scholarly journals Separation of acid blue 25 from aqueous solution using water lettuce and agro-wastes by batch adsorption studies

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Muhammad Raziq Rahimi Kooh ◽  
Muhammad Khairud Dahri ◽  
Linda B. L. Lim ◽  
Lee Hoon Lim ◽  
Chin Mei Chan
Keyword(s):  
Aqueous Solution ◽  
Batch Adsorption ◽  
Water Lettuce ◽  
Adsorption Studies ◽  
Acid Blue 25 ◽  
Acid Blue

Batch Adsorption Studies on the Removal of Acid Blue 25 from Aqueous Solution Using Azolla pinnata and Soya Bean Waste

2015 ◽  
Vol 41 (7) ◽  
pp. 2453-2464 ◽  
Author(s):  
Muhammad Raziq Rahimi Kooh ◽  
Muhammad Khairud Dahri ◽  
Linda B. L. Lim ◽  
Lee Hoon Lim
Keyword(s):  
Aqueous Solution ◽  
Soya Bean ◽  
Batch Adsorption ◽  
Azolla Pinnata ◽  
Adsorption Studies ◽  
Acid Blue 25 ◽  
Acid Blue

scholarly journals Acid Blue 25 Removal by using Electro-Persulfate Process

2020 ◽  
Author(s):  
Zeinab Ghorbani
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Salt Concentration ◽  
Dye Removal ◽  
Industrial Effluents ◽  
Sodium Persulfate ◽  
Initial Concentration ◽  
Acid Blue 25 ◽  
Sulfate Process ◽  
Acid Blue

This study aimed to investigate the efficiency of the electro-persulfate process in removing acid blue 25 from aqueous solution. In order to optimize the parameters, the OFAT method was used, and the effect of three main parameters, including pH, sodium persulfate salt concentration, and current intensity was investigated. According to the results, the optimal removal efficiency of 94% in 60 minutes was obtained under conditions of pH=5, the initial concentration of sodium persulfate=250 mg / L, and the current=500 mA. According to the results of this study, the electro-persulfate process sulfate process can be an efficient process for dye removal from industrial effluents.

Spectrophotometric investigation of the interactions between cationic (C.I. Basic Blue 9) and anionic (C.I. Acid Blue 25) dyes in adsorption onto extracted cellulose from Posidonia oceanic in single and binary system

2016 ◽  
Vol 73 (9) ◽  
pp. 2211-2221 ◽  
Author(s):  
Najoua Ben Douissa ◽  
Sonia Dridi-Dhaouadi ◽  
Mohamed Farouk Mhenni
Keyword(s):  
Aqueous Solution ◽  
Molecular Complex ◽  
Photoelectron Spectroscopy ◽  
Electrostatic Interactions ◽  
Equilibrium Concentration ◽  
Species Interaction ◽  
Spectrophotometric Analysis ◽  
Textile Dye ◽  
Acid Blue 25 ◽  
Acid Blue

Extracted cellulose from Posidonia oceanica was used as an adsorbent for removal of a cationic (Basic blue 9, BB) and anionic textile dye (Acid blue 25, AB) from aqueous solution in single dye system. Characterization of the extracted cellulose and extracted cellulose-dye systems were performed using several techniques such as Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, zeta potential and Boehm acid–base titration method. Adsorption tests showed that the extracted cellulose presented higher adsorption of BB than AB in single dye system, revealing that electrostatic interactions are responsible, in the first instance, for the dye–adsorbent interaction. In single dye systems, the extracted cellulose presented the maximum adsorption capacities of BB and AB at 0.955 mmol.g−1 and 0.370 mmol.g−1, respectively. Adsorption experiments of AB dye on extracted cellulose saturated by BB dye exhibited the release of the latter dye from the sorbent which lead to dye–dye interaction in aqueous solution due to electrostatic attraction between both species. Interaction of BB and AB dyes were investigated using spectrophotometric analysis and results demonstrated the formation of a molecular complex detected at wavelengths 510 and 705 nm when anionic (AB) and cationic (BB) dye were taken in equimolar proportions. The adsorption isotherm of AB, taking into account the dye–dye interaction was investigated and showed that BB dye was released proportionately by AB equilibrium concentration. It was also observed that AB adsorption is widely enhanced when the formation of the molecular complex is disadvantaged.

