Malachite green removal from aqueous solutions using fibrous cellulose sulfate prepared from medical cotton waste: Comprehensive batch and column studies

Baghdadi, Majid; Soltani, Behzad; Nourani, Mohammad Reza

doi:10.1016/j.jiec.2017.06.037

Cited by 52 publications

(16 citation statements)

References 49 publications

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“…On the other hand, Tang and Zaini [15] reported a longer contact time to reach equilibrium at 60 h and 70 h for congo red concentrations of 150 and 400 mg/dm 3 , respectively. A longer contact time for an increase in dyes concentration has been reported in a number of studies [6,9,10,21,23,24,39,40,44]. For example, the equilibrium time increases from 20 min to 10 h with increasing congo red concentration from 50 to 300 mg/dm 3 by Ag-doped hydroxyapatite adsorption [39].…”

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 76%

“…By using the same dosage of 0.5 g/dm 3 , the reduced graphene oxide takes about 10 h to achieve equilibrium at capacity of 412 mg/g for dye concentration of 200 mg/dm 3 [9]. Meanwhile, fibrous cellulose sulphate [21] exhibits a more rapid equilibrium of 20 min at 930 mg/g using a smaller dosage of 0.2 g/dm 3 and dye concentration of 200 mg/dm 3 . Similarly, Fe 3 O 4 @nSiO 2 @mSiO 2 core-shell microspheres [44] demonstrates a superior adsorption of 1429 mg/g at a rapid pace of 100 min for congo red concentration of 600 mg/dm 3 and 0.33 g/dm 3 dosage.…”

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

“…Notwithstanding that, the vacant active sites progressively decreases with time thus decreasing the rate of adsorption. The rate constant generally decreases with increasing concentration because of the intensified collision of dye molecules [6,9,15,18,21,24,25,39,40,44]. On the other hand, a greater rate constant with increasing concentration is attributed to a stronger driving force to overcome mass transfer resistance.…”

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

“…In certain cases, the increase of solution temperature results in the decrease of dyes removal, rendering an exothermic-type of adsorption. This commonly happens as a result of rapid movement of molecules as temperature increases due to the relatively weak affinity of temperature-sensitive functional groups in the adsorbents [8,19,21,37,44].…”

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

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Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Swan

Zaini

2019

Ecological Chemistry and Engineering S

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Global concern on dyes-laden effluent has intensified over the years. Dyes are toxic, stable to light, and hardly oxidized and bio-degraded, hence causing severe physiological effects to living organisms. In water, dye hinders the light penetration for photosynthetic activity, consequently oxygen is deficient for respiration by aquatic creatures. Adsorption has been widely recognized as the effective removal strategy to abate dye wastewater. However, the quests to improve the adsorption efficiency are continuously sought through new adsorbents with special characters, while performing the removal process at optimum operating conditions. This short review aims to summarize the recent progress in adsorption studies of two commonly used industrial dyes, namely malachite green and congo red by various adsorbents. From the quoted studies, the oxidized mesoporous carbon yields a higher adsorption capacity of malachite green at 1265 mg/g, while Fe3O4@nSiO2@mSiO2 displays a greater capacity for congo red removal at 1429 mg/g. A superior adsorption relies not only on specific surface area but also the synergistic interactions of pore width and mesoporosity, surface chemistry, and operating conditions. The dyes properties and factors affecting the adsorption are also highlighted and discussed, with recommendations and future outlook.

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Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 76%

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

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Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Swan

Zaini

2019

Ecological Chemistry and Engineering S

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“…13 The usage of waste as an adsorbent helps to reduce environmental pollution by recycling. In the literature some of the low-cost adsorbents used for dye removal were NaOH treated saw dust, 14 waste rubber tire, 15 white rice husk ash, 16 Neem leaf powder, 17 kaolin, 2 peach stone, 18 and medical cotton waste 19 etc.…”

Section: Introductionmentioning

confidence: 99%

Sandpaper Wastes as Adsorbent for the Removal of Brilliant Green and Malachite Green Dye

Coşkun

Aksuner

Yanık

2019

ACSi

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Sandpaper wastes were used as adsorbent after pyrolysis at 500 °C and calcination at 800 °C for the removal of brilliant green and malachite green cationic dye from an aqueous solution. The effects of the pH, the adsorbent dose, the contact time, and the initial dye concentration on the removal efficiencies were investigated. The isotherm studies were conducted by using the Langmuir, Freundlich, and Dubinin-Radushkevich models, and thermodynamic studies were also performed. The adsorption of the Brilliant green and malachite green were found to comply with the Langmuir isotherm model and the Freundlich isotherm model, respectively. The thermodynamic studies showed that the adsorption of dyes were endothermic. The E values obtained from the Dubinin-Radushkevich isotherm showed that the adsorption mechanism was chemical in nature. Furthermore, the three kinetic models (pseudo first-order, pseudo second-order, and intraparticle diffusion) were investigated. It was found that the pseudo second-order kinetic model fitted well for adsorption of dyes.

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Preparation and characterization of cellulose sulfate/Pd nanocatalsysts with remarkable efficiency for Suzuki–Miyaura reaction

Jokar

Naeimi

Bidhendi

2021

Applied Organom Chemis

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Heterogeneous catalysis with noble metal NPs are quite attractive due to unique surface chemistry and tuneable physicochemical properties. In this work, an efficient and simple method was used to synthesize palladium nanoparticles supported on cellulose sulfate. The resulted composites were characterized using various techniques such as X‐ray powder diffraction (XRD), FT‐IR, energy dispersive X‐ray spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA) to verify the chemical structure and morphological properties of nanocatalysts. Next, the synthesized catalyst was utilized in Suzuki–Miyaura reaction between aryl bronic acid and different aryl halides. The catalysis reaction was carried out under atmospheric pressure where high efficiency, unique and simple work‐up procedure as well as excellent yields were achieved.

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Malachite green removal from aqueous solutions using fibrous cellulose sulfate prepared from medical cotton waste: Comprehensive batch and column studies

Cited by 52 publications

References 49 publications

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Sandpaper Wastes as Adsorbent for the Removal of Brilliant Green and Malachite Green Dye

Preparation and characterization of cellulose sulfate/Pd nanocatalsysts with remarkable efficiency for Suzuki–Miyaura reaction

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