Removal of iodide from water using silver nanoparticles-impregnated synthetic zeolites

Tauanov, Zhandos; Inglezakis, Vassilis J.

doi:10.1016/j.scitotenv.2019.05.106

Cited by 54 publications

(37 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This study is a continuation of our previous research where we used fly ash-derived synthetic zeolites and cryogels doped with Ag 0 for the removal of iodide [5,33]. Herein, natural clinoptilolite was modified with silver to produce two different nanocomposites containing metallic silver nanoparticles (Ag 0 ) and silver oxide nanoparticles (Ag 2 O).…”

Section: Major Phasementioning

confidence: 97%

“…Water phase (I − ) Analcime/ Sodalite (S) Ag 0 450 2.5 5 20.44 [5] Ag-Z (S) 3 BETA zeolite (S) 3 Ag + 1333 --46-267 [23] As shown in Table 1, there are several studies on the use of natural and synthetic zeolites for iodide removal from water, especially zeolites modified with different silver forms (Ag 0 or Ag 2 O). All studies clearly showed the effectiveness of silver modification.…”

Section: Major Phasementioning

confidence: 99%

“…Concerning iodide, the major source of pollution comes from nuclear power plants [1][2][3]. The produced radioactive wastes, such as isotopes of iodide ( 129 I and 131 I), are typically used for the fission of uranium [1,4,5]. Despite the robust safety level in large-scale plants there are cases in the history when processes malfuncted leading to nuclear accidents.…”

Section: Introductionmentioning

confidence: 99%

“…As pollution affects all ecosystems various remediation approaches have been employed depending on the form iodine in the environment. Among most frequently and successfully applied methods for the removal of iodide from water, are the ion exchange and membrane separation [5,13]. These methods however are relatively expensive and, in particular during ion exchange, other ions are released into the solution.…”

Section: Introductionmentioning

confidence: 99%

“…These methods however are relatively expensive and, in particular during ion exchange, other ions are released into the solution. An effective and relatively simple method is adsorption using various porous materials, which are typically of low cost and can be easily modified for targeted iodide removal [5,[14][15][16][17]. Such low cost adsorbents are the natural zeolites, which have been studied for iodide removal from water since decades.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

Self Cite

View full text Add to dashboard Cite

In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5–25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30–1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

show abstract

Section: Major Phasementioning

confidence: 97%

Section: Major Phasementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

Scavenging Radionuclide by Shapeable Porous Materials

Jing,

Li,

et al. 2024

ChemPlusChem

View full text Add to dashboard Cite

Nuclear energy is a competitive and environmentally friendly low‐carbon energy source. It is seen as an important avenue for satisfying energy demands, responding to the energy crisis, and mitigating global climate change. However, much attention has been paid to achieving the effective treatment of radionuclide oxoanions produced in nuclear waste. Initially, advanced adsorbents were mainly available in powder form, which meant that additional purification processes were usually required for separation and recovery in industrial applications. Therefore, to meet the practical requirements of industrial applications, materials need to be molded and processed into forms such as beads, membranes, gels, and resins. Here, we summarize the fabrication of porous materials used for capturing typical radionuclide oxoanions, including UO22+, TcO4−, IO3−, SeO32−, and SeO4−.

show abstract

Phosphorus and potassium recovery from anaerobically digested olive mill wastewater using modified zeolite, fly ash and zeolitic fly ash: a comparative study

Mitrogiannis

Psychogiou

Manthos

et al. 2022

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND Nutrient recovery from wastewater is gaining attention in the frame of circular economy. In this study, Ca(OH)2‐treated zeolite (CaT‐Z), lignite fly ash (FA) and zeolitic fly ash (ZFA) were primarily used to adsorb phosphate phosphorus (PO4‐P) from anaerobically digested olive mill wastewater (ADOMW). The simultaneous recovery of potassium (K) was also examined based on adsorption and desorption data. The fractionation of adsorbed P was determined as an important parameter for its plant availability. RESULTS More P was adsorbed from ADOMW on ZFA and FA (up to 4.35 and 5.21 mg g−1, respectively) than on CaT‐Z (2.62 mg g−1). An increased P adsorption on ZFA and FA was observed between incubation times of 7 and 14 days. The sequential desorption procedure verified the trend of P adsorption capacities and showed that the plant‐available P (NaHCO3‐P) amounted to 1.34, 2.34 and 1.69 mg g−1 CaT‐Z, ZFA and FA, respectively. After 14 days, CaT‐Z and ZFA adsorbed much more K (19.2 and 20.5 mg g−1, respectively) than FA (4.3 mg g−1). The desorption of exchangeable K confirmed this difference. Scanning electron microscopy–energy dispersive spectrometry analyses indicated P adsorption and surface precipitation as Ca–P phases as well as K+ for Ca2+ ion exchange on the loaded adsorbents. CONCLUSIONS ZFA was more efficient for dual adsorption combining the properties of the zeolitic fraction (enhanced K adsorption) and pristine FA (P adsorption on Ca‐bearing phases). The sufficient concentrations of plant‐available P and K on the three adsorbents suggest their potential use as soil amendments. © 2022 Society of Chemical Industry (SCI).

show abstract

Removal of iodide from water using silver nanoparticles-impregnated synthetic zeolites

Cited by 54 publications

References 43 publications

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Surface Interactions and Mechanisms Study on the Removal of Iodide from Water by Use of Natural Zeolite-Based Silver Nanocomposites

Scavenging Radionuclide by Shapeable Porous Materials

Phosphorus and potassium recovery from anaerobically digested olive mill wastewater using modified zeolite, fly ash and zeolitic fly ash: a comparative study

Contact Info

Product

Resources

About