Waste Fungal Biomass for Mercury Biosorption – Column Studies

2007 ◽  
Vol 20-21 ◽  
pp. 623-626
Author(s):  
Lenka Svecova ◽  
Martin Kubal ◽  
Eric Guibal
Keyword(s):  
Fungal Biomass ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Inert Material ◽  
Column Experiments ◽  
Batch Experiments ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Bed Height

Granulated Tolypocladium biomass (industrial waste) was tested as mercury biosorbent in continuous mode (fixed bed column). Supplied material contained approx. 70% of fungal biomass and 30% of inert material (diatomaceous earth). Prior to column experiments, batch sorption was also performed. The results of batch experiments were compared to our previous results obtained for powdered biomass (100% biomass material) and an important drop of sorption capacity was observed. For column experiments, the bed height and flow rate were kept constant and the influence of both initial mercury concentration and bead size was investigated. The Adams Bohart, the Thomas and the Yoon and Nelson models were used for the characterization of breakthrough curves.

scholarly journals Fixed-Bed Column Studies for the Removal of Congo Red Using Simmondsia chinesis (Jojoba) and Coated with Chitosan

2018 ◽  
Vol 18 (2) ◽  
pp. 294 ◽  
Author(s):  
Amina Abdel Meguid Attia ◽  
Mona Abdel Hamid Shouman ◽  
Soheir Abdel Atty Khedr ◽  
Nevin Ahmed Hassan
Keyword(s):  
Flow Rate ◽  
Congo Red ◽  
Dye Removal ◽  
Fixed Bed ◽  
Great Influence ◽  
Breakthrough Curves ◽  
Fundamental Aspect ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Bed Height

The goal of this article describes the potential of utilizing jojoba leaves and also modified with chitosan as an efficient adsorption materials for Congo red dye removal in a fixed-bed column. Inlet dye concentration, feed flow rate and bed height had a great influence on determining the breakthrough curves. The percentage dye removal was found to be approximately 69% of coated jojoba leaves with flow rate 3 mL/min, initial concentration 50 mg/L and 4 cm bed height. The dye uptake capacity at equilibrium (qe) for coated jojoba leaves showed higher values than that found for jojoba leaves. On this basis, this implies that the amino groups played an important role during the adsorption process. Breakthrough curves were satisfactorily in good agreement with both Thomas and Yoon-Nelson models based on the values of correlation coefficient (R2 ≥ 96).This study serves as a good fundamental aspect of wastewater purification on jojoba leaves as a novel adsorbent for the uptake of Congo red dyes from aqueous solution in a column system.

Fixed-Bed Adsorption Column Studies for the Removal of Methyl Orange from Water Using Polyethyleneimine-Graphene Oxide Polymer Nanocomposite Beads

2021 ◽  
Vol 891 ◽  
pp. 31-36
Author(s):  
Jirah Emmanuel T. Nolasco ◽  
Camille Margaret S. Alvarillo ◽  
Joshua L. Chua ◽  
Ysabel Marie C. Gonzales ◽  
Jem Valerie D. Perez
Keyword(s):  
Graphene Oxide ◽  
Methyl Orange ◽  
Large Scale ◽  
Scale Up ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Design Parameters ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Adsorption Column

Continuous fixed-bed column studies were performed using nanocomposite beads made up of chitosan, polyethyleneimine, and graphene oxide as adsorbents for the removal of methyl orange (MO) in water. The effects of different operating parameters such as initial MO concentration (5, 10, and 15 ppm), bed height (10, 17.5, and 25 cm), and flow rate (27, 43, and 58 mL/min) were investigated using an upward-flow fixed-bed column set-up. The breakthrough curves generated were fitted with Adams-Bohart, Thomas, Yoon-Nelson, and Yan et al. models. The results showed that Yan et al. model agreed best with the breakthrough curves having an R2 as high as 0.9917. Lastly, design parameters for a large-scale adsorption column were determined via scale-up approach using the parameters obtained from column runs.

scholarly journals Sorption of Ag+ and Cu2+ by Vermiculite in a Fixed-Bed Column: Design, Process Optimization and Dynamics Investigations

2018 ◽  
Vol 8 (11) ◽  
pp. 2221 ◽  
Author(s):  
Olga Długosz ◽  
Marcin Banach
Keyword(s):  
Flow Rate ◽  
Continuous Process ◽  
Fixed Bed ◽  
Copper Ion ◽  
Cost Effective ◽  
Breakthrough Curves ◽  
Fixed Bed Column ◽  
Column System ◽  
Total Percentage ◽  
Bed Height

Vermiculite has been used for the removal of Cu 2 + and Ag + from aqueous solutions in a fixed-bed column system. The effects of initial silver and copper ion concentrations, flow rate, and bed height of the adsorbent in a fixed-bed column system were investigated. Statistical analysis confirmed that breakthrough curves depended on all three factors. The highest inlet metal cation concentration (5000 mg/dm3), the lowest bed height (3 cm) and the lowest flow rate (2 and 3 cm3/min for Ag + and Cu 2 + , respectively) were optimal for the adsorption process. The maximum total percentage of metal ions removed was 60.4% and 68.7% for Ag+ and Cu2+, respectively. Adsorption data were fitted with four fixed-bed adsorption models, namely Clark, Bohart–Adams, Yoon–Nelson and Thomas models, to predict breakthrough curves and to determine the characteristic column parameters. The adsorbent was characterized by SEM, FTIR, EDS and BET techniques. The results showed that vermiculite could be applied as a cost-effective sorbent for the removal of Cu 2 + and Ag + from wastewater in a continuous process.

