Phase change material for efficient removal of crystal violet dye

Haik, Yousef; Qadri, Shahnaz; Ganoe, Ashley; Ashraf, Sarmadia; Sawafta, Reyad

doi:10.1016/j.jhazmat.2009.11.109

Cited by 15 publications

(6 citation statements)

References 15 publications

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“…As a starting point, Crystal Violet (CV) is a water-soluble cationic dye belonging to the class of triarylmethane dyes; they are widely used in textile industries for dyeing cotton, acrylic, nylon, wool, leather, paper, plastics and silk (Mittal et al, 2010). Further, it's a carcinogenic that has been classified among the recalcitrant molecules since it is poorly metabolized by microbial flora; it is not only biodegradable but it might persist in environmental medium as well (Haik et al, 2010;Mohamad Amran et al, 2011). Hence, worldwide environmental scientists have faced this threat by developing cost effective and efficient technologies for CV treatment (Mittal et al, 2010;Mohamad Amran et al, 2011;Sivashankar et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Assessment of adsorption kinetics for removal potential of Crystal Violet dye from aqueous solutions using Moroccan pyrophyllite

Miyah

Lahrichi

Idrissi

et al. 2017

Journal of the Association of Arab Universities for Basic and A

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This study involves the adsorption of Crystal Violet (CV) dye adsorbed from solution on the pyrophyllite's surface. The batch technique was used under a variety of conditions to produce quantitative adsorption, namely amount of adsorbent, dye concentration, contact time, pH solution and temperature. The maximum adsorption capacity of Crystal Violet on pyrophyllite was 9.58 mg/g for 10 mg/L of CV concentration, pH = 6.8 at a temperature 20°C and 1 g/L of adsorbent. This study of adsorption kinetics was carried out within framework of three models: intraparticle diffusion, pseudo-first order and pseudo-second order. The experimental isotherm data were analyzed using Langmuir and Freundlich models. Different thermodynamic parameters have shown spontaneous reaction with endothermic nature (The estimated value for DG was À7.64 kJ/mol at 293 K). Various techniques for characterizing the adsorbent were applied including X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) coupled by energy dispersive X-ray spectroscopy (EDX). In addition, the regenerated adsorbents technique was reused several times; this demonstrated an economical aspect of using pyrophyllite which underlines the re-use importance considering the material capacity to regenerate.

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Section: Introductionmentioning

confidence: 99%

Assessment of adsorption kinetics for removal potential of Crystal Violet dye from aqueous solutions using Moroccan pyrophyllite

Miyah

Lahrichi

Idrissi

et al. 2017

Journal of the Association of Arab Universities for Basic and A

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“…Figure shows the FTIR spectra for the prepared membranes. For all membranes the stretching vibration of O‐H was observed at around 3528–3549 cm −1 . It can be observed that the absorption peak around 2933 cm −1 appeared in all spectra and was ascribed to the stretching vibration of −NH‐ groups .…”

Section: Resultsmentioning

confidence: 83%

“…In the electro‐dialysis cell (at pH >11), Crystal violet was no longer protonated. At higher pH values, the oxidation potential of water decreases, leading to undesirable water oxidation at anode . The effect of the solution pH upon the adsorption of Basic green 4 using Ananas comosus leaf powder was studied.…”

Section: Resultsmentioning

confidence: 99%

Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract

Căprărescu

Miron

Purcar

et al. 2018

CLEAN Soil Air Water

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Innovative polymer membranes with and without natural fruit extract (rosehip) are characterized in terms of their ability of treating a solution containing Crystal violet by a three‐compartment laboratory scale electro‐dialysis cell. Electro‐dialysis is performed at different time intervals and using a constant voltage of 15 V. The dye removal percentage (%) and energy consumption are calculated. The highest value of dye removal is obtained for 90 min (>96%) for membranes doped with natural fruit extract. Water uptake is also determined for the prepared membranes. The physical and chemical properties of the final membranes are investigated by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and thermal gravimetric analysis‐differential scanning calorimetry (TGA‐DSC). FTIR spectra indicated no significant modifications of membrane structure due to the small amount of natural fruit extract. The surface morphology shows that the prepared membranes doped with natural fruit extract is more dense and compact. TGA results shows that the prepared membranes are stable up to 330 °C.

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“…As demonstrated in Figure (7), adsorption at various concentrations of dye was rapid at first, but then steadily decreased as adsorption progressed until equilibrium was attained. This is due to the fact that the adsorption sites were initially unoccupied and highly accessible, allowing RR43 molecules to quickly engage with them.…”

Section: Interaction Effect Of Initial Concentration Of Dye and Conta...mentioning

confidence: 93%

“…Nowadays, there are more and more cases of ecosystem alterations and public health problems that can lead to the elimination of living species (plants, animals, humans). Numerous studies have shown that certain dyes are responsible for several diseases [3][4][5] and can cause skin irritation, allergic dermatitis, kidney, central nervous system, liver, and brain dyes functions [6,7] and can also cause cancer and mutations. As a result, not only is efficiency in the removal of organic materials from wastewater vital in the selection of a suitable technique in terms of the environment and economy, but also the required raw materials and costs play a critical role.…”

Section: Introductionmentioning

confidence: 99%

Agricultural By-Products as Green Chemistry in Elimination of Reactive Red 43 From Aqueous Media- Adsorption Properties, Kinetics and Thermodynamics Study

et al. 2022

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The aim of this study is to find an effective green waste (GW) natural material as an adsorbent for the removal of C.I. Reactive Red 43 (RR43) from an aqueous solution using batch experiments. Agricultural-by-products such as Peanut Shell (PS) and Corn Cobs (CC) have been used as (GW). Scanning electron microscopy (SEM) coupled with Energy Dispersive X-ray (EDX) and Fourier transform infrared spectrometer (FTIR) techniques were used to characterize the adsorbent before and after adsorption process. The influence of operating factors such as adsorbent dose, initial concentration of dye, contact time, pH solution and temperature were studied. The equilibrium data was analyzed by Langmuir and Freundlich isotherm models and showed a good fit with the Freundlich isotherm (R2=0.999). Batch kinetic data were analyzed using pseudo-first order and pseudo-second order kinetic models, the adsorption kinetics data were fitted to pseudo-second order kinetic model with a good agreement with the intra-particle diffusion model. The parameters of thermodynamic including enthalpy ΔH°, entropy ΔS° and free energy ΔG° demonstrated that the adsorption process was feasible, spontaneous, and exothermic in nature. The results clarified that a large percentage removal, and the optimized conditions were (7.6±0.2 and 4.3±0.2) solution pH for PS and CC respectively, 20mg/L initial dye concentration, adsorbent dose 0.1 gm/20 ml, and 90 min adsorption time. 80.46% and 86.76% of dyes were removed by PS and CC respectively at experimental optimum conditions. These agricultural by-products are renewable, biodegrade able, inexpensive, and easily accessible with little or no cost. Their application as adsorbents is in line with the current trend of green chemistry and green environmental policies.

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Phase change material for efficient removal of crystal violet dye

Cited by 15 publications

References 15 publications

Assessment of adsorption kinetics for removal potential of Crystal Violet dye from aqueous solutions using Moroccan pyrophyllite

Assessment of adsorption kinetics for removal potential of Crystal Violet dye from aqueous solutions using Moroccan pyrophyllite

Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract

Agricultural By-Products as Green Chemistry in Elimination of Reactive Red 43 From Aqueous Media- Adsorption Properties, Kinetics and Thermodynamics Study

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