Removal characteristics of metal cations and their mixtures using micellar-enhanced ultrafiltration

Kim, Hojeong; Baek, Kitae; Kim, Bo-Kyong; Shin, Hyun‐Jae; Yang, Ji‐Won

doi:10.1007/s11814-008-0045-y

Cited by 29 publications

(6 citation statements)

References 25 publications

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“…Several technologies are available in literature for the removal of heavy metals from industrial wastewater (Anand et al, 1985 ; Kim et al, 1985 ; Murphy and Erkey, 1997 ; Monser and Adhoum, 2002 ; Erdem et al, 2004 ; Golder et al, 2007 ; Lin et al, 2008 ; Yuan et al, 2008 ), which include coagulation/flocculation, adsorption, reverse osmosis, and biological treatment. Of all these techniques, adsorption is the most efficient and versatile for removal of heavy metal.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of Adsorbents from Coal and Irvingia gabonensis Seed Shell for the Removal of Cd(II) and Pb(II) Ions from Aqueous Solutions

2018

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Cd(II) and Pb(II) ions removal using adsorbents prepared from sub-bituminous coal, lignite, and a blend of coal and Irvingia gabonensis seed shells was investigated. Fourier transform infrared, scanning electron microscope and X-ray fluorescence analyses implicated hydroxyl, carbonyl, Al2O3, and SiO2 as being responsible for attaching the metal ions on the porous adsorbents. The optimum adsorption of carbonized lignite for the uptake of Cd(II) and Pb(II) ions from aqueous media were 80.93 and 87.85%, respectively. Batch adsorption was done by effect of adsorbent dosage, pH, contact time, temperature, particle size, and initial concentration. Equilibrium for the removal of Pb(II) and Cd(II) was established within 100 and 120 min respectively. Blending the lignite-derived adsorbent with I. gabonensis seed shell improved the performance significantly. More improvement was observed on modification of the blend using NaOH and H3PO4. Pb(II) was preferentially adsorbed than Cd(II) in all cases. Adsorption of Cd(II) and Pb(II) ions followed Langmuir isotherm. The adsorption kinetics was best described by pseudo-second order model. The potential for using a blend of coal and agricultural byproduct (I. gabonensis seed shell) was found a viable alternative for removal of toxic heavy metals from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of Adsorbents from Coal and Irvingia gabonensis Seed Shell for the Removal of Cd(II) and Pb(II) Ions from Aqueous Solutions

2018

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“…MEUF has been developed which combines high flux of ultrafiltration and high rejection percentage of nanofiltration and RO, simultaneously. This method has already been used to remove heavy metals [8][9][10][11][12][13][14][15][16][17], organic materials [14,[18][19][20][21], and treat industrial wastewaters like soft drink [22], raisin [23], olive oil [24] and edible oil [25].…”

Section: Desalination and Water Treatmentmentioning

confidence: 99%

Micellar-enhanced ultrafiltration of dairy wastewater with anionic and nonionic surfactants

Salmani

2016

Desalination and Water Treatment

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To cite this article: Hossein Jalaei salmani (2015): Micellar-enhanced ultrafiltration of dairy wastewater with anionic and nonionic surfactants, Desalination and Water Treatment, In this study, the potential of MEUF process has been analyzed to treat a real dairy wastewater. For this purpose, linear alkylbenzene sulfonate (LAS) and Triton X-100 (TX-100) have been used as anionic and nonionic surfactants, respectively. The ranges of 23.5 bars and 0-4 mM are selected for transmembrane pressure (TMP) and surfactants concentration, respectively, to investigate their effects on the permeate flux as a function of operating time. Moreover, it is revealed experimentally that rejection of pollution indices including chemical oxygen demand (COD) and total dissolved solid (TDS) is affected by TMP and feed surfactant concentration, while turbidity is remained relatively unchanged. According to the experimental results analysis, the increase of feed surfactant concentration has negative and positive effects on the permeate flux and rejection efficiency, respectively. TMP enhancement also leads to the higher flux values but it does not necessarily improve the rejection. Furthermore, the effectiveness of anionic surfactant in pollution indices elimination is more than the nonionic one. In the treatment combination assessed for the factors, the best rejection values of COD, TDS, and turbidity using LAS surfactant with polyacrylonitrile (PAN-350) 20-kDa poly(ethylene glycol) membrane are almost 93, 52, and 99.9%, respectively.

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“…Anyway, pore size of ultrafiltration (UF) membranes results larger in diameter than dissolved metal ions, so they can easily pass through permeate flux, without obtaining satisfactory retention coefficient. To achieve high removal efficiency, the addition of surfactants to wastewater is necessary, realizing the so called Bmicellar-enhanced ultrafiltration (MEUF)^, which permits to gain retention coefficient of almost 99 % (Baek et al 2003;Fillipi et al 1999;Huang et al 2009;Xiarchos et al 2008;Kim et al 2008). As a rule, these extreme performances can be reached in a particular condition, when surfactant active agent is added to liquid stream in higher amount than critical micellar concentration (CMC); from this value on, in solution, some micelles are formed.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Removal from Liquid Wastes by Using Micellar-Enhanced Ultrafiltration

Tortora

Innocenzi

Prisciandaro

et al. 2016

Water Air Soil Pollut

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Wastewaters from civil and industrial use, which contain high concentration of heavy metals, pose the problem for their correct disposal. They cannot be directly discharged in sewage systems, as metal ions represent a serious problem not only for human health but also for the environment. In this paper, the removal of nickel, cobalt, chromium, and zinc ions from synthetic liquid wastes was carried out, by using a micellarenhanced ultrafiltration (MEUF) process; an ultrafiltration (UF) membrane (a monotubular ceramic of molecular weight cutoff 210 kDa) together with sodium dodecyl sulfate (SDS) as an anionic surfactant was used, in a lab-scale experimental device. The synthetic liquid contained 10-mg/L metal ions (Cr, Zn, Co, Ni), while SDS concentration varied from values above and below critical micellar concentration (CMC). The experiments were carried out at room temperature (25°C). Results achieved showed that SDS was able to bind metal ions, resulting in a strong increase of rejection coefficient, which reached highest values in case of SDS concentration below CMC, unexpectedly.

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Removal characteristics of metal cations and their mixtures using micellar-enhanced ultrafiltration

Cited by 29 publications

References 25 publications

Preparation and Evaluation of Adsorbents from Coal and Irvingia gabonensis Seed Shell for the Removal of Cd(II) and Pb(II) Ions from Aqueous Solutions

Preparation and Evaluation of Adsorbents from Coal and Irvingia gabonensis Seed Shell for the Removal of Cd(II) and Pb(II) Ions from Aqueous Solutions

Micellar-enhanced ultrafiltration of dairy wastewater with anionic and nonionic surfactants

Heavy Metal Removal from Liquid Wastes by Using Micellar-Enhanced Ultrafiltration

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