Simultaneous removal of Cu2+, Ni2+and Zn2+ions using leftoverAzadirachta indicatwig ash

Singh, Jyoti; Mishra, Vishal

doi:10.1080/10889868.2020.1843394

Cited by 12 publications

(5 citation statements)

References 82 publications

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“…[146] say that the Hill and Koble-Corrigan models have the same mean relative percent error. This shows that these models are similar and are set up in the same way [147,148]. In the Brunauer-Emmett-Teller isotherm, surface tension effects have been added to the MacMillan-Teller isothermal model [149].…”

Section: Isothermmentioning

confidence: 87%

“…The Harkins-Jura isotherm considers the possibility of multilayer adsorption on the surface of the adsorbent having a heterogeneous pore distribution [159]. Mathematically, this model can be expressed as a linear equation (Equation ( 42)) [147]. Ref.…”

Section: Isothermmentioning

confidence: 99%

“…Ref. [160] assumed Halsey's isothermal model is mostly about the multilayer adsorption mechanism [147]. It is expressed as a linear equation (Equation (43)).…”

Section: Isothermmentioning

confidence: 99%

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Remediation of Heavy Metals Using Biomass-Based Adsorbents: Adsorption Kinetics and Isotherm Models

Abiodun,

Oluwaseun,

Oladayo

et al. 2023

Clean Technol.

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This study aims to comprehensively investigate the current advances in water treatment technologies for the elimination of heavy metals using biomass-based adsorbents. The enhancement of adsorption capacity in biomass materials is achieved through surface modification, which increases their porosity and surface area. The study therefore focuses on the impact of different surface modification techniques on the adsorption capacity, as well as the evaluation of adsorptive removal techniques and the analysis of various isotherm and kinetics models applied to heavy metal contaminants. The utilization of kinetic and isotherm models in heavy metal sorption is crucial as it provides a theoretical background to understand and predict the removal efficiency of different adsorbent materials. In contrast to previous studies, this research examines a wide range of adsorbent materials, providing a comprehensive understanding of their efficacy in removing heavy metals from wastewater. The study also delves into the theoretical foundations of the isotherm and kinetics models, highlighting their strengths, limitations, and effectiveness in describing the performance of the adsorbents. Moreover, the study sheds light on the regenerability of adsorbents and the potential for their engineering applications. Valuable insights into the state-of-the-art methods for heavy metal wastewater cleanup and the resources required for future developments were discussed.

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Section: Isothermmentioning

confidence: 87%

Section: Isothermmentioning

confidence: 99%

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Remediation of Heavy Metals Using Biomass-Based Adsorbents: Adsorption Kinetics and Isotherm Models

Abiodun,

Oluwaseun,

Oladayo

et al. 2023

Clean Technol.

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“…In this work, Cu 2+ was chosen for intercalation into δ-MnO 2 because although Cu 2+ and Zn 2+ have similar diameters, Cu 2+ has a slightly higher electronegativity than Zn 2+ [36]. Given that Cu 2+ has a stronger interaction with the MnO 2 lattice than Zn 2+ and H + , it cannot move out during the intercalation/deintercalation of Zn 2+ and H + .…”

Section: Introductionmentioning

confidence: 99%

Selection of Cu2+ for intercalation from the electronegativity perspective: Improving the cycle stability and rate performance of δ-MnO2 cathode material for aqueous zinc-ion batteries

Liu

Zhang

et al. 2022

Sci. China Mater.

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Ion intercalation is an effective strategy for improving the cycle stability and rate performance of δ-MnO 2 as a cathode material for aqueous zinc-ion batteries. However, in practice, ion selection appears rather arbitrary. In this work, Cu 2+ was chosen for δ-MnO 2 intercalation because although Cu 2+ and Zn 2+ have similar diameters, Cu 2+ has a slightly higher electronegativity (1.359) than Zn 2+ (1.347). Therefore, Cu 2+ has a stronger interaction with the MnO 2 lattice than Zn 2+ and can be stable during the intercalation/ deintercalation of Zn 2+ and H + . Results showed that the performance of Cu-doped δ-MnO 2 (CMO) was greatly improved. Moreover, at the high current density of 2 A g −1 , CMO achieved excellent cycle stability with 100% capacity retention after 600 cycles, whereas pristine δ-MnO 2 exhibited only 23% capacity retention. When the current density was increased from 0.2 to 2.0 A g −1 , the CMO electrode also delivered remarkable rate performance with 72% capacity retention, which was considerably higher than the 32% capacity retention demonstrated by pristine δ-MnO 2 . Given that Cu 2+ has a greater electronegativity than Zn 2+ , the Cu-O bond formed in CMO acted as a stable structural column and greatly improved the stability of CMO. Cu 2+ doping also increased the electronic conductivity and ionic conductivity of CMO and reduced the charge transfer resistance of H + and Zn 2+ at the electrode/ electrolyte interface, which improved the rate performance of CMO greatly. This work provides new insights into intercalation strategies to improve the electrochemical performance of batteries.

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“…At the same time, natural biosorbents such as Azadirachta indica twig ash (Singh and Mishra 2020a) or activated carbon derived from Tectona grandis sawdust (Singh and Mishra 2020b) are promising alternatives to be used in the simultaneous removal of heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of nickel, cobalt, zinc and copper ions by Serratia marcescens strain 16 in mono and multimetallic systems

et al. 2021

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The metallurgical industry is one of the main sources of heavy metal pollution, which represents a severe threat to life. Metals can be removed from aqueous solutions by using microbial biomasses. This paper analyses the heavy metal biosorption capacity of Serratia marcescens strain 16 in single and multimetallic systems. The results obtained show that Co(II), Ni(II) and Zn(II) biosorption in monometallic systems is two to three times higher than in the presence of bi-metallic and multimetallic solutions. Fourier transform infrared spectroscopy confirmed that carbonyl, carboxyl and hydroxyl were the main functional groups, as well as the amide bands I and II involved in metal uptake, which are present in external structures of the bacterial cell. The results obtained demonstrated the viability of S. marcescens strain 16 as a biosorbent for the design of eco-friendly technologies for the treatment of waste liquor.

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Simultaneous removal of Cu²⁺, Ni²⁺and Zn²⁺ions using leftoverAzadirachta indicatwig ash

Cited by 12 publications

References 82 publications

Remediation of Heavy Metals Using Biomass-Based Adsorbents: Adsorption Kinetics and Isotherm Models

Remediation of Heavy Metals Using Biomass-Based Adsorbents: Adsorption Kinetics and Isotherm Models

Selection of Cu2+ for intercalation from the electronegativity perspective: Improving the cycle stability and rate performance of δ-MnO2 cathode material for aqueous zinc-ion batteries

Biosorption of nickel, cobalt, zinc and copper ions by Serratia marcescens strain 16 in mono and multimetallic systems

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