Adsorption of cadmium using modified zeolite-supported nanoscale zero-valent iron composites as a reactive material for PRBs

Tasharrofi, Saeideh; Rouzitalab, Zahra; Maklavany, Davood Mohammady; Esmaeili, Ali; Rabieezadeh, Mohammadmehdi; Askarieh, Mojtaba; Rashidi, Alimorad; Taghdisian, Hossein

doi:10.1016/j.scitotenv.2020.139570

Cited by 78 publications

(25 citation statements)

References 84 publications

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“…3a. The small peak observed around 3638 cm −1 can be assigned to the dissociation of O-H and the symmetric and asymmetric OH stretching vibration (Ruiz-Baltazar et al 2015;Tasharrofi et al 2020). The peaks around 3407 and 1656 cm −1 are related to the H-O-H stretching vibration and O-H bending vibration of clinoptilolite water molecules.…”

Section: Characterizationmentioning

confidence: 93%

Removal of arsenate using graphene oxide-iron modified clinoptilolite-based composites: adsorption kinetic and column study

Baskan

Hadimlioglu²

2021

J Anal Sci Technol

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In this study, graphene oxide (GO), iron modified clinoptilolite (FeZ), and composites of GO-FeZ (GOFeZA and GOFeZB) were synthesized and characterized using SEM, EDS, XRF, FTIR, and pHpzc. The arsenate uptake on composites of GOFeZA and GOFeZB was examined by both kinetic and column studies. The adsorption capacity increases with the increase of the initial arsenate concentration at equilibrium for both composites. At the initial arsenate concentration of 450 μg/L, the arsenate adsorption on GOFeZA and GOFeZB was 557.86 and 554.64 μg/g, respectively. Arsenate adsorption on both composites showed good compatibility with the pseudo second order kinetic model. The adsorption process was explained by the surface complexation or ion exchange and electrostatic attraction between GOFeZA or GOFeZB and arsenate ions in the aqueous solution due to the relatively low equilibrium time and fairly rapid adsorption of arsenate at the beginning of the process. The adsorption mechanism was confirmed by characterization studies performed after arsenate was loaded onto the composites. The fixed-bed column experiments showed that the increasing the flow rate of the arsenate solution through the column resulted in a decrease in empty bed contact time, breakthrough time, and volume of treated water. As a result of the continuous operation column study with regenerated GOFeZA, it was demonstrated that the regenerated GOFeZA has lower breakthrough time and volume of treated water compared to fresh GOFeZA.

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Section: Characterizationmentioning

confidence: 93%

Removal of arsenate using graphene oxide-iron modified clinoptilolite-based composites: adsorption kinetic and column study

Baskan

Hadimlioglu²

2021

J Anal Sci Technol

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“…Some novel techniques have also been developed by integrating conventional treatments with modern technologies, such as nano-material technology [38]. It is reported that permeable reactive barriers (PRBs) with nano zero-valent iron (nZVI) immobilization and packaging materials have a good capability to improve the decontamination efficiency [39,40]. Also, the performance of PRBs filled with nZVI was satisfactory in the removal of heavy metal ions, such as mercury, chromium, lead, zinc, nickel, and copper, and the percentage of removal was usually > 90% [40].…”

Section: Sediment Dredgingmentioning

confidence: 99%

“…It is reported that permeable reactive barriers (PRBs) with nano zero-valent iron (nZVI) immobilization and packaging materials have a good capability to improve the decontamination efficiency [39,40]. Also, the performance of PRBs filled with nZVI was satisfactory in the removal of heavy metal ions, such as mercury, chromium, lead, zinc, nickel, and copper, and the percentage of removal was usually > 90% [40]. Traditionally, the PRBs have dimensions of < 5 m in width (parallel to flow), 10 m in depth, and 50 m in length (transverse to flow), and these barriers are filled with reactive media.…”

