scholarly journals Study of Adsorption Phenomena by Using Almond Husk for Removal of Aqueous Dyes

2017 ◽  
Vol 12 (1) ◽  
pp. 80-88 ◽  
Author(s):  
M Bhanuprakash ◽  
S. L Belagali
Keyword(s):  
Crystal Violet ◽  
Aqueous Media ◽  
Bromocresol Green ◽  
Human Beings ◽  
Total Removal ◽  
Green Adsorbent ◽  
Percentage Removal ◽  
Almond Husk ◽  
Adsorption Phenomena ◽  
Domestic Purpose

Among air and soil, water pollution is considered as an important one. Deterioration of water resources by the addition of various pollutants leads to the major threat to water quality and use of water for domestic purpose which leads to unaesthetic. For the plants, animals and human beings dyes are considered as most hazardous among various water pollutants. The present paper describes the adsorption behaviour of adsorbent almond husk with respect to dyes of Crystal violet, Bromocresol green, Pararosaniline and Victoria blue was investigated. The batch method was used and parameters like pH, adsorbent dosage, contact time and initial and final concentration of dyes were studied. Adsorbent used to be effective, with total removal of all dyes of 90%, with higher percentage removal from bromocresol green 97.5%, Crystal violet 96.9%, Pararosaniline 95.6% and Victoria blue 95%. Almond husk was an effective adsorbent with maximum percentage removal of 97.5% bromocresol green. Adsorbent was analysed by the instrument of scanning electron microscopy and Fourier infrared spectroscopy. In the present study almond husk almond husk was studied as a very good adsorbent for the removal of dyes from the aqueous media. Isotherm model of Langmuir, Freundlich and Dubinin-Radushkevich were considered to be favourable.

Cationic Surfactant-modified Clay as an Adsorbent for the Removal of Synthetic Dyes from Aqueous Solutions

2018 ◽  
Vol 16 (5) ◽  
Author(s):  
Hamed Biglari ◽  
Susana RodríguezíCouto ◽  
Yusef Omidi Khaniabadi ◽  
Heshmatollah Nourmoradi ◽  
Mohammad Khoshgoftar ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Loading Rate ◽  
Aqueous Media ◽  
Bromocresol Green ◽  
Ammonium Bromide ◽  
Synthetic Dyes ◽  
Order Kinetic ◽  
Alizarin Red ◽  
Adsorbent Dosage ◽  
Isotherm Equation

AbstractIn this study, the potential of hexadecyl trimethyl ammonium bromide modified montmorillonite (HDTMA-Mt) to remove the synthetic dyes Alizarin Red S (ARS) and Bromocresol Green (BCG) from aqueous media was assessed. The effect of different factors including surfactant loading rate onto the clay, contact time, pH, adsorbent dosage and dye concentrations, on the removal of ARS and BCG in batch systems were investigated. The adsorbent was characterized by means of scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometry (XRD). The equilibrium time for ARS and BCG was reached at 40 and 20 min, respectively, under optimized conditions (i.e. pH = 3, adsorbent dosage=1 g/L, surfactant loading rate onto the clay 70% of the cation exchange capacity (CEC) for ARS and 120% of the CEC for BCG, ARS concentration 50 mg/L and BCG concentration 500 mg/L). The adsorption rate of both dyes fitted the pseudo-second-order kinetic model and the equilibrium data was described by the Freundlich isotherm equation. The maximum monolayer adsorption capacities were equal to 666.6 and 1250 mg/g for ARS and BCG, respectively. Therefore, the HDTMA-Mt can be considered as an effective adsorbent for the removal of ARS and BCG from aqueous solutions.

scholarly journals Adsorptive Studies for the Removal of Crystal Violet Dye from Aqueous Solution by Using Cicca Acida L. Stem - Activated Carbon

