Removal of metal ions at low concentration by micellar-enhanced ultrafiltration (MEUF) using sodium dodecyl sulfate (SDS) and linear alkylbenzene sulfonate (LAS)

2009 ◽  
Vol 65 (3) ◽  
pp. 337-342 ◽  
Author(s):  
E. Samper ◽  
M. Rodríguez ◽  
M.A. De la Rubia ◽  
D. Prats
Keyword(s):  
Sodium Dodecyl Sulfate ◽  
Metal Ions ◽  
Linear Alkylbenzene Sulfonate ◽  
Sodium Dodecyl ◽  
Linear Alkylbenzene ◽  
Low Concentration ◽  
Alkylbenzene Sulfonate ◽  
Micellar Enhanced Ultrafiltration ◽  
Removal Of Metal ◽  
Removal Of Metal Ions

scholarly journals Removal of metal ions from aqueous solutions by micellar enhanced ultra-filtration (MEUF)

2010 ◽  
Vol 12 (3) ◽  
pp. 62-65 ◽  
Author(s):  
Katarzyna Staszak ◽  
Beata Redutko ◽  
Krystyna Prochaska
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Cross Flow ◽  
Feed Solution ◽  
Micellar Solutions ◽  
Separation Of Metal Ions ◽  
Ultra Filtration ◽  
Micellar Enhanced Ultrafiltration ◽  
Removal Of Metal ◽  
Removal Of Metal Ions

Removal of metal ions from aqueous solutions by micellar enhanced ultra-filtration (MEUF) The results of preliminary research on the possibility of removing of chromium(III) and copper(II) ions from micellar solutions in MEUF were described. The effectiveness of metal ions removal in the classical UF and MEUF was compared. It was confirmed that in the classical UF the retention of metal ions is small, independent of the concentration of the feed solution. The cross-flow micellar enhanced ultrafiltration experiments showed the usefulness of this method for the separation of metal ions from micellar solutions. The retention of metal ions in MEUF process is almost total in the case of the solutions of low concentration. However, for more concentrated solutions the retention is much smaller.

scholarly journals Simultaneous removal of metal ions and oxidation of linear alkylbenzene sulfonate by combined electrochemical and photocatalytic processes

2021 ◽  
Author(s):  
Mitra Saidi
Keyword(s):  
Metal Ions ◽  
Flow Rate ◽  
Linear Alkylbenzene Sulfonate ◽  
Considerable Effect ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Combined System ◽  
Linear Alkylbenzene ◽  
Photocatalytic System ◽  
Alkylbenzene Sulfonate

Simultaneous electrochemical removal of Zn⁺₂ and Ni⁺₂ ions and photooxidation of linear alkylbenzene sulfonate (LAS) over TiO₂ particles were investigated. To achieve this objective, first, the effect of different variables such as current density, pH and flow rate on sole electrochemical reduction of metal ions was studied. Both controlling pH in the range of 5.5-6 and increasing the liquid volumetric flux effectively improved the rate of Zn⁺₂ ion reduction, but they did not have any significant effect on the rate of Ni⁺₂ ion reduction. Under optimum operating conditions ... and using total electrolyte volume of 6 L, zinc and nickel were reduced by 86% and 53% respectively, over a 7-hour treatment period. Sole photocatalytic treatment of LAS and controlling pH between 5-5.5 resulted in 60% LAS degradation. However, temperature and flow rate did not have any considerable effect on the rate of LAS degradation compared to the photocatalytic system alone. LAS was degraded in the combined system by 76% compared to 60% in the sole photocatalytic system. However, using the combined system, zinc and nickel were reduced by 81% and 47% respectively, which were slightly less than those obtained in the electrochemical system alone.

scholarly journals Simultaneous removal of metal ions and oxidation of linear alkylbenzene sulfonate by combined electrochemical and photocatalytic processes

2021 ◽  
Author(s):  
Mitra Saidi
Keyword(s):  
Metal Ions ◽  
Flow Rate ◽  
Linear Alkylbenzene Sulfonate ◽  
Considerable Effect ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Combined System ◽  
Linear Alkylbenzene ◽  
Photocatalytic System ◽  
Alkylbenzene Sulfonate

