing wastewater due to their excellent treatment effect and economy. In order to obtain high-efficient adsorbents for arsenate (As(V)) removal, the adsorption behavior of calcium oxide (CaO), calcium fluoride (CaF2) and calcium carbonate (CaCO3) on As(V) in aqueous solution at different concentrations were explored. The adsorption mechanism was also explored based on surface characteristics: morphology, specific surface area, as well as their effective calcium content. Not only that, the chemical stability of these materials was further studied. Results exhibited that the As(V) removal capability of these materials is in the following order, CaO > CaF2 > CaCO3. When CaO served as an absorbent, As(V) with initial concentration of 0.2 mg/L can be reduced to 0.383 × 10−3 mg/L in 10 min. Moreover, the capabilities of CaO, CaF2 and CaCO3 for removing As(V) are positively correlated with their effective calcium content in aqueous solution, which provide the basis for selecting calcium-bearing materials with excellently comprehensive properties for the field of As(V) removal in aqueous solution. What’s more, all three materials exhibit great chemical stability after adsorption of As(V).

Effect of Fe–N modification on the properties of biochars and their adsorption behavior on tetracycline removal from aqueous solution

2021 ◽  
Vol 325 ◽  
pp. 124732
Author(s):  
Yanglu Mei ◽  
Jin Xu ◽  
Yin Zhang ◽  
Bin Li ◽  
Shisuo Fan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Behavior

Removal of Anionic Metalloid/Metals by PEI-Modified Corynebacterium glutamicum

2013 ◽  
Vol 825 ◽  
pp. 568-571
Author(s):  
Namgyu Kim ◽  
Munsik Park ◽  
Jongmoon Park ◽  
Donghee Park
Keyword(s):  
Aqueous Solution ◽  
Binding Site ◽  
Corynebacterium Glutamicum ◽  
Adsorption Mechanism ◽  
Competitive Inhibition ◽  
Aqueous System ◽  
Reduction Mechanism ◽  
Removal Mechanism ◽  
Sulfate Ion ◽  
Industrial Fermentation

An anionic biosorbent was derived from an industrial fermentation biowate, Corynebacterium glutamicum, by being cross-linked with polyethylenimine (PEI). A fiber form of the biosorbent was used to examine its potentiality of removing anionic metals such as As (V), Cr (VI) and Mn (VII) in aqueous system. As (V) and Cr (VI) were efficiently removed by the biosorbent through anionic adsorption mechanism. Sulfate ion seriously inhibited adsorption of the anionic metals through competitive inhibition with respect to the binding site of the biosorbent. In the case of Mn (VII), its removal mechanism by the biosorbent was not anionic adsorption. Mn (VII) was completely removed in aqueous phase, meanwhile, Mn (II) appeared and increased in proportion to the Mn (VII) depletion. As a result, adsorption coupled reduction was chosen as the mechanism of Mn (VII) removal by the biosorbent. In conclusion, the anionic biosorbent could be used to remove various anionic metals from aqueous solution through anionic adsorption or reduction mechanism.

Removal of copper and lead from aqueous solution by carboxylic acid functionalized deacetylated konjac glucomannan

2009 ◽  
Vol 171 (1-3) ◽  
pp. 802-808 ◽  
Author(s):  
Feng Liu ◽  
Xuegang Luo ◽  
Xiaoyan Lin ◽  
Lili Liang ◽  
Yan Chen
Keyword(s):  
Aqueous Solution ◽  
Carboxylic Acid ◽  
Konjac Glucomannan
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