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.

Fixed-Bed Column Study for the Removal of Ag(I)and Cr(III) from Aqueous Solutions Using Puffed Rice Husk

2011 ◽  
Vol 287-290 ◽  
pp. 1620-1625
Author(s):  
Yan Wu ◽  
Zai Fang Deng ◽  
Yang Tao ◽  
Xue Gang Luo
Keyword(s):  
Aqueous Solutions ◽  
Rice Husk ◽  
Flow Rate ◽  
Service Time ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Model Parameters ◽  
Column Studies ◽  
Fixed Bed Column ◽  
Puffed Rice

Fixed-bed column studies for the removal of Ag(Ⅰ) and Cr(Ⅲ) from individual aqueous solutions using puffed rice husk were investigated in this work. The experiments were conducted to study the effect of important column parameters such as bed height, feed flow rate and feed initial concentration of solution. It was found that increasing bed depth yielded longer service time while increase in influent concentration and flow rate resulted in faster breakthrough. Bed Depth Service Time (BDST) model was applied to analyze the experimental data and the model parameters were evaluated. Good agreement of the experimental breakthrough curves with the model predictions was observed.

Continuous biosorption of nickel from aqueous solution using Chrysanthemum indicum derived biochar in a fixed-bed column

2017 ◽  
Vol 76 (7) ◽  
pp. 1895-1906 ◽  
Author(s):  
Sowmya Vilvanathan ◽  
S. Shanthakumar
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Ion Concentration ◽  
Column Studies ◽  
Nickel Ion ◽  
Fixed Bed Column ◽  
Nickel Ions ◽  
Chrysanthemum Indicum

The biosorption capability of Chrysanthemum indicum to remove nickel ions from aqueous solution in a fixed-bed column was examined in this study. Native C. indicum flower waste was improved for its biosorptive potential by pyrolysis to obtain its biochar form and, thereby, both raw (CIF-R) and biochar (CIF-BC) forms of the flower were used for Ni(II) removal. Fixed bed column studies were conducted to examine the influence of bed height (1.0–3.0 cm), flow rate (1.0–5.0 mL min−1) and initial metal ion concentration (25–75 mg L−1). The breakthrough curves (Cout/Cin vs time) were modelled using different dynamic adsorption models, viz. Adams-Bohart, Thomas and Yoon-Nelson model. Interpretation of the data revealed a favorable correlation with the Thomas model with higher R2 values and closer model-predicted and experimental biosorption capacity values. The equilibrium uptake capacity of CIF-R and CIF-BC for Ni(II) were found to be 14.02 and 29.44 mg g−1, respectively. Further, the column was regenerated using HCl as eluent, to desorb the adsorbed Ni(II) ions. The experimental results implied and affirmed the suitability of the biosorbents for nickel ion biosorption with its nature being favorable, efficient, and environmentally friendly.

Biosorption of Acid Blue 5 by Biomass Derived from Eichhornia crassipes: Batch and Column Studies

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Ramamoorthy Ramasamy ◽  
Renganathan Sahadevan ◽  
Velan Manikam ◽  
Dharmendira Kumar Mahendradas ◽  
Raajenthiren Muniswamy
Keyword(s):  
Flow Rate ◽  
Eichhornia Crassipes ◽  
Breakthrough Curves ◽  
Batch Experiments ◽  
Column Studies ◽  
Solution Ph ◽  
Sorption Data ◽  
Bed Height ◽  
Equilibrium Data ◽  
Acid Blue

Biosorption of Acid Blue 5 dye by the Eichhornia crassipes was investigated in batch and column studies. Batch experiments were conducted to study the effect of initial solution pH and dye concentration. Langmuir and Freundlich sorption models were used to represent the equilibrium data. Experimental breakthrough curves in a column were obtained with bed height (5, 10 and 15 cm), flow rate (20, 25 and 30mL/min) and initial dye concentration (50, 75 and 100 mg/L). An increase in bed height and initial dye concentration favors the dye biosorption, while the minimum flow rate produced maximum dye biosorption. It was observed that the uptake of Acid Blue 5 using a bed height of 15 cm, flow rate of 20 mL/min and initial dye concentration of 100 mg/L was found to be more when compared to all other bed height, flow rate and initial dye concentration studied in the present investigation. The Bed Depth Service Time (BDST) model was used for the evaluation of continuous sorption data.

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