Adsorption and desorption of carbaryl on hexadecyl trimethyl ammonium bromide modified zeolite NaY using RGB portable photometer

2018 ◽  
Author(s):  
Nopbhasinthu Patdhanagul ◽  
Saiphon Chanpaka ◽  
Orapan Intharaksa ◽  
Rujikarn Sirival ◽  
Kannikar Thanomsith ◽  
...  
Keyword(s):  
Ammonium Bromide ◽  
Adsorption And Desorption ◽  
Modified Zeolite ◽  
Zeolite Nay ◽  
Hexadecyl Trimethyl Ammonium Bromide

scholarly journals Antibacterial activity of CTAB-modified zeolite NaY with different CTAB loading

2014 ◽  
Vol 10 (3) ◽  
Author(s):  
Mashitah Mad Salim ◽  
Nik Ahmad Nizam Nik Malek ◽  
Nur Isti’anah Ramli ◽  
Siti Aishah Mohd Hanim ◽  
Salehhuddin Hamdan
Keyword(s):  
Antibacterial Activity ◽  
Exchange Capacity ◽  
Ammonium Bromide ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Modified Zeolite ◽  
Zeolite Nay ◽  
E Coli ◽  
Inhibition Zones ◽  
Cetyltrimethyl Ammonium ◽  
And Staphylococcus Aureus

The antibacterial activity of cetyltrimethyl ammonium bromide (CTAB) –Modified Zeolite NaY against Escherichia coli and Staphylococcus aureus was examined in agar disk diffusion (Kirby-Bauer) method. The diameter of the inhibition zones for E. coli and S. aureus, increased from 1.5 to 1.7 cm and 1.9 to 2.0 cm, respectively, with the increasing concentrations of CTAB adsorbed on Zeolite NaY from percent coverage of the External Cation Exchange Capacity of Zeolite NaY: 0.5 to 5.0. CTAB-Modified Zeolite NaY showed effective antimicrobial activity against S. aureus compared to E. coli.________________________________________GRAPHICAL ABSTRACT

scholarly journals Adsorption of reactive yellow BF-3R dye by CTABr modified zeolite NaY

2021 ◽  
Vol 10 (14) ◽  
pp. e323101422147
Author(s):  
Thiago Rodrigo Barbosa Barros ◽  
Thianne Silva Batista Barbosa ◽  
Meiry Gláucia Freire Rodrigues
Keyword(s):  
Cetyltrimethylammonium Bromide ◽  
Three Dimensional ◽  
Water System ◽  
Dimensional Structure ◽  
Physical Treatment ◽  
Organic Salts ◽  
Modified Zeolite ◽  
Zeolite Nay ◽  
Treatment Processes ◽  
Organic Surfactant

Textile industries generate effluents composed of organic salts and complexes from dyes not fixed on fabrics, or not degraded by the inefficiency of conventional treatment processes, which represents a high potential for environmental impact due to inadequate disposal of the generated effluent. Zeolites are porous materials that have a three-dimensional structure containing tetrahedrals of AlO4 e SiO4 which can be modified to improve its properties. The adsorption process using zeolites as adsorbents can be considered an excellent economic physical treatment to solve or minimize such a problem. This work presents an experimental study focusing on the preparation and characterization of zeolite NaY and modified with organic surfactant cetyltrimethylammonium bromide (CTABr) intended to be used as adsorbent in the process of removing yellow dye BF-3R in dye-water system batch system. The samples were characterized by X-ray diffraction (XRD), Infrared spectroscopy (IR) and thermogravimetry (TG). The effect of process parameter such as pH was studied. Results revealed that even though the modified cetyltrimethylammonium bromide organic surfactant (CTABr) did not cause alterations on the zeolite NaY structure. The IR results revealed that CTABr was successfully incorporated to zeolite NaY structure. The best conditions were established with respect to pH to saturate the available sites located on the zeolite NaY and NaY_CTABr surface. The maximum adsorption capacities were 3.35 and mg/g for dye 5.35 using as-synthesized zeolite NaY and CTABr modified zeolite NaY. Modified zeolites are excellent adsorbents for removing reactive dyes from industrial wastewater.

