Removal of Cd(II) and Pb(II) ions from aqueous solutions by synthetic mineral adsorbent: Performance and mechanisms

Chen, Gongning; Shah, Kinjal J.; Shi, Lin; Chiang, Pen‐Chi

doi:10.1016/j.apsusc.2017.03.022

Cited by 118 publications

(36 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the BET surface area of the CES increased by 3.51‐ to 23.52‐fold compared to that of coffee grounds, eggshell, and sericite, which may be owing to the pyrolysis of the adsorbent that is expected to increase the adsorption capacity of heavy metals. Similar results were reported by Choi (), Wanga et al (), and Chen et al (). The specific surface area of CES was 28.63 m 2 /g, corresponding to the mesoporous range.…”

Section: Resultssupporting

confidence: 92%

“…Therefore, the Pb(II) adsorption process using CES can be conducted at a higher temperature and is spontaneous. In general, a Δ G ° value between 0 and −20 (kJ/mol) during adsorption indicates a physical adsorption process (Alhogbi, ; Chen et al, ). The Δ G ° value of the Pb(II) adsorption process using CES was below −8.138 (kJ/mol) at all temperatures, indicating that it was physical rather than chemical.…”

Section: Resultsmentioning

confidence: 99%

“…indicates a physical adsorption process (Alhogbi, 2017;Chen et al, 2017). The ΔG° value of the Pb(II) adsorption process using CES was below −8.138 (kJ/mol) at all temperatures, indicating that it was physical rather than chemical.…”

Section: Research Articlementioning

confidence: 94%

“…However, bio‐adsorption has the disadvantages of a low adsorption efficiency and long processing time (Yu & Choi, ). Recently, many researchers have studied methods to remove heavy metals from aqueous solutions using biomaterials and wastes (Chen, Shah, Shi, & Chiang, ; Khatoon, Uddin, & Rao, ; Lee & Choi, ; Singh et al, ). Among the various methods, adsorption is very economical because it has a high treatment efficiency, short processing time, low sludge production, and ability to reuse the adsorbent (Anastopoulos, Karamesouti, Mitropoulos, & Kyzas, ; Choi & Yu, ; Islam et al, ).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Choi

2019

Water Environment Research

View full text Add to dashboard Cite

A hybrid adsorbent (CES), coffee grounds, eggshell powder and sericite as a binder, was prepared to remove Pb(II) from aqueous solution. The Fourier‐transform infrared spectroscopy analysis showed that the CES contained a large amount of OH groups and had a favorable structure for adsorbing heavy metals. The value of pHpzc of CES was estimated at 7.08. In the neutral pH region, the surface of CES is negatively charged and favorable for adsorption of Pb(II). The maximum Langmuir adsorption amount was 155.67 mg/g, and the adsorption process of Pb(II) using CES fitted pseudo‐second‐order kinetic model and Langmuir isotherm model. Moreover, the analysis of adsorption energy, free energy, enthalpy, and entropy found that the adsorption of Pb(II) onto CES was physical and a spontaneous exothermic reaction. CES is a hybrid adsorbent using general municipal waste and has great advantages in terms of environmental conservation and sustainable environmental circulation. This allows it to compete with other adsorbents. Practitioner points A hybrid adsorbent, coffee grounds, eggshell, and sericite (CES), was used to remove Pb(II) Adsorption of Pb(II) using CES in an aqueous solution was physical rather than chemical CES contained a large amount of OH groups and had a favorable structure for adsorbing heavy metals The reactivity and strength of the adsorption of Pb(II) onto CES was very good CES has great advantages in terms of environmental conservation and sustainable environmental circulation.

show abstract

Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Research Articlementioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Choi

2019

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…The experimental retentions obtained for lead ion removal were not comparable with those reported in literature (zeolites, ion exchange resins) [28][29][30][31], but the novelty of this approach was to re-use lead ion-laden perlite as lightweight material for the preparation of environmentally-safe and thermal insulating cement conglomerates. This is also remarkable considering that an hazardous waste can be embedded in a cement matrix and re-used in the construction industry instead of being sent to landfill [32,33].…”

Section: Resultsmentioning

confidence: 71%

Porous Alumosilicate Aggregate as Lead Ion Sorbent in Wastewater Treatments

et al. 2017

View full text Add to dashboard Cite

Porous alumosilicate aggregate, namely perlite, was used as an alternative material in wastewater treatments for the selective removal of ionic pollutants such as lead which is present in industrial wastewaters and toxic at relatively low concentrations. Metal retention was investigated by single metals and multispecies equilibrium isotherms (batch system) and by carrying out dynamic (column) experiments. Lead ions were supposedly preferentially retained by ion exchange at the negatively charged silicate functional groups present on the perlite material, and to a minor extent by weak electrostatic (Van der Waals) interactions at non-specific functionalities. In the case of the batch system, the Freundlich isotherm gave a good correlation of the experimental data and lead maximum retention (q max ) in single ion solution was 4.28 mg/g perlite , and in multimetal solution was 1.50 mg/g perlite . In the case of the column system, overall capacity was 3.7 mg/g perlite in single ion solution, and in multimetal solution was 3.0 mg/g perlite . In multimetal solutions, lead ions showed the best interaction at the perlite functional groups because of the lowest free energies of hydration and hydrated radius. After sorption, perlite beads were used as lightweight aggregates for cement mortars after evaluation of the potential release of lead ions from the conglomerates.

show abstract

Nanocellulose‐Based Ultralight Porous Material for Various Environmental Applications

Mathew,

Poulose,

Gopakumar

et al. 2024

Nanomaterials for Air‐ and Water Purification

View full text Add to dashboard Cite

Removal of Cd(II) and Pb(II) ions from aqueous solutions by synthetic mineral adsorbent: Performance and mechanisms

Cited by 118 publications

References 36 publications

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Assessment of the adsorption kinetics, equilibrium, and thermodynamic for Pb(II) removal using a low‐cost hybrid biowaste adsorbent, eggshell/coffee ground/sericite

Porous Alumosilicate Aggregate as Lead Ion Sorbent in Wastewater Treatments

Nanocellulose‐Based Ultralight Porous Material for Various Environmental Applications

Contact Info

Product

Resources

About