Response Surface Methodology Approach for Optimization of Biosorption Process for Removal of Binary Metals by Immobilized Saccharomyces cerevisiae

Biosorption process is considered as economical treatment to remove metal from the aqueous solution compared to other established methods. In this study, Saccharomyces cerevisiae was used as biosorbent and subject to immobilization process which consists of ethanol treatment for the removal of binary metals, lead (II) and nickel (II) from aqueous solution. Response surface methodology (RSM) was used to optimize effective parameters condition and the interaction of two or more parameters in order to obtain high removal of the binary metals. The parameters that have been studied were initial concentration of binary metals solution (10 - 60 mg/L), biosorbent dosage (0.2 - 1.0 g), pH (pH 2 - pH 6) and contact time (30 - 360 minutes) towards lead (II) and nickel (II) ions removal. Based on analysis of variance (ANOVA), biosorbent dosage, solution pH and contact time factor were found significant for both responses. Through optimization procedure, the optimum condition for lead (II) and nickel (II) ions removal were obtained at initial concentration of 10.0 mg/L, biosorbent dosage of 1.0 g, solution pH of pH 6, and contact time of 360.00 minutes, which resulted in 95.08 % and 21.09 % removal of lead (II) and nickel (II) ions respectively.

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The Application of Response Surface Methodology for Lead Ion Removal from Aqueous Solution Using Intercalated Tartrate-Mg-Al Layered Double Hydroxides

International Journal of Chemical Engineering ◽

10.1155/2013/937675 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 3

Author(s):

Yamin Yasin ◽

Maszlin Mohamad ◽

Faujan B. H. Ahmad

Keyword(s):

Aqueous Solution ◽

Response Surface Methodology ◽

Response Surface ◽

Contact Time ◽

Lead Ions ◽

Lead Ion ◽

Central Composite Rotatable Design ◽

Solution Ph ◽

Optimization Parameters ◽

Central Composite

Layered double hydroxide intercalated with tartrate (tartrate-Mg-Al) was used as an adsorbent to remove lead ions from aqueous solutions. The effects of various optimization parameters such as contact time, solution pH, lead ion concentrations, and adsorbent dosage were investigated by the use of Response Surface Methodology (RSM). The Response Surface Methodology (RSM) based on a four-level four-variable Central Composite Rotatable Design (CCRD) was employed to evaluate the interactive effects of the various optimization parameters. The parameters were contact time (6–10 h), solution pH (1–3), adsorbent dosage (0.06–0.1 g), and lead ion concentrations (10–30 mg/L). The percentage of lead ions removal for each of the parameters studied was determined by Inductively Coupled Plasma-Optical Emission Spectrophotometer. Simultaneously by increasing contact time and amount of dosage of tartrate-Mg-Al used the percentage of lead ions removal from aqueous solution will increase; however, the percentage removal decreases with an increase in pH and concentrations of lead ions. The experimental percentage removal recorded under optimum conditions was compared well with the maximum predicted value from the RSM, which suggest that Central Composite Rotatable Design of RSM can be used to study the removal of lead from aqueous solution by the use of tartrate-Mg-Al as an adsorbent.

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Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

10.21203/rs.3.rs-731673/v1 ◽

2021 ◽

Author(s):

Siti Nor Atika Baharin ◽

Nurul Hafawati Hashim ◽

Izyan Najwa Mohd Norsham ◽

Syed Shahabuddin ◽

Kavirajaa Pandian Sambasevam

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Contact Time ◽

Oxidative Polymerization ◽

Effective Parameters ◽

X Ray Diffraction ◽

Sunlight Irradiation ◽

Initial Concentration ◽

Tungsten Disulphide ◽

Polypyrrole Composite

Abstract The present study highlights the sunlight-assisted photodegradation of methylene blue (MB) using tungsten disulphide/polypyrrole (WS2/PPy) composite as a photocatalyst. WS2/PPy was prepared via oxidative polymerization using ferric chloride (FeCl3) as an oxidant. Fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and Field Emission Scanning Electron Microscope (FESEM) measurement were used to ensure the physicochemical properties of WS2/PPy. The photocatalytic efficiencies of the photocatalysts were examined by degrading methylene blue (MB) under sunlight irradiation. The results showed that the degradation efficiency of WS2/PPy was higher than the pristine PPy Several optimizations such as effect of the concentration, contact time, photocatalyst dosage and initial concentration were investigated. The results revealed that, under optimum condition of pH 3, 100 mg photocatalyst dosage, 10 ppm MB initial concentration within 180 minutes contact time, were the most effective parameters, that produced 96.15% of sunlight-assisted photodegradation in aqueous solution of MB.

