scholarly journals Packed Bed Biosorption of Lead and Copper Ions Using Sugarcane Bagasse

2016 ◽  
Vol 16 (1) ◽  
pp. 23 ◽  
Author(s):  
Norwin Dale F Duga ◽  
Pauline Edrickke A Imperial ◽  
Allan N Soriano ◽  
Aileen D Nieva
Keyword(s):  
Heavy Metals ◽  
Adsorption Capacity ◽  
Sugarcane Bagasse ◽  
Flow Rate ◽  
Copper Ions ◽  
Continuous System ◽  
Packed Bed ◽  
Packed Bed Column ◽  
Varying Parameters ◽  
Bed Height

Bagasse, a waste material from sugarcane has been studied as a biosorbent for removing heavy metals, Pb2+ and Cu2+, in a continuous system using a packed bed column. This study was undertaken to determine the influence of varying the bed height and flow rate on the breakthrough and saturation time. Thomas, Adams-Bohart and Yoon-Nelson models were used to assess the effects of varying parameters and both Thomas and Yoon-Nelson models were found to be satisfactory to describe the column data obtained in the experiment. Moreover, lead ions are adsorbed more efficiently with an adsorption capacity of 4.54 mg/g compared to copper ions with 3.98 mg/g at the most feasible parameters having a flow rate of 100 mL/min and a bed height of 30 cm

Column Study for Adsorption of Methylene Blue Dye using Azadirachta indica Adsorbent

2020 ◽  
Vol 17 (4) ◽  
pp. 47-52
Author(s):  
Vibha Goswami ◽  
Renu Upadhyaya ◽  
Sumanta Kumar Meher
Keyword(s):  
Methylene Blue ◽  
Flow Rate ◽  
Azadirachta Indica ◽  
Packed Bed ◽  
Blue Dye ◽  
Feed Flow Rate ◽  
Methylene Blue Dye ◽  
Packed Bed Column ◽  
Bed Height ◽  
Percentage Removal

In this study, synthesised Azadirachta indica adsorbent was used for the removal of methylene blue dye using a packed bed column. The effect of feed flow rate, feed methylene blue dye concentration, and bed height of column on percentage removal of dye was studied. It was observed that the column bed exhausted rapidly at a higher flow rate and therefore, a breakthrough occurred faster. However, it was observed that bed exhaustion time increases on increasing the bed height from 2 to 10 inch at 10 mg/L feed dye concentration and feed flow rate of 40 ml/min. It was also found that the breakthrough curve is more dispersed and the percentage removal of dye increases on decreasing the feed methylene dye concentration from 150 to 10 mg/L. The percentage removal was found to be 96.89% at 20 ml/min of feed flow rate under 10 inch of bed height and 10 mg/L of feed dye concentration. The atomic absorption spectrophotometer and scanning electron microscope were used for estimating the effluent dye concentration from the column and morphological study, respectively.

scholarly journals Cr(VI) biosorption: Effect of temperature, particle size and bed height

2020 ◽  
pp. 78-86
Author(s):  
Candelaria Nahir Tejada-Tovar ◽  
Angel Villabona-Ortíz ◽  
Rodrigo Ortega Toro
Keyword(s):  
Particle Size ◽  
Fourier Transforms ◽  
Continuous System ◽  
Packed Bed ◽  
Effect Of Temperature ◽  
Infrared Spectrometry ◽  
Packed Bed Column ◽  
Chromium Vi ◽  
Bed Height ◽  
Vis Spectroscopy

The present work aimed to evaluate the effect of temperature, particle size and bed height of the chromium (VI) adsorption process using plantain peels in a continuous system. The experiment was carried out on a packed bed column, adjusting the feed temperature of the solution with a REX-C100 controller coupled to a type K thermocouple. The initial concentration of Cr (VI) was set at 100 ppm, the pH at 2 and the feed rate of 0.75 mL/s. The analyses were performed by UV-Vis spectroscopy using the colourimetric method of 1.5-diphenylcarbazide. The material was characterized by infrared spectrometry by Fourier Transforms (FTIR), from this analysis, it was determined that the OH and NH2 functional groups are the main responsible for the formation of complexes with the cations in solution. Also, it was established that only the particle size is statistically significant. According to the response surface analysis, the optimum conditions of the process were 353.15 K, a particle size of 0.819 mm and a bed height of 67.768 mm. From the thermodynamic study of the process, it is established that it is endothermic and the chemical adsorption prevails in it. The results obtained in the process modelling suggest that Dose-Response can be used reliably to scale the process.

scholarly journals Comparison of the adsorption capacity of acetaminophen on sugarcane bagasse and corn cob by dynamic simulation

