Removal of Etyhl Orange Dye using Waste Eggshell

2013 ◽  
Vol 64 (1) ◽  
Author(s):  
Norzita Ngadi ◽  
Wan Nur Shahida Wan Jusoh
Keyword(s):  
Dye Removal ◽  
Adsorption Process ◽  
Low Cost ◽  
Ph Effect ◽  
Freundlich Isotherm ◽  
Raw Material ◽  
Thermal Gravimetric ◽  
Acidic Solutions ◽  
Thermal Gravimetric Analyzer ◽  
Calcined Temperature

In this study, waste eggshells were used as a low cost raw material to remove ethyl orange dye in aqueous solution. The waste eggshells were calcined at temperatures of 600, 700, 800 and 900°C in the furnace for 2 h. Further, the calcined waste eggshells were treated chemically using 2 M of potassium carbonate. The calcined waste eggshells were characterized using Thermal Gravimetric Analyzer (TGA). The surface morphology of the calcined and uncalcined (i.e. natural) waste eggshell was obtained using Scanning electron microscope (SEM). The dye concentration was determined using UV-Vis spectrometry at wavelength of 474 nm. The results obtained showed that the percentage of dye removal using natural waste eggshell was 47.1%. For the calcined waste eggshell, the removal of dye decreased as the calcined temperature increased. For the pH effect, the acidic solutions give the highest percentage of dye removal which is 54 %. As expected, the higher the dose of waste eggshell used, the higher the dye removed. The highest removal of dye was obtained by using 2.0g of waste eggshell which is 48.2%. For the temperature effect, the adsorption of dye decreased as the temperature increased. The highest removal of dye was achieved at 50°C which is 63.0%. In this study, the adsorption process was found to fit the Freundlich isotherm than of the Langmuir isotherm. 

scholarly journals Removal of Cadmium(II) from Water using Modified Citrus limettioides Peels: Thermodynamic and Isotherm Studies

2019 ◽  
Vol 32 (1) ◽  
pp. 73-78
Author(s):  
P. Janaki ◽  
R. Sudha ◽  
T.S. Sribharathi ◽  
P. Anitha ◽  
K. Poornima ◽  
...  
Keyword(s):  
Adsorption Process ◽  
Low Cost ◽  
Raw Material ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Adsorption Method ◽  
Chemically Modified ◽  
Adsorption Performance ◽  
Monolayer Adsorption ◽  
Isotherm Equations

The adsorption performance of sulphuric acid treated low cost adsorbent synthesized by using Citrus limettioides peel as an effective raw material for the removal of cadmium(II) from water. The batch adsorption method was carried out to optimize some parameters like contact time, pH and adsorbent dose. The nonlinear isotherm equations were used to calculate the different isotherm constant of five isotherm models namely Freundlich, Langmuir, Dubinin-Radushkevich, Redlich-Peterson and Sips. The Langmuir monolayer adsorption capacity of chemically modified Citrus limettioides peel was found to be 287.60 mg g-1. The negative values of ΔGº and ΔHº showed that the adsorption process is spontaneous and exothermic.

scholarly journals Removal of lead from aqueous solutions by low cost and waste biosorbents (lemon, bean and artichoke shells)

2020 ◽  
Vol 81 (1) ◽  
pp. 159-169
Author(s):  
Feyza Ergüvenerler ◽  
Şerif Targan ◽  
Vedia Nüket Tirtom
Keyword(s):  
Contact Time ◽  
Adsorption Process ◽  
Low Cost ◽  
Standard Free Energy ◽  
Freundlich Isotherm ◽  
Standard Entropy ◽  
X Ray ◽  
Adsorption Capacities ◽  
Influence Of Ph ◽  
Scanning Electron

Abstract Simple, fast, effective, low cost and waste biosorbents, lemon, bean and artichoke shells, were used to remove lead (II) ions from aqueous solution. The influence of pH, contact time, temperature and lead (II) concentration of the removal process was investigated. The sufficient contact time was deemed 10 minutes for bean and artichoke shells and 60 minutes for lemon shells for Pb(II) ions. The thermodynamic parameters, such as standard free energy (ΔG), standard enthalpy (ΔH), and standard entropy (ΔS) of the adsorption process were calculated as −5.6786, −5.5758, −3.1488 kJmol−1 for ΔG, −7.2791, −20.285, −9.5561 kJ mol−1 for ΔH, −0.00545, −0.05017, −0.02185 kJ mol−1 K−1 for ΔS, respectively, for lemon, artichoke and bean shells. Maximum adsorption capacities of lead (II) were observed as 61.30 mg g−1, 88.5 mg g−1 and 62.81 mg g−1, respectively, for lemon, bean and artichoke shells according to the Freundlich isotherm model at 20 °C. Scanning electron microscope (SEM) and energy-dispersive X-ray detector (EDX) were used to characterize the surface morphology of the adsorbents. Consequently, Pb(II) removal using lemon, bean and artichoke shells would be an effective method for the economic treatment of wastewater.

