Detailed numerical solution of pore volume and surface diffusion model in adsorption systems

Souza, P.R.; Dotto, Guilherme L.; Salau, Nina Paula Gonçalves

doi:10.1016/j.cherd.2017.04.021

Cited by 90 publications

(37 citation statements)

References 41 publications

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“…The sorption/desorption mechanism can be monitored or studied using some spectroscopic techniques (reviewed by Verla et al [172]) as well as using different sorption kinetics and isotherms models such as pseudo-first-order (PFO), pseudo-second-order (PSO), or the intra-particle models [69,176,177,186], linear, Freundlich, Langmuir models, Polanyi-Dubinin-Manes model [71,147], porevolume diffusion model (PVDM), pore-volume and surface diffusion model (PVSDM) ( [119,120,151]), poly-parameter linear free energy relationship [72,156] and film-pore mass transfer (FPMT) [56].…”

Section: Adsorption and Desorption Mechanism Of Toxic Chemicals Onto mentioning

confidence: 99%

Microplastic–toxic chemical interaction: a review study on quantified levels, mechanism and implication

et al. 2019

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Current problem facing researchers globally is microplastics as well as toxic chemical pollution of the ecosystem. Microplastics carry toxic chemicals in the ecosystem serving as a vector for transport. In this study, a review of the literature has been conducted with the following objectives: (1) to summarize the concentrations of toxic chemicals such heavy metals and hydrophobic organic contaminants sorped on microplastics; (2) to evaluate their spatial distribution regarding adsorbed contaminant; (3) to discuss plausible mechanism by which microplastics adsorp or desorp toxic chemicals in the environment; (4) to discuss implications of their occurrence in air, water and soil media; and (5) to discuss the impact of ingested microplastics to human health. Microplastics are ubiquitous environmental contaminant. Concentrations of sorped toxic chemical varied by location which represents a local problem; industrialized areas (especially areas experiencing crude oil-related activities or have history of crude oil pollution) have higher concentrations than less industrialized areas. Ingestion of microplastics has been demonstrated in a range of marine and soil organisms as well as edible plants, thus possibly contaminating the base of the food web. Potential health effect to human is by particle localization, chemical toxicity and microbial toxins. We conclude by highlighting the gap in knowledge and suggesting key future areas of research for scientists and policymakers.

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Section: Adsorption and Desorption Mechanism Of Toxic Chemicals Onto mentioning

confidence: 99%

Microplastic–toxic chemical interaction: a review study on quantified levels, mechanism and implication

et al. 2019

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“…Adsorption kinetics of RBBR on ACTOL was studied by analysing the time adsorption data with pseudo-first-order [40], pseudo-second-order [41] and intraparticle diffusion models [42] according to the following equations: Pseudo-first-order equation:…”

Section: Kinetic Studymentioning

confidence: 99%

Adsorptive removal of Remazol Brilliant Blue R dye from its aqueous solution by activated charcoal of Thuja orientalis leaves: an eco-friendly approach

et al. 2020

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Anthraquinone dyes are one of the major water pollutants due to their stability and persistence in the aquatic system. The present study describes the use of activated charcoal prepared from Thuja orientalis leaves (ACTOL) as an adsorbent to remove reactive anthraquinone dye Remazol Brilliant Blue R (RBBR) from its aqueous solution. In this work, leaves of the plant were carbonated to get fine charcoal which was activated by acid treatment and analysed by BET, SEM and FTIR techniques. Batch experiments were conducted to study the effect of pH, contact time, concentration and amount of adsorbent on the removal of RBBR in the concentration range 0.1-6.65 m mol L −1 . The highest efficiency was found to be 81% at pH 6 and contact time of 300 min. Adsorption data were analysed by Langmuir, Freundlich and Temkin isotherm models. The adsorption was found to follow Freundlich adsorption isotherm (R 2 = 0.9972). The kinetic study of the process was done by analysing the time adsorption data with pseudo-first-order, pseudo-second-order and intraparticle diffusion models, and it was found to obey pseudo-second-order kinetics. The adsorbent showed 73% of efficiency even after four regeneration cycles. FTIR analysis revealed that the various groups present at the surface of adsorbent were responsible for uptake of dye molecules. This study reveals that leaves of Thuja orientalis, a common biowaste, can be used as an efficient adsorbent for the removal of RBBR dye from its aqueous solution. It provides an economical and eco-friendly way to mitigate the waste and use it as an adsorbent.

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“…The sorption/desorption mechanism can be monitored or studied using some spectroscopic techniques (reviewed by Verla et al, 2019a) as well as using different sorption kinetics and isotherms models such as pseudo-first-order (PFO), pseudo-second-order (PSO), or the intra-particle models Hu et al, 2017;Wang and Wang, 2018a;, linear, Freundlich, Langmuir models, Polanyi-Dubinin-Manes model (Hüffer and Hofmann, 2016;Sven et. al., 2019), pore-volume diffusion model (PVDM), pore-volume and surface diffusion model (PVSDM) (Ocampo-Perez et al, 2010;Souza et al, 2017;Ocampo-Perez et al, 2017), poly-parameter linear free energy relationship (Hüffer et al 2018;Sven et. al., 2019) and film-pore mass transfer (FPMT) (Guo and Wang, 2019).…”

Section: Adsorption and Desorption Mechanism Of Toxic Chemicals Onto mentioning

confidence: 99%

Microplastic-Toxic Chemical Interaction: A Review Study on Quantified Levels, Mechanism and Implication

Wirnkor¹,

Enyoh²,

Ngozi³

et al. 2019

Preprint

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Current problem facing researchers globally is microplastics as well as toxic chemical pollution of the ecosystem. Microplastics carry toxic chemicals in the ecosystem.serving as a vector for transport. In this study, a review of the literature has been conducted with the following objectives: (1) to summarise the concentrations of toxic chemicals such heavy metals and hydrophobic organic contaminants sorped on microplastics; (2) to evaluate their spatial distribution regarding adsorbed contaminant (3) to discuss plausible mechanism by which microplastics adsorp or desorp toxic chemicals in the environment; (4) to discuss implications of their occurrence in air, water and soil media; and (5) to discuss the impact of ingested microplastics to human health. Microplastics are ubiquitous environmental contaminant. Concentrations of sorped toxic chemical varied with location which represents a local problem; industrialized areas (especially areas experiencing crude oil related activities or have history of crude oil pollution) have higher concentrations than less industrialized areas. Ingestion of microplastics has been demonstrated in a range of marine and soil organisms as well as edible plants, thus possible contaminating the base of the food-web. Potential health effect to human is by particle localization, chemical toxicity and microbal toxins. We conclude by highlighting the gap in knowledge and suggesting key future areas of research for scientists and policymakers.

show abstract

Detailed numerical solution of pore volume and surface diffusion model in adsorption systems

Cited by 90 publications

References 41 publications

Microplastic–toxic chemical interaction: a review study on quantified levels, mechanism and implication

Microplastic–toxic chemical interaction: a review study on quantified levels, mechanism and implication

Adsorptive removal of Remazol Brilliant Blue R dye from its aqueous solution by activated charcoal of Thuja orientalis leaves: an eco-friendly approach

Microplastic-Toxic Chemical Interaction: A Review Study on Quantified Levels, Mechanism and Implication

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