Removal of Pollutants from Freshwater Using Foam Biocomposites in a Fixed Bed Packed Column: Adsorption and Kinetic Study

2015 ◽  
Keyword(s):  
Kinetic Study ◽  
Packed Column ◽  
Fixed Bed ◽  
Column Adsorption

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

Analysis of Fixed-Bed Column Adsorption of Reactive Yellow 176 onto Surfactant-Modified Zeolite

2008 ◽  
Vol 47 (18) ◽  
pp. 6999-7004 ◽  
Author(s):  
Ayşegul Faki ◽  
Mustafa Turan ◽  
Ozgur Ozdemir ◽  
Abdullah Zahid Turan
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Column ◽  
Modified Zeolite ◽  
Column Adsorption

Fixed bed column adsorption of vanadium from water using amino-functional polymeric adsorbent

2021 ◽  
Vol 209 ◽  
pp. 280-288
Author(s):  
Serdar Aydın ◽  
Hamda Mowlid Nur ◽  
Abdoulaye Mamadou Traore ◽  
Eren Yıldırım ◽  
Serkan Emik
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Column ◽  
Polymeric Adsorbent ◽  
Column Adsorption

scholarly journals Biosorption of Fluoride from Synthetic and Ground Water Using Chlorella vulgaris Immobilized in Calcium Alginate Beads in an Upflow Packed Bed Column

2017 ◽  
Vol 61 (3) ◽  
pp. 188 ◽  
Author(s):  
Poornima G. Hiremath ◽  
Thomas Theodore
Keyword(s):  
Experimental Data ◽  
Ground Water ◽  
Chlorella Vulgaris ◽  
Water Samples ◽  
Packed Column ◽  
Fluoride Concentration ◽  
Fixed Bed ◽  
Fluoride Removal ◽  
Fluoride Ions ◽  
Fluoride Adsorption

The potential of immobilized Chlorella vulgaris to remove fluoride from synthetic and real ground water samples in a fixed bed was investigated. The effect of important kinetic parameters including column bed height, feed flow rate and influent fluoride concentration of solution on fluoride removal was studied. Thomas, Yoon-Nelson, and BDST models were used to analyze the experimental data and understand the influence on biosorption performance. The models’ predictions were in good agreement with the experimental data for all the process parameters studied, indicating that the models were suitable for fixed-bed column design. Fluoride adsorption was reversible. Desorption of fluoride ions was accomplished by pumping 0.1 N HCl solution. The reusability of adsorbent was studied by subjecting column to repeated cycles of fluoride adsorption and desorption. The suitability of immobilized C. vulgaris adsorbent for fluoride removal from ground water samples of Pavagada taluk, Tumakuru district was studied in the packed column.

scholarly journals Removal of Dyes from Wastewater of Artisanal Dyeing Plants by Adsorption in a Fixed Bed Column of Deactivated Lichens

2021 ◽  
pp. 1-11
Author(s):  
Kouassi Kouadio Dobi-Brice ◽  
Yacouba Zoungranan ◽  
Dje Daniel Yannick ◽  
Ekou Lynda ◽  
Ekou Tchirioua
Keyword(s):  
Ivory Coast ◽  
Fixed Bed ◽  
Batch Adsorption ◽  
Real Problem ◽  
Adsorption Method ◽  
Fixed Bed Column ◽  
Good Efficiency ◽  
Continuous Adsorption ◽  
Column Adsorption ◽  
Study Laboratory

