scholarly journals Uptake of Cationic Dyes from Aqueous Solution by Biosorption Using Granulized AnnonasqumosaSeed

2009 ◽  
Vol 6 (4) ◽  
pp. 1260-1266 ◽  
Author(s):  
T. Santhi ◽  
S. Manonmani
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Cationic Dyes ◽  
Dye Wastewater ◽  
Experimental Conditions ◽  
Freundlich Model ◽  
First Order ◽  
Experimental Parameters ◽  
Initial Ph ◽  
Rate Kinetics

A new, low cost, locally available biomaterial was tested for its ability to remove cationic dyes from aqueous solution. A sample of granulizedAnnona squmosaseeds had been utilized as a sorbent for uptake of three cationic dyes, methylene blue (MB), methylene red (MR) and malachite green (MG). The effects of various experimental parameters (e.g., contact time, dye concentration, adsorbent dose and pH) were investigated and optimal experimental conditions were ascertained. Above the value of initial pH 5, three dyes studied could be removed effectively. The isothermal data fitted the Langmuir model in the case of MB sorption and the Freundlich model for all three dyes sorption. The biosorption processes followed the pseudo first order rate kinetics. The results in this study indicated that granulizedAnnona squmosaseed was an attractive candidate for removing cationic dyes from the dye wastewater.

scholarly journals Uptake of Cationic Dyes from Aqueous Solution by Biosorption onto GranularMuntingia calabura

2009 ◽  
Vol 6 (3) ◽  
pp. 737-742 ◽  
Author(s):  
T. Santhi ◽  
S. Manonmani ◽  
S. Ravi
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Freundlich Isotherm ◽  
Cationic Dyes ◽  
Isotherm Models ◽  
Experimental Conditions ◽  
Experimental Parameters ◽  
Initial Ph ◽  
Rate Kinetics ◽  
Muntingia Calabura

A new, low cost, locally available biomaterial was tested for its ability to remove cationic dyes from aqueous solution. A granule prepared from a mixture of leafs, fruits and twigs ofMuntingia calaburahad been utilized as a sorbent for uptake of three cationic dyes, methylene blue (MB), methylene red (MR) and malachite green (MG). The effects of various experimental parameters (e.g.,contact time, dye concentration, adsorbent dose and pH) were investigated and optimal experimental conditions were ascertained. Above the value of initial pH 6, three dyes studied could be removed effectively. The isothermal data fitted the Langmuir and Freundlich isotherm models for all three dyes sorption. The biosorption processes followed the pseudo-first order rate kinetics. The results in this study indicated thatMuntingia calaburawas an attractive candidate for removing cationic dyes from the dye wastewater.

scholarly journals Removal of Dyes from Aqueous Solution by Adsorption on Biomass of Mango (Mangifera Indica) Leaves

2010 ◽  
Vol 7 (3) ◽  
pp. 669-676 ◽  
Author(s):  
T. Murugan ◽  
A. Ganapathi ◽  
R. Valliappan
Keyword(s):  
Aqueous Solution ◽  
Mangifera Indica ◽  
Experimental Conditions ◽  
Freundlich Model ◽  
Experimental Parameters ◽  
Initial Ph ◽  
Adsorption Processes ◽  
Leaf Powder ◽  
Rate Kinetics ◽  
Mango Leaves

The potential feasibility of mango leaves powder (MLP) (Mangifera indica) for removal of dye (Grey BL) from aqueous solution was investigated. The effects of various experimental parameters were examined and optimal experimental conditions were decided. Above the value of initial pH 7, the dye studied could be removed effectively. The isothermal data fitted the Langmuir model or Freundlich model. The adsorption processes followed the pseudo-first-order rate kinetics. The results in this study indicated that mango leaf powder (MLP) was an attractive candidate for removing dye from dye wastewater.

scholarly journals Biosorption of cationic dyes by Pará chestnut husk (Bertholletia excelsa)

2018 ◽  
Vol 77 (6) ◽  
pp. 1612-1621 ◽  
Author(s):  
Jordana Georgin ◽  
Bianca Silva Marques ◽  
Enrique Chaves Peres ◽  
Daniel Allasia ◽  
Guilherme Luiz Dotto
Keyword(s):  
Industrial Waste ◽  
Low Cost ◽  
Aqueous Media ◽  
Amorphous Structure ◽  
Cationic Dyes ◽  
Order Model ◽  
Bertholletia Excelsa ◽  
Freundlich Model ◽  
First Order ◽  
Pseudo First Order

Abstract Pará chestnut husk (Bertholletia excelsa) (PCH), an agro-industrial waste largely generated in Brazil, was employed as a low-cost and efficient biosorbent to remove the cationic dyes Crystal Violet (CV) and Methylene Blue (MB) from aqueous media. PCH presented an amorphous structure containing carboxylic acids, esters, ketones and aldehydes on the surface. Non-porous and irregular particles were also observed. For both dyes, the biosorption capacity was favored under acid conditions. Equilibrium was attained within 40 min at 25 °C with a PCH dosage of 0.5 g L−1. The biosorption kinetic curves were satisfactory explained by the pseudo-first-order model. The Freundlich model was best for representing the equilibrium curves. The maximum biosorption capacities were 83.6 and 83.8 mg g−1 for CV and MB, respectively. PCH was efficient for treating a simulated textile effluent containing several dyes and chemicals, achieving a color removal of 90%. In this way, PCH can be considered as an option for treating colored effluents containing textile dyes.

