Degradation and removal of p-nitroaniline from aqueous solutions using a novel semi-fluid Fe/charcoal micro-electrolysis reactor

Malakootian, Mohammad; Pournamdari, Mostafa; Asadipour, Ali; Mahdizadeh, Hakimeh

doi:10.1007/s11814-018-0166-x

Cited by 22 publications

(7 citation statements)

References 11 publications

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“…The band at 1612 cm -1 corresponds to the aromatic C=C stretch, that at 1384 cm -1 is characteristic of the C-OH stretch, while that at 780 cm -1 is ascribed to the out-of-plane C-H bending vibration. The strong absorption below 600 cm -1 is attributed to the vibrations of TiO 2 [4,5,[20][21][22] , which shows that TiO 2 -FSAC was successfully prepared. Box-Behnken design in response surface methodology (RSM) was applied to ascertain the optimum conditions for adsorption of p-NA by TiO 2 -FSAC.…”

Section: Characterization Of Fsac-tio2mentioning

confidence: 99%

“…Adsorption has been regarded as one of the most encouraging technologies in the removal of p-NA. Low-cost materials from agricultural wastes for the removal of organic pollutants in wastewater are gaining acceptance from scientists [4][5][6] . Now, new materials that are highly effective and cheap to treat wastewater are being sought and developed by researchers [4,5,[7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

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Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

2022

JJC

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Titanium (IV) oxide-flamboyant seeds activated carbon (TiO2-FSAC) composite was studied as a promising adsorbent for p-nitroaniline (p-NA) removal from aqueous media using batch technique. The surface characteristics of the composite were determined by Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy, Energy Dispersed X-ray Spectroscopy and Brunauer–Emmett–Teller surface area analysis. The results showed that TiO2-FSAC is highly porous with a surface area of 601.77 m2/g and pore diameter in the mesoporous region. Box-Behnken design (BBD) under Response Surface Methodology (RSM) was employed for the optimization of four operating parameters: initial p-NA concentration, pH, adsorbent dosage and time. The results revealed that the amount of p-NA adsorbed increased with an increase in initial p-NA concentration, low pH, and low adsorbent dosage and was not affected by time in the investigated range. The correlation between p-NA adsorption by TiO2-FSAC and the process variables was sufficiently established by the quadratic model with a high R2 value (0.973), which is in agreement with adjusted R2 (0.945). The optimum amount of p-NA adsorbed was 45.0 mg/g accomplished at Co = 300 mg/L, pH 2, 0.1 g adsorbent dosage and 362.5 min time.

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Section: Characterization Of Fsac-tio2mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

2022

JJC

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“…This experimental research was completed in winter 2021 at the Environmental Health Engineering Research Center of Kerman University of Medical Sciences. Adsorption studies were performed to investigate the effect of various parameters such as contact time (45 and 90 minutes), pH (2)(3)(4)(5)(6)(7)(8), initial concentration of Cu 2+ and Pb 2+ (100-500 mg/L), and adsorbent concentration (2, 4, 6 g).…”

Section: Batch Sorption Studies For Heavy Metals Removalmentioning

confidence: 99%

Single and competitive adsorption of Cu²⁺ and Pb²⁺ by tea pulp from aqueous solutions

Pasgar

Nasiri

Javid

2021

Environ Health Eng Manag

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Background: Removal of heavy metals by bioadsorbents is one of the effective and inexpensive methods for water and wastewater treatment. The aim of this study was to investigate the ability of tea pulp in order to remove Cu+2 and Pb+2 metals in two states of adsorption (single element and two elements) from aqueous solutions. Methods: Experiments were performed on synthetic and real samples at ambient temperature. The effect of solution pH, adsorbent dose, contact time, and initial concentration on single and competitive removal of copper metals and lead was studied. Adsorption kinetics and adsorption isotherms were analyzed by pseudo-second-order kinetic equations, Elovich model and intraparticle diffusion, Freundlich and Langmuir equations, respectively. Results: The maximum adsorption capacity for copper and lead was observed at pH=5-8 and pH=4-8, respectively. Maximum adsorption capacity for copper and lead by tea pulp in single-element solution (single) was 37.17 and 48.54 mg/g and in two-element solution (competitive), was 28.41 and 43.47 mg/g, respectively. The adsorption reaction of heavy metals by tea pulp followed the Longmuir isotherm and pseudo-second-order kinetic models. Conclusion: Tea pulp as an inexpensive bioadsorbents is able to remove about one-third of the copper, and approximately, half of lead from aqueous solutions, so its use in the treatment of aqueous solutions will be beneficial.

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“…Mohammad et al investigated the Acid Red 18 degradation by a hybrid micro‐electrolysis process including iron (Fe) and charcoal(C) under the influence of ultrasonic waves with sonophotocatalyst process using ZnO nanoparticles. The highest removal efficiency under the optimal conditions could reach 98.86% and 94%, respectively (Malakootian et al, 2019; Malakootian et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Research on dynamics and mechanism of treatment on phenol simulated wastewater by the ultrasound cooperated electro‐assisted micro‐electrolysis

Cai

et al. 2021

Water Environment Research

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In the research, the ultrasound was introduced to the electric‐assisted micro‐electrolysis system to improve the treatment efficiency of phenol simulated wastewater. The results showed that the phenol removal efficiency was significantly enhanced by the electric‐assisted micro‐electrolysis method in the presence of ultrasound, which could reach 88.61% under the initial value of pH 4, an iron dosage of 50 g/L, a mass ratio of iron/carbon of 1:1, and the initial phenol concentration of 100 mg/L. The degradation kinetics of phenol was in accordance with a second‐order kinetic model. The synergistic effect of the ultrasonic and electric‐assisted micro‐electrolysis method was obvious with a synergistic factor at 98.02%. The degradation mechanism of phenol was that the treatment could effectively destroy the benzene ring structure of phenol in the liquid phase with ring‐opening reaction and small molecules substances generated. Practitioner Points The article was the pretreatment of coking wastewater. First, the synergistic effects between ultrasound and electrochemical method through the removal ratio of phenol were found. Second, it was showed that the initial pH and applied intensity of voltage had the effects on removal ratio of phenol by the UEME method. Third, the synergy factor (Syn) between ultrasonic and electrochemical method was 98.02%. Finally, the mechanism of the UEME degradation of phenol was researched. The technology could effectively improve the biodegradability of coking wastewater and provide conditions for subsequent biochemical treatment. So, we thought this article was suitable for the journal.

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Degradation and removal of p-nitroaniline from aqueous solutions using a novel semi-fluid Fe/charcoal micro-electrolysis reactor

Cited by 22 publications

References 11 publications

Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

Single and competitive adsorption of Cu²⁺ and Pb²⁺ by tea pulp from aqueous solutions

Research on dynamics and mechanism of treatment on phenol simulated wastewater by the ultrasound cooperated electro‐assisted micro‐electrolysis

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Degradation and removal of p-nitroaniline from aqueous solutions using a novel semi-fluid Fe/charcoal micro-electrolysis reactor

Cited by 22 publications

References 11 publications

Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

Optimization of p-Nitroaniline Adsorption from Aqueous Medium by TiO2-Flamboyant Seeds Activated Carbon Composite

Single and competitive adsorption of Cu2+ and Pb2+ by tea pulp from aqueous solutions

Research on dynamics and mechanism of treatment on phenol simulated wastewater by the ultrasound cooperated electro‐assisted micro‐electrolysis

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Single and competitive adsorption of Cu²⁺ and Pb²⁺ by tea pulp from aqueous solutions