Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

Heibati, Behzad; Rodríguez‐Couto, Susana; Turan, Nurdan Gamze; Özgönenel, Okan; Albadarin, Ahmad B.; Asif, Mohammad; Tyagi, Inderjeet; Agarwal, Shilpi; Gupta, Vinod Kumar

doi:10.1016/j.jiec.2015.06.016

Cited by 49 publications

(18 citation statements)

References 67 publications

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“…(I) AO7 endangers human existence and health; for example, in the absence of oxygen, azo dyes can undergo degradation and produce highly toxic aromatic amines, the prolonged exposure to which can lead to apoptosis or trigger genetic mutations. (II) It imparts damage to the appearance of water [ 7 ]; when it is dissolved, the dye stains water, and the resulting dark-colored wastewater is difficult to completely decolorize by normal biochemical methods. (III) AO7 affects the survival of aquatic plants and animals; the dye absorbs most of the light penetrating the wastewater, which affects the normal growth of photosynthetic plants and microorganisms in the water.…”

Section: Introductionmentioning

confidence: 99%

Ligands-Coordinated Zr-Based MOF for Wastewater Treatment

Tsai

Xie

et al. 2018

Nanomaterials

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Isostructural zirconium-based metal–organic frameworks (Zr-MOFs) have attracted the attention of researchers because of their remarkable stability at high temperatures and high pressures and their chemical stabilities against acids and bases. Due to this stability, Zr-MOFs can be utilized in adsorption research, and the adsorption performance of a Zr-MOF depends on the pore size and the surroundings of the MOF. In this study, as the dimensions changed and the adsorption was carried out, the Zr-MOF material remained stable, and the adsorption of the best state was achieved at 235 mg/g. Through the simulation of theoretical kinetic models of Zr-MOFs, we initially postulated that the adsorption capacity is proportional to the pore size and that acid orange 7 (AO7) was adsorbed by the MOFs. Afterwards, we verified our hypotheses through a series of Brunauer–Emmett–Teller (BET) data analysis; non-local density function theory (NLDFT) was mainly used to analyze the data. Moreover, we determined that physical adsorption occurs on the surface of the MOFs during the adsorption process, while chemisorption occurs in the form of dye molecules combining with active sites. Ultimately, we concluded that the larger the pore size, the stronger the adsorption capacity, and this contribution casts a new light on the issue of wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Ligands-Coordinated Zr-Based MOF for Wastewater Treatment

Tsai

Xie

et al. 2018

Nanomaterials

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“…The main characteristics of the Langmuir isotherm model can be expressed by an equilibrium parameter, R L , defined as follows:

R_{L} = \frac{1}{1 + b C_{0}}

where: C 0 is the initial fluoride concentration (mg/L) and R L represents the type of isotherm. For a favorable biosorption 0 < R L < 1, unfavorable biosorption 1 < R L , linear biosorption R L = 1, and irreversible biosorption process R L = 0 . The parameters of the Langmuir equation were computed and are given in Table .…”

Section: Resultsmentioning

confidence: 99%

Effective Parameters, Equilibrium, and Kinetics of Fluoride Adsorption on Prosopis cineraria and Syzygium cumini Leaves

Keshtkar

Dobaradaran

Keshmiri

et al. 2019

Env Prog and Sustain Energy

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This study was designed to present a facile and effective biosorbent from Prosopis cineraria and Syzygium cumini leave (PCL and SCL) for fluoride removal. The test was done in batch mode and the effect of contact time (5, 25, 60, 90, and 120 min), initial fluoride concentration level (3, 5, 8, and 12 mg/L), and biosorbent dose (1, 3, 5, 10, and 25 g/L) on the biosorption process were examined. The optimum conditions for the maximum fluoride removal were occurred at 1 g/L biosorbent dose and contact time of 120 (for PCL) and 90 min (for SCL). The results suggested that the pseudo‐second‐order and Langmuir isotherm models described the experimental data well. According to the Langmuir model, the maximum adsorption capacity of fluoride for PCL and SCL was attained 11.52 and 7.4 mg/g, respectively. Based on Boyd and intra‐diffusion models, the biosorption of fluoride onto PCL and SCL was mainly controlled by film‐diffusion. The study revealed the potential use of PCL and SCL as two new effective biosorbents for the removal of fluoride from aqueous solution. © 2019 American Institute of Chemical Engineers Environ Prog, 38: S429–S440, 2019

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“…NP sample indicates strong bands at 475, 620, 799, and 1085 cm -1 assigned to the stretching vibrations and bending modes of the Si-O and Al-O bonds, as well as the Si-O-Al stretching vibration for NP, CP, and CP after the adsorption process (4,29). In addition, the peak at 1650 cm -1 can be ascribed to the bending vibration of the H-O-H bond (16). The bands at 3470 cm -1 belong to the stretching vibration of H 2 O molecules (moisture).…”

Section: Adsorbent Characterizationmentioning

confidence: 97%

“…Pumice has attracted considerable interest because of its large surface area, high water adsorption capacity, surfaces with the negative charge, and cost-effectiveness. This volcanic rock has a high silica content (generally 60%-75% SiO 2 ), which results in high abrasive characteristics (16). The silica surface consists of silanol groups that extend over the matrix of the silica.…”

Section: Introductionmentioning

confidence: 99%

Carbon Modified Pumice as a New Adsorbent for the Rapid Removal of Fluoride Ions From Aqueous Phase

Asgari

Rafizadeh

Ghasemi

2018

Avicenna J Environ Health Eng

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Carbon modified pumice (CP) was successfully synthesized for the rapid removal of fluoride ions from the solvent phase. The batch experiments were conducted to investigate the effect of several operational parameters including carbon content, solution pH, initial fluoride concentration, contact time, adsorbent dose, and temperature on the CP efficiency in fluoride adsorption. The surface morphology, as well as the structural and functional groups of the synthesized CP were evaluated using the scanning electron microscopy (SEM), Brunauer, Emmett and Teller (BET) method, X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR), respectively. The adsorption isotherm and kinetic data were found to be in good agreement with the Langmuir and pseudo-second-order models, respectively. Finally, the negative value of ΔG° revealed the spontaneous nature of the fluoride adsorption onto the CP adsorbent.

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Removal of noxious dye—Acid Orange 7 from aqueous solution using natural pumice and Fe-coated pumice stone

Cited by 49 publications

References 67 publications

Ligands-Coordinated Zr-Based MOF for Wastewater Treatment

Ligands-Coordinated Zr-Based MOF for Wastewater Treatment

Effective Parameters, Equilibrium, and Kinetics of Fluoride Adsorption on Prosopis cineraria and Syzygium cumini Leaves

Carbon Modified Pumice as a New Adsorbent for the Rapid Removal of Fluoride Ions From Aqueous Phase

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