Remediation of waste water by Co–Fe layered double hydroxide and its catalytic activity

2017 ◽  
Vol 71 ◽  
pp. 441-453 ◽  
Author(s):  
S.A. Abdel Moaty ◽  
A.A. Farghali ◽  
M. Moussa ◽  
Rehab Khaled
Keyword(s):  
Waste Water ◽  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Double Hydroxide

scholarly journals A new biocompatible ternary Layered Double Hydroxide Adsorbent for ultrafast removal of anionic organic dyes

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Garima Rathee ◽  
Amardeep Awasthi ◽  
Damini Sood ◽  
Ravi Tomar ◽  
Vartika Tomar ◽  
...  
Keyword(s):  
Waste Water ◽  
Methyl Orange ◽  
Surface Area ◽  
Layered Double Hydroxide ◽  
Removal Efficiency ◽  
Organic Dyes ◽  
High Surface ◽  
High Surface Area ◽  
Morphological Studies ◽  
Double Hydroxide

Abstract It would be of great significance to introduce a new biocompatible Layered Double Hydroxide (LDH) for the efficient remediation of wastewater. Herein, we designed a facile, biocompatible and environmental friendly layered double hydroxide (LDH) of NiFeTi for the very first time by the hydrothermal route. The materialization of NiFeTi LDH was confirmed by FTIR, XRD and Raman studies. BET results revealed the high surface area (106 m2/g) and the morphological studies (FESEM and TEM) portrayed the sheets-like structure of NiFeTi nanoparticles. The material so obtained was employed as an efficient adsorbent for the removal of organic dyes from synthetic waste water. The dye removal study showed >96% efficiency for the removal of methyl orange, congo red, methyl blue and orange G, which revealed the superiority of material for decontamination of waste water. The maximum removal (90%) of dyes was attained within 2 min of initiation of the adsorption process which supported the ultrafast removal efficiency. This ultrafast removal efficiency was attributed to high surface area and large concentration of -OH and CO32− groups present in NiFeTi LDH. In addition, the reusability was also performed up to three cycles with 96, 90 and 88% efficiency for methyl orange. Furthermore, the biocompatibility test on MHS cell lines were also carried which revealed the non-toxic nature of NiFeTi LDH at lower concentration (100% cell viability at 15.6 μg/ml). Overall, we offer a facile surfactant free method for the synthesis of NiFeTi LDH which is efficient for decontamination of anionic dyes from water and also non-toxic.

Layered double hydroxide ion exchangers on superparamagnetic microparticles for recovery of phosphate from waste water

2013 ◽  
Vol 1 (5) ◽  
pp. 1840-1848 ◽  
Author(s):  
Karl Mandel ◽  
Asya Drenkova-Tuhtan ◽  
Frank Hutter ◽  
Carsten Gellermann ◽  
Heidrun Steinmetz ◽  
...  
Keyword(s):  
Waste Water ◽  
Layered Double Hydroxide ◽  
Ion Exchangers ◽  
Hydroxide Ion ◽  
Double Hydroxide

Heteropolyanion Substituted Layered Double Hydroxide as Recoverable Catalyst for the Oxidative Desulfurization of Simulated Fuel Oil and Diesel

2014 ◽  
Vol 672-674 ◽  
pp. 613-618
Author(s):  
Feng Li Yu ◽  
Yang Lu
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Atmospheric Pressure ◽  
Removal Rate ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Simulated Fuel ◽  
Recoverable Catalyst ◽  
Double Hydroxide

Heteropolyanion substituted layered double hydroxide were synthesized and used as catalysts for oxidative desulfurization in simulated fuel oil (dibenzothiophene (DBT) inn-octane) or diesel. The catalysts are recoverable and operate with high conversion efficiency under mild conditions of atmospheric pressure and 60 °C in a biphasic system using peroxide hydrogen as oxidant and acetonitrile as extractant. Zn9Al3(OH)24PW12O40(ZnAlPW), Zn9Al3(OH)24PMo12O40(ZnAlPMo) and Zn12Al4(OH)32SiW12O40(ZnAlSiW) were identified as effective catalysts for the oxidative removal of DBT from simulated fuel oil. The order of decreasing catalytic activity is ZnAlPMo > ZnAlPW > ZnAlSiW. The results show that the best catalysts, ZnAlPMo, attained to a DBT conversion of nearly 100%. All the catalysts can be readily recycled by filtration after use. The recoverable ZnAlPMo retains nearly the same catalytic activity as the fresh. ZnAlPMo was found to exhibit an ideal catalytic activity in oxidative desulfurization of diesel with a total sulfur removal rate of 91.8%.

