Adsorption of Polyvinyl Acetate (PVAc) Adhesive Emulsion from Aqueous Solution by Lignin-Phenol Based Cationic Surfactant Modified Organic Kieselguhr

2014 ◽  
Vol 472 ◽  
pp. 861-866
Author(s):  
Cui Ping Mao ◽  
Shu Bin Wu
Keyword(s):  
Aqueous Solution ◽  
Cationic Surfactant ◽  
Cetyl Trimethyl Ammonium Bromide ◽  
Ammonium Bromide ◽  
Novel Approach ◽  
Organic Clay ◽  
The Mannich Reaction ◽  
Cetyl Trimethyl Ammonium ◽  
Dissolved And Colloidal Substances ◽  
Secondary Fibre

The kieselguhr was modified by the lignin-based cationic surfactant which obtained from the Mannich reaction. Modified organic kieselguhr exhibited favorable adsorption to adhesive and fine colloidal substance. Dissolved and colloidal substances (DCS) appeared in the secondary fibre reuse process interfered the pulping and papermaking seriously. The organic clay could remove the stickies substances through adsorption approach technically. In this paper, PVAc was chosen as the simulacrum of stickies because of its wide application as the adhesives in wood, textile, paint, paper processing and other industries. The organic kieselguhr was characterized by scanning electron microscope (SEM) and infrared spectrum (IR), etc. Then the adsorption experiment of PVAc emulsion from aqueous solution was carried out. 78.61% of the adhesive was absorbed by the organic kieselguhr, while the untreated clay only removed 53.41%. Common cationic surfactant, such as dodecyl trimethyl ammonium bromide (DTAB) and cetyl trimethyl ammonium bromide (CTAB), the modified clays were taken as the reference substance. The results indicated that the modified organic kieselguhr had well absorption efficacy to the stickies simulacrum, which provided a novel approach for the stickies controlling.

Effect of Surfactants on the Adsorption of Fluazinam in Soils

2011 ◽  
Vol 356-360 ◽  
pp. 190-194 ◽  
Author(s):  
Ai Lan Luo ◽  
Xian Jin Liu
Keyword(s):  
Cationic Surfactant ◽  
Anionic Surfactant ◽  
Contaminated Soils ◽  
Cetyl Trimethyl Ammonium Bromide ◽  
Practical Interest ◽  
Tween 80 ◽  
Innovative Technology ◽  
Ammonium Bromide ◽  
Cetyl Trimethyl Ammonium ◽  
Equilibrium Experiment

Soil contamination with pesticide has caused critical environmental and health defects and increasing attention has been paid for developing innovative technology for cleaning up this contamination. In this study, the effects of cationic surfactant cetyl trimethyl ammonium bromide, anionic surfactant sodium dodecylbenzenesulfonate, and non-ionic Tween 80 on the adsorption of fluazinam at the concentration of 1/2 CMC, 1 × CMC and 2 × CMC in three soils were evaluated by using batch equilibrium experiment. The K values followed the order as: S1 > S2 > S3 in absence of surfactants. The use of a nonionic surfactant considerably weaken the fluazinam retention, while that of cationic surfactant has the reverse trend. The effects of anionic surfactant on the adsorption of fluazinam in soils is related to soil physicochemical properties and anionic surfactant concentration. These results are of practical interest in developing effective surfactant remediation technology for fluazinam contaminated soils.

scholarly journals Preparation of Porous Hydroxyapatite Using Cetyl Trimethyl Ammonium Bromide as Surfactant for the Removal of Lead Ions from Aquatic Solutions

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1617
Author(s):  
Silviu-Adrian Predoi ◽  
Carmen Steluta Ciobanu ◽  
Mikael Motelica-Heino ◽  
Mariana Carmen Chifiriuc ◽  
Monica Luminita Badea ◽  
...  
Keyword(s):  
Cetyl Trimethyl Ammonium Bromide ◽  
Morphological Changes ◽  
Low Cost ◽  
Lead Ions ◽  
Ammonium Bromide ◽  
Porous Hydroxyapatite ◽  
X Ray ◽  
Composition And Structure ◽  
Cetyl Trimethyl Ammonium ◽  
Co Precipitation

In the present study, a new low-cost bioceramic nanocomposite based on porous hydroxyapatite (HAp) and cetyl trimethyl ammonium bromide (CTAB) as surfactant was successfully obtained by a simple chemical co-precipitation. The composition and structure of the HAp-CTAB were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), scanning electron microscope (SEM) equipped with an energy dispersive X-ray (EDX) spectrometer, and N2 adsorption/desorption analysis. The capacity of HAp-CTAB nanocomposites to remove the lead ions from aqueous solutions was studied by adsorption batch experiments and proved by Langmuir and Freundlich models. The Pb2+ removal efficiency of HAp-CTAB biocomposite was also confirmed by non-destructive ultrasound studies. The cytotoxicity assays showed that the HAp-CTAB nanocomposites did not induce any significant morphological changes of HeLa cells after 24 h of incubation or other toxic effects. Taken together, our results suggests that the obtained porous HAp-CTAB powder could be used for the decontamination of water polluted with heavy metals, such as Pb2+.

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