Adsorption and desorption of uranium (VI) in aerated zone soil

Li, Xiaolong; Wu, Jiaojiao; Liao, Jiali; Zhang, Dong; Yang, Jijun; Feng, Yue; Zeng, Junhui; Wen, Wei; Yang, Yuanyou; Tang, Jun; Liu, Ning

doi:10.1016/j.jenvrad.2012.08.006

Cited by 40 publications

(15 citation statements)

References 25 publications

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“…The increase of sorption with an increase sorbent amount may be attributed to the availability of more sorption sites. With the content of magnetic illite increase, the available sites on magnetic illite surfaces increase providing more sorption sites to adsorb U(VI) [8,28]. Similar results were reported by Xu et al [29] and Zhang et al [30].…”

Section: Effect Of Solid-to-liquid Ratiosupporting

confidence: 85%

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Yin

et al. 2015

J Radioanal Nucl Chem

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The sorption of U(VI) on magnetic illite as a function of pH, ionic strength, solid-to-liquid ratio, shaking time, humic acid (HA) and temperature was investigated through batch experiments. The results showed that the sorption process had a strong dependent on the changes of pH, temperature and HA in solution. And at below pH 6.5, with decreasing of the valences of anions such as Cl -, SO 2À 4 and PO 3À 4 ; the sorption amount increased obviously, but that was almost not influenced by cations. This experiment could provide some data base for the studies of actinide elements migration in geological media.

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Section: Effect Of Solid-to-liquid Ratiosupporting

confidence: 85%

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Yin

et al. 2015

J Radioanal Nucl Chem

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“…Adsorption isotherms reflect the soil adsorption capacity of pollutants, from which transport law of pollutants in soil can be understood [14]. From the fitting results, phenol adsorption by the two types of soil around the subway coincided with both adsorption isotherm models, but the linear model has a higher correlation coefficient, and all correlation coefficients were greater than 0.…”

Section: Adsorption Isothermsmentioning

confidence: 92%

Adsorption and Desorption Behavior of Chemical Residues in Soils

Han¹,

Tang²,

Wang³

et al. 2017

dteees

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Abstract. In order to prevent the influence of residual volatile organics from chemical plant on metro environment and population health, phenol was selected as a typical intermediate. And the adsorption and desorption of phenol in the surrounding soil of subway were investigated, which benefit for understanding pollutants transportation law and truncation of pollutants transportation. Adsorptive dynamics, adsorption-desorption behavior of phenol in soil, and the effect of different factors on adsorptive behavior were studied. The results showed that the linear adsorption equation can better meet the adsorption behavior of phenol in soil. When the equilibrium concentration was 85 mg L -1 , the adsorption amount of no. 1 and no. 2 soils were 15.7 mg g -1 and 17.2 mg g -1 respectiely. And the adsorption of phenol in soils was dependent on pH and temperature. Desorption 4 h can basically achieve desorption balance, the desorption efficiency of no. 1 and no. 2 soils were 14 % and 10 % respectively. Because there is less humus in the deep soil, desorption of phenol in deep soils was weak, which maybe reduce the transportation speed of phenol in soils.

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“…The adsorption isotherms [22] of nZVI/AC were analyzed with the Langmuir and Freundlich adsorption isotherm equations, the linear expressions are as follows:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Removal of uranium(VI) from aqueous solution using nanoscale zero-valent iron supported on activated charcoal

Liu

Wang

et al. 2016

J Radioanal Nucl Chem

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The nanoscale zero-valent iron supported on activated charcoal (nZVI/AC) by the reduction of ferrous sulfate heptahydrate with sodium borohydride was synthesized for uranium(VI) adsorption. The nZVI/AC was characterized using X-ray radiation diffraction and scanning electron microscope. The adsorption kinetics, adsorption isotherms and adsorption thermodynamics were also examined. The adsorption capacity reached 492.6 mg/ g when dosage was 0.5 g/L, initial concentration of uranium(VI) was 250 mg/L, pH was 5, temperature was 35°C and time was 60 min. The experimental results indicated that nZVI/AC possessed many advantages such as simple and economy for preparation, less adsorbent dosage, short balance time, high adsorption ratio and adsorption capacity. The synthesized adsorbent is promising to efficiently treat the uranium-contained wastewater.

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Adsorption and desorption of uranium (VI) in aerated zone soil

Cited by 40 publications

References 25 publications

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Sorption of U(VI) on magnetic illite: effects of pH, ions, humic substances and temperature

Adsorption and Desorption Behavior of Chemical Residues in Soils

Removal of uranium(VI) from aqueous solution using nanoscale zero-valent iron supported on activated charcoal

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