Nitrate removal using poly- o -toluidine zirconium(IV) ethylenediamine as adsorbent: Batch and fixed-bed column adsorption modelling

Rahman, Nafisur; Khan, Mohammad Fazeel

doi:10.1016/j.jwpe.2016.01.007

Cited by 32 publications

(5 citation statements)

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“…is model assumed plug ow behavior in the bed and used Langmuir isotherm for equilibrium and the second-order reversible kinetics [48]. e model was described by the following equation:…”

Section: Application Of Omas Model and Yoon-nelson Modelmentioning

confidence: 99%

Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Liu

Wang

2018

Advances in Materials Science and Engineering

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Coconut granular activated carbon (CGAC) was modified by impregnating with ZnCl 2 solution to remove nitrate from aqueous solutions. Sorption isotherm and kinetic studies were carried out in a series of batch experiments. Nitrate adsorption of both ZnCl 2 -modified CGAC and CGAC fitted the Langmuir and Freundlich models. Batch adsorption isotherms indicated that the maximum adsorption capacities of ZnCl 2 -modified CGAC and CGAC were calculated as 14.01 mgN·g −1 and 0.28 mgN·g −1 , respectively. e kinetic data obtained from batch experiments were well described by pseudo-second-order model. e column study was used to analyze the dynamic adsorption process. e highest bed adsorption capacity of 1.76 mgN·g −1 was obtained by 50 mgN·L −1 inlet nitrate concentration, 20 g adsorbents, and 10 ml·min −1 flow rate. e dynamic adsorption data were fitted well to the omas and Yoon-Nelson models with coefficients of correlation R 2 > 0.834 at different conditions. Surface characteristics and pore structures of CGAC and ZnCl 2 -modified CGAC were performed by SEM and EDAX and BET and indicated that ZnCl 2 had adhered to the surface of GAC after modified. Zeta potential, Raman spectra, and FTIR suggested the electrostatic attraction between the nitrate ions and positive charge. e results revealed that the mechanism of adsorption nitrate mainly depended on electrostatic attraction almost without any chemical interactions.

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“…is model assumed plug ow behavior in the bed and used Langmuir isotherm for equilibrium and the second-order reversible kinetics [48]. e model was described by the following equation:…”

Section: Application Of Omas Model and Yoon-nelson Modelmentioning

confidence: 99%

Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Liu

Wang

2018

Advances in Materials Science and Engineering

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“…Currently, synthesis of organic-inorganic composite materials is gaining attention because of their multifunctional and enhanced adsorption properties. [36][37][38][39] Polydopamine is highly conjugated organic material and have abundant adhesive functional groups. It can be synthesized by the oxidative polymerization of dopamine in acidic and slightly alkaline conditions.…”

Section: Introductionmentioning

confidence: 99%

Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology

Rahman

Varshney

2020

RSC Adv.

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“…The ion exchanger contains mobile cations or anions in fixed ion exchange sites that exchange with a stoichiometric number of the same charge ions when interacting with aqueous solutions. Ion exchangers can also be cation or amphoteric ion exchangers, which exchange anions and cations together 93–97 . Figure 4 shows a schematic diagram of the principle of ion exchange work.…”

Section: Wastewater Treatmentmentioning

confidence: 99%

“…Ion exchangers can also be cation or amphoteric ion exchangers, which exchange anions and cations together. [93][94][95][96][97] Figure 4 shows a schematic diagram of the principle of ion exchange work.…”

Section: Ion Exchangementioning

confidence: 99%

Sustainable environment through using porous materials: A review on wastewater treatment

Al‐Jubouri

Al‐Batty

Al‐Hamd

et al. 2023

Asia-Pacific J Chem Eng

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Porous materials play an important role in creating a sustainable environment by improving wastewater treatment's efficacy. Porous materials, including adsorbents or ion exchangers, catalysts, metal–organic frameworks, composites, carbon materials, and membranes, have widespread applications in treating wastewater and air pollution. This review examines recent developments in porous materials, focusing on their effectiveness for different wastewater pollutants. Specifically, they can treat a wide range of water contaminants, and many remove over 95% of targeted contaminants. Recent advancements include a wider range of adsorption options, heterogeneous catalysis, a new UV/H2O2 procedure, ion exchange, Fenton oxidation, membrane activities, ozonation, membrane bioreactor, electrochemical treatment, wet air oxidation, and a carbon capture methodology utilizing various porous materials. A particular focus for innovative research is on developing technologies to synthesize porous materials and assess their performance in removing various pollutants from wastewater at varying experimental conditions. Porous materials can be essential in designing wastewater treatment systems to address the critical environmental issues of water stress and safe drinking water worldwide.

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Nitrate removal using poly- o -toluidine zirconium(IV) ethylenediamine as adsorbent: Batch and fixed-bed column adsorption modelling

Cited by 32 publications

References 50 publications

Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology

Sustainable environment through using porous materials: A review on wastewater treatment

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Nitrate removal using poly- o -toluidine zirconium(IV) ethylenediamine as adsorbent: Batch and fixed-bed column adsorption modelling

Cited by 32 publications

References 50 publications

Adsorption of Nitrate onto ZnCl2‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl2‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Assessment of ampicillin removal efficiency from aqueous solution by polydopamine/zirconium(iv) iodate: optimization by response surface methodology

Sustainable environment through using porous materials: A review on wastewater treatment

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Product

Resources

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Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics

Adsorption of Nitrate onto ZnCl₂‐Modified Coconut Granular Activated Carbon: Kinetics, Characteristics, and Adsorption Dynamics