Nickel/nickel boride nanoparticles coated resin: A novel adsorbent for arsenic(III) and arsenic(V) removal

Çiftçi, Tülin Deniz; Henden, Emür

doi:10.1016/j.powtec.2014.09.041

Cited by 66 publications

(13 citation statements)

References 42 publications

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“…Preparation of the Ni/Ni x B-NPCR was adapted from Ç iftçi and Henden. 23 First, the cation exchange resin was ground and sieved. Particles in the range of 250-355 µ m were then obtained.…”

Section: Preparation Of Resin Coated With Ni/ni X B Nanoparticlesmentioning

confidence: 99%

Removal of five cationic dyes using a resin coated with nickel/nickel boride nanoparticles

Çinar¹,

Coşkun²,

Çiftçi³

2018

Turk J Chem

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Resins coated with nickel/nickel boride nanoparticles were used to remove brilliant green, methyl violet, methylene blue, phenosafranine, and brilliant cresyl blue from water. The effects of pH, adsorbent dose, contact time, and initial dye concentration on the adsorption efficiencies were investigated. The point of zero charge for the adsorbent was pH 9.5. Isotherm studies were conducted using Langmuir, Freundlich, and Dubinin-Radushkevich models, and thermodynamic studies were also performed. Adsorption of the five dyes was found to obey the Langmuir isotherm model and was endothermic. The maximum adsorption capacities calculated from the Langmuir isotherm were 66.7, 88.5, 144.9, 56.2, and 147.1 mg/g for methylene blue, brilliant cresyl blue, methyl violet, phenosafranine, and brilliant green, respectively. E values obtained from the Dubinin-Radushkevich isotherm showed that the adsorption mechanism was chemical in nature. Furthermore, three kinetic models (pseudo first-order, pseudo second-order, and intraparticle) were investigated. The pseudo second-order kinetic model fit the five cationic dyes best.

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Section: Preparation Of Resin Coated With Ni/ni X B Nanoparticlesmentioning

confidence: 99%

Removal of five cationic dyes using a resin coated with nickel/nickel boride nanoparticles

Çinar¹,

Coşkun²,

Çiftçi³

2018

Turk J Chem

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“…, and AsO 3 3À . In a reductive environment, below pH 9.1 As(III) exists in the form of inorganic arsenite (H 3 AsO 3 ) and is thermodynamically stable [5].…”

Section: àmentioning

confidence: 99%

Bio-adsorbents for the Removal of Heavy Metals from Water

Mqehe-Nedzivhe¹,

Makhado²,

Olorundare³

et al. 2018

Arsenic - Analytical and Toxicological Studies

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The work represents the bio-adsorption of arsenic(III) from standard solutions and real water samples using a powdered avocado seed as a bio-adsorbent. The adsorbent was synthesized, demineralized, and characterized by X-ray diffraction (XRD), scanning electron microscope coupled with energy dispersive spectroscopy (SEM-EDS), Fourier transformation infrared spectroscopy (FTIR), and Brunauer-Emmett-Teller (BET) theory. Batch adsorption studies were carried out by using avocado seed, and As III was analyzed by using inductively coupled plasma optical emission spectroscopy (ICPOES) after optimizing the following parameters: pH 6, analyte concentration 2 mg L À1 , bio-adsorbent dosage 0.8 g, contact time 120 min between analyte and adsorbent, and temperature from 22 to 40 C. The adsorption capacity of 93.75 mg/g was obtained, and the Langmuir isotherm was adopted by the adsorbent due to the chemisorption that occurs on the surface between the functional groups of the bio-adsorbent and As III .

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“…If E is lower than 20 kJ mol -1 the adsorption process is called physisorption, if it is between 20-40 kJ mol -1 the process is known as ionic exchange, and when E is larger than 40 kJ mol -1 it is a chemisorption process. The Gibbs free energy (ΔG) indicates the energy required to displace the adsorbate onto the surface of the adsorbent 31 and was calculated according to equation (4).…”

Section: Adsorption Energymentioning

confidence: 99%

“…Heavy metals such as lead 1 , mercury 1 , cadmium 2 , chromium 3 , nickel 4 and arsenic metalloid 5 , are found naturally in the earth's crust; eventually these heavy metals can become contaminants in the air, surface water, groundwater, soil and other aquatic environments. In recent decades, the aquatic environment has been exposed to a large contamination mainly caused by the continuous discharges of pollutants containing heavy metals produced from anthropogenic sources 2 .…”

Section: Introductionmentioning

confidence: 99%

Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

et al. 2016

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Globally, water pollution is mainly caused by the presence of heavy metals and metalloids such as arsenic. The majority of the techniques employed in the removal are of low efficiency and high cost. Therefore, in this work it is presented the adsorption processes of arsenic (As III and V) ions employing magnetite nanoparticles (MNPs) synthesized by the aerosol assisted chemical vapor deposition (AACVD) process. The adsorption efficiency was determined at different times and concentrations. The remaining As concentration in the solutions was analyzed by atomic absorption spectroscopy. The adsorbed As ions on the surface of the NMPs was analyzed by high resolution transmission electron microscopy. The results showed an overall removal efficiency of 87% for As +3 and 98% for As +5, in a contact time of 15 minutes. Results suggested the use of NMPs as a promising alternative in the removal of As ions in water.

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Nickel/nickel boride nanoparticles coated resin: A novel adsorbent for arsenic(III) and arsenic(V) removal

Cited by 66 publications

References 42 publications

Removal of five cationic dyes using a resin coated with nickel/nickel boride nanoparticles

Removal of five cationic dyes using a resin coated with nickel/nickel boride nanoparticles

Bio-adsorbents for the Removal of Heavy Metals from Water

Study of the Adsorption of Arsenic (III and V) by Magnetite Nanoparticles Synthetized via AACVD

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