scholarly journals Removal of triphenylmethane dye from aqueous solutions through an adsorption process over waste materials

2020 ◽  
Vol 10 (4) ◽  
pp. 5772-5779
Keyword(s):  
Adsorption Isotherm ◽  
Adsorption Capacity ◽  
Dye Removal ◽  
Functional Group ◽  
Adsorption Process ◽  
Removal Rate ◽  
Freundlich Isotherm ◽  
Second Order ◽  
Pseudo Second Order ◽  
Best Fit

Water pollution is the most significant issue due to rapid growing industrial development especially textile dye industry. Therefore, the adsorption process experiment was conducted to determine the removal ability of the adsorbent chosen. The removal rate and adsorption capacity of Phenol red and Cresol were analyzed by using eggshell adsorbent in the adsorption process. The experiment was conducted with parameters of initial concentration, dosage, pH and contact time. Results indicated that the removal rate achieved more than 90% and the adsorption capacity exceeded more than 5 mg/g. The functional group before adsorption process eggshell adsorbent and after adsorption process eggshell adsorbent was analyzed by using FTIR (Fourier Transform Infrared Spectroscopy). The study of adsorption isotherm and kinetics model was carried out to identify the efficiency of the eggshell adsorbent reacting with the dye solution. The adsorption isotherm that applied in this research was Langmuir isotherm, Jovanovic isotherm and Freundlich isotherm. Moreover, Pseudo-first-order and Pseudo-second-order chosen were conducted to determine the kinetic studies. In short, eggshell adsorbent is highly effective on dye removal through adsorption capacity. The functional group of the eggshell adsorbent was found such as alcohols, phenol, alkanes, carbonyls, ester, saturated aliphatic, aldehydes, aromatics, 2°amines and phosphorus. For kinetics study, Freundlich isotherm was analyzed as the best fit isotherm model as it achieved the highest R2 value which is closed to 1 and Pseudo-second-order was analyzed as the best fit kinetic model in this experiment. Therefore, eggshell adsorbent is highly effective in dye removal.

Adsorption of Cadmium(II) Ion from Aqueous Solution onto a Raw Material of Bamboo Powder and its Surface Modification

2018 ◽  
Vol 879 ◽  
pp. 131-136 ◽  
Author(s):  
Woravith Chansuvarn ◽  
Yuttapoom Pandee ◽  
Ariya Saechim ◽  
Kritsana Habunmee
Keyword(s):  
Adsorption Capacity ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Raw Material ◽  
Wastewater Sample ◽  
Adsorption Parameters ◽  
Freundlich Isotherms ◽  
Monolayer Adsorption ◽  
Adsorptive Behavior ◽  
Bamboo Powder

This work was focused on evaluating the potential of bamboo powder modified with manganese oxide (MnO-BP) as a low-cost byproduct adsorbent for the adsorption of cadmium(II) ion. A batch method was carried out at room temperature and the optimized conditions. The optimization of adsorption parameters including pH, equilibrium time, dosage and initial Cd(II) concentration was also systematically studied for the removal of cadmium(II) ion. The maximum monolayer adsorption capacity of MnO-BP was estimated as 8.57 mg/g that it more adsorption capacity than untreated-bamboo powder by about 5 times. The Langmuir and the Freundlich isotherms were used to describe the adsorptive mechanism and calculated the maximum monolayer adsorption capacity. It was found that the data from MnO-BP fitted well to the Freundlich isotherm with R2>0.99. It indicated that the adsorptive behavior of MnO-BP to cadmium(II) ion is preferable. In this work, MnO-BP was used for the removal of cadmium(II) ion in wastewater sample. The MnO-BP is a low-cost adsorbent that can be used to remove cadmium(II) effectively.

scholarly journals Microporous carbon material from fish waste for removal of methylene blue from wastewater

2020 ◽  
Vol 81 (6) ◽  
pp. 1180-1190
Author(s):  
You Wang ◽  
Qifan Peng ◽  
Naseem Akhtar ◽  
Xiaonong Chen ◽  
Yaqin Huang
Keyword(s):  
Methylene Blue ◽  
Carbon Material ◽  
Dye Removal ◽  
Adsorption Process ◽  
Low Cost ◽  
Blue Dye ◽  
Adsorption Efficiency ◽  
High Adsorption ◽  
Fish Waste ◽  
Pseudo Second Order

