Simultaneous adsorption of lead and aniline onto magnetically recoverable carbon: optimization, modeling and mechanism

Kakavandi, Babak; Jafari, Ahmad Jonidi; Kalantary, Roshanak Rezaei; Nasseri, Simin; Esrafili, Ali; Gholizadeh, Abdolmajid; Azari, Ali

doi:10.1002/jctb.4925

Cited by 54 publications

(10 citation statements)

References 37 publications

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“…In summary, the electrostatic interaction between the catalyst (+) and 2-CP (-) with increasing and concentrating the contaminant on the catalyst and expanding the contact time between the two, is the main factor boosting the degradation e ciency in acidic conditions. In contrast, at high pHs (pH> pH pzc ), negatively charged surface of the catalyst reduces the e ciency of degradation by creating an electrostatic repulsion force between the catalyst and 2-CP [18,19]. Similar results have been reported in Rashid et al study investigating the removal of 2-CP from aqueous solution using Fe 3 O 4 / SiO 2 / TiO 2 .…”

Section: Statistical Designsupporting

confidence: 68%

Modeling and optimization of 2-Chlorophenol degradation using ultrasound assisted Fe3O4@TiO2: Central Composite Design-Genetic Algorithm approach

Azari¹,

Dobaradaran²,

Raeesi³

et al. 2021

Preprint

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In this study, the ultrasound-catalyst hybrid system was applied for degradation of 2-chlorophenol (2-CP) from aquatic environment. The produced catalyst was characterized by transmission electron microscopy, scanning electron microscopy, X-ray scattering, vibration magnetometer and nitrogen adsorption/desorption analysis, showing the successful synthesize of the core-shell structure of magnetic TiO2. A Central Composite Design (CCD) was applied in MATLAB software to investigate the effective parameters in degradation and evaluate the removal of 2-CP by M-TiO2-US system. Kinetics, intermediate products and catalyst reusability were determined under optimal conditions. The results indicated that pH of 4.413, catalyst dosage of 0.733 g/L, 2-CP concentration of 2.549 mg/L, ultrasound power of 55.605 W/L had the maximum degradation efficiency (97.776 %) and pH was assigned as the most effective parameter for the degradation of 2-CP. Superoxide and hydroxyl radicals were considered as the main cause of 2-CP degradation. Catalyst stability was investigated in 5 replicates and verified. The overall results show that the M-TiO2 and US hybrid system has promising performance in the degradation of 2-chlorophenol and has the ability to use on a larger scale.

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Section: Statistical Designsupporting

confidence: 68%

Modeling and optimization of 2-Chlorophenol degradation using ultrasound assisted Fe3O4@TiO2: Central Composite Design-Genetic Algorithm approach

Azari¹,

Dobaradaran²,

Raeesi³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

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“…[1][2][3][4] The mutagenic and carcinogenic natures of aniline and its derivatives make them injurious to human health. 5,6 The presence of aniline in human blood can also lead to transformation of hemoglobin into methemoglobin causing erythrocyte damage, spleen effect and anorexia. 5,7 The effluent standard for aniline and its derivatives set by the US EPA, CPCB (Central Pollution Control Board) and EU is 1.0 mg L −1 for safe and sanitary discharge.…”

Section: Introductionmentioning

confidence: 99%

“…5,6 The presence of aniline in human blood can also lead to transformation of hemoglobin into methemoglobin causing erythrocyte damage, spleen effect and anorexia. 5,7 The effluent standard for aniline and its derivatives set by the US EPA, CPCB (Central Pollution Control Board) and EU is 1.0 mg L −1 for safe and sanitary discharge. 2 Aniline and its derivatives are widely found in the effluents from dyestuffs, paints, rubbers, pharmaceuticals and plastics industries.…”

Section: Introductionmentioning

confidence: 99%

“…2 Aniline and its derivatives are widely found in the effluents from dyestuffs, paints, rubbers, pharmaceuticals and plastics industries. 5,8 Aniline is also used as a key precursor and intermediate in chemical synthesis industries. 3,9 The annual discharge of aniline from domestic and industrial wastewater is about 30 000 tons.…”

