Facile synthesis of magnetic La–Zr composite as high effective adsorbent for fluoride removal

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35859-35867 ◽  
Author(s):  
Pinghua Chen ◽  
Weibo Zhang ◽  
Menglin Li ◽  
Peng Ai ◽  
Lei Tian ◽  
...  
Keyword(s):  
Precipitation Method ◽  
Fluoride Removal ◽  
Magnetic Composite ◽  
Facile Synthesis ◽  
Batch Studies ◽  
Co Precipitation

A novel magnetic composite of La–Zr was prepared by co-precipitation method, and its fluoride removal ability was investigated in batch studies.

Diseases Prevention by Water Defluoridation Using Hydrotalcites as Decontaminant Materials

2017 ◽  
Vol 68 (1) ◽  
pp. 168-171 ◽  
Author(s):  
Letitia Doina Duceac ◽  
Cristina Elena Dobre ◽  
Ioana Pavaleanu ◽  
Gabriela Calin ◽  
Simona Nichitus ◽  
...  
Keyword(s):  
Dental Fluorosis ◽  
Precipitation Method ◽  
Original Structure ◽  
Fluoride Removal ◽  
Major Goal ◽  
Bone Stiffness ◽  
Morphological Aspects ◽  
Adsorption Capacities ◽  
Interlayer Structure ◽  
Co Precipitation

Preventing diseases is deemed to be the major goal of our century especially when an excessive fluoride in drinking water can cause dental fluorosis, bone stiffness, rheumatism and skeletal fluorosis. Fluoride uptake from groundwater implies a worldwide multidisciplinary effort in order to develop renewable, cheap, human friendly materials. Among other materials, hydrotalcites could be good candidates for an efficient fluoride removal from water due to their adsorption, anion exchange and reconstruction properties. These nanostructured materials were synthesized using co-precipitation method in controlled conditions. Presence of anions in the interlayer structure and morphological aspects were performed by FTIR and SEM techniques. Thermal treatment of hydrotalcites showed good adsorption capacities for water defluoridation mostly due to their tendency to restore the original structure.

scholarly journals Sulfonated Cellulose-Based Magnetic Composite as Useful Media for Water Remediation from Amine Pollutants

2020 ◽  
Vol 10 (22) ◽  
pp. 8155
Author(s):  
Antonio De Nino ◽  
Matteo Antonio Tallarida ◽  
Vincenzo Algieri ◽  
Fabrizio Olivito ◽  
Paola Costanzo ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Chlorosulfonic Acid ◽  
Water Remediation ◽  
Precipitation Method ◽  
Magnetic Composite ◽  
Flame Ionization Detection ◽  
Acid Base ◽  
Flame Ionization ◽  
Co Precipitation ◽  
Green Polymer

Commercially available microcrystalline cellulose (MCC) was functionalized using chlorosulfonic acid, while iron oxide nanoparticles (IONPs) were adsorbed on the surface of the cellulose derivative by the Massart’s co-precipitation method. The obtained magnetite-decorated sulfate cellulose nanoparticles (MDSCNs) were characterized via Fourier transform infrared (FTIR) spectroscopy, scanning-electron microscopy (SEM), and elemental analysis, while the acidity of the functionalized cellulose was determined using an acid–base titration with phenolphthalein as an indicator. Furthermore, in order to determine the adsorptive power of the obtained composite, a series of analyses were performed on aqueous amine pollutants using flame ionization detection gas chromatography (GC-FID). The results of this study clearly show how a bio-compatible green polymer as cellulose can be easy functionalized in order to improve its chemical and physical properties, obtaining a magnetic composite useful in water purification. Adsorption percentages up to 90% and a very small amount of composite used (100 mg) proved how our material can be a powerful tool in environmental remediation.

Effect of Doped Iron on Fluoride Sorption by Calcined MgAlFe-CO3 Layered Double Hydroxides

2013 ◽  
Vol 681 ◽  
pp. 21-25
Author(s):  
Yu Bing Pu ◽  
Jia Rui Wang ◽  
Hong Zheng ◽  
Peng Cai ◽  
Si Yuan Wu
Keyword(s):  
Layered Double Hydroxides ◽  
Synthetic Wastewater ◽  
Precipitation Method ◽  
Molar Ratio ◽  
Fluoride Removal ◽  
Maximum Sorption Capacity ◽  
Fluoride Adsorption ◽  
Maximum Sorption ◽  
Co Precipitation ◽  
Double Hydroxides

A series of MgAlFe-CO3 layered double hydroxides (LDHs) were successfully prepared by co-precipitation method. With synthetic wastewater, the effect of doped iron on fluoride sorption by calcined MgAlFe-CO3 layered double hydroxides (CLDH) under different pH and contact time conditions was investigated. The sorption isotherm data were fitted well to Langmuir isotherm at 25 °C. The maximum sorption capacity of fluoride on CLDH increases first and then decreases with the increase of Fe/Al molar ratio and attains maximum of 71.94 mg/g when Fe/Al molar ratio is 1:2, although doped iron is unfavorable to the regeneration of original layered structure for CLDH after fluoride adsorption. No aluminium in the solution after fluoride adsorption was detected when Fe/Al molar ratio is equal to or larger than 1:2. The results indicate that CLDH with proper Fe/Al molar ratio is a promising candidate as an adsorbent material for fluoride removal from aqueous solutions.