Section: Sediment Dredgingmentioning

confidence: 99%

“…Compared with the previous vertical installation method, it can dramatically drive down treatment costs and achieve better interception of pollutants in surface water. As the contaminants move through the nZVI/biochar material, the reaction occurs that transforms the contaminants into less harmful (non-toxic) or + by nZVI and the addition of biochar could be favorable for this process, as NO 3 − can be selectively reduced to N 2 instead of NH 4 + [39,40]. The PRBs are a barrier to the contaminants rather than a barrier to the groundwater.…”

Section: Key Technologies and Equipment For Integrated Remediationmentioning

confidence: 99%

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Key technologies and equipment for contaminated surface/groundwater environment in the rural river network area of China: integrated remediation

Wang

Xue

et al. 2021

Environ Sci Eur

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To realize the integrated remediation of SW/GW and soil in the rural river network area, the integrated remediation in rural river network area project (IR-RRNA), funded by the Ministry of Science and Technology of the People’s Republic of China, has been launched. In eastern China, the rural river network area (RRNA) is an anthropic active area characterized by its rapid economic development and high gross national product. However, the water environmental pollution in these areas is increasingly severe, which has greatly hindered their sustainable development. Especially, the frequent interactions between surface/groundwater (SW–GW) have intensified the pollution migration and transformation in RRNA. The IR-RRNA (2019–2022) will apply the related interdisciplinary and methodological knowledge to elucidate the transportation and transformation of pollutants in water and soil during SW–GW interaction and develop remediation technologies of surface water, groundwater, and soil suitable for the RRNA. In this way, to realize the remediation technologies integration for surface/groundwater and soil in RRNA and implementing application demonstration. Meanwhile, a technical guideline will be compiled for the integrated remediation suitable for the RRNA. This project is conducive to addressing the urgent environmental problems as well as promoting rural economic revitalization and ecological environment optimization.

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“…In recent studies, it has been found that nanoscale zero‐valent iron (nZVI) has the advantage of rapid absorption, low pH dependency, facile separation, lower secondary pollution, and low cost. It is considered a promising material for future heavy metal removal treatments 3,4 . However, further applications of nZVI are currently shows a series of hurdles, including thermodynamic instability, oxidation and agglomeration, etc.…”

Section: Introductionmentioning

confidence: 99%

High‐efficiency adsorption of various heavy metals by tea residue biochar loaded with nanoscale zero‐valent iron

Liu

Zhang

Fan

et al. 2021

Env Prog and Sustain Energy

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Nanoscale zero‐valent iron (nZVI) loaded on tea residue biochar activated with phosphoric acid composites was synthesized. This adsorbent can efficiently adsorb multiple heavy metal ions such as Pb (II), Cr (III), Cu (II), and Ni (II) simultaneously. The adsorption process was found to follow the pseudo‐second‐order kinetic model. Equilibrium adsorption capacities reached 288.18, 162.34, 242.72, and 267.22 mg·g−1 for Pb(II), Cr(III), Cu(II), and Ni(II), respectively. The common interfering ions exhibited lower influence on its adsorption capacity. The adsorption mechanism includes reduction, ion exchange, surface complexation and precipitation. Furthermore, the waste adsorbent was converted into a catalyst in situ, which could catalyze the degradation of Congo red by establishing an electron transfer pathway. This research provides a new concept for the sustainable utilization of industrial tea residues and the harmless treatment of waste nZVI composite adsorbents.

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Adsorption of cadmium using modified zeolite-supported nanoscale zero-valent iron composites as a reactive material for PRBs

Cited by 78 publications

References 84 publications

Removal of arsenate using graphene oxide-iron modified clinoptilolite-based composites: adsorption kinetic and column study

Removal of arsenate using graphene oxide-iron modified clinoptilolite-based composites: adsorption kinetic and column study

Key technologies and equipment for contaminated surface/groundwater environment in the rural river network area of China: integrated remediation

High‐efficiency adsorption of various heavy metals by tea residue biochar loaded with nanoscale zero‐valent iron

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