Biobased carbon for effective removal of rhodamine B and Cr(VI) from aqueous solution: kinetic, isotherm and thermodynamic study

Kumbhar, Pramod D.; Patil, S. A.; Narale, Dattatray; Sartape, Ashish S.; Jambhale, Chitra L.; Kim, Jin-Hyeok; Kolekar, Sanjay S.

doi:10.1007/s13399-022-02625-8

Cited by 8 publications

(4 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 124,125 ] Activation followed by carbonization can promote the combustion of tar generated in the carbonization process, thus improving the porosity (total surface area up to 3000 m 2 g −1 ). [ 126 ] Activation can be conducted physically or chemically ( Table 1 ), where oxidative gases (steam or CO 2 ) or inorganic compounds such as acids (HNO 3 , H 3 PO 4 , H 2 SO 4 ), [ 127–133 ] bases (KOH, NaOH, LiOH) [ 129,134–137 ] and salts (K 2 S 2 O 8 , K 2 CO 3 , FeCl 3 , CaCl 2 , ZnCl 2 ) [ 89,127,138–144 ] are often used as activators. The porous active carbon obtained by physical activation usually possesses a medium specific surface area (SSA<1000 m 2 g −1 ) and relatively narrow micropores, while the carbon obtained by chemical activation owns a high porosity (SSA≈3000 m 2 g −1 ).…”

Section: Synthesis Methodsmentioning

confidence: 99%

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Qiu,

Li,

et al. 2023

Advanced Sustainable Systems

View full text Add to dashboard Cite

With the development of economy and increasing environmental awareness, how to effectively remove organic pollutants in wastewater is a research hotspot. Adsorption is one of the effective methods, and the adsorption material is the key factor to determine the efficiency. In this review, biomass‐derived carbon materials as adsorbents of organic pollutants and the adsorption mechanism are discussed in depth. The effects of carbonization and activation on the morphology and structure of carbon materials; the modification strategies of carbon adsorbents, the adsorption performance of biomass‐derived carbon materials for organic pollutants are described and illustrated; the future work of the biomass‐derived carbon materials is proposed.

show abstract

Section: Synthesis Methodsmentioning

confidence: 99%

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Qiu,

Li,

et al. 2023

Advanced Sustainable Systems

View full text Add to dashboard Cite

show abstract

“…[56] Among these, biochars from pomegranate biomass exhibited a maximum adsorption capacity of 73.01 mg/g for Cr(VI), with a maximum specific area of 2000 m 2 /g and a total pore volume of 1.2 cm 3 /g. Another study [57] utilized waste biomass-based partly graphitized AC from Samanea saman waste pods for the removal of Cr(VI) ions from aqueous solutions. It was observed that within 80 min, 98.3 % of Cr(VI) was removed at pH 2 using 2.5 g/L of the adsorbent at room temperature, with a synthesized AC exhibiting a surface area of 546.016 m 2 /g.…”

Section: Comparison Of the Studymentioning

confidence: 99%

Highly Porous Carbon Materials Prepared Through KOH‐Assisted CO₂‐Activation of Carbonized Waste Tires for Removal of Cr(VI) and Cd(II) from Water