2020 ◽  
Vol 30 (1) ◽  
Author(s):  
Diego M. Juela
Keyword(s):  
Adsorption Capacity ◽  
Dynamic Simulation ◽  
Sugarcane Bagasse ◽  
Flow Rate ◽  
Breakthrough Curves ◽  
Maximum Adsorption Capacity ◽  
Corn Cob ◽  
Initial Concentration ◽  
Bed Height ◽  
Hospital Wastewaters

Abstract Acetaminophen (ACT), an antipyretic analgesic, is one of the emerging pollutants that has been found in high concentrations in domestic and hospital wastewaters. This study compared the adsorption capacity of sugarcane bagasse (SB) and corn cob (CC) for the ACT removal through the dynamic simulation of the adsorption column using Aspen Adsorption® V10. The effects of flow rate (1.5–3.0 mL min− 1), ACT initial concentration (40–80 mg L− 1), and bed height (20–35 cm) on the breakthrough curves were studied. Finally, the simulation results were validated with experimental studies, and analyzed by error functions, sum of squared errors (SSE), absolute average deviation (AAD), and coefficient of determination (R2). Based on the predicted breakthrough curves, ACT is adsorbed in greater quantity on CC, with saturation times and adsorption capacity greater than SB in all simulations. The maximum adsorption capacity was 0.47 and 0.32 mg g− 1 for CC and SB, respectively, under condition of flow rate of 1.5 mL min− 1, bed height of 25 cm, and ACT initial concentration of 80 mg L− 1. Breakthrough and saturation times were higher when the column operated at low flow rates, large bed height, and low ACT concentrations, for both adsorbents. The predicted and experimental breakthrough curves satisfactorily coincided with R2 values greater than 0.97, SSE and AAD values ​​less than 5% and 0.2, respectively, for all studies. The experimental adsorption capacity was greater for CC than for SB, thus confirming that the software is able to predict which adsorbent may be more effective for ACT removal. The results of this study would speed up the search for effective materials to remove ACT from wastewaters.

Kinetics and Equilibrium of Radioactive Metal Adsorption onto Sugarcane Bagasse Waste: Comparison of Batch and Column Adsorption Modes

2021 ◽  
Vol 235 (3) ◽  
pp. 281-294
Author(s):  
Abida Kausar ◽  
Haq Nawaz Bhatti ◽  
Munawar Iqbal
Keyword(s):  
Sugarcane Bagasse ◽  
Flow Rate ◽  
Breakthrough Curves ◽  
Quadratic Model ◽  
Waste Biomass ◽  
Initial Concentration ◽  
Bed Height ◽  
Column Adsorption ◽  
Central Composite ◽  
Bagasse Waste

Abstract Sugarcane bagasse waste biomass (SBWB) efficacy for the adsorption of Zr(IV) was investigated in batch and column modes. The process variables i.e. pH 1–4 (A), adsorbent dosage 0.0–0.3 g (B), and Zr(IV) ions initial concentration 25–200 mg/L (C) were studied. The experiments were run under central composite design (CCD) and data was analysed by response surface methodology (RSM) methodology. The factor A, B, C, AB interaction and square factor A2, C2 affected the Zr(IV) ions adsorption onto SBWB. The quadratic model fitted well to the adsorption data with high R2 values. The effect of bed height, flow rate and Zr(IV) ions initial concentration was also studied for column mode adsorption and efficiency was evaluated by breakthrough curves as well as Bed Depth Service and Thomas models. Bed height and Zr(IV) ions initial concentration enhanced the adsorption of capacity of Zr(IV) ions, whereas flow rate reduced the column efficiency.

scholarly journals Batch and continuous fixed bed adsorption of heavy metals removal using activated charcoal from neem (Azadirachta indica) leaf powder

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Himanshu Patel
Keyword(s):  
Heavy Metals ◽  
Flow Rate ◽  
Activated Charcoal ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Column Study ◽  
Initial Concentration ◽  
Bed Height ◽  
Leaf Powder ◽  
Batch Treatment

Abstract The present investigate was intended for adsorption of heavy metals i.e. Pb, Cu, Cr, Zn, Ni and Cd onto activated charcoal prepared from neem leaf powder (AC-NLP) using batch and column studies. Batch adsorption was performed using different variables like adsorbent dose, temperature and contact duration. Thermodynamic analysis of batch treatment concluded that adsorption is thermodynamically feasible and endothermic. This adsorption followed the Pseudo second-order kinetic model derived from correlation coefficient values of chemical kinetic studies. For column study, interpretation of breakthrough curves and parameters were conducted by varying flow rate, initial concentration and bed height; and reveal that optimum conditions were lower flow rate (5 mL/min) and lower initial concentration (5 mg/L) and higher bed height (20 cm). Comparisons of batch and column study through isotherm models were evaluated and column study is more preferred than batch treatment. Maximum Thomas adsorption capacity was achieved upto 205.6, 185.8, 154.5, 133.3, 120.6, 110.9 mg/g for Pb, Cu, Cd, Zn, Ni and Cr respectively. This removal pattern is elucidated by metal ionic properties. Various adsorbing agents such as acids and bases were utilized for adsorption–desorption of AC-NLP.

