نتایج جستجو برای: combined adsorption

تعداد نتایج: 429519  

Journal: :Water research 2004
C-F Chiung-Fen Chang C-Y Ching-Yuan Chang Wolfgang Höll Markus Ulmer Y-H Yi-Hung Chen H-J Hans-Jügen Gross

The adsorption equilibrium and kinetics of polyethylene glycol (PEG) in three aqueous systems were examined in this study. Langmuir isotherm was used to satisfactorily predict the adsorption capacity of PEG on activated carbon F-400 and applied to the investigation of adsorption kinetics. The surface diffusion, pore diffusion, and branched pore kinetics models successfully described the adsorpt...

Journal: :Environmental science and pollution research international 2013
Olushola S Ayanda Olalekan S Fatoki Folahan A Adekola Bhekumusa J Ximba

The removal of triphenyltin chloride from contaminated simulated seawater with adsorption method was discussed. The adsorbents used are fly ash, nSiO2, and nSiO2/fly ash composite. The results showed that the adsorption of the adsorbents increases with increase in the adsorbent dose, contact time, pH, stirring speed, initial TPT concentration, and decreased with increase in temperature. The ads...

2013
Jian Bao You Fu Zhihao Bao

A thiol-functionalized magnetite/graphene oxide (MGO) hybrid as an adsorbent of Hg2+ was successfully synthesized by a two-step reaction. It exhibited a higher adsorption capacity compared to the bare graphene oxide and MGO due to the combined adsorption of thiol groups and magnetite nanocrystals. Its capacity reached 289.9 mg g-1 in a solution with an initial Hg2+ concentration of 100 mg l-1. ...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2011
Zongbi Bao Sufian Alnemrat Liang Yu Igor Vasiliev Qilong Ren Xiuyang Lu Shuguang Deng

Separation of olefin/paraffin is an energy-intensive and difficult separation process in petrochemical industry. Energy-efficient adsorption process is considered as a promising alternative to the traditional cryogenic distillation for separating olefin/paraffin mixtures. In this work, we explored the feasibility of adsorptive separation of olefin/paraffin mixtures using a magnesium-based metal...

2017
Weixin Liang Huawen Hu Pengran Guo Yanfang Ma Peiying Li Wenrou Zheng Min Zhang

Malachite green (MG) is currently posing a carcinogenic threat to the safety of human lives; therefore, it is highly desirable to develop an effective method for fast trace detection of MG. Herein, for the first time, this paper presents a systematic study on polymer microspheres, being prepared by combined Pickering emulsion polymerization and molecular imprinting, to detect and purify MG. The...

A. RONAGHI N. KARIMIAN S. SAFARZADEH

Cadmium (Cd) concentration in soil solution and its bioavailability is controlled by sorption-desorption reactions. The objective of this research was to compare Cd adsorption behavior in six calcareous and four acid soils. Soil samples were equilibrated with 0.01 M Ca(NO3)2 containing 25 to 3200 mg Cd L−1. Results showed that the tendency for adsorption was high at low Cd concentrations (0-400...

Journal: :Journal of colloid and interface science 2009
Evert J Elzinga Yuanzhi Tang Jason McDonald Stephanie DeSisto Richard J Reeder

The interaction of selenate, selenite, and chromate with the hydrated surface of gamma-Al(2)O(3) was studied using a combination of macroscopic pH edge data, electrophoretic mobility measurements, and X-ray absorption spectroscopic analyses. The pH edge data show generally increased oxyanion adsorption with decreasing pH, and indicate ionic strength-(in)dependent adsorption of chromate and sele...

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