Preparation of cationic waste paper and its application in poisonous dye removal

2013 ◽  
Vol 67 (11) ◽  
pp. 2560-2567 ◽  
Author(s):  
Fan Yang ◽  
Xiaojie Song ◽  
Lifeng Yan
Keyword(s):  
Low Cost ◽  
Aqueous Suspension ◽  
Order Kinetic ◽  
Acid Orange 7 ◽  
Anionic Dyes ◽  
Experimental Conditions ◽  
Adsorption Models ◽  
Acid Orange ◽  
Initial Ph ◽  
Pseudo Second Order

Cationic paper was prepared by reaction of paper with 2,3-epoxypropyltrimethylammonium chloride in aqueous suspension, and tested as low-cost adsorbent for wastewater treatment. The experimental results revealed that anionic dyes (Acid Orange 7, Acid Red 18, and Acid Blue 92) were adsorbed on the cationic paper nicely. The maximum amount of dye Acid Orange 7 adsorbed on cationic paper was 337.2 mg/g in experimental conditions. The effects of initial dye concentration, temperature, and initial pH of dye solution on adsorption capacity of cationic paper were studied. The pseudo-first-order and pseudo-second-order kinetic models were applied to describe the kinetic data. The Freundlich and Langmuir adsorption models were used to describe adsorption equilibrium. The thermodynamic data indicated that the adsorption process of dye on cationic paper occurred spontaneously.

scholarly journals Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

2020 ◽  
Vol 9 (1) ◽  
pp. 318-327
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Low Cost ◽  
Short Review ◽  
Industrial Wastes ◽  
Present Review ◽  
Wastewater Remediation ◽  
Experimental Conditions ◽  
Adsorption Capacities ◽  
Orange G

Adsorption is a widely used technique for wastewater remediation. The process is effective and economical for the removal of various pollutants from wastewater, including dyes. Moreover, Besides commercial activated carbon, different low-cost materials such as agricultural and industrial wastes are now used as adsorbents. The present review focused on the removal of a teratogenic and carcinogenic dye, orange G (OG) via adsorption using several adsorbents, together with the experimental conditions and their adsorption capacities. Based on the information compiled, various adsorbents have shown promising potential for OG removal.

scholarly journals Adsorption of Cr(VI), Pb(II) Ions and Methylene Blue Dye from Aqueous Solution using Pristine and Modified Coral Limestone

2020 ◽  
Vol 32 (10) ◽  
pp. 2624-2632
Author(s):  
C.S. Nkutha ◽  
N.D. Shooto ◽  
E.B. Naidoo
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Freundlich Isotherm ◽  
Blue Dye ◽  
Methylene Blue Dye ◽  
Sorption Behaviour ◽  
Freundlich Model ◽  
Experimental Parameters ◽  
Acid And Base ◽  
Modified Adsorbents

This work reports the feasibility of using pristine and chemically modified coral limestones by acid and base. Their potential adsorptive capabilities is probed by treatment of toxic Cr(VI), Pb(II) ions and methylene blue in aqueous solution under different experimental parameters by batch method. Parameters such as agitation time, concentration, temperature and pH were varied to understand the sorption behaviour of the adsorbents in each case. The adsorbents were characterized by SEM, XRD and FTIR. Morphological analysis by SEM micrographs show that the surface of all adsorbents was irregular in nature. XRD spectra confirmed the orthorhombic structure of aragonite in the pristine coral limestones (PCL), acid modified coral limestones (ACL) and base modified coral limestones (BCL). FTIR results affirmed the presence of (CO3 2-) and (-C=O) groups of the carbonate ions and Ca-O attachment to the surface of PCL and removal of CaCO3 characteristic peaks in ACL and BCL. However, in the modified adsorbents shifting of Ca-O peaks occurred. The recorded maximum adsorption capacities of PCL, ACL and BCL for Cr(VI) ions were 69.42, 65.04, 64.88 mg/g, Pb(II) ions 39.36, 74.11, 78.34 mg/g and methylene blue 37.24, 46.28, 46.39 mg/g, respectively. The uptake of Pb(II), Cr(VI) ions, methylene blue onto PCL fitted Freundlich model. Also the uptake of Cr(VI) ions and methylene blue onto ACL and BCL fitted Freundlich isotherm. However, uptake of Pb(II) ions onto both ACL and BCL fitted Langmuir isotherm. The data revealed that the adsorption of Pb(II) ions onto PCL and ACL and methylene blue dye onto PCL was exothermic. Whilst the adsorption of Cr(VI) ions onto PCL, ACL and BCL and methylene blue dye onto ACL and BCL were endothermic in nature, hence increasing the temperature would enhance the uptake of Pb(II) ions onto BCL, Cr(VI) ions onto ACL and BCL and methylene blue onto ACL and BCL. The obtained (ΔGº) values at all studied temperatures for the adsorption of Pb(II), Cr(VI) ions and methylene blue onto PLC, ACL and BCL indicated a spontaneous process.

