Removal of Cu(II) from leachate using natural zeolite as a landfill liner material

Turan, Nurdan Gamze; Ergun, Osman Nuri

doi:10.1016/j.jhazmat.2009.01.047

Cited by 32 publications

(17 citation statements)

References 32 publications

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“…It is well understood that zeolite has relatively high adsorption capacity for metals (Turan and Ergun, 2009;Hamidpour et al, 2010;Delkash et al, in press); therefore, zeolites are used extensively as adsorbents for removal of cations (ammonium and heavy metals) in wastewater as well as amendments in compacted soil liners and sandy soil/Na-bentonite slurry-trench cutoff walls for waste containment (Kayabali, 1997;Kaya and Durukan, 2004;Jin et al, 2010;Hong et al, 2011;Ören et al, 2011;Reddy et al, 2014). This beneficial use is due to the fact that the open framework, honeycomb structures, and the isomorphous substitution of Si 4+ by Al 3+ enhance the molecular sieve action and catalytic behavior of the natural zeolites (Kayabali, 1997;Ören et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Workability, compressibility and hydraulic conductivity of zeolite-amended clayey soil/calcium-bentonite backfills for slurry-trench cutoff walls

Fan

Liu

et al. 2015

Engineering Geology

102

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Section: Introductionmentioning

confidence: 99%

Workability, compressibility and hydraulic conductivity of zeolite-amended clayey soil/calcium-bentonite backfills for slurry-trench cutoff walls

Fan

Liu

et al. 2015

Engineering Geology

102

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“…

q_{t} = k_{id} t^{1 / 2}

where q t is the amount adsorbed (mg g −1 ) at time, t (min), and k id (mg g −1 h −1/2 ) is the intraparticle diffusion rate constant. The rate of uptake might be partial by the mass of adsorbate molecule, concentration of the adsorbate and its affinity to the adsorbent, diffusion coefficient of the dyes in the bulk phase, the pore‐size distribution of the adsorbent . According to Eq.…”

Section: Resultsmentioning

confidence: 99%

Kinetics and isotherm studies on acid dye adsorption using thermal and chemical activated Jatropha husk carbons

Karthick

Namasivayam

Pragasan

2017

Env Prog and Sustain Energy

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Activated carbon was prepared from Jatropha husk, as a biodiesel byproduct waste, by physical (JHC) and chemical (ZnCl2) activation (ZAJHC), as an adsorbent for the removal of acid dye Acid blue 83 (AB83). Batch adsorption experiments were carried out to study the effects of various physicochemical parameters such as contact time, initial dye concentration, adsorbent dose, and initial solution pH. The AB83 loaded and unloaded adsorbent materials were characterized by SEM, EDX, XRD, and FTIR. Lagergren first‐order, Pseudo second‐order, Intraparticle diffusion and Bangham's models were used to evaluate the kinetics and mechanism of the adsorption. The Langmuir, Freundlich, and D–R isotherm models were tested to represent the equilibrium data and the constants of the isotherms were determined by using the experimental data. Normalized deviation (Δq) is used to quantify the correlation of experimental results with the models. The maximum adsorption capacity (Qo) obtained was 7.59 and 27.93 mg g−1 at a temperature of 35°C for JHC and ZAJHC, respectively. The favorable pH for maximum AB83 adsorption was pH 2.0 for both JHC and ZAJHC. The desorption studies discovered that the regeneration and reusability of the adsorbent can be easily achieved. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 719–732, 2018

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“…Bentonite mainly consists of montmorillonite, with an arrangement of two tetrahedral sheets from SiO4 which coincide with an octahedral sheet of Al 3+ (Fe 2+ /Mg 2+ ) [10], [19]. However, there are some problems with the use of pure bentonite as a liner, such as shrinkage and low shear stability [20], [21].…”

Section: Introductionmentioning

confidence: 99%

The potential of semi-permeable bentonite and zeolite composite on the reduction of Pb (II) concentration in landfill

et al. 2020

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An alternative material that could be used as a liner, which can avert the heavy metal migration from landfill to soil, is the combination between bentonite and zeolite. This study aims to analyze the Pb2+ adsorption capacity of the liner and permeability of bentonite with the addition of zeolite in several percentages. There were four different types of composite in the experiment, such as pure bentonite (BZ0), bentonite + zeolite 2% (BZ2), bentonite + zeolite 5% (BZ5), and bentonite + zeolite 8% (BZ8). Bentonite and zeolite composite was inserted into a cylindrical reactor, which was compacted to adjust the condition of the study to be similar with existing condition in the landfill. This study was conducted until the leachate produced and lead concentration was tested using samples from the liner and leachate in the outlet. The results showed that the highest efficiency of lead reduction was obtained from BZ8 with the percentage of 95.2%, while the highest permeability coefficient was found in BZ8 with the value of 7.76 x 10−11 cm/s. The addition of zeolite has been proven to be able to reduce the lead concentration of leachate, but it increased the possibility of leakage.

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Removal of Cu(II) from leachate using natural zeolite as a landfill liner material

Cited by 32 publications

References 32 publications

Workability, compressibility and hydraulic conductivity of zeolite-amended clayey soil/calcium-bentonite backfills for slurry-trench cutoff walls

Workability, compressibility and hydraulic conductivity of zeolite-amended clayey soil/calcium-bentonite backfills for slurry-trench cutoff walls

Kinetics and isotherm studies on acid dye adsorption using thermal and chemical activated Jatropha husk carbons

The potential of semi-permeable bentonite and zeolite composite on the reduction of Pb (II) concentration in landfill

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