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Optimization of Methylene Blue Adsorption on Agricultural Solid Waste Using Box–Behnken Design (BBD) Combined with Response Surface Methodology (RSM) Modeling

Biointerface Research in Applied Chemistry ◽

10.33263/briac124.45674583 ◽

2021 ◽

Vol 12 (4) ◽

pp. 4567-4583

Keyword(s):

Methylene Blue ◽

Response Surface Methodology ◽

Response Surface ◽

Contact Time ◽

Organic Dyes ◽

Low Cost ◽

Sem Analysis ◽

Solution Ph ◽

Box Behnken Design ◽

Mb Adsorption

Tunics corm saffron (TCS) is a low-cost adsorbent that removes methylene blue (MB) from an aqueous solution. The TCS was characterized using FTIR and SEM analysis. The influence of MB adsorption variables such as TCS dose (0.4–2.4 g L−1), contact time (0–120 min), MB dye concentration (100–500 mg L−1) was optimized Box–Behnken design (BBD) combined with response surface methodology (RSM) modeling. All three variables among the main parameters significantly affected the removal efficiency by applying the quadratic regression analysis. The results showed that the predicted values for MB adsorption were close to the experimental values and were in good agreement. Besides, the r2 value (r2=0.970) indicates that the regression can predict response for the adsorption process in the studied range. The optimum BBD-RSM for MB removal of 89.48 % was recorded at a TCS dose of 1.78 g L−1, contact time of 56 min, MB dye concentration of 176 mg L–1 at solution pH of 5.4 temperature 21 °C. Excellent regeneration of TCS to remove MB in sixth consecutive adsorption-desorption cycles. This work highlights that TCS offers tremendous potential as a low-cost for organic dyes removal from wastewaters.

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Equilibrium, Kinetics, and Thermodynamics of the Biosorption of Zn(II) from Aqueous Solution Using Powdered Cow Hooves

ISRN Physical Chemistry ◽

10.1155/2013/865219 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 3

Author(s):

Ilesanmi Osasona ◽

Olubode O. Ajayi ◽

Albert O. Adebayo

Keyword(s):

Aqueous Solution ◽

Contact Time ◽

Kinetic Equations ◽

Mesh Size ◽

Isotherm Models ◽

Order Kinetic ◽

Solution Ph ◽

Equilibrium Studies ◽

Biosorption Process ◽

Increase With Increase

The capability of cow hoof (CH) to remove Zn(II) from aqueous solution under the influence of sorbent size, solution pH, contact time, and sorbent dosage was investigated through batch studies. Equilibrium studies were conducted at three different temperatures (298, 308, and 318 K) by contacting different concentrations of Zn(II) solution with a known weight of cow hoof. The biosorption of Zn onto cow hoof was found to increase with increase in the mass of sorbent used while the biosorption efficiency was found to decrease with increase in sorbent particle size. The optimum conditions of pH 4 and contact time of 60 minutes were required for maximum removal of Zn(II) by cow hoof (mesh size 212 µm). The equilibrium data were modelled using Langmuir, Freundlich, and Dubinin-Radushkevich (D-R) isotherm models. The data were best fitted by Langmuir model. The kinetic data were analysed using Lagergren kinetic equations and these were well fitted by the pseudo-second-order kinetic model. The thermodynamic parameters showed that the biosorption process was feasible, spontaneous, and endothermic.

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Response Surface Methodology as a Tool to Study the Removal of Amido Black Dye from Aqueous Solution using Anionic Clay Hydrotalcite

Scientific Research Journal ◽

10.24191/srj.v7i1.9424 ◽

2010 ◽

Vol 7 (1) ◽

pp. 51

Author(s):

Yamin Yasin ◽

Nur Syahirah Abdul Latif ◽

Abdul Hafiz Abdul Malik

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Contact Time ◽

Interactive Effects ◽

Optimum Conditions ◽

Solution Ph ◽

Adsorbent Dosage ◽

Anionic Clay ◽

Amido Black ◽

Optimization Parameters

Anionic clay hydrotalcite was used as an adsorbent to remove amido black dye from aqueous solutions. Response surface methodology (RSM) based on a five-level, four-variable Central Composite Rotatable Design (CCRD) was employed to evaluate the interactive effects of various optimization parameters. The parameters were contact time (6-10 hrs), solution pH (4-8), adsorbent dosage (200-600 mg) and dye concentration (50-100 mg/I). Simultaneously increasing contact time, initial concentration and amount of adsorbent dosage increased the quantity of amido black dye removed. The optimum conditions derived via RSM for the reaction were a reaction time of 8.48 hrs, a concentration of 58. 09 mg/I, an adsorbent dosage of 431. 2 4 mg/L and a solution pH of 6.27. The experimental percentage removal was 85.55 % under optimum conditions, which compares well with the maximum predicted value of 87.95 %.

