Simultaneous removal of arsenic and mercury from natural-gas-co-produced water from the Gulf of Thailand using synergistic extractant via HFSLM

Lothongkum, Anchaleeporn Waritswat; Suren, Sira; Chaturabul, Srestha; Thamphiphit, Nopphawat; Pancharoen, Ura

doi:10.1016/j.memsci.2010.12.013

Cited by 62 publications

(13 citation statements)

References 37 publications

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“…(8) Where Qo and b are Langmuir constants, the constant Qo is related to the monolayer adsorption capacity in mol.g -1 and b is the binding constant in L.mol -1 related to equilibrium enthalpy constant. The adsorption of Cr(VI) over different adsorbent is studied and this was found that the Langmuir isotherm model fitted the data well on most of the adsorption studies of the present work.…”

Section: Freundlich Isothermmentioning

confidence: 99%

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Kinetic and Equilibrium Studies of Cr (VI) Removal from Tannery Effluent using Green Adsorbents

2017

JECET

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Green Adsorbents were derived from Neem bark for the removal of Cr (VI) from leather industry effluent. The carcinogenicity of Cr (VI) in tannery effluent is a serious threat to human health.. In the present study Neem Bark modified with solvents and after carbonization structures have been evaluated for their adsorption efficiency evaluation for the removal of heavy metal Cr (VI). The equilibrium and kinetic experiments were performed in batch mode. The equilibrium data was fitted with Langmuir and Freundlich models. Several operation variables such as adsorbent dosage, contact time, initial pH, and temperature on the removal of Cr (VI) were investigated. The removal efficiency increased with increase in adsorbent dosage. The adsorption process followed pseudo second order kinetics. Thermodynamic parameters like H, S and G were analysed. The processes were spontaneous for the removal of Cr (VI). These results suggest that adsorbents used are potential and green adsorbents for tannery industry waste water treatment.

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Section: Freundlich Isothermmentioning

confidence: 99%

“…Attention has been paid for the removal heavy metal ions, especially toxic ions such as chromium [1][2][3] , cadmium 4,5 , mercury 6,7 , arsenic 8,9 and lead 10,11 from the environment.…”

Section: Introductionmentioning

confidence: 99%

Kinetic and Equilibrium Studies of Cr (VI) Removal from Tannery Effluent using Green Adsorbents

2017

JECET

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“…Sangtumrong [ 47 ] obtained the concomitant separation of Hg(II) and As(III) ions from chloride media using an HFSLM system. The presence of both toxic metals is a relevant environmental pollution problem especially for oil and gas deposits in the Gulf of Thailand [ 48 ]. Hg(II) and As(III) compounds are supposed to originate in petroleum, carbonaceous shale, and tin stones in/near reservoirs, leading, consequently, to contaminated water [ 49 ].…”

Section: Liquid Membranesmentioning

confidence: 99%

“…Lothongkum et al [ 48 ] operated the simultaneous separation of arsenic and mercury ions from natural gas coproduced using a HFSLM system. The effect of several extractant compounds such as Aliquat 336, Cyanex 923, and Cyanex 471 (tri-isobutylphosphine sulphide) dissolved in toluene was investigated.…”

Section: Liquid Membranesmentioning

confidence: 99%

Arsenic Removal by Liquid Membranes

Marino

Figoli

2015

Membranes

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Water contamination with harmful arsenic compounds represents one of the most serious calamities of the last two centuries. Natural occurrence of the toxic metal has been revealed recently for 21 countries worldwide; the risk of arsenic intoxication is particularly high in Bangladesh and India but recently also Europe is facing similar problem. Liquid membranes (LMs) look like a promising alternative to the existing removal processes, showing numerous advantages in terms of energy consumption, efficiency, selectivity, and operational costs. The development of different LM configurations has been a matter of investigation by several researching groups, especially for the removal of As(III) and As(V) from aqueous solutions. Most of these LM systems are based on the use of phosphine oxides as carriers, when the metal removal is from sulfuric acid media. Particularly promising for water treatment is the hollow fiber supported liquid membrane (HFSLM) configuration, which offers high selectivity, easy transport of the targeted metal ions, large surface area, and non-stop flow process. The choice of organic extractant(s) plays an essential role in the efficiency of the arsenic removal. Emulsion liquid membrane (ELM) systems have not been extensively investigated so far, although encouraging results have started to appear in the literature. For such LM configuration, the most relevant step toward efficiency is the choice of the surfactant type and its concentration.

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“…Moreover, HFSLM is also easily scalable [11] and it can improve the lifetime of the liquid membrane system due to their hydrodynamic characteristics [12]. Many works concerned with simultaneous extraction and recovery of metal ions via HFSLM have recently been reported [13]- [15].…”

mentioning

confidence: 99%

State of the Art Hollow Fiber Supported Liquid Membrane on Pd (II) Separation from Wastewater Using Alamine 336

Wongkaew¹,

Leepipatpiboon²,

Pancharoen³

2014

IJCEA

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Simultaneous removal of arsenic and mercury from natural-gas-co-produced water from the Gulf of Thailand using synergistic extractant via HFSLM

Cited by 62 publications

References 37 publications

Kinetic and Equilibrium Studies of Cr (VI) Removal from Tannery Effluent using Green Adsorbents

Kinetic and Equilibrium Studies of Cr (VI) Removal from Tannery Effluent using Green Adsorbents

Arsenic Removal by Liquid Membranes

State of the Art Hollow Fiber Supported Liquid Membrane on Pd (II) Separation from Wastewater Using Alamine 336

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