Aims: Pollution by wastewaters from various urban activities such as artisanal dyeing plants is a real problem for developing countries. The treatment of wastewater by the adsorption method is carried out by means of less expensive and available adsorbent media. Two techniques of the adsorption method are possible: adsorption in continuous mode (column adsorption) and adsorption in discontinuous mode (batch adsorption). The choice of the continuous adsorption technique is justified by its ability to process large volumes of solutions. In this study, dyes contained in wastewater from artisanal dyeing plants were removed by continuous adsorption in a fixed-bed column of deactivated lichen biomass (Parmotrema dilatatum). Study Design: Random design Place and Duration of Study: Laboratory of Thermodynamics and Environmental Physico-Chemistry (University Nangui Abrogoua, Ivory Coast) between May 2020 and October 2020. Methodology: Four (4) categories of wastewater were collected in artisanal cotton and leather dyeing plants through two municipalities of the city of Abidjan, economic capital of Ivory Coast. Two (2) wastewaters colored in blue from dyeing of cotton boubous and jeans and two (2) wastewaters colored in red from dyeing of leather jackets and bags. These wastewaters were treated through the fixed bed column of deactivated lichens. The column feed rate was set at 0, 07 L.min-1 and the adsorbent bed mass at 100 g. Results: The study showed that, regardless of the nature of the dyed object and regardless of the target dye, the amount of dye adsorbed was better with waters of higher initial concentration. Thus the best amount of adsorbed dye is 44.444 mg.g-1 and the best removal rate is 97.9%. These values are obtained with the red wastewater of bags (RWB) treatment which was the most concentrated wastewater. Conclusion: Good efficiency of deactivated lichen bed as adsorbent for the in situ removal of dyes from wastewater by continuous adsorption.

scholarly journals Arsenic Removal from Water Using Industrial By-Products

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Branislava M. Lekić ◽  
Dana D. Marković ◽  
Vladana N. Rajaković-Ognjanović ◽  
Aleksandar R. Đukić ◽  
Ljubinka V. Rajaković
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Arsenic Removal ◽  
Fixed Bed ◽  
Steel Production ◽  
Groundwater Treatment ◽  
Maximum Sorption Capacity ◽  
Column Adsorption ◽  
Furnace Slag ◽  
By Products

In this study, removal of arsenic ions using two industrial by-products as adsorbents is represented. Removal of As(III) and As(V) from water was carried out with industrial by-products: residual from the groundwater treatment process, iron-manganese oxide coated sand (IMOCS), and blast furnace slag from steel production (BFS), both inexpensive and locally available. In addition, the BFS was modified in order to minimise its deteriorating impact on the initial water quality. Kinetic and equilibrium studies were carried out using batch and fixed-bed column adsorption techniques under the conditions that are likely to occur in real water treatment systems. To evaluate the application for real groundwater treatment, the capacities of the selected materials were further compared to those exhibited by commercial sorbents, which were examined under the same experimental conditions. IMOCS was found to be a good and inexpensive sorbent for arsenic, while BFS and modified slag showed the highest affinity towards arsenic. All examined waste materials exhibited better sorption performances for As(V). The maximum sorption capacity in the batch reactor was obtained for blast furnace slag, 4040 μgAs(V)/g.

Adsorption characteristics of methylene blue onto agricultural wastes lotus leaf in bath and column modes

2011 ◽  
Vol 64 (3) ◽  
pp. 654-660 ◽  
Author(s):  
Xiuli Han ◽  
Wei Wang ◽  
Xiaojian Ma
Keyword(s):  
Methylene Blue ◽  
Fixed Bed ◽  
Isotherm Models ◽  
Column Experiments ◽  
Fixed Bed Column ◽  
Lotus Leaf ◽  
Bed Height ◽  
Column Adsorption ◽  
Equilibrium Data ◽  
Leaf Powder

The adsorption potential of lotus leaf to remove methylene blue (MB) from aqueous solution was investigated in batch and fixed-bed column experiments. Langmuir, Freundlich, Temkin and Koble–Corrigan isotherm models were employed to discuss the adsorption behavior. The results of analysis indicated that the equilibrium data were perfectly represented by Temkin isotherm and the Langmuir saturation adsorption capacity of lotus leaf was found to be 239.6 mg g−1 at 303 K. In fixed-bed column experiments, the effects of flow rate, influent concentration and bed height on the breakthrough characteristics of adsorption were discussed. The Thomas and the bed-depth/service time (BDST) models were applied to the column experimental data to determine the characteristic parameters of the column adsorption. The two models were found to be suitable to describe the dynamic behavior of MB adsorbed onto the lotus leaf powder column.

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