Water Solution Polishing of Nitrate Using Potassium permanganate Modified Zeolite: Parametric experiments, kinetics and equilibrium analysis

Alinejad, Abdolazim; Mohseni‐Bandpei, Anoushiravan; Ghaderpoori, Mansour

doi:10.30955/gnj.001833

Cited by 32 publications

(2 citation statements)

References 18 publications

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“…Adsorption kinetics experiments were conducted at the best temperature condition found in experiments, at 100 mg/L using 100 mL of solution volume and 2 g/L of adsorbent load [40], 200 rpm of stirring rate and sampling in 5, 10, 20, 30, 60, 180, 300, 420, and 1440 min for each experiment. The pseudo-first-order (Equation ( 4)), pseudo-second-order (Equation ( 5)), and Elovich (Equation ( 4)) models were adjusted to analyze the experimental kinetic data.…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Tovar

Villabona-Ortíz

González-Delgado

et al. 2023

Water

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Water treatment alternatives such as adsorption using agricultural residues are currently being studied to eliminate pollutants that cause eutrophication in water bodies, avoiding the alteration of aquatic ecosystems. In this work, two bio-adsorbents were prepared using cellulose extracted from corn stems, Zea mays, which were labeled as MC (quaternized cellulose modified with Cetyl trimethyl ammonium chloride) and B 1:1 (biochar obtained by the impregnation of the biomass with an H2SO4 solution, 50% v/v, using a ratio of 1:1% weight of biomass to volume, followed by carbonization at 520 °C for 30 min with a heating rate of 10 °C/min). FTIR, TGA, DSC, and SEM-EDS were used to study the properties of the bio-adsorbents. The effect of temperature over nitrate and phosphate adsorption in the selective and binary system at 100 mg/L was tested at five temperatures: 25, 30, 35, 40, and 45 °C, using a load of the pollutant of 100 mg/L, volume of 5 mL, and a rate of bio-adsorbent of 2 g/L at 200 rpm. Results showed a phosphate removal of 29.1% using the B 1:1 bio-adsorbent at 30 °C and 23.8% with the MC bio-adsorbent at 35 °C. In the case of nitrate, removal of 40% was determined with the B 1:1 bio-adsorbent at 25 °C, while removal of 38.5% was attained at 30 °C after using the MC bio-adsorbent. The equilibrium was reached at 420 min. Nitrate adsorption with the MC sample showed a good adjustment to the pseudo-second-order model. The pseudo-first-order model described the kinetics of phosphate removal with MC, while this model had a good fit with the B 1:1 sample for nitrate and phosphate. Freundlich’s model also adjusted the adsorption equilibrium for both anions with acceptable accuracy. Moreover, the binary study indicated selectivity for the phosphate, suggesting the potential applications of the carbon-based bio-adsorbents for anionic ions remotion in aqueous media.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Tovar

Villabona-Ortíz

González-Delgado

et al. 2023

Water

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“…The use of MNPs is highly desirable in many respects, some of the properties and responses to be mentioned, are: high specific surface interaction with molecules and ions (surface to volume ratio); high absorption efficiency [11]; lack of penetration resistance due to the elimination of internal absorption surfaces in porous adsorbents [12]; and the ability to be efficiently removed from water after treatment with magnets [13]. These properties of MNPs are strongly dependent on characteristics such as composition, size, morphology, magnetic properties as well as surface area and defects.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Oxidizable Pollutants in Waste Water from the Wadi El Bey River Basin Using Magnetic Nanoparticles as Removal Agents

et al. 2023

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Many of the current strategies for removing pollutants from water are based on nanomaterials and nanotechnology. Lower values of Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) in water results in reduction in the amount of oxidizable pollutants. We present a study on the reduction of COD and BOD5 in water from Wadi El Bey River (Tunisia), using magnetite nanoparticles (MNPs) and magnetic fields. The COD and BOD5 removal reached values higher than 50% after 60 min, with optimum efficiency at pH values of ≈8 and for MNPs concentrations of 1 g/L. The use of a permanent magnetic field (0.33 T) showed an increase of COD and BOD5 removal from 61% to 76% and from 63% to 78%, respectively. This enhancement is discussed in terms of the MNPs coagulation induced by the magnetic field and the adsorption of ionic species onto the MNPs surface due to Fe3O4 affinity.

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Modification of NaY zeolite by lanthanum and hexadecyl trimethyl ammonium bromide and its removal performance for nitrate

Sun

Wang

et al. 2020

Water Environment Research

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Nitrate in the effluent of wastewater treatment plants (WWTPs) is the main nitrogen resource in natural water. The excessive nitrogen in natural water causes ecological issues such as aqueous eutrophication. A novel modified NaY zeolite (SMZ‐La) with hexadecyl trimethyl ammonium bromide (HDTMA) and lanthanum (La) as modifying agents for ‐N adsorption was investigated in this study. Results showed that SMZ‐La had a higher adsorption capacity (3.82 mg ‐N/g) than zeolite only modified with HDTMA or La (2.75 and 2.23 mg ‐N/g, respectively). Moreover, the adsorption process was endothermic with a maximum theoretic adsorption of 14.49 mg ‐N/g. X‐ray photoelectron spectroscopy (XPS) analysis indicated that adsorption rate principally depended on chemisorption between SMZ and ‐N. Thermogravimetric analysis showed that HDTMA was loaded on the surface of NaY zeolite with double layer. Scanning electron microscope and X‐ray spectroscopy analysis illustrated that La was primarily loaded in the pore of NaY zeolite, and the loading of HDTMA and La did not affect the original crystal structure of NaY zeolite. The novel adsorbent provided a promising perspective for nitrogen control in WWTPs and natural water.Practitioner points A novel modified zeolite (SMZ‐La) was prepared successfully with HDTMA and La. SMZ‐La had an excellent adsorption capacity compared to SMZ and NaY‐La. There were both physical and chemical adsorptions in the adsorption process of SMZ‐La on ‐N.

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Water Solution Polishing of Nitrate Using Potassium permanganate Modified Zeolite: Parametric experiments, kinetics and equilibrium analysis

Cited by 32 publications

References 18 publications

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Selective and Binary Adsorption of Anions onto Biochar and Modified Cellulose from Corn Stalks

Reduction of Oxidizable Pollutants in Waste Water from the Wadi El Bey River Basin Using Magnetic Nanoparticles as Removal Agents

Modification of NaY zeolite by lanthanum and hexadecyl trimethyl ammonium bromide and its removal performance for nitrate

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