Porous magnetic resin-g-chitosan beads for adsorptive removal of phenolic compounds

The ability of Cr-bentonite prepared using synthetic wastewater containing chromium was investigated for adsorptive removal of 4-aminophenol and 4-chlorophenol from aqueous solution in a batch system at 25 °C. The physic-chemical parameters including pH value of solution and contact time were studied. The experimental data were analyzed by the Langmuir, Freundlich and Temkin models of sorption. The equilibrium sorption data for 4-aminophenol and 4-chlorophenol were well fitted to Langmuir adsorption isotherm and the monolayer sorption capacity was found to be 26.53 and 23.81 mg/g at 25 °C, respectively. The sorption energy calculated from Dubinin-Redushkevich (D-R) isotherm are 8.31 and 8.20 kJ/mol for the uptake of 4-aminophenol and 4-chlorophenol respectively which indicates that both the sorption processes are chemical in nature. The kinetic data were analyzed using pseudo-first order, pseudo-second order kinetic equation and intraparticle diffusion model. The experimental data fit very well the pseudo-second order kinetic model. Intraparticle diffusion affects 4-aminophenol and 4-chlorophenol uptake. Sorption studies carried out using industrial wastewater samples containing phenolic compounds show that there is significant potential for Cr-bentonite as an adsorbent material for phenollic compounds removal from aqueous solutions.

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Adsorptive Removal of Copper Ions from Aqueous Solution Using Cross-linked Magnetic Chitosan Beads

Chinese Journal of Chemical Engineering ◽

10.1016/s1004-9541(08)60303-1 ◽

2009 ◽

Vol 17 (6) ◽

pp. 960-966 ◽

Cited By ~ 42

Author(s):

Guolin HUANG ◽

Chuo YANG ◽

Kai ZHANG ◽

Jeffrey SHI

Keyword(s):

Aqueous Solution ◽

Copper Ions ◽

Chitosan Beads ◽

Magnetic Chitosan ◽

Adsorptive Removal

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Adsorptive removal of phenolic compounds by using hypercrosslinked polystyrenic beads with bimodal pore size distribution

Reactive and Functional Polymers ◽

10.1016/j.reactfunctpolym.2003.08.003 ◽

2003 ◽

Vol 57 (2-3) ◽

pp. 103-111 ◽

Cited By ~ 38

Author(s):

Chang-Gun Oh ◽

Jou-Hyeon Ahn ◽

Son-Ki Ihm

Keyword(s):

Phenolic Compounds ◽

Pore Size Distribution ◽

Pore Size ◽

Size Distribution ◽

Adsorptive Removal ◽

Bimodal Pore Size Distribution

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Adsorptive removal of phenolic compounds from aqueous solutions using pine cone biomass: kinetics and equilibrium studies

Environmental Science and Pollution Research ◽

10.1007/s11356-018-2315-5 ◽

2018 ◽

Vol 25 (22) ◽

pp. 21949-21960 ◽

Cited By ~ 9

Author(s):

Nadavala Siva Kumar ◽

Mohammad Asif ◽

Mansour I. Al-Hazzaa

Keyword(s):

Phenolic Compounds ◽

Aqueous Solutions ◽

Equilibrium Studies ◽

Adsorptive Removal ◽

Pine Cone

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Alumina-hydroxyapatite nanocomposites and their applications for the removal of phenolic compounds from water: A comparative study

E3S Web of Conferences ◽

10.1051/e3sconf/202015002008 ◽

2020 ◽

Vol 150 ◽

pp. 02008

Author(s):

Khadija Bouiahya ◽

A. Oulguidoum ◽

Abdelaziz Laghzizil

Keyword(s):

Phenolic Compounds ◽

Comparative Study ◽

Specific Surface ◽

Surface Charge ◽

Surface Area ◽

Specific Surface Area ◽

Active Sites ◽

Cost Effective ◽

Adsorptive Removal ◽

Al Content

This study develops cost-effective adsorbents for the treatment of water contaminated with phenolic compounds, including Phenol (Ph), 2-Chlorophenol (2-CPh), and 2-Nitrophenol (2-NPh). Therefore, Alumina-Hydroxyapatite composites were prepared from natural phosphate in the presence of Al3+ ions characterized by various techniques and then the supplementary active sites on their surface may make a better contribution to the phenols remediation. It was concluded that the specific surface area, surface charge and Al content were very suitable for the more adsorptive removal. Results show that the 2-chlorophenol is the more affinity versus hydroxyapatite and its formed composites compared to 2-NPh and Ph in order 2-CPh>2-NPh>Ph.

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