Study of Dyestuff Removal from Solution by Sunflower Seed Husk

2011 ◽  
Vol 236-238 ◽  
pp. 3016-3019
Author(s):  
Siriwan Srisorrachatr
Keyword(s):  
Methylene Blue ◽  
Packed Bed ◽  
Synthetic Wastewater ◽  
Solution Temperature ◽  
Adsorption Model ◽  
Packed Bed Column ◽  
Bed Height ◽  
Optimum Ph ◽  
Seed Husk ◽  
Blue Solution

The removal of dyes from synthetic wastewater by sunflower husk was studied in batch and dynamics removal. The extent of adsorption was studied in batch as a function of burning temperature, chemical treatment, adsorbents size, pH and solution temperature. Methylene blue and Mexican red in aqueous solution was used as synthetic wastewater. Dynamic removal of methylene blue and Mexican red by sunflower husk was also studied in packed bed column. In batch, both dyes were removed with the maximum adsorption by unburned adsorbents. Removal of methylene blue was increased when the adsorbents treated with NaOH whereas treated with HCl for Mexican red. The optimum pH for removal of methylene blue solution was between 4 and 10 and the maximum value for Mexican red was pH 2. The adsorption of methylene blue and Mexican red follows Langmuir adsorption model. In packed bed column, values of column parameter were investigated as a function of flow rate and bed height. Dynamic of adsorption process was modeled by bed depth service time (BDST) and the experimental data were fitted very well to the BDST model

Continuous Heavy Metal Removal from Palm Oil Mill Effluent Using Natural Ceiba pentandra Packed-Bed Column

2014 ◽  
Vol 625 ◽  
pp. 822-825 ◽  
Author(s):  
Muhammad Afzaal ◽  
Balasubramanian Periyasamy ◽  
Mohd Azmuddin Abdullah
Keyword(s):  
Heavy Metal ◽  
Flow Rate ◽  
Palm Oil ◽  
Packing Density ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Packed Bed ◽  
Palm Oil Mill Effluent ◽  
Packed Bed Column ◽  
Palm Oil Mill

Packed bed column studies were carried out to evaluate the performance of naturalCeiba pentandra(L). Gaertn. (kapok) for the heavy metal removal from Palm Oil Mill Effluent (POME) under varying flow rate (5-10 ml/min) and packing density (0.04-0.08 g/cm3). A multilevel factorial design based on Packing density and flow rate of the influent was developed. Maximum metal reductions for Fe, Mn and Zn were 2.06 ppm, 0.081 ppm, and 0.064 ppm respectively obtained at 0.08 g/cm3packing density and 5 ml/min flow rate. The results suggest the suitability of raw kapok fiber for low-cost removal of heavy metals.

scholarly journals Calcium PretreatedHevea brasiliensisSawdust for Copper Removal: Batch and Column Study

2015 ◽  
Vol 2015 ◽  
pp. 1-9
Author(s):  
Swarup Biswas ◽  
Umesh Mishra
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Process ◽  
Copper Ion ◽  
Packed Bed ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Maximum Adsorption Capacity ◽  
Packed Bed Column ◽  
Pseudo Second Order ◽  
Kinetics Of

Calcium pretreatedHevea brasiliensissawdust has been used as an effective and efficient adsorbent for the removal of copper ion from the contaminated water. Batch experiment was conducted to check the effect of pH, initial concentration, contact time, and adsorbent dose. The results conclude that adsorption capacity of adsorbent was influenced by operating parameters. Maximum adsorption capacity found from the batch adsorption process was 37.74 mg/g at pH of 5.6. Various isotherm models like Langmuir, Freundlich, and Temkin were used to compare the theoretical and experimental data, whereas the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were applied to study the kinetics of the batch adsorption process. Dynamic studies were also conducted in packed-bed column using different bed depths and the maximum adsorption capacity of 34.29 was achieved. Characterizations of the adsorbent were done by Fourier transform infrared spectroscopy, scanning electron microscope, and energy dispersive X-ray spectroscopy.

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