Calcined Ni—Al layered double hydroxide as a catalyst for total oxidation of volatile organic compounds: Effect of precursor crystallinity

2007 ◽  
Vol 61 (2) ◽  
Author(s):  
Z. Mikulová ◽  
P. Čuba ◽  
J. Balabánová ◽  
T. Rojka ◽  
F. Kovanda ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Treatment ◽  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Slight Effect ◽  
Total Oxidation ◽  
Volatile Organic ◽  
Double Hydroxide ◽  
Short Time ◽  
Oxidation Of Ethanol

AbstractThe effect of hydrothermal treatment on properties (crystallinity, porous structure, reducibility, acidity, basicity, and catalytic activity and selectivity in toluene and ethanol total oxidation) of Ni—Al layered double hydroxide precursors and related mixed oxides was examined. The hydrothermal treatment increased considerably both the content of crystalline phase and LDH crystallite size. On the other hand, only a slight effect of the precursor hydrothermal treatment on crystallinity of the related Ni—Al mixed oxides obtained by calcination at 450°C was observed. The reducibility of NiO particles appeared to be hindered considerably compared to the reducibility of pure NiO. Catalytic activity of the Ni—Al mixed oxides prepared from the precursors hydrothermally treated for a short time (4 h) was the highest. The highest amount of acetaldehyde formed during the total oxidation of ethanol, i.e. the worst selectivity was found for the calcined Ni—Al LDH without hydrothermal treatment.

scholarly journals Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2284-2291 ◽  
Author(s):  
Jianyao Zhu ◽  
Zhiliang Zhu ◽  
Hua Zhang ◽  
Hongtao Lu ◽  
Yanling Qiu
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Organic Pollutants ◽  
High Catalytic Activity ◽  
Reactive Radicals ◽  
Double Hydroxide

MgCuFe-layered double hydroxide exhibited high catalytic activity to activate peroxymonosulfate for degradation of organic pollutants. SO4˙− and ·OH are the main reactive radicals involved in the degradation of organic pollutants.

Controlled synthesis of monodisperse silver nanoparticles supported layered double hydroxide catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 13239-13245 ◽  
Author(s):  
D. A. Islam ◽  
D. Borah ◽  
H. Acharya
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Alcohol Oxidation ◽  
High Catalytic Activity ◽  
Controlled Synthesis ◽  
Ag Nps ◽  
Double Hydroxide ◽  
Double Hydroxides

Monodisperse silver nanoparticles supported layered double hydroxides (Ag NPs–LDH) were preferentially deposited on the outer surfaces of pillared LDH offered a high catalytic activity on alcohol oxidation.

scholarly journals A novel three-dimensional hierarchical CuAl layered double hydroxide with excellent catalytic activity for degradation of methyl orange

RSC Advances ◽  
2017 ◽  
Vol 7 (46) ◽  
pp. 29051-29057 ◽  
Author(s):  
Jialun Li ◽  
Shuhua Zhang ◽  
Yang Chen ◽  
Tianmeng Liu ◽  
Chunyan Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Layered Double Hydroxide ◽  
Copper Ions ◽  
Three Dimensional ◽  
Organic Dye ◽  
Base Catalyst ◽  
Heterogeneous Fenton ◽  
Double Hydroxide ◽  
Degradation Of Methyl Orange

In this study, heterogeneous Fenton-like degradation of the reactive organic dye methyl orange in water was investigated over CuAl–Layered Double Hydroxide (CuAl–LDH) with high copper ions content as a base catalyst prepared by a hydrothermal synthesis.

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