Dynamic separation and recovery of osmium using γ-nano-Al2O3 in a packed column adsorption system

2015 ◽  
Vol 42 (3) ◽  
pp. 2691-2705
Author(s):  
Lijun Yang ◽  
Lian He ◽  
Xiaojun Chu ◽  
Fang Wang ◽  
Lei Zhang
Keyword(s):  
Packed Column ◽  
Adsorption System ◽  
Column Adsorption

scholarly journals DE Fluoridation of Domestic Waste Water by using Activated Diatomaceous Earth in fixed Mattress Column Adsorption System

2021 ◽  
Vol 37 (3) ◽  
pp. 594-601
Author(s):  
Pawan. Kumar ◽  
Pankaj. Gupta
Keyword(s):  
Waste Water ◽  
Diatomaceous Earth ◽  
Bet Surface Area ◽  
Particle Sizes ◽  
Adsorption System ◽  
Domestic Waste ◽  
Fluoride Ions ◽  
Column Adsorption ◽  
Xrf Scanning ◽  
Langmuir And Freundlich Equations

Study aims to eliminate fluoride from treated waste water or ground water through adsorption technique by using Activated Diatomaceous Earth as a sorbent. Study found that there is no change in pH and TDS, but the concentration of Fluoride ions reduced. The most elimination potential of 71.97 mg/kg turned into achieved for activated diatomaceous earth with particle sizes of 0.075-0.425 mm. The absorbance capability of diatomaceous earth (DE) is 20.73% when used as a filtration media. In this analysis, activated diatomaceous earth was used as an adsorbent in a fixed-mattress column adsorption system for DE fluoridation of water. The XRD, BET surface area, FTIR, XRF, Scanning Electron Microscopy (SEM), and pH Point of Zero Charges (pHPZC) evaluation had been executed for adsorbent to explain the mechanisms of absorption and fluoride elimination. The Bradley equation was used to calculate the isothermal data and adsorbent dose. The statistical analyses were performed using Langmuir and Freundlich equations.

Comparison of a single grain activated carbon and column adsorption system

Carbon ◽  
2002 ◽  
Vol 40 (15) ◽  
pp. 2921-2930 ◽  
Author(s):  
Hung-Lung Chiang ◽  
Jiun-Horng Tsai ◽  
Gen-Mu Chang ◽  
Yi-Chun Hsu
Keyword(s):  
Activated Carbon ◽  
Adsorption System ◽  
Column Adsorption ◽  
Single Grain

scholarly journals Adsorption of Co2+ from Aqueous Solution Using G Low Cost Adsorbent

2020 ◽  
pp. 6-10
Author(s):  
Gharde B. D. ◽  
Gharde A. D.
Keyword(s):  
Heavy Metals ◽  
Metal Ions ◽  
Low Cost ◽  
Packed Column ◽  
Mining Operation ◽  
Tree Bark ◽  
Small Scale ◽  
Batch Adsorption ◽  
Adsorption Studies ◽  
Column Adsorption

Concentration of water supplies with metals is constant area of concern naturally an international. The challenge to remediate hazardous metals containing waste stream from present formal mining operation, industrial sites and ground water is immersed. Adsorption has proved to be an accelerate way to treat industrial waste effluents. The heavy metals renders the water unsuitable for drinking and also higher toxic to human being. Removal of these material is therefore essential. The studies pertaining to the use of inexpensive agro based adsorbents, such as tree bark, saw dust, Corn cob, straw and fly ashes for heavy metals ions has been investigated using Mangifeara indica substrate through batch adsorption studies. Result obtained are quite encouraging, batch adsorption studies have shown that removal of metal ions is dependent upon process parameters like contact time, temperature, metal ions concentration, dosage and pH. The maximum removal of Co2+ to the extent of has been achieved at pH 4 to 6 in 30 min in the concentration range 30 to 90 mg/liter. The use of packed column adsorption has been investigated at the optimum condition, to study the feasibility of the process s for application in small scale industries.

scholarly journals Comparison of CO2 Separation Efficiency from Flue Gases Based on Commonly Used Methods and Materials

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 460
Author(s):  
Zenon Ziobrowski ◽  
Adam Rotkegel
Keyword(s):  
Membrane Separation ◽  
Separation Efficiency ◽  
Activated Carbons ◽  
Packed Column ◽  
Ceramic Membranes ◽  
Flue Gases ◽  
Co2 Removal ◽  
Experimental Conditions ◽  
Column Adsorption ◽  
Supported Ionic Liquid Membranes

The comparison study of CO2 removal efficiency from flue gases at low pressures and temperatures is presented, based on commonly used methods and materials. Our own experimental results were compared and analyzed for different methods of CO2 removal from flue gases: absorption in a packed column, adsorption in a packed column and membrane separation on polymeric and ceramic membranes, as well as on the developed supported ionic liquid membranes (SILMs). The efficiency and competitiveness comparison of the investigated methods showed that SILMs obtained by coating of the polydimethylsiloxane (PDMS) membrane with 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]) exhibit a high ideal CO2/N2 selectivity of 152, permeability of 2400 barrer and long term stability. Inexpensive and selective SILMs were prepared applying commercial membranes. Under similar experimental conditions, the absorption in aqueous Monoethanolamine (MEA) solutions is much faster than in ionic liquids (ILs), but gas and liquid flow rates in packed column sprayed with IL are limited due to the much higher viscosity and lower diffusion coefficient of IL. For CO2 adsorption on activated carbons impregnated with amine or IL, only a small improvement in the adsorption properties was achieved. The experimental research was compared with the literature data to find a feasible solution based on commercially available methods and materials.

Dynamic Desulfurization Process over Porous Zn–Cu-Based Materials in a Packed Column: Adsorption Kinetics and Breakthrough Modeling

2020 ◽  
Vol 34 (12) ◽  
pp. 16552-16559
Author(s):  
Shuoyang Liang ◽  
Rui Li ◽  
Bin Xia ◽  
Min Guo ◽  
Fangqin Cheng ◽  
...  
Keyword(s):  
Adsorption Kinetics ◽  
Packed Column ◽  
Column Adsorption ◽  
Desulfurization Process
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