Adsorption of Crystal Violet from Wastewater by Modified Bambusa Tulda

Laskar, Nirban; Kumar, Upendra

doi:10.1007/s12205-017-0473-5

Cited by 63 publications

(17 citation statements)

References 24 publications

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“…After that, observing the photolysis process has been controlled by following up the absorbance of the crystal violet dye at 585 using visible spectrophotometer. A series of experiments is repeated using different pH values (3)(4)(5)(6)(7)(8)(9)(10)(11)(12), the pH of the solution adjusting using hydrochloric acid (0.1M) and sodium hydroxide (0.1M) and temperatures (25, 35, 45, and 55°C) to determine the best media and temperature for degradation of dye at optimum values of catalysts. The photodegradation percentage of Crystal Violet dye is calculated using the following equation.…”

Section: Procedures Of Degradationmentioning

confidence: 99%

“…Crystal violet (CV), Figure , is a basic dye, which belongs to triphenylmethane dye group that is extensively applied in many industries such as, textiles industry, petroleum waste industry and papers and plastics industry; it is also employed for biological staining in veterinary medicine. Many studies have been conducted to mineralize the contaminations using various types of methods such as biodegradation (2)(3)(4)(5)(6), corrosion process (7), adsorption (8)(9)(10)(11)(12)(13)(14)(15) and photodegradation (16)(17)(18)(19)(20)(21). One of the most efficient and economical methods is probably photodegradation.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Bimetallic Au–Pt / TiO2 Catalysts as an Efficient Catalyst for the Photodegradation of Crystal Violet Dye

et al. 2021

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Bimetallic Au –Pt catalysts supporting TiO2 were synthesised using two methods; sol immobilization and impregnation methods. The prepared catalyst underwent a thermal treatment process at 400◦ C, while the reduction reaction under the same condition was done and the obtained catalysts were identified with transmission electron microscopy (TEM) and energy-dispersive spectroscopy (EDS). It has been found that the prepared catalysts have a dimension around 2.5 nm and the particles have uniform orders leading to high dispersion of platinum molecules .The prepared catalysts have been examined as efficient photocatalysts to degrade the Crystal violet dye under UV-light. The optimum values of Bimetallic Au –Pt catalysts supporting TiO2 have been found (0.05g of the catalyst prepared in sol immobilization method, 0.07 g of the synthesised in impregnation procedure. The impact of pH on the degradation reaction was tested; it has been found that pH 10 is the best media for the reaction. The effect of temperature has been discussed when various temperatures were used, and the heat of photoreaction Ea was estimated from the Arrhenius relationship, it has been concluded that the reaction is independent of temperature as the activation energy was very small (Ea= 22 kJ/ mole). The thermodynamic functions; entropy, enthalpy and the free energy have been figured out. It has been found that the positive values of enthalpy ∆H# refer to endothermic reaction, moreover, it has been demonstrated that the photoreaction is an endergonic one according to the calculated values of the free energy of activation. It has been noticed that when temperature increases, it promotes the production of free radicals, but it has been noticed that exceeding the temperature more than the used range causes reducing the percentage of degradation of crystal violet, the reason is due to the limitation conditions of adsorption process at higher temperature on the surface of the catalyst.

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Section: Procedures Of Degradationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Bimetallic Au–Pt / TiO2 Catalysts as an Efficient Catalyst for the Photodegradation of Crystal Violet Dye

et al. 2021

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“…e maximum adsorption q max (monolayer coverage) for CV on Khulays natural bentonite equals to 263 mg/g. Freundlich isotherm is an empirical equation used to describe the adsorption process on heterogeneous surfaces and is expressed by the following equation [30]:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Phenomena of Removal of Crystal Violet from Wastewater Using Khulays Natural Bentonite

