COMPLEX DERIVED FROM THE MEDIUM ANIONIC POLYELECTROLYTE AND MEDIUM CATIONIC SURFACTANT � NEW COAGULANTS USED IN WASTEWATER TREATMENT

2011 ◽  
Author(s):  
Mihaela Mihai
Keyword(s):  
Wastewater Treatment ◽  
Cationic Surfactant ◽  
Anionic Polyelectrolyte

Viscoelastic Solutions of Wormlike Micelles of a Cationic Surfactant and a Stiff-Chain Anionic Polyelectrolyte

2019 ◽  
Vol 61 (6) ◽  
pp. 765-772 ◽  
Author(s):  
A. V. Shibaev ◽  
D. Yu. Mityuk ◽  
D. A. Muravlev ◽  
O. E. Philippova
Keyword(s):  
Cationic Surfactant ◽  
Wormlike Micelles ◽  
Anionic Polyelectrolyte ◽  
Stiff Chain

scholarly journals Purification of real car wash wastewater with complex coagulation/flocculation methods using polyaluminum chloride, polyelectrolyte, clay mineral and cationic surfactant

2019 ◽  
Vol 80 (10) ◽  
pp. 1902-1909 ◽  
Author(s):  
G. Veréb ◽  
V. E. Gayır ◽  
E. N. Santos ◽  
Á. Fazekas ◽  
Sz. Kertész ◽  
...  
Keyword(s):  
Clay Mineral ◽  
Cationic Surfactant ◽  
Color Removal ◽  
Ammonium Bromide ◽  
High Concentration ◽  
Polyaluminum Chloride ◽  
Anionic Polyelectrolyte ◽  
Sediment Volume ◽  
Car Wash ◽  
Car Wash Wastewater

Abstract In the present study, real car wash wastewater was purified by different coagulation/flocculation methods. As coagulant, polyaluminum chloride (‘BOPAC’), conventional iron(III) chloride, iron(III) sulfate, and aluminum(III) chloride were used, while as flocculant non-ionic and anionic polyelectrolytes were investigated. The effects of added clay mineral (Na-bentonite) and cationic surfactant (hexadecyltrimethyl ammonium bromide – ‘HTABr’) were also investigated. The use of BOPAC was significantly more effective than conventional coagulants. Extra addition of clay mineral was also beneficial in relation to both the sediment volume and sedimentation speed, while polyelectrolyte addition enhanced further the sedimentation. Moreover, the simultaneous addition of HTABr significantly enhanced the color removal efficiency due to the successful in-situ generation of organophilic bentonite. In summary, the application of 100 mg L−1 Na-bentonite with 20 mg L−1 Al3+ (from BOPAC) and 0.5 mg L−1 anionic polyelectrolyte resulted in the efficient reduction of the turbidity (4–6 NTU), the COD (158 mg L−1) and the extractable oil content (4 mg L−1) with efficiencies of 98%, 59%, and 85%, respectively. By applying organophilic bentonite in high concentration (500 mg L−1) with identical concentrations of BOPAC and anionic polyelectrolyte, significant color removal (5 times lower absorbance at λ = 400 nm) and 27% lower sediment volume were achieved.

Study of Adsorbed Monolayers of a Cationic Surfactant and an Anionic Polyelectrolyte at the Air−Water Interface

Langmuir ◽  
2003 ◽  
Vol 19 (14) ◽  
pp. 5680-5690 ◽  
Author(s):  
Nirmesh J. Jain ◽  
Pierre-Antoine Albouy ◽  
Dominique Langevin
Keyword(s):  
Cationic Surfactant ◽  
Water Interface ◽  
Anionic Polyelectrolyte ◽  
Air Water Interface

Phase behavior of a system of cationic surfactant and anionic polyelectrolyte: the effect of salt

1991 ◽  
Vol 95 (15) ◽  
pp. 6004-6011 ◽  
Author(s):  
Kyrre Thalberg ◽  
Bjoern Lindman ◽  
Gunnar Karlstroem
Keyword(s):  
Phase Behavior ◽  
Cationic Surfactant ◽  
Anionic Polyelectrolyte

Time-resolved fluorescence and self-diffusion studies in systems of a cationic surfactant and an anionic polyelectrolyte

1991 ◽  
Vol 95 (22) ◽  
pp. 8975-8982 ◽  
Author(s):  
Kyrre Thalberg ◽  
Jan Van Stam ◽  
Cecilia Lindblad ◽  
Mats Almgren ◽  
Bjoern Lindman
Keyword(s):  
Cationic Surfactant ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Self Diffusion ◽  
Anionic Polyelectrolyte ◽  
Diffusion Studies

scholarly journals Study of flocculation with PONILIT GT-2 anionic polyelectrolyte applied into a chemical wastewater treatment

2007 ◽  
Vol 5 (1) ◽  
pp. 239-256 ◽  
Author(s):  
Carmen Zaharia ◽  
Rodica Diaconescu ◽  
Mioara Surpăţeanu
Keyword(s):  
Wastewater Treatment ◽  
Mixing Time ◽  
Oxygen Demand ◽  
Ferric Sulfate ◽  
Operating Conditions ◽  
Color Removal ◽  
Process Efficiency ◽  
Ferric Ions ◽  
Turbidity Removal ◽  
Anionic Polyelectrolyte

AbstractThis paper discusses the applications of synthetic PONILIT GT-2 anionic polyelectrolyte in conjuction with ferric sulfate in a chemical wastewater treatment viz. wastewater from ceramics manufacturing. Synthetic wastewaters with different colloid concentrations were prepared and the coagulation-flocculation process followed by sedimentation and/or filtration was studied. Variables associated with the chemical wastewater composition, mixing time, and the coagulant and flocculant dose are considered in order to appreciate the process efficiency in terms of turbidity, chemical oxygen demand (COD), and color removal. The degrees are higher for turbidity and color (> 80 %) removal respectively, and, satisfactory for COD (3 type, considering ferric sulfate dose, polyelectrolyte dose, and mixing time as independent variables, while the turbidity and color removal efficiencies were chosen as optimization criteria. The empirical model was found adequate for the chemical wastewater treatment. Also, an analysis of the model was performed to find the optimal operating conditions, in order to apply this process for an efficient chemical wastewater treatment using ferric sulfate as coagulation agent and PONILIT GT-2 anionic polyelectrolyte as flocculation agent. The optimal values correspond to a ferric ions concentration of 6.093 mg/L, a polyelectrolyte dose of 0.651 mg/L, and a mixing time of 24.024 minutes for turbidity removal (95.869 %), respectively, and, to a ferric ions concentration of 6.01 mg/L, a polyelectrolyte dose of 0.69 mg/L, and a mixing time of 26 minutes for color removal (98.741 %).

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