Comparative sorption kinetic studies of ammonium onto zeolite

Wen, Donghui; Ho, Yuh‐Shan; Tang, Xiaoyan

doi:10.1016/j.jhazmat.2005.10.020

Cited by 129 publications

(67 citation statements)

References 26 publications

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“…In general, assuming that the adsorption rate depends only on the surface area, the surface area of smaller particle will increase, and then dispersion path is shorten in the small adsorbent particle, because it provide a better opportunity to make the absorbed ions penetrate all internal pore structure [33,49,50] . The effect of particle size on the adsorption capacity of ammonia nitrogen has been also confirmed by the use of zeolite previously [51,52] .…”

Section: Particle Size Of Biocharmentioning

confidence: 69%

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Liang

Huang

et al. 2016

MATEC Web Conf.

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.The study on decreasing ammonia-nitrogen has received great attention in recent years. This paper summarizes the adsorption mechanism and the influencing factors. Thus, the feasibility of adsorption using biochar has been indicated. A few issues were proposed for the further study: the industrial application research on treatment, modification method for improving the efficiency of adsorption, desorption and regeneration of biochar ,model of adsorption mechanism, the physical and chemical properties of soil .

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Section: Particle Size Of Biocharmentioning

confidence: 69%

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Liang

Huang

et al. 2016

MATEC Web Conf.

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“…This study concluded that it is not appropriate to use R 2 to compare the fitting of kinetic models, but did not propose an alternative. More recent research (Wen et al 2006;Ho 2006) also failed to put forward an improved model selection methodology. This paper applies the BIC, LILC, and AIC model selection criterion along with the F-test and the coefficient of determination (R 2 ) to compare the relative and absolute performance of six candidate models applied to high resolution kinetic data from eight experimental systems varying in pCO 2 and calcite surface area.…”

Section: Model Backgroundmentioning

confidence: 99%

Kinetic model selection and the Hill model in geochemistry

Turner

Henley

Sleap

et al. 2014

Int. J. Environ. Sci. Technol.

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This study introduces the Hill model for modelling sorption kinetics and illustrates its efficacy using formal model selection procedures. Although the coefficient of determination (R 2 ) value can be used to ensure goodness-of-fit of a particular model to a set of data, a measure that incorporates the number of model parameters, such as the Bayesian information criterion, law of iterated logarithm criterion, Akaike information criterion, and the extra sum-of-squares F-test is necessary to undertake reliable model selection. This study undertook a formal model selection procedure based on these criteria, in combination with the coefficient of determination, for a range of candidate kinetics sorption models [the pseudo-second order (PSO), the intra-particle diffusion (IPD), Power, Elovich, and the four and five parameter Hill models]. It was found that the model order that statistically best described the data was Hill 5 [ Hill 4 [ pseudo-second order [ Elovich [ Power [ IPD as given by the evidence ratios, information criterion weights and Bayes factors. The extra sum-of-squares F-test, only applicable to nested models, confirms the best fit order as Hill 5 [ Hill 4 [ PSO models. Two new parameters (T and k Hill ) have also been defined that give the Hill models a mechanistic meaning directly comparable to the well-defined parameters of the pseudo-second-order model, namely, the pseudo-secondorder rate constant k pso and the instantaneous sorption coefficient h pso . In the field of geochemistry the use of the four and five parameter Hill models for describing sorption kinetics has been overlooked with many studies favouring the PSO model. It is strongly recommended that the Hill model be considered more widely as a general predictive tool in geochemistry.

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“…However, it is presumed that, in addition to mortality, electrolyte imbalance resulting from increased branchial permeability (Wendelaar Bonga, 1997), contributed to the results in the control group. Although the group exposed to zeolite also showed a statistically higher mortality rate to that found in the groups exposed to salt, it showed total ammonia levels statistically lower (p <0.05) than the other groups, which resulted from the adsorption of ammonia by zeolite (Singh et al, 2004;Wen et al, 2006). The lower mortality ammonia levels in the zeolite group compared with the control group may reflect the deleterious effect of total ammonia levels reached in the control group.…”

Section: Discussionmentioning

confidence: 70%

Use of sodium chloride and zeolite during shipment of Ancistrus triradiatus under high temperature

et al. 2011

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The use of sodium chloride (0.5 g/L and 1 g/L) and zeolite (22.7 g/L) during shipment (48 h) of Ancistrus triradiatus at high temperatures (between 24.5 and 34°C) were evaluated. Several water quality parameters (dissolved oxygen, pH, conductivity, and total ammonia) were measured before and after shipment. Glycemia was measured before shipment and at 24 and 48 h after shipment. After shipment, a resistance test was carried out in a high concentration of sodium chloride, and mortality was recorded after shipment, and 7 days post-shipment. While the two evaluated substances increased survival of A. triradiatus challenged by high temperatures during shipment, the best result was obtained with 1 g/L of sodium chloride.O uso de cloreto de sódio (0,5 g/L e 1 g/L) e zeolita (22,7 g/L) foram avaliados durante o transporte (48 h) de Ancistrus triradiatus em altas temperaturas (entre 24,5 e 34°C). Os seguintes parâmetros foram monitorados: pH, oxigênio dissolvido, condutividade e amônia antes e depois do transporte. Também foi mensurada a concentração de glicose no sangue antes do transporte e 0, 24 e 48 h após o transporte. Foi realizado um teste de resistência a altas concentrações de cloreto de sódio após o transporte, sendo registrada a mortalidade no final do transporte e após 7 dias. As duas substâncias testadas aumentam a sobrevivência de A. triradiatus a altas temperaturas durante o transporte, porém o melhor resultado foi obtido com o uso de 1 g/L cloreto de sódio.

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Comparative sorption kinetic studies of ammonium onto zeolite

Cited by 129 publications

References 26 publications

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Kinetic model selection and the Hill model in geochemistry

Use of sodium chloride and zeolite during shipment of Ancistrus triradiatus under high temperature

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