scholarly journals Performance Comparison of Fe2+ Activated Persulfate and Electro-Persulfate Process in Acid Blue 25 Removal from Aqueous Solution Operating: Conditions and Reaction Velocity

2020 ◽  
Author(s):  
Zeinab Ghorbani
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Ferrous Sulfate ◽  
Electrochemical Process ◽  
Sodium Persulfate ◽  
Sulfate Concentration ◽  
Reaction Velocity ◽  
Acid Blue 25 ◽  
Acid Blue ◽  
Activated Persulfate

The purpose of this study was to compare the performance of Fe2+ activated persulfate and electro-persulfate process in Acid Blue 25 removal from aqueous solution. For this reason, the effects of different parameters including pH, dye, sodium persulfate and ferrous sulfate concentrations were investigated. The removal efficiency of 92% at the time of 60 min was obtained at pH= 3, dye concentration= 50 mg/L, sodium persulfate concentration= 500 mg/L and Fe (II) sulfate concentration= 100 mg/L for Fe2+ activated persulfate system and the removal efficiency of 95% at pH= 5, dye concentration = 200 mg/L, sodium persulfate concentration = 500 mg/L and ferrous sulfate concentration = 100 mg/L for electro-persulfate system by means of graphite materials as the neutral electrodes. COD removal efficiency in Fe2+ activated persulfate and electro-persulfate in the mentioned conditions were 90% and 89% in 180 minutes, respectively. Moreover, the result of process kinetics showed that using electrochemical process improved the reaction velocity from 0.0016 to 0.0487 mg/L/min. The comparison between these two-process showed that using electrochemical process improved dye removal efficiency by 4 times.

Adsorption of acid Blue 25 dye by CPAA coated on SBA-15 in aqueous solution: A density functional theory study

2020 ◽  
Vol 269 ◽  
pp. 116568
Author(s):  
Merat Ghanei ◽  
Abosaeed Rashidi ◽  
Habib-Allah Tayebi ◽  
Mohammad Esmail Yazdanshenas ◽  
Hamid Rezainejad
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Acid Blue 25 ◽  
Acid Blue

scholarly journals Equilibrium, kinetics and thermodynamic adsorption studies of acid dyes on adsorbent developed from kenaf core fiber

2017 ◽  
Vol 36 (1-2) ◽  
pp. 694-712 ◽  
Author(s):  
Intidhar J Idan ◽  
Luqman C Abdullah ◽  
Thomas SY Choong ◽  
Siti Nurul Ain B Md Jamil
Keyword(s):  
Maximum Adsorption Capacity ◽  
Trimethylammonium Chloride ◽  
Order Kinetic ◽  
Adsorption Studies ◽  
Kenaf Core ◽  
Core Fiber ◽  
Percentage Removal ◽  
Acid Blue 25 ◽  
Acid Blue ◽  
Acid Green 25

Quaternized kenaf core fiber (QKCF) was used as an adsorbent for adsorption of anionic Acid Blue-25 (AB) and anionic Acid Green-25 (AG) dyes. Chemical treatment with (3-chloro-2-hydroxypropyl) trimethylammonium chloride under basic condition was applied in order to alter the surface properties of the raw kenaf core fiber. Adsorption studies were carried out to delineate the effect of initial dye concentration, temperature and pH on removal of dyes. The results show that the percentage removal of Acid Blue-25 and Acid Green-25 dyes were increased by increasing the concentrations of dyes. In addition, the maximum percentage removal was 99.8% and 99.65% for Acid Blue-25 and Acid Green-25, respectively. Langmuir, Freundlich and Temkin isotherm models were applied to analyze the data for dye adsorption at 15℃, 25℃, 35℃, and 45℃. The experimental data were best represented by the Langmuir model with maximum adsorption capacity of 303.03 mg/g and 344.83 mg/g for Acid Blue-25 and Acid Green-25 dyes, respectively, at 15℃, and the kinetic data for both dyes were best represented by the pseudo-second-order kinetic model. Thermodynamic studies indicated that the reactions of Acid Blue-25 and Acid Green-25 dyes were endothermic. It was concluded that QKCF adsorbent can be utilized as an efficient low-cost adsorbent for removal of anionic dyes.

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