The Kinetics Studies for the Adsorption of Furadan from Aqueous Solution by Orange Peel

2013 ◽  
Vol 842 ◽  
pp. 187-191
Author(s):  
Guang Fu Xu ◽  
Zhao Xi Shen ◽  
Rui Xin Guo
Keyword(s):  
Aqueous Solution ◽  
Low Cost ◽  
Agricultural Waste ◽  
Correlation Coefficients ◽  
Orange Peel ◽  
Intraparticle Diffusion ◽  
Time Range ◽  
Intraparticle Diffusion Model ◽  
First Order ◽  
Pseudo First Order

As an agricultural waste available in large quantity in China, Orange peel was utilized as low-cost adsorbent to remove furadan from aqueous solution by adsorption. Pseudo-first-order, second-order models and intraparticle diffusion model were applied to analyze experimental data and thus elucidated the kinetic adsorption process. The high values of correlation coefficients showed the data conformed well to the pseudo-first-order rate kinetic model over the initial stage of the adsorption processes. The plots were not linear over the whole time range, implying that more than one process affected the adsorption: the first one representing surface adsorption at the beginning of the reaction and the second one was the intraparticle diffusion at the end of the reaction. The results in this study indicated that orange peel was an attractive candidate for removing furadan from the aqueous solution.

scholarly journals Biosorption of Cr(III) from aqueous solution using an agricultural by-product jute stick powder: Equilibrium and kinetic studies

2018 ◽  
Vol 9 (3) ◽  
pp. 202-212 ◽  
Author(s):  
Mohammad Nasir Uddin ◽  
Jahangir Alam ◽  
Syeda Rahimon Naher
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Metal Ion ◽  
Water Solution ◽  
Low Cost ◽  
Isotherm Models ◽  
Infrared Spectrometry ◽  
Order Kinetic ◽  
Adsorption Model ◽  
Experimental Conditions

The adsorption capacity of chromium(III) from synthetic waste water solution by a low cost biomaterial, Jute Stick Powder (JSP)was examined. A series of batch experiments were conducted at different pH values, adsorbent dosage and initial chromium concentration to investigate the effects of these experimental conditions. To analyze the metal adsorption on to the JSP, most common adsorption isotherm models were applied. To study the reaction rate, the kinetic and diffusion models were also applied. The morphological structure and variation of functional groups in the JSP before and after adsorption was examined by scanning electron microscope (SEM) and Fourier transform infrared spectrometry (FT-IR). Maximum chromium removal capacities of JSP was 84.34%with corresponding equilibrium uptake 8.4 mg/g from 50 mg/L of synthetic metal solution in 60 minutes of contact time at pH = 6.0 and 28 °C with continuous stirring at 180 rpm. The percent sorption of the biomass decreased with increasing concentration of metal ion but increased with decreasing pH, increasing contact time and adsorbent doses. Data for this study indicated a good correspondence with both isotherms of Langmuir and Freundlich isotherm. The analysis of kinetic indicated that Chromium was consistent with the second-order kinetic adsorption model. The rate of removal of Cr(III) ions from aqueous solution by JSP was found rapid initially within 5-30 minutes and reached in equilibrium in about 40 minutes. The investigation revealed that JSP, a low cost agricultural byproduct, was a potential adsorbent for removal of heavy metal ions from aqueous solution.

scholarly journals Application of Factorial Design for the Optimization of Hexavalent Chromium Removal Using a New Low-cost Adsorbent: Adsorption Isotherms, Thermodynamic and Kinetic Studies

2021 ◽  
Vol 12 (1) ◽  
pp. 1247-1262
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Experimental Design ◽  
Hexavalent Chromium ◽  
Low Cost ◽  
Research Work ◽  
Kinetic Studies ◽  
Factorial Experimental Design ◽  
Initial Ph ◽  
Adsorbent Dose

This research work involved using factorial experimental design techniques to investigate the adsorption of hexavalent chromium from an aqueous solution on medlar activated carbon. A 24 full factorial experimental design was employed to determine the optimum values and degree of importance of parameters: pH, initial Cr (VI) concentration, adsorbent dose, and contact time at two levels. The optimized conditions for hexavalent chromium Cr (VI) removal were at initial pH 1.5, 5 mg.L−1Cr (VI), adsorbent dose 6 mg, and 60 min adsorption time. The results predicted a good agreement between the predicted values (R2= 0.9909), as obtained by the model, and the experimental value (R2= 0.9977). The main effects and interaction effects were analyzed using analysis of variance (ANOVA), F-test and P-values to define the most important process variables affecting Cr (VI) adsorption. The most significant variables were therefore the pH of the solution and the adsorbent dose. Therefore, the present results demonstrate that medlar activated carbon should be regarded as a low-cost alternative for removing Cr (VI) from an aqueous solution. The adsorption data were evaluated by Langmuir, Freundlich, and Dubinin-Radushkevich isotherms. The results showed that the Langmuir isotherm model best describes the equilibrium adsorption with a high correlation coefficient.

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