Kinetic, equilibrium and thermodynamic studies for adsorption of nickel ions onto husk of Oryza sativa

Zafar, Shagufta; Khan, Muhammad Imran; Khraisheh, Majeda; Lashari, Mushtaq Hussain; Shahida, Shabnam; Azhar, Muhammad Farooq; Prapamonthon, Prasert; Mirza, Misbah; Khalid, Nasir

doi:10.5004/dwt.2019.24646

Cited by 33 publications

(13 citation statements)

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“…It was noted that the adsorption capacity of MO was enhanced from 17.85 to 19 mg/g with the increase in temperature from 298 to 333 K. It indicated that adsorption of MO onto the prepared AEM was an endothermic process. With the increase in temperature from 298 to 333 K, the increase in adsorption of MO may be either associated to the acceleration of some initially slow adsorption steps or to the formation of some active spaces onto the prepared AEM. , …”

Section: Resultsmentioning

confidence: 99%

“…For it, the correlation coefficient ( R 2 ) was 0.974, indicating that adsorption of MO fitted well to the Freundlich adsorption isotherm. The values of the Freundlich constant “ n ” range from 2 to 10, denoting good adsorption, 1–2, denoting moderate adsorption, and less than one, showing poor adsorption. , Moreover, the D–R adsorption isotherm for it is shown Figure c, and the measured values of its parameters are represented in Table . The determined value of mean adsorption energy ( E ) was 0.971 kJ/mol, exhibiting that adsorption of MO onto the prepared BPPO-based AEM was a physical adsorption process…”

Section: Resultsmentioning

confidence: 99%

“…With the increase in temperature from 298 to 333 K, the increase in adsorption of MO may be either associated to the acceleration of some initially slow adsorption steps or to the formation of some active spaces onto the prepared AEM. 65,66 3.5.5. Effect of pH.…”

Section: Effect Of Initial Concentration Of Mo In Aqueous Solutionmentioning

confidence: 99%

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Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

et al. 2022

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In this research, the development of a novel brominated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)-based homogeneous anion exchange membrane (AEM) via the solution casting method was reported. Fourier transform infrared spectroscopy was used to confirm the successful development of the BPPO-based AEM. The prepared AEM showed excellent thermal stability. It exhibited an ion exchange capacity of 2.66 mg/g, a water uptake ( W R ) of 68%, and a linear swelling ratio of 31%. Methyl orange (MO), an anionic dye, was used as a model pollutant to evaluate the ion exchange ability of the membrane. The adsorption capacity of MO increased with the increase in contact time, membrane dosage (adsorbent), temperature, and pH while declined with the increase in initial concentration of MO in an aqueous solution and molarity of NaCl. Adsorption isotherm study showed that adsorption of MO was fitted well to the Freundlich adsorption isotherm because the value of the correlation coefficient ( R 2 = 0.974) was close to unity. Adsorption kinetics study showed that adsorption of MO fitted well to the pseudo-second-order kinetic model. Adsorption thermodynamics evaluation represented that adsorption of MO was an endothermic (Δ H ° = 18.72 kJ/mol) and spontaneous process. The AEM presented a maximum adsorption capacity of 18 mg/g. Moreover, the regeneration of the prepared membrane confirmed its ability to be utilized for three consecutive cycles. The developed BPPO-based AEM was an outstanding candidate for adsorption of MO from an aqueous solution.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

et al. 2022

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“…The presence of Cr (VI) and Ni (II) metal ions within the surface structure of the biomass is evidenced in Figures 1 and 2, the increase in the width of the spectral bands and the slight decrease in intensity for each of the adsorption processes, the infrared spectroscopy after the adsorption process of Ni (II) being the one that shows a slightly more noticeable decrease in intensity. For both metals, such decrease provided by the variation of the adsorption frequency can be attributed to the binding of Cr (VI) and Ni (II) ions to the different functional groups present in the biomass, as corroborated by the change in the intensity and width of the adsorption peak at 2341 cm −1 , due to the interaction of hydrogen bridges with overtone patterns indicating the presence of carboxylic acids (-COOH) [48], by O-H stretching, as shown in the change of intensity of the adsorption peak at 2927.94 cm −1 attributed to the vibrations of C-H methyl, methylene, and methoxy groups present in the biomass that facilitate the adsorption process and justify the high retention percentages of Cr (VI) ions at high temperatures and Ni (II) ions at ambient conditions [49].…”

