Development of zirconia nanoparticle-loaded hydrogel for arsenic adsorption and sensing

2020 ◽  
Vol 146 ◽  
pp. 104427 ◽  
Author(s):  
Hideaki Tokuyama ◽  
Eri Kitamura ◽  
Yoshimi Seida
Keyword(s):  
Arsenic Adsorption ◽  
Zirconia Nanoparticle

As(III) Removal by Dynamic Adsorption onto Amberlite XAD7 Functionalized with Crown Ether and Doped with Fe(III) Ions

2019 ◽  
Vol 70 (7) ◽  
pp. 2330-2334
Author(s):  
Mihaela Ciopec ◽  
Adina Negrea ◽  
Narcis Duteanu ◽  
Corneliu Mircea Davidescu ◽  
Iosif Hulka ◽  
...  
Keyword(s):  
Adsorption Process ◽  
Arsenic Removal ◽  
Arsenic Concentration ◽  
Fixed Bed ◽  
World Health ◽  
Arsenic Content ◽  
Arsenic Adsorption ◽  
Stage Of Development ◽  
Wide Range ◽  
Health Organization

Arsenic content in groundwater�s present a wide range of concentration, ranging from hundreds of micrograms to thousands of micrograms of arsenic per litter, while the maximum permitted arsenic concentration established by World Health Organization (WHO) is 10 mg L-1. According to the WHO all people, regardless of their stage of development and their social economic condition, have the right to have access to adequate drinking water. The most efficient and economic technique used for arsenic removal is represented by adsorption. In order to make this remediation technique more affordable and environmentally friendly is important to new materials with advance adsorbent properties. Novelty of present paper is represented by the usage of a new adsorbent material obtained by physical - chemical modification of Amberlite XAD polymers using crown ethers followed by iron doping, due to well-known affinity of arsenic for iron ions. Present paper aims to test the obtained modified Amberlite polymer for arsenic removal from real groundwater by using adsorption in a fixed bed column, establishing in this way a mechanism for the adsorption process. During experimental work was studied the influence of competing ions from real water into the arsenic adsorption process.

scholarly journals Evaluation of Fe-Mg Binary Oxide for As (III) Adsorption—Synthesis, Characterization and Kinetic Modelling

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 805
Author(s):  
Saif Ullah Khan ◽  
Rumman Zaidi ◽  
Feroz Shaik ◽  
Izharul Haq Farooqi ◽  
Ameer Azam ◽  
...  
Keyword(s):  
Arsenic Removal ◽  
Kinetic Modelling ◽  
Arsenic Concentration ◽  
Experimental Studies ◽  
Precipitation Method ◽  
Arsenic Adsorption ◽  
Adsorbent Dosage ◽  
X Ray ◽  
Co Precipitation ◽  
Contaminated Waters

Nanotechnology has received much attention in treating contaminated waters. In the present study, a facile co-precipitation method was employed to synthesize a novel iron and magnesium based binary metal oxide using a stoichiometrically fixed amount of FeNO3.9H2O and MgNO3.6H2O in a proportion of molar concentration 1:1 and was later evaluated in removing As (III) from contaminated waters. Characterization of the prepared nanomaterial was done using X-ray diffraction (XRD), scanning electron microscopy (SEM), Energy Dispersive X-Ray Analysis (EDAX) and ultraviolet–visible spectrophotometry (UV-VIS). Experimental studies on batch scale were carried out, examining the effect of varying initial concentrations of metal, adsorbent dosage, application time and initial pH on removal efficiency. Arsenic removal increased on increasing adsorbent dosage (0.1–1 g/L) but trend reversed on increasing initial arsenic concentration attaining qmax of 263.20 mg/g. Adsorption was quite efficient in pH range 4–8. Freundlich fitted better for adsorption isotherm along with following Pseudo-2nd order kinetics. The reusability and effect of co-existing ions on arsenic adsorption, namely SO42−, CO32− and PO43− were also explored with reusability in 1st and 2nd cycles attained adsorptive removal up to 77% and 64% respectively. The prepared nano-adsorbent showed promising results in terms of high arsenic uptake (qmax of 263.20 mg/g) along with facile and cost-effective synthesis. Thus, the co-precipitation technique used in this work is a simple one step procedure without any use of any precursor as compared to most of the other procedures used for synthesis.

TiO2-pillared magadiite and its arsenic adsorption capacity

2019 ◽  
Vol 26 (1) ◽  
pp. 311-318
Author(s):  
Sarah Louise S. Atulba ◽  
Jeong Hun Jang ◽  
Man Park
Keyword(s):  
Adsorption Capacity ◽  
Arsenic Adsorption

Parametric study of zirconia nanoparticle synthesis in low pressure flames

2001 ◽  
Vol 44 (8-9) ◽  
pp. 2259-2262 ◽  
Author(s):  
A Colibaba-Evulet ◽  
V Shukla ◽  
N.G Glumac ◽  
B Kear ◽  
F Cosandey
Keyword(s):  
Parametric Study ◽  
Nanoparticle Synthesis ◽  
Low Pressure ◽  
Zirconia Nanoparticle

Study Of Arsenic Adsorption Through The Application Of Chitosan Obtained From Shrimp (Penaeus Kerathurus)

2021 ◽  
Author(s):  
Jonathan Almirón Baca ◽  
Marcela Lopez Chavez ◽  
Alejandro Silva Vela ◽  
Paul Huanca Zuñiga ◽  
Danny Tupayachy Quispe
Keyword(s):  
Arsenic Adsorption

Arsenic adsorption by soil from Misiones province, Argentina

2019 ◽  
Vol 13 ◽  
pp. 30-36 ◽  
Author(s):  
Rosana Boglione ◽  
Carina Griffa ◽  
María Cecilia Panigatti ◽  
Susana Keller ◽  
María Celeste Schierano ◽  
...  
Keyword(s):  
Arsenic Adsorption ◽  
Misiones Province

scholarly journals Arsenic adsorption characteristics of biogenic iron oxides in comparison to chemogenic iron oxides

2012 ◽  
Vol 48 (4) ◽  
pp. 145-156
Author(s):  
Nguyen Ai Le ◽  
Daisuke Inoue ◽  
Kazunari Sei ◽  
Satoshi Soda ◽  
Michihiko Ike
Keyword(s):  
Iron Oxides ◽  
Arsenic Adsorption ◽  
Adsorption Characteristics ◽  
Biogenic Iron Oxides ◽  
Biogenic Iron
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