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Response Surface Modeling of Basic Blue 71 Removal from Aqueous Solution by N,O-Carboxymethyl-Chitosan

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.2198 ◽

2012 ◽

Vol 550-553 ◽

pp. 2198-2204

Author(s):

Zhen Chen ◽

Qing Chun Chen ◽

Yan Li

Keyword(s):

Aqueous Solution ◽

Response Surface Methodology ◽

Response Surface ◽

Contact Time ◽

Dye Removal ◽

Surface Modeling ◽

Carboxymethyl Chitosan ◽

Response Surface Modeling ◽

Optimum Ph ◽

Central Composite

Abstract: N,O-carboxymethyl chitosans (N,O-CMC) were synthesized using water as a solvent. The structure of N,O-CMC is characterized by IR and XRD. N,O-CMC was used as adsorbent for the removal of basic blue 71 dye based on response surface methodology (RSM) from aqueous solution. A standard RSM design named central composite design (CCD) was employed for experimental design and analysis of the results. The combined effect of pH, contact time and temperature on the dye removal was studied and optimized using response surface modeling. The optimum pH, temperature and contact time for the process were found to be 8, 10 °C, 140 min, respectively, and the corresponding dye removal was 100%.

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Biosorption Processof Synthetic Textile Waste-water using Bjerkandera Agustavia Response Surface Methodology (RSM)

E3S Web of Conferences ◽

10.1051/e3sconf/20186804020 ◽

2018 ◽

Vol 68 ◽

pp. 04020

Author(s):

Ariani Dwi Astuti ◽

Khalida Muda

Keyword(s):

Response Surface Methodology ◽

Response Surface ◽

Textile Industry ◽

Contact Time ◽

Textile Wastewater ◽

Quadratic Model ◽

Biosorption Process ◽

Physico Chemical ◽

Inorganic Species ◽

Effects Of Ph

Textile industry generates large quantities of wastewater. Discharging effluent of textile industry without treatment is led to the degradation of the quality of receiving water bodies.A high color, high BOD/COD and salt (Total Dissolved Solids, TDS) load are founded in the textile wastewater. Several alternative of methods,including physico-chemical methods such as filtration, carbon activated, coagulation and chemical flocculation have been used to treat textile industry wastewater. Although these methods are effective, but they are expensive and result concentrated sludge that creates a secondary disposal problem. The passive uptake of organic and inorganic species including metals and dyes from aqueous solutions by the use of non-growing/living microbial mass or their derivatives is namely biosorption.The effects of pH, weight of biosorbent, contact time and size of biosorbent in biosorption process using Bjerkandera adusta in synthetic textile wastewater were investigated and optimized using response surface methodology (RSM). The optimum removal conditions were determined at pH 4, contact time 90 minutes, weight of biosorbent 3000 mg/L, and size of biosorbent 0.4 mm. Color removal of 53.55% was demonstrated, the experimental data and model predictions agreed well. In the optimization, R2 and 2correlation coefficients for the quadratic model was estimated quite satisfactorily as 0.988 and 0.977, respectively.

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Removal of Fluoride on Chitosan Coated Alumina (CAL) from Aqueous Solution

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.518-523.797 ◽

2012 ◽

Vol 518-523 ◽

pp. 797-800 ◽

Cited By ~ 2

Author(s):

Xuan Lin Tang ◽

Huan Zhen Zhang ◽

Shuang Zhao ◽

Shu Fen Gong

Keyword(s):

Aqueous Solution ◽

Adsorption Capacity ◽

Contact Time ◽

Adsorption Rate ◽

Fluoride Removal ◽

Batch Experiments ◽

Solution Ph ◽

Initial Concentration ◽

Adsorbent Dosage ◽

Naoh Solution

CAL beads were made by dropping wise mixture of chitosan and alumina into NaOH solution. Effects of contact time, adsorbent dosage, initial concentration and pH on fluoride removal were carried out by batch experiments. Results show that adsorption rate was relatively rapid in the first 6 h, thereafter distinctly decreased until adsorption reached the equilibrium within 48 h, at this time, adsorption capacity was up to 0.67 mg/g, which was much higher than raw chitosan (0.052 mg/g). Fluoride removal increased significantly with an increase of adsorbent dosage, however, it rose slowly when the adsorbent dosage was above 16 g/L. Adsorption capacity reduced from 0.75 mg/g to 0.64mg/g when solution pH rose from 4 to 7, nevertheless, adsorption was relatively independent on solution pH between 7 and 10.

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