Removal of Cu(II) and Ni(II) ions from an aqueous solution using α-Fe2O3 nanoparticle-coated volcanic rocks

An adsorbent, volcanic rocks coated with α-Fe2O3 nanoparticles, was prepared and utilized for the removal of Cu(II) and Ni(II) ions from an aqueous solution. Characterization of the coated volcanic rocks indicated that the α-Fe2O3 nanoparticles were successfully and homogeneously distributed on the volcanic rocks, including penetration into rock pores. Batch experiments were conducted to investigate adsorption performance. The adsorption behavior of both ions was found to best fit a pseudo second-order model and Langmuir isotherm. The maximum adsorption capacities of Cu(II) and Ni(II) ions were 58.14 mg g−1 and 56.50 mg g−1 at 293 K, respectively, and increased with rising temperature. The loaded α-Fe2O3 nanoparticles onto volcanic rock significantly increased removal of Cu(II) and Ni(II) ions. The adsorption process was combined control of film diffusion and intra-particle diffusion. Adsorption thermodynamics indicated the adsorption process was spontaneous and occurred mainly through chemisorption. The results confirmed that the volcanic rocks coated with α-Fe2O3 nanoparticles acted as a high-efficiency and low-cost absorbent, and effectively removed Cu(II) and Ni(II) from wastewater.

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Eggshell Powder as an Adsorbent for Removal of Fluoride from Aqueous Solution: Equilibrium, Kinetic and Thermodynamic Studies

E-Journal of Chemistry ◽

10.1155/2012/790401 ◽

2012 ◽

Vol 9 (3) ◽

pp. 1457-1480 ◽

Cited By ~ 47

Author(s):

R. Bhaumik ◽

N. K. Mondal ◽

B. Das ◽

P. Roy ◽

K. C. Pal ◽

...

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Fluoride Removal ◽

Contaminated Water ◽

Fluoride Adsorption ◽

Langmuir Isotherm Model ◽

Pseudo Second Order ◽

Kinetic And Thermodynamic Studies ◽

Maximum Removal

A new medium, eggshell powder has been developed for fluoride removal from aqueous solution. Fluoride adsorption was studied in a batch system where adsorption was found to be pH dependent with maximum removal efficiency at 6.0. The experimental data was more satisfactorily fitted with Langmuir isotherm model. The kinetics and the factor controlling adsorption process fully accepted by pseudo-second-order model were also discussed. Eawas found to be 45.98 kJmol-1by using Arrhenius equation, indicating chemisorption nature of fluoride onto eggshell powder. Thermodynamic study showed spontaneous nature and feasibility of the adsorption process with negative enthalpy (∆H0) value also supported the exothermic nature. Batch experiments were performed to study the applicability of the adsorbent by using fluoride contaminated water collected from affected areas. These results indicate that eggshell powder can be used as an effective, low-cost adsorbent to remove fluoride from aqueous solution as well as groundwater.

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Synthesis Fe3O4/Talc nanocomposite by coprecipition-ultrasonication method and advances in hexavalent chromium removal from aqueous solution

Adsorption Science & Technology ◽

10.1177/0263617420969112 ◽

2020 ◽

Vol 38 (9-10) ◽

pp. 483-501

Author(s):

Nguyen Thi Huong ◽

Nguyen Ngoc Son ◽

Vo Hoang Phuong ◽

Cong Tien Dung ◽

Pham Thi Mai Huong ◽

...

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Batch Experiments ◽

X Ray Diffraction ◽

Order Model ◽

X Ray ◽

Pseudo Second Order ◽

Ft Ir ◽

Langmuir And Freundlich Equations

The Fe3O4/Talc nanocomposite was synthesized by the coprecipitation-ultrasonication method. The reaction was carried out under a inert gas environment. The nanoparticles were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), fourier-transform infrared spectroscopy (FT-IR) and vibrating sample magnetometry techniques (VSM), the surface area of the nanoparticles was determined to be 77.92 m2/g by Brunauer-Emmett-Teller method (BET). The kinetic data showed that the adsorption process fitted with the pseudo-second order model. Batch experiments were carried out to determine the adsorption kinetics and mechanisms of Cr(VI) by Fe3O4/Talc nanocomposite. The adsorption process was found to be highly pH-dependent, which made the material selectively adsorb these metals from aqueous solution. The isotherms of adsorption were also studied using Langmuir and Freundlich equations in linear forms. It is found that the Langmuir equation showed better linear correlation with the experimental data than the Freundlich. The thermodynamics of Cr(VI) adsorption onto the Fe3O4/Talc nanocomposite indicated that the adsorption was exothermic. The reusability study has proven that Fe3O4/Talc nanocomposite can be employed as a low-cost and easy to separate.