2021 ◽  
Vol 16 (2) ◽  
pp. 436-443
Author(s):  
Sharmila Ramasamy ◽  
Anbarasu Kaliyaperumal ◽  
Thamilarasu Pommanaickar
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Kinetic Model ◽  
Crystal Violet ◽  
Order Kinetic ◽  
Human Beings ◽  
Crystal Violet Dye ◽  
Before And After ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Textile industries discharge wastewater containing various dyes including Crystal Violet dye. These dyes are very harmful for human beings, animals and plants. Therefore, the attempt is made for adsorption framework on elimination of crystal violet dye by using Cicca acida L. stem-activated carbon from aqueous solution carried out under various experimental methods and optimization conditions. Adsorption data modeled with Freundlich, Langmuir and Tempkin adsorption isotherms. Thermodynamic factors like as ∆Ho, ∆So and ∆Go were calculated, which indicated that the adsorption was spontaneous and endothermic nature. Based on kinetic study, pseudo-second order kinetic model was fit compared to the pseudo-first order kinetic model. The adsorbent has been characterized by SEM before and after adsorption of crystal violet dye solution.

High performance adsorption of hazardous triphenylmethane dye-crystal violet onto calcinated waste mussel shells

2019 ◽  
Vol 54 (3) ◽  
pp. 249-256 ◽  
Author(s):  
Sahra Dandil ◽  
Deniz Akin Sahbaz ◽  
Caglayan Acikgoz
Keyword(s):  
Aqueous Solutions ◽  
Crystal Violet ◽  
Contact Time ◽  
Dye Adsorption ◽  
Isotherm Models ◽  
Synthetic Dyes ◽  
Human Beings ◽  
Triphenylmethane Dye ◽  
Adsorbent Dosage ◽  
Kinetics And Isotherms

Abstract Synthetic dyes are harmful to human beings, and the removal of colour from process or waste effluents is environmentally important. Crystal violet (CV) is a typical triphenylmethane dye, which is widely used in textile dyeing and paper printing industries. The present study shows that granulated and calcinated waste mussell shells (CWMS) can be used as a potential low-cost and locally available adsorbent for the removal of CV from aqueous solutions. The adsorption capacities of the CWMS for CV were investigated with respect to the effect of pH value, adsorbent dosage, contact time, initial dye concentration and temperature. Process variables were optimized, and a maximum dye adsorption of 482.0 mg/g was achieved at pH 6, 0.2 g/L adsorbent dosage, 220 min contact time and 25 °C for dye initial concentration of 100 mg/L. Adsorption kinetics and isotherms were followed by the pseudo-second order model and Freundlich isotherm models, respectively. Thermodynamic parameters demonstrated that adsorption of CV was spontaneous and endothermic in nature. The results indicated that the CWMS as a new adsorbent had the potential to serve in wastewater treatment applications, especially in the removal of CV from aqueous solutions.

A green adsorbent for the removal of BTEX from aqueous media

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14290-14305 ◽  
Author(s):  
M. Arshadi ◽  
H. Shakeri ◽  
J. W. L. Salvacion
Keyword(s):  
Citric Acid ◽  
Adsorption Mechanism ◽  
Aqueous Media ◽  
Green Adsorbent ◽  
Benzene Toluene

Ostrich bone waste (OBW) was modified chemically with citric acid and used as a bioadsorbent. The uptake of benzene, toluene, ethylbenzene, andp-xylene (BTEX) and the adsorption mechanism of BTEX by the green adsorbent (OBW-NaOH–CA) were studied.

scholarly journals Efficient Removal of Dyes Using Almond Husk as a Natural Adsorbent

2016 ◽  
Vol 5 (2) ◽  
pp. 57
Author(s):  
Bhanuprakash M. ◽  
Belagali S.L.
Keyword(s):  
Contact Time ◽  
Water Systems ◽  
Langmuir Model ◽  
Human Beings ◽  
Efficient Removal ◽  
Batch Mode ◽  
Major Threat ◽  
Almond Husk ◽  
Soil And Water ◽  
Adsorbent Dose

