Enhanced adsorption of cu(II) and Zn(II) from aqueous solution by polyethyleneimine modified straw hydrochar

2021 ◽  
pp. 146116
Author(s):  
Xinyue He ◽  
Tao Zhang ◽  
Qing Xue ◽  
Yalan Zhou ◽  
Hailong Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Enhanced Adsorption

Enhanced adsorption removal of methyl orange from aqueous solution by nanostructured proton-containing δ-MnO2

2015 ◽  
Vol 3 (10) ◽  
pp. 5674-5682 ◽  
Author(s):  
Yan Liu ◽  
Chao Luo ◽  
Jian Sun ◽  
Haizhen Li ◽  
Zebin Sun ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Solid State ◽  
Solid State Reaction ◽  
Proton Exchange ◽  
Precipitation Method ◽  
Homogeneous Precipitation ◽  
Adsorption Removal ◽  
Homogeneous Precipitation Method ◽  
Enhanced Adsorption

Two nanostructured proton-containing δ-MnO2 (H-δ-MnO2) materials were synthesized through proton exchange for K-containing δ-MnO2 (K-δ-MnO2) nanosheets and nanoparticles prepared by the hydrothermal homogeneous precipitation method and solid-state reaction.

scholarly journals Preparation, Characterization and Adsorption Potential of Grainy Halloysite-CNT Composites for Anthracene Removal from Aqueous Solution

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 890 ◽  
Author(s):  
Gabriela Kamińska ◽  
Mariusz Dudziak ◽  
Edyta Kudlek ◽  
Jolanta Bohdziewicz
Keyword(s):  
Carbon Nanotubes ◽  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Contact Time ◽  
Adsorption Process ◽  
Heating Temperature ◽  
Langmuir Model ◽  
Adsorption Potential ◽  
Adsorption Sites ◽  
Enhanced Adsorption

Grainy Hal-CNT composites were prepared from powder halloysite nanoclay (Hal) and carbon nanotubes (CNTs). The effect of the amount and type of CNTs, as well as calcination temperature on morphology and properties of Hal-CNT composites and their adsorption capacity of anthracene (ANT), were studied. The surface topography of granules was heterogenous, with cracks and channels created during granulation of powder clay and CNTs. In FTIR, spectra were exhibited only in the bands arising from halloysite, due to its dominance in the granules. The increase in the heating temperature to 550 °C resulted in mesoporosity/macroporosity of the granules, the lowest specific surface area (SSA) and poorest adsorption potential. Overall, SSA of all Hal-CNT composites were higher than raw Hal, and by itself, heated halloysite. The larger amount of CNTs enhanced adsorption kinetics due to the more external adsorption sites. The equilibrium was established with the contact time of approximately 30 min for the sample Hal-SWCNT 85:15, while the samples with loading 96:4, it was 60–90 min. Adsorption isotherms for ANT showed L1 type, which is representative for the sorbents with limited adsorption capacity. The Langmuir model described the adsorption process, suggesting a monolayer covering. The sample Hal-SWCNT 85:15 exhibited the highest adsorption capacity of ANT, due to its highest SSA and microporous character.

Preparation of sulfonated chitosan for enhanced adsorption of methylene blue from aqueous solution

2020 ◽  
Vol 151 ◽  
pp. 104584 ◽  
Author(s):  
S. Sabar ◽  
H. Abdul Aziz ◽  
N.H. Yusof ◽  
S. Subramaniam ◽  
K.Y. Foo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Enhanced Adsorption

Enhanced adsorption of fluoride on Al-modified boron nitride nanosheets from aqueous solution

2019 ◽  
Vol 793 ◽  
pp. 512-518 ◽  
Author(s):  
Qianqian Song ◽  
Yi Fang ◽  
Jingjing Wang ◽  
Jianli Liang ◽  
Qi Hu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Boron Nitride ◽  
Boron Nitride Nanosheets ◽  
Enhanced Adsorption
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