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Preparation of bio-based magnetic adsorbent and application for efficient removal of Cd(II) from water

Water Science & Technology ◽

10.2166/wst.2018.007 ◽

2018 ◽

Vol 77 (5) ◽

pp. 1313-1323 ◽

Cited By ~ 1

Author(s):

Jianjun Zhou ◽

Xionghui Ji ◽

Xiaohui Zhou ◽

Jialin Ren ◽

Yaochi Liu

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Maximum Adsorption Capacity ◽

Magnetic Adsorbent ◽

Order Model ◽

Efficient Removal ◽

Adsorption Ability ◽

Adsorption Sites ◽

Pseudo Second Order

Abstract A novel magnetic bio-adsorbent (MCIA) was developed, characterized and tested for its Cd(II) removal from aqueous solution. MCIA could be easily separated from the solution after equilibrium adsorption due to its super-paramagnetic property. The functional and magnetic bio-material was an attractive adsorbent for the removal of Cd(II) from aqueous solution owing to the abundant adsorption sites, amino-group and oxygen-containing groups on the surface of Cyclosorus interruptus. The experimental results indicated that the MCIA exhibited excellent adsorption ability and the adsorption process was spontaneous and endothermic. The adsorption isotherm was consistent with the Langmuir model. The adsorption kinetic fitted the pseudo-second-order model very well. The maximum adsorption capacity of Cd(II) onto MCIA was 40.8, 49.4, 54.6 and 56.6 mg/g at 293, 303, 313 and 323 K, respectively. And the MCIA exhibited an excellent reusability and impressive regeneration. Therefore, MCIA could serve as a sustainable, efficient and low-cost magnetic adsorbent for Cd(II) removal from aqueous solution.

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Biosorption of aniline blue from aqueous solution using a novel biosorbent Zizyphus oenoplia seeds: Modeling studies

Polish Journal of Chemical Technology ◽

10.1515/pjct-2015-0052 ◽

2015 ◽

Vol 17 (3) ◽

pp. 70-77 ◽

Cited By ~ 1

Author(s):

M. Kumar ◽

G. Elangovan ◽

R. Tamilarasan ◽

G. Vijayakumar ◽

P.C. Mukeshkumar ◽

...

Keyword(s):

Aqueous Solution ◽

Low Cost ◽

Sorption Process ◽

Aniline Blue ◽

Blue Dye ◽

Batch Mode ◽

Before And After ◽

Intra Particle Diffusion ◽

Pseudo Second Order ◽

Isotherm Equations

Abstract This article presents the feasibility for the removal of Aniline Blue dye (AB dye) from aqueous solution using a low cost biosorbent material Zizyphus oenoplia seeds. In this study, a batch mode experiments of the adsorption process were carried out as a function of pH, contact time, concentration of dye, adsorbent dosage and temperature. The experimental data were fitted with Freundlich and Langmuir isotherm equations. The feasibility of the isotherm was evaluated with dimensionless separation factor (RL). The kinetic data of sorption process are evaluated by using pseudo-first order and pseudo-second order equations. The mode of diffusion process was evaluated with intra-particle diffusion model. The thermodynamic parameters like change in enthalpy (ΔHº); change in entropy (ΔSº) and Gibbs free energy change (ΔGº) were calculated using Van’t Hoff plot. The biosorbent material was characterized with Fourier Transform Infrared (FTIR) spectroscopy and the morphology was identified with Scanning Electron Microscope (SEM) in before and after adsorption of AB dye.