<div><p><em>Industrialization and urbanization is considered as, one of major threat to pollution of air, soil and water systems. Among these, water pollution is considered as important one. The addition of various pollutants to water resources is considered as major threat for deterioration of water quality and makes it unsuitable for domestic purposes. Out of many water pollutants, dyes are considered as most hazardous for the plants, animals and human beings. So, it is very important to conserve water due to limited availability. In the present study, almond husk was neutraceutical spent used as adsorbent for the removal of dyes from aqueous solutions in batch mode experiments. Parameters like contact time, pH, adsorbent concentration, adsorbent dose were studied. The results show that, almond husk is a very good adsorbent for the removal of dyes from the aqueous medium. The adsorption isotherms like Freudlich and Langmuir model were calculated and found to be favorable.  </em></p></div>

ADSORPTION OF CRYSTAL VIOLET DYE FROM AQUEOUS MEDIA BY ALGERIAN CLAY: STUDIES ON EQUILIBRIUM ISOTHERM, KINETIC AND THERMODYNAMIC OF INTERACTION

2021 ◽  
Vol 77 (9) ◽  
Author(s):  
Rania Remmani ◽  
Dámaris Núñez-Gómez ◽  
Rachid Makhloufi ◽  
Malek Miladi ◽  
Naim Sezgin ◽  
...  
Keyword(s):  
Crystal Violet ◽  
Aqueous Media ◽  
Equilibrium Isotherm ◽  
Crystal Violet Dye

Removal of Mercury (II) and Lead (II) from Aqueous Media by Using a Green Adsorbent: Kinetics, Thermodynamic, and Mechanism Studies

2018 ◽  
Vol 22 (2) ◽  
pp. 04017026 ◽  
Author(s):  
Mohammad Javad Amiri ◽  
Mohammad Arshadi ◽  
Evangelos Giannakopoulos ◽  
Ioannis K. Kalavrouziotis
Keyword(s):  
Aqueous Media ◽  
Green Adsorbent

Electrokinetic study of the adsorption of ethyl violet and crystal violet by montmorillonite clay particles

1997 ◽  
Vol 75 (12) ◽  
pp. 1868-1877 ◽  
Author(s):  
Laurier L. Schramm ◽  
Shmuel Yariv ◽  
Dipak K. Ghosh ◽  
Loren G. Hepler
Keyword(s):  
Crystal Violet ◽  
Dye Adsorption ◽  
Montmorillonite Clay ◽  
Degree Of Saturation ◽  
Adsorption Parameters ◽  
Clay Particles ◽  
Electrophoretic Mobilities ◽  
Ethyl Violet ◽  
Different Types ◽  
Adsorption Phenomena

Electrophoretic mobilities of mixtures of a montmorillonite clay (in different exchangeable metal cation forms) and increasing amounts of two cationic dyes (ethyl violet and crystal violet) were measured. Electrophoretic mobilities were found to vary between −60 × 10−5 and +40 × 10−5 cm2 s−1 V−1. For both the dyes, the degree of saturation at which the isoelectric point (IEP) occurs, decreases with increasing valency of the metal cations. An effort was made to connect the IEP, maximum flocculation, and dye adsorption parameters. An important adsorption parameter is the transition saturation (TS), the saturation beyond which adsorption by organophilic attractions occurs in addition to adsorption by electrical and (or) π-interactions. It was found that maximum flocculation occurs before the IEP for all the exchangeable cations tested, but the IEP is reached at similar saturations to the TS for most of the cations. These results have been interpreted in terms of different types of adsorption phenomena and particle associations. Keywords: clay, adsorption, dye, ion exchange, electrokinetic charge.

Alginate-whey an effective and green adsorbent for crystal violet removal: Kinetic, thermodynamic and mechanism studies

2019 ◽  
Vol 139 ◽  
pp. 944-954 ◽  
Author(s):  
Amal Djelad ◽  
Adel Mokhtar ◽  
Amine Khelifa ◽  
Abdelkader Bengueddach ◽  
Mohamed Sassi
Keyword(s):  
Crystal Violet ◽  
Green Adsorbent
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