scholarly journals Ion-Selective Electrode for Anionic Surfactants Using Hexadecyl Trimethyl Ammonium Bromide-Sodium Dodecylsulfate as an Active Ionophore

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Junwei Wang ◽  
Zhiping Du ◽  
Wanxu Wang ◽  
Wei Xue
Keyword(s):  
Limit Of Detection ◽  
Sodium Dodecylsulfate ◽  
Poor Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Ammonium Bromide ◽  
Hexadecyl Trimethyl Ammonium Bromide ◽  
Pvc Membrane Electrode ◽  
Wide Ph Range

The construction and characteristic performance of PVC membrane electrode responsive to sodium dodecylsulfate (SDS) are described in this paper. The electrode is based on hexadecyl trimethyl ammonium bromide-Sodium dodecylsulfate (CTA+DS−) ion pair as ionophore in PVC membrane, which displays a Nernstian slope of −58 ± 0.9 mV/decade in a 5.0 × 10−6to 2.5 × 10−3 mol L−1concentration range and a limit of detection of 2.9 × 10−6 mol L−1. The electrode can be used for 3 months without showing significant changes in the value of slope or working range. Also the electrode has wide pH range of application and short response time. The electrode shows a selective response to SDS and a poor response to common inorganic anions. The selective sequence found was SDS > HCO3 −> CH3COO−> Cl−> I−> NO3 −≈Br−> F−> CO3 2−> C6H5O7 3−> C2O4 2−> SO4 2−> C4H4O6 2−> SO3 2−> PO4 3−. The potentiometric selectivity coefficients determined are indicating that common anions would not interfere in the SDS determination. The electrode has been utilized as an end point indicator electrode for potentiometric titration involving hyamine as titrant.

Removal of triclosan by CTAB-modified zeolite-rich tuff from aqueous solutions

MRS Advances ◽  
2020 ◽  
Vol 5 (62) ◽  
pp. 3257-3264
Author(s):  
Sonia Alvarez-García ◽  
Guadalupe Macedo-Miranda ◽  
Sonia Martínez-Gallegos ◽  
Eduardo Ordoñez-Regíl ◽  
Jessica López-Castillo ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Zero Point ◽  
Process Efficiency ◽  
Ammonium Bromide ◽  
Maximum Adsorption Capacity ◽  
Modified Zeolite ◽  
Anionic Species ◽  
Type Zeolite ◽  
Cetyl Trimethyl Ammonium ◽  
Natural Clinoptilolite

AbstractTriclosan (TCS) adsorption behavior by a modified zeolite with Cetyl Trimethyl Ammonium Bromide (CTAB) was evaluated factoring in pH, contact time, and TCS initial concentration in a batch system. Natural clinoptilolite-type zeolite from Sonora, Mexico was conditioned with a sodium chloride solution, and, subsequently, modified with CTAB. All the zeolites were characterized by X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Electron Dispersive Spectroscopy (EDS), and the Zero Point Charge (pHZPC). It was found that the morphological and structural properties of natural zeolite were not affected after treatment with cationic surfactant. Furthermore, adsorption process efficiency was enhanced by the presence of CTAB, obtaining TCS maximum adsorption capacity at an optimal pH of 9.0. In this context, the positively charged surface of the modified zeolite and the anionic triclosan species present were decisive. Kinetics data were well adjusted to a pseudo-second order model with a TCS adsorption capacity of 1.430 ± 0.051 mg g-1 at an equilibrium time of 18 h. Isotherm results were best adjusted to the Langmuir model with a qmax = 2.027 mg g-1 using an initial Co concentration of 18.0 mg L-1, and reaching an equilibrium Ce concentration of 0.559 mg L-1. The mechanism for the adsorption of TCS by CTAB-modified zeolite was proposed to be electrostatic attractions between the group of partial positive charge of CTAB and the anionic species of triclosan. Consequently, CTAB-modified zeolites could be used as effective adsorbents for triclosan removal.

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