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Treatment of effluent from fertilizer industry by adsorption on willow sawdust-removal of Ni(II) and Cd(II) from the effluent

Ion Exchange Letters ◽

10.35933/iel.2021.13.001 ◽

2021 ◽

pp. 1-12

Author(s):

Raafia Najam ◽

Syed Muzaffar Ali Andrabi

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Second Order ◽

Maximum Adsorption Capacity ◽

Solution Ph ◽

The World ◽

Pseudo Second Order ◽

Almost All ◽

Willow Tree

Sawdust of willow has been investigated as an adsorbent for the removal of Ni(II), and Cd(II) ions from aqueous solution. Since willow tree is widely grown in almost all parts of Kashmir, it can be a common most easily available, sustainable, low cost adsorbent for the treatment of wastewaters in this part of the world where growing industrialization is affecting water quality like elsewhere in the world. Therefore, it is worthwhile to investigate the potential of sawdust of willow tree as an adsorbent for the removal of Ni(II) and Cd(II) ions from aqueous solution as a first step. Batch experiments were conducted to study the effect of some parameters such as contact time, initial concentration of metal ions, solution pH and temperature. Langmuir and Freundlich models were employed for the mechanistic analysis of experimental data obtained. Results reveal that in our system adsorption follows the Langmuir isotherm. The maximum adsorption capacity of Ni(II) and Cd(II) were found to be 7.98 and 7.11 mg/g respectively at optimum conditions. The pseudo-ﬁrst-order and pseudo-second-order models were employed for kinetic analysis of adsorption process. The adsorption process follows pseudo-second-order kinetics. The efficacy of the adsorbent in the treatment of effluent from fertilizer factory has been investigated and the results have been found encouraging.

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Adsorption of Cationic Dyes from Aqueous Solution onto Rapeseed Meal

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.550-553.1550 ◽

2012 ◽

Vol 550-553 ◽

pp. 1550-1555

Author(s):

Guo Lan Li ◽

Song Li ◽

Deng Liang He ◽

Jun Liang Du

Keyword(s):

Aqueous Solution ◽

Adsorption Process ◽

Low Cost ◽

Agricultural Waste ◽

Industrial Effluent ◽

Rapeseed Meal ◽

Adsorption Rate ◽

Cationic Dyes ◽

Pseudo Second Order ◽

Isotherm Equations

Using an agricultural waste rapeseed meal (RM) as adsorbent, the adsorption of methylene blue (MB) and malachite green (MG) from aqueous solution has been studied. For this purpose, the adsorption of MB and MG onto the RM with aspects of kinetics, equilibrium and the effect of pH were investigated. The equilibrium experimental data of MB and MG is in well accordance with isotherm equations of Langmuir and Freundlich. And the maximum uptake capacities (qm) of MB and MG were 122 and 78 mg.g-1respectively. It was observed that the adsorption rate of MB and MG onto the RM were very rapid and the adsorption process followed the pseudo-second-order equation. The RM appears as a very prospective adsorbent for the removal of cationic dyes from industrial effluent due to its high uptake, rapid adsorption rate and low cost.

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Cationic Dye Removal By Sugarcane Bagasse Activated Carbon From Aqueous Solution

Global NEST Journal ◽

10.30955/gnj.001764 ◽

2015 ◽

Vol 17 (4) ◽

pp. 784-795 ◽

Cited By ~ 2

Keyword(s):

Aqueous Solution ◽

Methylene Blue ◽

Activated Carbon ◽

Sugarcane Bagasse ◽

Dye Removal ◽

Adsorption Process ◽

Low Cost ◽

Second Order ◽

Cationic Dye ◽

Pseudo Second Order

<div> <p>Low cost agricultural waste adsorbents can be viable alternatives to activated carbon for the treatment of contaminated wastewater. Sugarcane Bagasse, an abundant agriculture waste in Egypt, was used in the present study to prepare activated carbon. Batch adsorption experiments were conducted to study its effectiveness to remove cationic dye methylene blue from aqueous solution. The effects of initial dye concentrations, agitation time, solution pH and temperature on methylene blue dye removal were investigated. The optimum pH value for the maximum percentage removal of the dye was 7. Adsorption isotherms were determined and modeled with Redlich–Peterson, Langmuir and Freundlich equations at 20ºC.The kinetic data were analyzed using Pseudo-first order, pseudo-second order. The mechanism of the adsorption process was determined from the intraparticle diffusion model. Thermodynamic parameters such as standard enthalpy (ΔH°), standard entropy (ΔS°) and free energy (ΔG°) were determined.  The equilibrium data were best fitted to the Redlich–Peterson isotherm model .The adsorption kinetics was found to follow the pseudo-second-order kinetic model with good correlation coefficient. The positive ΔH<sup>◦</sup> value indicated that the adsorption process was endothermic in nature. The results revealed sugarcane bagasse activated carboncould be employed as a low-cost alternative adsorbent in wastewater treatment. </p> </div> <p> </p>

