Modeling the adsorption kinetics of some priority organic pollutants in water from diffusion and activation energy parameters

Sarkar, Mitali; Acharya, Pradip Kumar; Bhattacharya, Bhaskar

doi:10.1016/s0021-9797(03)00551-4

Cited by 221 publications

(96 citation statements)

References 24 publications

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“…For a solid-liquid sorption process, the solute transfer is usually characterized by external mass transfer (boundary layer diffusion), or intraparticle diffusion or both (Sarkar et al 2003). The plot of q t versus t 0.5 as shown in Table 7.…”

Section: Intraparticle Diffusion Modelmentioning

confidence: 99%

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

et al. 2015

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This study was carried out to investigate the treatability of ion exchange resin (Indion MB 6 SR) for the removal of chromium (VI), aluminium (III), zinc (II), copper (II), iron (II), and phosphate (PO 4 ) 3-, chemical oxygen demand (COD), ammonia nitrogen (NH 3 -N) and colour from semi-aerobic stabilized leachate by batch test. A range of ion exchange resin dosage was tested towards the removal efficiency of leachate parameters. It was observed that equilibrium data were best represented by the Langmuir model for metal ions and Freundlich was ideally fit for COD, NH 3 -N and colour. Intra particle diffusion model, pseudo first-order and pseudo second-order isotherm models were found ideally fit with correlation of the experimental data. The findings revealed that the models could describe the ion exchange kinetic behaviour efficiently, which further suggests comprehensive outlook for the future research in this field.

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Section: Intraparticle Diffusion Modelmentioning

confidence: 99%

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

et al. 2015

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“…For this purpose, the Boyd equation was applied. This equation is given by [9] (1) F = 1 − 6 π 2 exp(−Bt), where F is the fraction of solute sorbed at any time t (i.e., q/q e ), and Bt is a mathematical function of F . Rearranging the above equation gives…”

Section: Kinetic Analysismentioning

confidence: 99%

“…The obtained curves demonstrate linear behavior at the initial stages of sorption. It is reported that if the lines do not pass through the origin during the initial steps of the sorption process, then external transport is the rate-limiting step [9]. This suggests that once Co 2+ ions reach the interlayer region they rapidly diffuse through and attach to sorption sites.…”

Section: Kinetic Analysismentioning

confidence: 99%

A characterization study of some aspects of the adsorption of aqueous Co2+ ions on a natural bentonite clay

Shahwan

Erten

Ünügür

2006

Journal of Colloid and Interface Science

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The natural bentonite used in this study contained montmorillonite in addition to low cristobalite. The uptake of aqueous Co 2+ ions was investigated as a function of time, concentration, and temperature. In addition, the change in the interlayer space of montmorillonite was analyzed using XRPD, and the distribution of fixed Co 2+ ions on the heterogeneous clay surface was recorded using EDS mapping. The sorbed amount of Co 2+ appeared to closely follow Freundlich isotherm, with the sorption process showing apparent endothermic behavior. The relevance of the apparent H o values is briefly discussed. Analysis of the Co-sorbed bentonite samples using SEM/EDS showed that the montmorillonite fraction in the mineral was more effective in Co 2+ fixation than the cristobalite fraction. XRPD analysis demonstrated that the interlayer space of montmorillonite was slightly modified at the end of sorption.

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“…여기서 qm은 최대 제거량(mg/g), kL는 Langmuir 상수(L/mg), PSf-Al(OH)3 비드에 의한 불소 이온의 내부확산 단계를 살 펴보기 위하여 Boyd 속도식을 사용하였다 [23]. …”

Section: Psf-al(oh)3 비드에 의한 불소 이온의 평형실험 결과를unclassified

Removal Characteristics of Fluoride Ions by PSf-Al(OH)₃Beads Immobilized Al(OH)₃with Polysulfone

Jeon¹,

Lee

2014

Clean Technology

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주제어 : 알루미늄 수산화물, 폴리술폰, 불소, 고정화 Abstract : In this study, PSf-Al(OH)3 beads were prepared by immobilizating aluminum hydroxide Al(OH)3 with polysulfone (PSf). The removal experiments of the fluoride ions by PSf-Al(OH)3 beads were conducted batchwise and the parameters such as pH, initial fluoride concentration, and coexisting ions were investigated. The maximum removal capacity obtained from Langmuir isotherm was 52.4 mg/g and the optimum pH region of fluoride ions was in the range of 4 to 10. The removal process of fluoride ions by PSf-Al(OH)3 beads was found to be controlled by both external mass transfer at the earlier stage followed by internal diffusion at the later stage. The presence of coexisting anions such as HCO3 -, SO4 2-, NO3 -, and Cl -had a negative effect on removal of fluoride ions by PSf-Al(OH)3 beads.

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Modeling the adsorption kinetics of some priority organic pollutants in water from diffusion and activation energy parameters

Cited by 221 publications

References 24 publications

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

A characterization study of some aspects of the adsorption of aqueous Co2+ ions on a natural bentonite clay

Removal Characteristics of Fluoride Ions by PSf-Al(OH)₃Beads Immobilized Al(OH)₃with Polysulfone

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Modeling the adsorption kinetics of some priority organic pollutants in water from diffusion and activation energy parameters

Cited by 221 publications

References 24 publications

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

Semi-aerobic stabilized landfill leachate treatment by ion exchange resin: isotherm and kinetic study

A characterization study of some aspects of the adsorption of aqueous Co2+ ions on a natural bentonite clay

Removal Characteristics of Fluoride Ions by PSf-Al(OH)3Beads Immobilized Al(OH)3with Polysulfone

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Product

Resources

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Removal Characteristics of Fluoride Ions by PSf-Al(OH)₃Beads Immobilized Al(OH)₃with Polysulfone