Section: Characterization Of the Adsorbent Biomaterialsmentioning

confidence: 98%

Batch and Packed Bed Column Study for the Removal of Cr (VI) and Ni (II) Using Agro-Industrial Wastes

2021

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The objective of this study was to prepare bio adsorbents from agro-industrial wastes from yam starch (YSR) and plantain (PSR) production for its use in the removal of Cr (VI) and Ni (II) in aqueous solution in batch and continuous packed-bed column systems. Bromatological analysis showed that the biomaterials are rich in cellulose, lignin, hemicellulose, and SEM micrographs that evidence a mesoporous structure characteristic of materials of lignocellulosic origin. FTIR evidenced functional groups such as hydroxyl, carbonyl, and methyl, possibly involved in the uptake of metal ions. EDS and FTIR analysis after adsorption confirmed that the retention of the metals on the surface of the adsorbent materials was successful. Cr (VI) and Ni (II) removal efficiencies above 80% were achieved using YSR and PSR in batch systems at the different conditions evaluated. The optimum conditions for removing Ni (II) on PSR were a bed height of 11.4 cm and a temperature of 33 °C, while for YSR, they were: 43 °C and 9 cm for temperature and bed height respectively. The variable with the most significant influence on the removal of Cr (VI) in a batch system on the two bio adsorbents was temperature. In contrast, the adsorbent dose and temperature are relevant factors for PSR Ni (II) removal. Therefore, the residues from the preparation of yam and plantain starch have high potential for removing heavy metals from wastewater and are presented as an alternative for their final disposal.

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“…Desorption of dye from adsorbents was carried out by applying three times adsorption/desorption experiments using the same adsorbents, maximum adsorption of dye conducted by applying optimum agitation time, and pH-value for each adsorbent in this work. The desorption experiments were done by immersing dye-loaded adsorbent into (1.0M) NaClO 4 solution, and the mixture was stirred continuously for 60min at room temperature, and the desorbed dye was separated by centrifugation and filtration, then the concentration of dye determined spectrophotometrically as mention before [16]. The efficiency of removal (S) was determined by Eq.…”

Section: Desorption Studiesmentioning

confidence: 99%

Chemical functionalization graphene oxide for the adsorption behavior of Bismarck Brown dye from aqueous solutions

Mizhir

Abdulwahid

Al-Lami³

2020

Egypt. J. Chem.

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T HE adsorption behavior of cationic dye Bismarck brown BB onto graphene oxide GO, graphene oxide derivatives 3,3ˊ-Diaminobenzidine GODAB, and Ethylene diamine tetraacetic acid-modified graphene oxide GODABE as adsorbents from aqueous solutions were investigated, and characterized by various techniques, like Fourier transform infrared spectroscopy, Field Emission Scanning Electron Microscopy, and X-ray diffraction spectroscopy. Adsorption of BB dye on modified graphene oxide was explored in a series of batch experiments under various conditions. The data were analyzed using Langmuir and Freundlich, models. The Langmuir model was found to be more suitable for the experimental data than other adsorption models. The maximum adsorption capacities were 714.28, 1428.5, and 1111.1 mg/g for GO, GODAB, and GODABE at optimum pH 3 for GO and GODAB, 5 for GODABE and the optimum agitation time were chosen as 45min for GO and 30min for both adsorbents GODAB and GODABE. Kinetic studies revealed that the pseudo-second-order model showed the best fitting to the experimental data. The thermodynamic parameters imply that the adsorption process was spontaneous and endothermic.

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Kinetic, equilibrium and thermodynamic studies for adsorption of nickel ions onto husk of Oryza sativa

Cited by 33 publications

References 62 publications

Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

Adsorption of Methyl Orange from an Aqueous Solution onto a BPPO-Based Anion Exchange Membrane

Batch and Packed Bed Column Study for the Removal of Cr (VI) and Ni (II) Using Agro-Industrial Wastes

Chemical functionalization graphene oxide for the adsorption behavior of Bismarck Brown dye from aqueous solutions

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