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Surface interaction of sweet potato peels (Ipomoea batata) with Cd(II) and Pb(II) ions in aqueous medium

10.31221/osf.io/gfdht ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Aqueous Medium ◽

Sweet Potato ◽

Adsorption Process ◽

Low Cost ◽

Correlation Coefficients ◽

Order Kinetic ◽

Thermodynamic Evaluation ◽

Dissociative Mechanism ◽

Pseudo Second Order ◽

Potato Peels

The removal of Cd(II) and Pb(II) ions from aqueous medium was studied using potato peels biomass. The adsorption process was evaluated using Atomic Absorption Spectrophotometer (AAS). The Vibrational band of the potato peels was studied using Fourier Transform Infrared Spectroscopy (FTIR). The adsorption process was carried out with respect to concentration, time, pH, particle size and the thermodynamic evaluation of the process was carried at temperatures of 30, 40, 50 and 60(0C), respectively. The FTIR studies revealed that the potato peels was composed of –OH, -NH, –C=N, –C=C and –C-O-C functional groups. The optimum removal was obtained at pH 8 and contact time of 20 min. The adsorption process followed Freundlich adsorption and pseudo second-order kinetic models with correlation coefficients (R2) greater than 0.900. The equilibrium adsorption capacity showed that Pb(II) ion was more adsorbed on the surface of the potato peels biomass versus Cd (II) ion (200.91 mg/g > 125.00 mg/g). The thermodynamic studies indicated endothermic, dissociative mechanism and spontaneous adsorption process. This study shows that sweet potato peels is useful as a low-cost adsorbent for the removal of Cd(II) and Pb(II) ions from aqueous medium.

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Superior Degradation Performance of Nanoporous Copper Catalysts on Methyl Orange

Metals ◽

10.3390/met11060913 ◽

2021 ◽

Vol 11 (6) ◽

pp. 913

Author(s):

Jinyi Wang ◽

Sen Yang

Keyword(s):

Activation Energy ◽

Methyl Orange ◽

High Efficiency ◽

Low Cost ◽

Degradation Process ◽

Copper Catalysts ◽

Reaction Rate Constant ◽

Nanoporous Structure ◽

Intra Particle Diffusion ◽

Different Temperatures

The development of low-cost and high-efficiency catalysts for wastewater treatment is of great significance. Herein, nanoporous Cu/Cu2O catalysts were synthesized from MnCu, MnCuNi, and MnCuAl with similar ligament size through one-step dealloying. Meanwhile, the comparisons of three catalysts in performing methyl orange degradation were investigated. One of the catalysts possessed a degradation efficiency as high as 7.67 mg·g−1·min−1. With good linear fitting by the pseudo-first-order model, the reaction rate constant was evaluated. In order to better understand the degradation process, the adsorption behavior was considered, and it was divided into three stages based on the intra-particle diffusion model. Three different temperatures were applied to explore the activation energy of the degradation. As a photocatalytic agent, the nanoporous structure of Cu/Cu2O possessed a large surface area and it also had low activation energy, which were beneficial to the excellent degradation performance.

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Adsorption of Ni (II) from Aqueous Solution Based on Porous Magnetic/Chitosan Resin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.936.829 ◽

2014 ◽

Vol 936 ◽

pp. 829-833

Author(s):

Hai Song ◽

Xing Hai Yu ◽

Xiao Qin Zhang ◽

Gui Fang Yan ◽

Yuan Zhi Zhen

Keyword(s):

Aqueous Solution ◽

Aqueous Medium ◽

Thermodynamic Parameters ◽

Adsorption Process ◽

Low Cost ◽

Second Order ◽

Magnetic Chitosan ◽

Spontaneous Process ◽

Chitosan Resin ◽

Kinetics And Thermodynamic

The purpose of this work is to prepare a low-cost biosorbent,Porous Magnetic/Chitosan Resin(MCR), and determine the ability of this biosorbent to removing Ni (II) ion from aqueous medium. Both kinetics and thermodynamic parameters of the adsorption process were also estimated. The thermodynamic parameters indicated an exothermic spontaneous process and the kinetics followed the second-order adsorption process.

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