Section: Introductionmentioning

confidence: 99%

“…Aniline and its derivatives are listed as prior pollutants by many national and international environmental agencies 1‐4 . The mutagenic and carcinogenic natures of aniline and its derivatives make them injurious to human health 5,6 . The presence of aniline in human blood can also lead to transformation of hemoglobin into methemoglobin causing erythrocyte damage, spleen effect and anorexia 5,7 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biopolymer magnetic chitosan–graphene oxide composite for removal and extraction of aromatic amines from aqueous samples

Zeb

Shah

Jan

2022

J of Chemical Tech & Biotech

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BACKGROUND Magnetic chitosan was crosslinked with graphene oxide and a magnetic chitosan–graphene oxide composite was synthesized and characterized. The composite was used for the removal and extraction of aromatic amines like aniline, N,N‐dimethylaniline and N,N‐diethylaniline. RESULTS Experimental factors affecting the adsorption process such as solution pH, time of contact, amount of adsorbent, initial concentration of analyte and temperature of solution were studied. The maximum adsorption capacity was found to be 7.55 mg g−1 for aniline, 6.96 mg g−1 for N,N‐dimethylaniline and 6.86 mg g−1 for N,N‐diethylaniline using pH 7 at room temperature. Kinetic and adsorption isotherm models were applied to the data which showed the best fit of experimental data to pseudo‐second‐order kinetic model and Langmuir isotherm for all three analytes. CONCLUSIONS The adsorption process was found to be spontaneous and exothermic as revealed by thermodynamic study. The maximum recoveries for aniline, N,N‐dimethylaniline and N,N‐diethylaniline were 98.56%, 97.05% and 95.26%, respectively. Successful application of the adsorbent was found for spiked aqueous samples. © 2022 Society of Chemical Industry (SCI).

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Surface‐functionalization of activated carbon with polyglucosamine polymer for efficient removal of cadmium ions

Berber

2020

Polymer Composites

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In this work, a polymer‐activated carbon composite was prepared by grafting polyglucosamine polymer on the surface of activated carbon, which was produced by a carbonation/calcination/oxidation process of the Date palm pits. The obtained composite was confirmed by different techniques, including, X‐ray, infrared, thermal analysis, scanning electron spectroscopy, and Brunauer‐Emmett‐Teller protocol surface area measurements. Subsequently, a comprehensive adsorption study was performed to assess the synergetic effect of the composite structure on the adsorption behavior of Cd2+ ions. The adsorption capacity of Cd2+ ions reached 35.0 mg/g at optimum adsorption conditions of pH 5.5, a composite dose of 200 mg, and a contact time 120 minutes. The kinetic, isothermal, and thermodynamics results indicated chemisorption, an exothermic, and a spontaneous adsorption process. The adsorption mechanism of the composite correlated to the functional groups (NH2 and COOH) and the cavities of the composite (surface area 699.11 m2/g, pore volume 0.28 cm3/g), which potentially contributed to the capture of the Cd2+ ions. From the recyclability point of view, the composite was able to maintain around 89% of its initial adsorption capacity after the third adsorption‐desorption cycle.

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Simultaneous adsorption of lead and aniline onto magnetically recoverable carbon: optimization, modeling and mechanism

Cited by 54 publications

References 37 publications

Modeling and optimization of 2-Chlorophenol degradation using ultrasound assisted Fe3O4@TiO2: Central Composite Design-Genetic Algorithm approach

Modeling and optimization of 2-Chlorophenol degradation using ultrasound assisted Fe3O4@TiO2: Central Composite Design-Genetic Algorithm approach

Biopolymer magnetic chitosan–graphene oxide composite for removal and extraction of aromatic amines from aqueous samples

Surface‐functionalization of activated carbon with polyglucosamine polymer for efficient removal of cadmium ions

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