Abstract Microporous fish waste-based activated carbon material (MFC) was prepared, with a large surface area of 2,193.52 m²/g, a pore size of 2.67 nm and micropore and total pore volumes of 0.9168 cm³/g and 0.9975 cm³/g, respectively. Adsorption efficiency of MFC was investigated by removal of methylene blue dye from wastewater. The Langmuir model and pseudo-second-order kinetics adequately described the adsorption process. MFC exhibited a high adsorption capacity of 476.19 mg/g at 30 °C, and reached equilibrium within 1 h. MFC could be an efficient and low-cost adsorbent for cationic dye removal during wastewater treatment.

scholarly journals Utilization of a Newly Developed Nanomaterial Based on Loading of Biochar with Hematite for the Removal of Cadmium Ions from Aqueous Media

2021 ◽  
Vol 13 (4) ◽  
pp. 2191
Author(s):  
Tunzeel Iqbal ◽  
Shahid Iqbal ◽  
Fozia Batool ◽  
Dimitrios Thomas ◽  
Malik Muhammad Hassnain Iqbal
Keyword(s):  
Metal Ions ◽  
Adsorption Process ◽  
Low Cost ◽  
Aqueous Media ◽  
Freundlich Isotherm ◽  
Batch Adsorption ◽  
Type I ◽  
Process Data ◽  
Desorption Process ◽  
Saccharum Munja

In order to conserve the energy used for remediation of harmful metals from aqueous media, an adsorption process was performed. It is efficient and low-cost method with zero carbon emissions as compared to other methods. A hematite-based novel nanomaterial loaded onto biochar was utilized for the remediation of toxic cadmium metal ions from aqueous media. Saccharum munja has been employed as low-cost feedstock to prepare the biochar. Three adsorbents i.e., raw Saccharum munja (SM), Saccharum munja biochar (SMBC) and hematite-loaded Saccharum munja bichar (HLSMBC) were used in batch adsorption tests to study uptake of metal ions by optimizing the experimental parameters. Experimental data and calculated results revealed maximum sorption efficiency of Cd(II) removal was given by HLSMBC (72 ppm) and SMBC (67.73 ppm) as compared with SM (48.7 ppm). Among adsorption isotherms applied on work best fit for Cd(II) adsorption on SM was found for a Freundlich isotherm with high values of correlation coefficient R2 ≥ 0.9 for all sorbents and constant 1/n values between 0–1. Equilibrium results were evaluated using five different types of errors functions. Thermodynamic studies suggested feasible, spontaneous and endothermic nature of adsorption process, while, the ∆H parameter < 80 kJ/mol indicated physiosorption and positive ∆S values promoted randomness of ions with increase in adsorption process. Data fitted into type I of pseudo second order kinetics having R2 ≥ 0.98 and rate constants K2 (0–1). Desorption process was also performed for storage, conservation and reuse of sorbent and sorbate materials.

scholarly journals Removal of Procion Red MX- 5B from aqueous solution by adsorption on Parkia speciosa (stink bean) peel powder

2019 ◽  
Vol 10 (1) ◽  
pp. 4774-4779
Keyword(s):  
Functional Groups ◽  
Dye Removal ◽  
Adsorption Process ◽  
Freundlich Isotherm ◽  
Infrared Spectrometry ◽  
Equilibrium Studies ◽  
Azo Compound ◽  
Stretch Vibration ◽  
Pseudo Second Order ◽  
Stretching Vibrations

The potential of Parkia speciosa peel (SBP) for removal of procion red mx-5B (PR) through the adsorption process was investigated. PR is a type of azo dye which is toxic to the environment especially in water. Sustainable adsorbents such as agricultural wastes have been promising to reduce the amount of pollution in wastewater due to their accessibility and more economic. The batch study was performed to examine the influence of varies exploratory conditions by fluctuating the dosage, adsorption time, and initial concentration. The main functional groups involved in the dye removal were analysed by Fourier transform infrared spectrometry (FTIR). The isotherm data were examined by the Langmuir, Freundlich and Temkin models. The result showed the equilibrium studies were perfectly associated by the Freundlich isotherm with R2= 0.9993, 0.9786 and 0.9728 for 1, 3 and 5 g of adsorbent dosage that corresponded with pseudo-second-order at a rate constant of 1x10-3/min. The FTIR spectrum of SBP after adsorption showed that changing of the functional groups of PR was presented by the stretch vibration of amine N-H and aromatic C=C, stretching vibrations for azo compound N=N. The remarkable data attained that the stink bean peel can be used as an alternative biosorbent for the removal of organic pollutants including the textile effluent industry.