Al-Shahrani

2020

Journal of Chemistry

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The study investigates the phenomena involved in the crystal violet (CV) removal using the Khulays natural bentonite from the wastewater. The batch technique was utilized for performing the adsorption experiments. The operating systems were used for the investigation of the adsorption behaviour in the study, which included the initial CV concentration, time taken for shaking, the dosage of adsorbent, and the initial solution pH. The Freundlich isotherm framework and the Langmuir data were assessed in the experiment. The study outcome revealed that the equilibrium in the study was reached when shaking takes place for about 40 minutes. Additionally, the data of the sorption revealed that the enhancement of the CV concentration at the start mitigates the percentage of the CV removal as a result of which saturation integration in the Khulays bentonite dye occurs. The initial improvement in the solution pH led to improved CV adsorption. The data achieved at the isotherm adsorption were found adequate with the frameworks of Freundlich isotherm and Langmuir. Along with it, the model of pseudo-second-order kinetics was used to exhibit the adsorption of crystal violet with the Khulays natural bentonite. The Khulays natural bentonite adsorption of CV was demonstrated by the thermodynamic data exhibiting its spontaneous as well as endothermic nature. The study concludes that basic dyes can be effectively removed from the wastewater by the use of Khulays natural bentonite.

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“…CV is used as an external skin disinfectant in animals and humans . Also, CV is widely applied to textiles, such as silk and cotton, for purple dyeing and in printing ink and paints …”

Section: Introductionmentioning

confidence: 99%

“…29,30 Also, CV is widely applied to textiles, such as silk and cotton, for purple dyeing and in printing ink and paints. 31,32 In the treatment of polluted wastewater, adsorption has been widely used as a high-performance method in many studies. 33 Different adsorbents, such as waste foundry sand, activated carbon, clay, carbon nanotubes, silica gel, zeolite, and GO, [34][35][36][37][38][39][40] have been applied to the removal of dyes from solution.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic and kinetic studies of crystal violet dye adsorption with poly(methyl methacrylate)–graphene oxide and poly(methyl methacrylate)–graphene oxide–zinc oxide nanocomposites

Rajabi

Mahanpoor

Moradi

2019

J of Applied Polymer Sci

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We successfully prepared poly(methyl methacrylate) (PMMA)–graphene oxide (GO) and PMMA–GO–zinc oxide (ZnO) nanocomposites and characterized them using different techniques. The adsorption performances of the as‐prepared composites were investigated for crystal violet (CV) dye removal. The contact time as a main factor affecting the adsorption process by adsorbents was studied. Because the adsorption capacity value for CV was found to show no extensive changes after 35 min, 35 min was selected as the best contact time for our system. The adsorption results revealed that the best capacity of CV adsorption onto the PMMA–GO and PMMA–GO–ZnO nanocomposites occurred at pH 12 and 298 K. The respective entropies (−0.208 and −0.168 kJ mol−1 K−1) and enthalpies (−72.86 kJ/mol, and −55.54 kJ/mol) for PMMA–GO and PMMA–GO–ZnO and Gibbs energy revealed that the process of adsorption was exothermic. In addition, the Elovich, pseudo‐first‐order, intraparticle diffusion, and pseudo‐second‐order (four types) models were applied to our kinetic study. Our results indicate that CV adsorption onto PMMA–GO and PMMA–GO–ZnO was good with the pseudo‐second‐order (type 1) and pseudo‐first‐order models because of the low χ2 value and the high correlation coefficient value. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47495.

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Adsorption of Crystal Violet from Wastewater by Modified Bambusa Tulda

Cited by 63 publications

References 24 publications

Synthesis of Bimetallic Au–Pt / TiO2 Catalysts as an Efficient Catalyst for the Photodegradation of Crystal Violet Dye

Synthesis of Bimetallic Au–Pt / TiO2 Catalysts as an Efficient Catalyst for the Photodegradation of Crystal Violet Dye

Phenomena of Removal of Crystal Violet from Wastewater Using Khulays Natural Bentonite

Thermodynamic and kinetic studies of crystal violet dye adsorption with poly(methyl methacrylate)–graphene oxide and poly(methyl methacrylate)–graphene oxide–zinc oxide nanocomposites

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