Adsorption kinetics, isotherm and reusability studies for the removal of cationic dye from aqueous medium using arginine modified activated carbon

Naushad, Mu.; Alqadami, Ayoub Abdullah; ALOthman, Zeid A.; Alsohaimi, Ibrahim Hotan; Algamdi, Mohammad Saad; Aldawsari, Abdullah M.

doi:10.1016/j.molliq.2019.111442

Cited by 386 publications

(112 citation statements)

References 58 publications

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“…The experimental data points of initial CR dye concentration and final CR dye concentration were fitted into the linearized equation model. 52 The Langmuir isotherm presumes that between the gaseous mol-…”

Section: Adsorption Isotherm Modelmentioning

confidence: 99%

“…It suggested that adsorbent had definite active sites on its surface having equal affinity for dye molecule that got held on the specific site contributing to adsorption capacity. 52 The adsorption isotherm parameters have been evaluated as represented in Table 2. The potentially higher maximum adsorption capacity of 75.75 mg/g has been concluded for ultrasonicated batch-microwave adsorbent as tabulated in Table 2.…”

Section: Adsorption Isotherm Modelmentioning

confidence: 99%

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Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Maheshwari

Solanki

Ridoy

et al. 2020

Env Prog and Sustain Energy

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Porous microwave irradiated activated carbon has been developed and its application for time efficient ultrasonic treatment of Congo‐red (CR) dye. The maximum removal efficiency of 97.73% was obtained using developed adsorbent with ultrasound treatment. The optimum parameters for maximum dye removal were obtained that is, contact time of 2 hr, adsorbent dose of 0.2 g, neutral pH, room temperature, and initial CR‐effluent concentration of 10 mg/l. Adsorption isotherms models, kinetics of the process, and thermodynamic analysis have been evaluated to investigate the adsorption performance. The pseudo second order rate kinetics (R2 = 0.99) and Langmuir equilibrium isotherm (R2 = 0.99) were well fitted to the experimental data. It has been found that microwave synthesized method was better technique in terms of energy savings, and ultrasonic treatment approach was efficient technique in terms of operational time. The combination of microwave‐ultrasonic reported to have an adsorptive capacity of 75.75 mg/g with least energy‐cost consuming approach.

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Section: Adsorption Isotherm Modelmentioning

confidence: 99%

Section: Adsorption Isotherm Modelmentioning

confidence: 99%

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Maheshwari

Solanki

Ridoy

et al. 2020

Env Prog and Sustain Energy

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“…RBBR dye acts as a cationic dye at the optimised pH, so an already reported efficient method was used to study regeneration of the adsorbent [51]. The adsorbent was regenerated using 0.1 M HCl and reused for the adsorptive removal of RBBR from aqueous solution.…”

Section: Regeneration Of the Adsorbentmentioning

confidence: 99%

Adsorptive removal of Remazol Brilliant Blue R dye from its aqueous solution by activated charcoal of Thuja orientalis leaves: an eco-friendly approach

et al. 2020

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Anthraquinone dyes are one of the major water pollutants due to their stability and persistence in the aquatic system. The present study describes the use of activated charcoal prepared from Thuja orientalis leaves (ACTOL) as an adsorbent to remove reactive anthraquinone dye Remazol Brilliant Blue R (RBBR) from its aqueous solution. In this work, leaves of the plant were carbonated to get fine charcoal which was activated by acid treatment and analysed by BET, SEM and FTIR techniques. Batch experiments were conducted to study the effect of pH, contact time, concentration and amount of adsorbent on the removal of RBBR in the concentration range 0.1-6.65 m mol L −1 . The highest efficiency was found to be 81% at pH 6 and contact time of 300 min. Adsorption data were analysed by Langmuir, Freundlich and Temkin isotherm models. The adsorption was found to follow Freundlich adsorption isotherm (R 2 = 0.9972). The kinetic study of the process was done by analysing the time adsorption data with pseudo-first-order, pseudo-second-order and intraparticle diffusion models, and it was found to obey pseudo-second-order kinetics. The adsorbent showed 73% of efficiency even after four regeneration cycles. FTIR analysis revealed that the various groups present at the surface of adsorbent were responsible for uptake of dye molecules. This study reveals that leaves of Thuja orientalis, a common biowaste, can be used as an efficient adsorbent for the removal of RBBR dye from its aqueous solution. It provides an economical and eco-friendly way to mitigate the waste and use it as an adsorbent.

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“…The reusability of adsorbent is one of the important parameters for practical application in terms of economic and cost effectiveness [5,77]. As shown in figure S8, the CR and IC removal efficiency remained at a relatively higher level for up to three cycles but decreased slightly thereafter.…”

Section: Regeneration Studiesmentioning

confidence: 99%

“…Apart from changing the properties of water, dye effluent also inhibits penetration of light into the water, making it unsuitable for aquatic life. Due to the toxic, carcinogenic, mutagenic and allergic nature of dyes, the direct discharge of untreated dye effluent can cause hazardous effects on living systems [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Solution combustion synthesis of calcium aluminate nanocomposite using coffee husk extract as green fuel and its application in adsorptive amputation of anionic dyes

Murthy

Gowrishankar

Chandraprabha

et al. 2020

Mater. Res. Express

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Solution combustion synthesis of calcium aluminate (CaAl 2 O 4 ) nanocomposite using coffee husk extract and its adsorption capacity for removal of Congo red (CR) and Indigo carmine (IC) are reported. Physiochemical properties of adsorbent were studied by PXRD, SEM, TEM and point of zero charge. Batch adsorption studies were conducted to study the effect of adsorbent dosage, pH, contact time, initial dye concentration and temperature on adsorption efficiency of coffee husk derived calcium aluminate nanocomposite (CHCA). Among the isotherms used, Langmuir model explained best the equilibrium data and the maximum monolayer adsorption capacity was found to be 377 and 135 mg/g for CR and IC, respectively. Mass transfer analysis indicated adsorptive removal of dyes was controlled by both external and internal diffusion. Pseudo-first-order model fitted best with experimental kinetic data and adsorption efficiency increased with an increase in the initial bulk concentration of CR and IC. Thermodynamic analysis indicated that adsorption of CR and IC on CHCA is feasible, spontaneous and exothermic in nature. The magnitude of enthalpy and heat of adsorption suggested that the adsorption is physical in nature. The present study explores the potential of coffee husk extract, an agro-based bio-waste, as a novel and eco-friendly fuel in the synthesis of CHCA and the synthesised nanocomposite as a potential adsorbent for the removal of synthetic dyes.

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Adsorption kinetics, isotherm and reusability studies for the removal of cationic dye from aqueous medium using arginine modified activated carbon

Cited by 386 publications

References 58 publications

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon

Adsorptive removal of Remazol Brilliant Blue R dye from its aqueous solution by activated charcoal of Thuja orientalis leaves: an eco-friendly approach

Solution combustion synthesis of calcium aluminate nanocomposite using coffee husk extract as green fuel and its application in adsorptive amputation of anionic dyes

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