Removal of phenol in aqueous solution by adsorption onto green synthesized coinage nanoparticles beads

Pal, Jolly; Deb, Manas Kanti; Deshmukh, Dhananjay K.

doi:10.1007/s11164-014-1898-9

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…Ayala et al (2014) investigated the synthesis of zeolites that were presented high CEC as compared to the others. Pal et al (2015) studied the adsorption of Ph from aquatic media by silver nanoparticles and gold nanoparticles as adsorbents. They found that removing efficiency was 90% for Ph.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of chlorophenolic compounds on activated clinoptilolite

Uçar

2019

Adsorption Science & Technology

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Nowadays, phenol and chlorophenols give rise to many organic pollutants. Concurrently, the occurring of phenolic compounds in aquatic ambit creates potential human health and environmental problems. There are a lot of technologies available for the treatment of organic pollutants. To remove phenol and chlorophenols, adsorption is a wastewater purification method. In this study, natural and activated clinoptilolite were carried out for the removal of phenol, orthochlorophenol, para-chlorophenol, and meta-chlorophenol. Activated clinoptilolite was prepared via acid activation and evaluated by means of Fourier transform infrared, scanning electron microscope, X-ray diffraction, X-ray fluorescence, and Brunauer-Emmett-Teller analysis. Phenol and chlorophenols have high adsorption rate, and equilibrium was reached in approximately 30 min. The maximum adsorptions of phenol, ortho-chlorophenol, meta-chlorophenol, and para-chlorophenols on the activated clinoptilolite were 6.7386, 8.6300, 9.5787, and 7.3758 mg g À1 , respectively. The affinity order was in the following order: m-CP > o-CP > p-CP > Ph. The adsorption of phenol and chlorophenols decreased after pH ¼ 6.25. Using the thermodynamic data, Gibbs free energy of the activated clinoptilolite was evaluated. The effects of different conditions such as pH, adsorption time, and initial concentration were analyzed. The adsorption rates of phenol and chlorophenols were constituted to be the maximum at approximately pH 6.5. Desorption of phenol and chlorophenols was carried out using ethyl alcohol solution (30%, v/v). The adsorption isotherms of phenol and chlorophenols on activated clinoptilolite were evaluated. The equilibrium adsorption data were the best suited to Freundlich adsorption isotherm pattern.

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Section: Introductionmentioning

confidence: 99%

Adsorption of chlorophenolic compounds on activated clinoptilolite

Uçar

2019

Adsorption Science & Technology

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“…There are many techniques for treatment of wastewater contaminated with phenolic compounds, including biological processes [5,6], coagulation [7], membranes [8], electro-Fenton and photoelectro-Fenton treatments [9], ozonation [10], oxidation [11,12], and adsorption [13][14][15][16]. However, application of these methods is restricted since they are very expensive and involve high initial capital and operational costs.…”

Section: Introductionmentioning

confidence: 99%

Activated carbon obtained from sapelli wood sawdust by microwave heating for o-cresol adsorption

et al. 2016

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Activated carbon (AC) was prepared from sapelli wood sawdust using a microwave heating process. The biomass was mixed with inorganic components (lime ? ZnCl 2 and FeCl 3) to form a homogeneous paste. The AC samples are denoted as AC-1A (100 g sapelli wood sawdust ? 20 g lime ? 80 g ZnCl 2), AC-2A (150 g sapelli wood sawdust ? 20 g lime ? 80 g ZnCl 2), AC-1B (100 g sapelli wood sawdust ? 20 g lime ? 40 g ZnCl 2 ? 40 g FeCl 3), and AC-2B (150 g sapelli wood sawdust ? 20 g lime ? 40 g ZnCl 2 ? 40 g FeCl 3). The samples were placed in a microwave oven and pyrolyzed under nitrogen flow. To increase their porosity, the pyrolyzed samples were subjected to a leaching process (with 6 mol L-1 HCl) under reflux to eliminate inorganic components. Several analytical techniques such as Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and N 2 isotherm and vapor adsorption analyses were performed to characterize the AC materials. The samples presented high Brunauer-Electronic supplementary material The online version of this article (

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