Simultaneous electrochemical removal of Zn⁺₂ and Ni⁺₂ ions and photooxidation of linear alkylbenzene sulfonate (LAS) over TiO₂ particles were investigated. To achieve this objective, first, the effect of different variables such as current density, pH and flow rate on sole electrochemical reduction of metal ions was studied. Both controlling pH in the range of 5.5-6 and increasing the liquid volumetric flux effectively improved the rate of Zn⁺₂ ion reduction, but they did not have any significant effect on the rate of Ni⁺₂ ion reduction. Under optimum operating conditions ... and using total electrolyte volume of 6 L, zinc and nickel were reduced by 86% and 53% respectively, over a 7-hour treatment period. Sole photocatalytic treatment of LAS and controlling pH between 5-5.5 resulted in 60% LAS degradation. However, temperature and flow rate did not have any considerable effect on the rate of LAS degradation compared to the photocatalytic system alone. LAS was degraded in the combined system by 76% compared to 60% in the sole photocatalytic system. However, using the combined system, zinc and nickel were reduced by 81% and 47% respectively, which were slightly less than those obtained in the electrochemical system alone.

Pemanfaatan Metil Ester Sulfonat pada Pembuatan Deterjen Cair

2016 ◽  
Vol 7 (14) ◽  
pp. 143-155
Author(s):  
Eldha Sampepana ◽  
Suroto Hadi Saputra
Keyword(s):  
Fatty Acids ◽  
Methyl Ester ◽  
Linear Alkylbenzene Sulfonate ◽  
Emulsion Stability ◽  
Alcohol Sulfate ◽  
Stable Emulsion ◽  
Linear Alkylbenzene ◽  
Alkylbenzene Sulfonate ◽  
The Stability ◽  
The Right

In the manufacture of detergents still using surfactants (which serves as an emulsifier) of crude oil in the form of the AS. (alcohol sulfate) and LAS (linear alkylbenzene sulfonate), where this type of surfactant cannot be degraded by microorganisms when discharged into the environment, causing environmental pollution. Methyl ester sulfonate surfactant is an anionic surfactant which has a composition of C16 - C18 fatty acids are capable of acting against nature deterjensinya, while the C12 - C14 fatty acids contribute to the foaming effect. The purpose of this study was to look for the formulation of methyl ester sulfonate (MES) the right to produce a good detergent by using materials such as methyl ester sulfonate surfactant self-made, methyl ester sulfonate and sodium lauryl market Ester Sulfate (SLS) with a concentration of 15 %, 20 % and 25 %. Detergent results of the study have high detergency ( net ) compared with the detergency of detergent commercial, have a stable emulsion stability, the stability of the foam/foam detergent power made from methyl ester sulfonate surfactant produces less foam, compared with a detergent made from SLS and surfactant SNI 06-4075-1996 standards.

Utilization of Polysaccharides and their Derivatives in the Removal of Metal Ions: Role and Recent Advancement

2020 ◽  
Vol 13 ◽  
Author(s):  
Rishabha Malviya ◽  
Pramod Sharma ◽  
Akanksha Sharma
Keyword(s):  
Waste Water ◽  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Waste ◽  
Heavy Metal Ions ◽  
Environmental Hazards ◽  
Industrial Waste Water ◽  
Recent Advancement ◽  
Removal Of Metal ◽  
Removal Of Metal Ions

: Manuscript discussed about the role of polysaccharides and their derivatives in the removal of metal ions from industrial waste water. Quick modernization and industrialization increases the amount of various heavy metal ions in the environment. They can possess various disease in humans and also causes drastic environmental hazards. In this review the recent advancement for the adsorption of heavy metal ions from waste water by using different methods has been studied. Various natural polymers and their derivatives are act as effective adsorbents for the removal of heavy metal ions from the waste water released from the industries and the treated water released into the environment can decreases the chances of diseases in humans and environmental hazards. From the literature surveys it was concluded that the removal of heavy metal ions from the industrial waste water was important to decrease the environmental pollution and also diseases caused by the heavy metal ions. Graft copolymers were acts as most efficient adsorbent for the removal of heavy metal ions and most of these followed the pseudo first order and pseudo second order model of kinetics.

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