Enhanced adsorption of Cr(VI), Ni(II) ions from aqueous solution using modified Eichhornia crassipes and Lemna minor

2019 ◽  
Vol 27 (17) ◽  
pp. 20648-20662 ◽  
Author(s):  
Uma Maheswari Balasubramanian ◽  
Sivakumar Vaiyazhipalayam Murugaiyan ◽  
Thirumarimurugan Marimuthu
Keyword(s):  
Aqueous Solution ◽  
Eichhornia Crassipes ◽  
Lemna Minor ◽  
Enhanced Adsorption

Biosorption of heavy fuel oil from aqueous solution by Eichhornia crassipes (Mart.) Solms in natura

2021 ◽  
Author(s):  
Laís A. Nascimento ◽  
Marilda N. Carvalho ◽  
Mohand Benachour ◽  
Valdemir A. Santos ◽  
Leonie A. Sarubbo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Eichhornia Crassipes ◽  
Fuel Oil ◽  
Heavy Fuel Oil

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 Potencial de plantas acuáticas para la remoción de coliformes totales y Escherichia coli en aguas negras

Enfoque UTE ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 131-144
Author(s):  
R León ◽  
Beatriz Margarita Pernía Santos ◽  
Rosa Siguencia ◽  
S Franco ◽  
A Noboa ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Eichhornia Crassipes ◽  
Lemna Minor ◽  
Pistia Stratiotes ◽  
Azolla Caroliniana ◽  
E Coli

El objetivo de la investigación fue encontrar plantas acuáticas con potencial de remover E. coli y coliformes totales de agua contaminada. Para ello, se realizaron muestreos en Río Guayas, Recinto Aguas Frías y Estero Peñafiel, donde se seleccionaron las especies: Azolla caroliniana, Eichhornia crassipes, Pistia stratiotes, Salvinia auriculata y Lemna minor (Control positivo). Las plantas se reprodujeron in vitro y se realizaron bioensayos para verificar su capacidad de remover E. coli y coliformes. Los ensayos se realizaron por triplicado en 0,5 L de agua con fertilizante y se inoculó una cepa de referencia E. coli ATCC25922.  Como control negativo se inoculó la bacteria sin plantas y control positivo con la planta Lemna sp. Después de 7 días se determinó la carga bacteriana remanente. Se encontró un porcentaje de eliminación de E. coli de 99% para A. caroliniana, E. crassipes y Lemna sp. y de 100% para P. stratiotes y S. auriculata. Posteriormente, se realizaron ensayos con aguas negras en los cuales S. auriculata y A. caroliniana lograron el 100% de remoción de las coliformes y E. coli el resto de plantas tuvieron niveles menores de eficiencia. Se propone el uso de estas especies para el tratamiento de aguas contaminadas. 

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.

Sign in / Sign up

Export Citation Format

Share Document