Application of micellar enhanced ultrafiltration (MEUF) process for zinc (II) removal in synthetic wastewater: Kinetics and two-parameter isotherm models

Lee, Seung Hwan; Shrestha, Sohan

doi:10.1016/j.ibiod.2014.03.016

Cited by 23 publications

(4 citation statements)

References 19 publications

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“…Therefore, the kinetic adsorption was fitted well to the pseudo-second-order model, with R 2 value of 0.9994 for the bio adsorption system. This model, based on the chemisorption mechanism for metal ions interaction with adsorbent surface, was suggested as the rate-limiting step in HAP48 adsorbent [40]. This mechanism also described the physicochemical interactions between the two phases [41].…”

Section: Kinetic Adsorption Studymentioning

confidence: 98%

Synthesis and Characterization of Hydroxyapatite From Bulk Seashells and Its Potential Usage as Lead Ions Adsorbent

2017

MJAS

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In the present work, hydroxyapatite (HAP) powder was successfully synthesized via the thermal decomposition and subsequent wet precipitation (with different experimental reaction times of 3, 5, 24, 48, and 72 hours of bulk seashells. We found that the reaction time during wet precipitation stage affected the physical and chemical properties of HAPs adsorbents. HAP synthesized with a reaction time of 48 hours showed the highest removal of Pb 2+ ions (99.1%) and is highly potential to be used as bio adsorbent material in heavy metal wastewater treatment.

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Section: Kinetic Adsorption Studymentioning

confidence: 98%

Synthesis and Characterization of Hydroxyapatite From Bulk Seashells and Its Potential Usage as Lead Ions Adsorbent

2017

MJAS

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“…The Freundlich isothermal model describes capturing of Pb (II) as an ionic exchange by multilayer sites at a heterogeneous surface. This model is expressed in a linearized form using Equation 5 [22], [24]:…”

Section: -Introductionmentioning

confidence: 99%

A Comparison Study for The Performance of Polyethersulfone Ultrafiltration Mixed Matrix Membranes in The Removal of Heavy Metal Ions from Aqueous Solutions

Abdulameer

Al‐Jubouri²

2022

IJCPE

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Polyethersulfone (PES) ultrafiltration membrane blending NaX zeolite crystals as a hydrophilic additive was examined for zinc (II) and lead ions Pb (II) removal from aqueous solutions. The effect of NaX zeolite content on the permeation flux and removal efficiency was studied. The results showed that adding zeolite to the polymer matrix enhanced the permeation flux. The permeation flux of all the zeolite/PES matrix membranes was higher than the pristine membrane. No significant improvement was observed in the removal of Zn (II) ions using all prepared membranes as the removal percentage did not raise above 29.2%. However, the removal percentage of Pb (II) ions was enhanced to 97% using a membrane containing 0.9%wt. zeolite. Also, it was found that this membrane has a higher ion exchange capacity than the other prepared membranes. Two isotherm models (Langmuir model, and Freundlich model) were employed in the analysis of the ion exchange equilibrium data. The experimental data best fitted the Langmuir model with R2 of 0.889 than the Freundlich model.

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“…Similarly, chemical production has produced a significant amount of aniline wastewater. Such wastewater produces ecological hazards and threatens the human population's health [1][2][3]. The current aniline wastewater treatment methods mainly include chemical methods, physical methods, and biological methods [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Study of the Removal of Aniline from Wastewater via MEUF Using Mixed Surfactants

Zhang²,

Chai

et al. 2017

Water

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Abstract:In this paper, the anionic surfactant sodium dodecyl sulfate (SDS) and the bio-surfactant rhamnolipid are mixed to achieve micellar-enhanced ultrafiltration, and the associated aniline removal efficiency is investigated. The impacts of five factors, including the mixing ratio of the SDS concentration to the rhamnolipid concentration, the pH, the salinity, the operating pressure, and the aniline concentration in the feed solution, on the aniline rejection and the membrane permeation flux are explored. The aniline rejection mechanism of the rhamnolipid mixture surfactant is analyzed. This study shows that the effect of these factors on the aniline rejection is in the order of pH > mixing ratio > operating pressure > aniline concentration > salinity; the factors that affect the membrane permeation flux are in the order of mixing ratio > operating pressure > salinity > pH > aniline concentration. Under the optimal test conditions (i.e., SDS:rhamnolipid = 8:2, pH = 5, salinity = 250 mmol/L, operating pressure = 3.5 bar, aniline concentration = 1.5 mM), the verification test results showed an aniline rejection of 78.36%.

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Application of micellar enhanced ultrafiltration (MEUF) process for zinc (II) removal in synthetic wastewater: Kinetics and two-parameter isotherm models

Cited by 23 publications

References 19 publications

Synthesis and Characterization of Hydroxyapatite From Bulk Seashells and Its Potential Usage as Lead Ions Adsorbent

Synthesis and Characterization of Hydroxyapatite From Bulk Seashells and Its Potential Usage as Lead Ions Adsorbent

A Comparison Study for The Performance of Polyethersulfone Ultrafiltration Mixed Matrix Membranes in The Removal of Heavy Metal Ions from Aqueous Solutions

Study of the Removal of Aniline from Wastewater via MEUF Using Mixed Surfactants

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