Ahi,

Roshanravan,

Younesi

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

In this study, waste tires (WTs) were carbonized under an N2 atmosphere. Subsequently, KOH/WTs‐char with KOH‐assisted CO2 activation was used to prepare activated carbon (AC) as a highly porous carbon material for the removal of Cr(VI) and Cd(II) from water. Various techniques such as elemental analysis, Fourier‐transform infrared spectroscopy, scanning electron microscopy, and N2 adsorption/desorption were employed to investigate the physical and chemical characteristics of the prepared carbons. The WTs‐char activated with KOH under CO2 exhibited a microstructure with a high BET surface area and pore volume of 1841 m2/g and 0.869 cm3/g, respectively, demonstrating excellent adsorbent performance. The maximum removal efficiencies of 99.91 % for Cd(II) and 99.81 % for Cr(VI) were achieved using AC2 carbon under the following conditions: pH 2 for Cr(VI) and pH 5 for Cd(II), contact time of 120 min, adsorbent dose of 0.4 g/100 mL, and temperature of 298 K. The adsorption kinetics followed the pseudo‐second‐order equation, and the equilibrium data fit well with the Redlich–Peterson isotherm equation. The positive values of ▵G indicated that the uptake process for both ions was nonspontaneous and nonfeasible over the temperature studied. Both ions showed negative values of ΔH and ΔS on carbon, suggesting exothermic adsorption and a decrease in disorder. Regeneration studies showed that NaOH was a better desorbing agent than HCl. Cr(VI) desorption resulted in over 90 % removal recovery by AC2 using 1.0 M NaOH even after the fifth cycle. However, the low activation energy indicated that the adsorption was favorable kinetically. Overall, this study demonstrated the effective preparation of highly porous carbon and its successful performance in removing Cr(VI) and Cd(II) ions.

show abstract

“…Last decade various types of sorption materials for removing Cr(VI) from water, biosorbents [12], clay minerals [13], and organic resins [14] have been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Efficiently Removal Chromium (VI) Using Anion Exchanger on the base Polyvinylchloride: Isotherm, Kinetic and Thermodynamic Studies

Bekchanov

Mukhamediev

Babojonova

et al. 2022

Preprint

View full text Add to dashboard Cite

Chromium pollution of water is one of the severest environmental challenges threatening human health. Anion exchange material on the based polyvinylchloride have been demonstrated effective in dichromate ions removal. To study the structure morphology of the PPE-2 anion exchanger different characterization techniques such as XRD, FTIR, and SEM were applied. Moreover, the synthesized anion exchanger PPE-2 was used as effective removal for hexavalent chromium ions in aqueous media. The pseudo-first order and pseudo-second order used to evaluate the kinetic models and the mechanism of the adsorption. Results showed that the adsorption kinetics best fit the pseudo-second order model. The Freundlich isotherm and the pseudo-second order kinetic model were more consistent with the removal of ions from aqueous solutions. In the case of hexavalent chromium ions, the maximum adsorption capacity was 148,4 mg/g. Dubinin-Radushkevich (D-R) free energy of adsorption (ED) energy values were >16 kJ/mol which indicates chemical interaction between ion exchange material and Cr (VI) ions. Thermodynamic data revealed spontaneous endothermic processes and was a chemisorption reaction. In addition, results show that the anion exchanger (PPE-2) has high efficiency for removing hexavalent chromium ions from wastewater containing.

show abstract

Biobased carbon for effective removal of rhodamine B and Cr(VI) from aqueous solution: kinetic, isotherm and thermodynamic study

Cited by 8 publications

References 72 publications

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Highly Porous Carbon Materials Prepared Through KOH‐Assisted CO₂‐Activation of Carbonized Waste Tires for Removal of Cr(VI) and Cd(II) from Water

Efficiently Removal Chromium (VI) Using Anion Exchanger on the base Polyvinylchloride: Isotherm, Kinetic and Thermodynamic Studies

Contact Info

Product

Resources

About

Biobased carbon for effective removal of rhodamine B and Cr(VI) from aqueous solution: kinetic, isotherm and thermodynamic study

Cited by 8 publications

References 72 publications

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Biomass‐Derived Carbon Materials for the Adsorption of Organic Pollutants

Highly Porous Carbon Materials Prepared Through KOH‐Assisted CO2‐Activation of Carbonized Waste Tires for Removal of Cr(VI) and Cd(II) from Water

Efficiently Removal Chromium (VI) Using Anion Exchanger on the base Polyvinylchloride: Isotherm, Kinetic and Thermodynamic Studies

Contact Info

Product

Resources

About

Highly Porous Carbon Materials Prepared Through KOH‐Assisted CO₂‐Activation of Carbonized Waste Tires for Removal of Cr(VI) and Cd(II) from Water