scholarly journals Synthesis of Zeolite X From Waste Basalt Powder And Its Efficient Adsorption of Uranyl Ions In Solution

2021 ◽  
Author(s):  
Yong Ai ◽  
Na Yin ◽  
Yanquan Ouyang ◽  
Yuanxin Xu ◽  
Pengfei Yang
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Adsorption Process ◽  
Raw Materials ◽  
Low Cost ◽  
Raw Material ◽  
Uranyl Ions ◽  
Zeolite X ◽  
Characteristic Functional

Abstract In order to make full use of waste as raw materials to prepare low-cost zeolite, develop green chemical industry and achieve the purpose of treating waste with waste. High-purity zeolite X was prepared by the alkaline fusion hydrothermal method (AFH) using waste basalt powder as raw material, and was used as an adsorbent to investigate the adsorption performance for uranium-containing wastewater. The structure, morphology, specific surface area, chemical composition, chemical bonds, characteristic functional groups and chemical states of surface elements of the samples were characterized by XRD, SEM, BET, EDS, FT-IR and XPS. zeolite X with high crystallinity and rich hydroxyl/carboxyl groups was successfully synthesized by the AFH method, and its specific surface area was as high as 623.4 m2·g-1. When the adsorption time (t) is 720 min, the adsorption temperature (T) is 30 ℃, the initial uranium (VI) concentration is (C0) 35 mg/L, pH is 6.0, and the adsorbent dosage (m) is 5/35 mg/mL, the equilibriu adsorption capacity of zeolite X for uranyl ions is 228.4 mg·g-1. Thermodynamic results show that the adsorption process of uranyl ions by zeolite X is spontaneous and exothermic. Freundlich isotherms and quasi-second-order models are suitable to describe the adsorption process of uranyl ions by zeolite X. XPS analysis results show that -OH and -COOH play an important role in the adsorption process. At the same time, there is ion exchange between UO22+ and zeolite during the adsorption process.

scholarly journals Characterization and application of orange peel as an adsorbent for cationic dye removal from aqueous solution

2021 ◽  
Vol 25 ◽  
pp. e16
Author(s):  
Aline Haas ◽  
Eliane Pereira dos Santos
Keyword(s):  
Methylene Blue ◽  
Dye Removal ◽  
Adsorption Process ◽  
Solid Medium ◽  
Orange Peel ◽  
Freundlich Isotherm ◽  
Adsorptive Capacity ◽  
Blue Dye ◽  
Maximum Adsorption Capacity ◽  
Methylene Blue Dye

 With the great generation of colored effluents, several methods for the removal of the color are used, being one of them the method of adsorption in solid medium. In this paper, the in natura orange peel was used as the alternative biomass for the adsorption process of methylene blue, which was characterized by moisture content, pH, apparent density, iodine number, and methylene blue index. To determine the adsorptive capacity of the methylene blue dye, pH 7 was obtained as favorable, the adsorption process showed an adsorption of 82% of the methylene blue dye and a 10 min equilibrium time, where the Freundlich isotherm presented a better adaptation to the adsorption process in orange peel, with its maximum adsorption capacity of 3.9630 mg g-1, for the methylene blue dye. 

Biosorption of Cu2+ from Aqueous Solutions Using NaOH-Modified Fir Sawdust

2013 ◽  
Vol 726-731 ◽  
pp. 1827-1832
Author(s):  
Hong Mei Deng ◽  
Yong Heng Chen ◽  
Cui Qin Wu ◽  
Xue Xia Huang ◽  
Tao Liu
Keyword(s):  
Aqueous Solutions ◽  
Adsorption Process ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Factors Affecting ◽  
Langmuir Adsorption ◽  
Adsorption Processes ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Agricultural Material

Fir sawdust, a low-cost residual agricultural material, was used as adsorbent for the removal of Cu2+from aqueous solutions. Factors affecting the adsorption behavior of Cu2+, such as pH, initial metal concentration, contact time and temperature, have been carried out. The Cu2+removal was pH-dependent, reaching a maximum at pH 5. The adsorption capacity of the fir sawdust from Langmuir adsorption isotherm was 38.6 mg/g at 25°C. The adsorption process followed pseudo-second-order kinetics. The equilibrium data fitted very well to the Freundlich isotherm. The negative ΔGovalues at various temperatures confirm that the adsorption processes are spontaneous.

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