Efficiency maximization of fixed-bed adsorption by applying hybrid statistical-phenomenological modeling

Sausen, Mateus Gustavo; Scheufele, Fabiano Bisinella; Alves, Helton José; Vieira, Melissa Gurgel Adeodato; Silva, Meuris Gurgel Carlos da; Borba, Fernando Henrique; Borba, Carlos Eduardo

doi:10.1016/j.seppur.2018.07.002

Cited by 27 publications

(11 citation statements)

References 47 publications

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“…To provide a rigorous comparison, the data sets were carefully selected to reflect different curve characteristics. The first data set, reported by Sausen et al (2018), exhibits a relatively symmetric curve shape. The second one, taken from the work of Nguyen et al (2019), is characterized by a leakage of contaminant at the column exit.…”

Section: Resultsmentioning

confidence: 99%

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Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Chu

2021

Preprint

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This paper reports the use of five probability cumulative distribution functions (normal, log-normal, logistic, Gompertz, and Weibull) to correlate published breakthrough data of water and air contaminants (ciprofloxacin, ammonium, hydrogen chloride, and hydrogen sulfide). Because the shape of the ciprofloxacin breakthrough curve is fairly symmetric, it is well correlated by all five functions (R2 > 0.99). They also provide a good representation of the overall shape of the ammonium breakthrough curve (R2 > 0.99). However, none can describe the leakage of ammonium during the initial period of column operation. The log-normal and Weibull functions give an excellent representation of the tailing HCl data while the normal, logistic, and Gompertz functions are quite poor. This difference in performance can be explained by the different characteristics of their inflection points. The log-normal and Weibull functions have a floating inflection point, which gives them flexibility in tracing the shape of the tailing data. The invariant inflection points of the normal, logistic, and Gompertz curves restrict their data fitting ability. Only the log-normal function can provide a reasonable fit to the H2S data with strong tailing. It is shown that the invariant inflection point of a probability function can be converted to a floating one. A version of the Gompertz function so modified provides a good quantitative correlation of the tailing data of H2S (R2 = 0.99).

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Section: Resultsmentioning

confidence: 99%

“…In this case study (Sausen et al 2018), a series of column experiments were performed to measure the breakthrough curves of ciprofloxacin as functions of bed height and flow rate.…”

Section: Case 1: Breakthrough Curve Of Ciprofloxacinmentioning

confidence: 99%

Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Chu

2021

Preprint

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“…onde ρL é a densidade do leito (g cm -3 ) e ρp é a densidade de partículas (densidade real) da resina (1,26 g cm -3 ), a qual foi obtida por picnometria de gás hélio (SAUSEN et al, 2018). A densidade do leito foi obtida pela equação (4.4):…”

Section: Metodologiaunclassified

“…Dessa forma, faz-se necessária a busca de métodos mais eficientes no tratamento de efluentes contendo fármacos. Dentre as técnicas comumente usadas no tratamento desses efluentes, destaca-se a adsorção, que consiste em uma operação unitária de transferência de massa na qual um ou mais componentes de uma fase fluida são transferidos para uma fase sólida, até que a condição de equilíbrio entre as fases seja atingida (SAUSEN et al, 2018). Dentre as vantagens do processo de adsorção, pode-se mencionar a não formação de intermediários e a possibilidade de tratamento de grandes volumes de contaminante.…”

Section: Introductionunclassified

Meio Ambiente, Sustentabilidade e Tecnologia – Volume 12

2022

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“…[3] Unfortunately, for pores at such a length scale, the long-lasting and ubiquitous challenge is their markedly increased mass-transport limitations due to long diffusion paths and narrow apertures, [4] resulting in reduced efficiency of the process. [5] Porous carbon materials that possess highly developed porosity and excellent stability are widely explored as adsorbents for selective CH 4 /N 2 separation. [6] The main separation mechanisms include targeted CH 4 or N 2 recognition, equilibrium or kinetic selectivity.…”

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confidence: 99%

Self‐Pillared Ultramicroporous Carbon Nanoplates for Selective Separation of CH₄/N₂

Wang

et al. 2021

Angewandte Chemie

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There is growing evidence that pillaring up a densely packed ultramicroporous two‐dimensional (2D) structure is an effective strategy to reduce their internal diffusion. Reliable pillaring paradigms, however, is rather challenging. Here we report a one‐pot multi‐component sequential assembly method for the preparation of a new self‐pillared 2D polymer and ultramicroporous carbon with integrated surface protrusions. The molecular level pillaring process is surprisingly fast, that is, in 10 min. The thickness of nanoplate edge and the density (roughness), angle as well as height of protrusions can be precisely tuned. Exemplified in coal bed methane purification/separation, this unique pillared 2D carbons exhibit a CH4/N2 selectivity up to 24 at a low CH4 partial pressure and two orders of magnitude faster CH4 diffusion kinetics than the commercial carbon molecular sieves. This solution synthesis methodology is generalizable for creation and fine tuning of pillared 2D heterostructures.

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Efficiency maximization of fixed-bed adsorption by applying hybrid statistical-phenomenological modeling

Cited by 27 publications

References 47 publications

Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Meio Ambiente, Sustentabilidade e Tecnologia – Volume 12

Self‐Pillared Ultramicroporous Carbon Nanoplates for Selective Separation of CH₄/N₂

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Efficiency maximization of fixed-bed adsorption by applying hybrid statistical-phenomenological modeling

Cited by 27 publications

References 47 publications

Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Using Probability Distribution Functions to Correlate Breakthrough Curves of Water and air Contaminants

Meio Ambiente, Sustentabilidade e Tecnologia – Volume 12

Self‐Pillared Ultramicroporous Carbon Nanoplates for Selective Separation of CH4/N2

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Product

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Self‐Pillared Ultramicroporous Carbon Nanoplates for Selective Separation of CH₄/N₂