Modification of Fe3O4 superparamagnetic nanoparticles with zirconium oxide; preparation, characterization and its application toward fluoride removal

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 72058-72068 ◽  
Author(s):  
F. Riahi ◽  
M. Bagherzadeh ◽  
Z. Hadizadeh
Keyword(s):  
Aqueous Solutions ◽  
Zirconium Oxide ◽  
Superparamagnetic Nanoparticles ◽  
Precipitation Method ◽  
Fluoride Removal ◽  
Co Precipitation

Fe3O4 superparamagnetic nanoparticles (NPs) modified with zirconia (ZrO2) were synthesized (Fe3O4@ZrO2) using a chemical co-precipitation method and used as a nanoadsorbent in the removal of excessive fluoride from aqueous solutions.

One-step synthesis of magnetic iron–aluminum oxide/graphene oxide nanoparticles as a selective adsorbent for fluoride removal from aqueous solution

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10783-10791 ◽  
Author(s):  
Lei Liu ◽  
Zhaojie Cui ◽  
Qianchi Ma ◽  
Wei Cui ◽  
Xu Zhang
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Aluminum Oxide ◽  
Precipitation Method ◽  
Fluoride Removal ◽  
Oxide Nanoparticles ◽  
Magnetic Adsorbent ◽  
Iron Aluminum ◽  
One Step ◽  
Co Precipitation

A novel magnetic adsorbent consisting of iron–aluminum oxide/graphene oxide nanoparticles (IAO/GO) was prepared through a one-step co-precipitation method for fluoride removal from aqueous solution.

Facile synthesis of nanostructured MoO3 coated Li1.2Mn0.56Ni0.16Co0.08O2 materials with good electrochemical properties

RSC Advances ◽  
2016 ◽  
Vol 6 (114) ◽  
pp. 113275-113282 ◽  
Author(s):  
Yuxian Gao ◽  
Pinghong Xu ◽  
Fang Chen ◽  
Chuxiong Ding ◽  
Long Chen ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Molten Salt ◽  
Cathode Materials ◽  
Precipitation Method ◽  
Molten Salt Method ◽  
Facile Synthesis ◽  
Co Precipitation

Li1.2Mn0.56Ni0.16Co0.08O2 cathode materials were synthesized by a co-precipitation method, and consequently coated with MoO3 by a molten salt method.

Green Magnetic Composite Sheet from Durian Shell and Nano-Magnetite Particles

2015 ◽  
Vol 761 ◽  
pp. 515-519 ◽  
Author(s):  
Mohd Khairul Shahril ◽  
Rose Farahiyan Munawar ◽  
Muhd Hafez Mohamed ◽  
Afraha Baiti Arif ◽  
Noraiham Mohamad ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Particles ◽  
Added Value ◽  
Precipitation Method ◽  
Magnetic Composite ◽  
Great Success ◽  
Composite Sheet ◽  
Biomass Waste ◽  
Co Precipitation

Biomass-derived materials such as kenaf pulp and wood chips are a perfect candidate to produce magnetic paper. Furthermore, by using biomass waste, such as paddy straw, sugarcane, bagasse and durian shell, the cost of producing magnetic paper can be further reduced while giving added value to the waste. This paper investigates the potential of producing magnetic sheet from durian shell. Initially, durian shells were dried before undergoing the pulping process. The resulted sheet was then combined with magnetic particles, the nanomagnetite using either lumen loading or in-situ co-precipitation to produce a magnetic composite sheet. After being loaded with magnetic particles, the composite sheets were tested in terms of the homogeneity of the magnetic particles in the samples, degree of loading of the magnetic particles and the magnetic properties of the samples. Results obtained show a great success in producing the magnetic sheet from durian shell waste and nanomagnetite particles. It was also found that the lumen loading method gives better magnetic properties compared to the in-situ co-precipitation method.

Facile synthesis and characterization of nickel molybdate nanorods as an effective photocatalyst by co-precipitation method

2016 ◽  
Vol 27 (10) ◽  
pp. 10244-10251 ◽  
Author(s):  
Ghazal Kianpour ◽  
Faezeh Soofivand ◽  
Marjan Badiei ◽  
Masoud Salavati-Niasari ◽  
Masood Hamadanian
Keyword(s):  
Precipitation Method ◽  
Synthesis And Characterization ◽  
Facile Synthesis ◽  
Nickel Molybdate ◽  
Co Precipitation
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