Removal of phenol from aqueous solutions by sorption on low cost clay

Nayak, Preeti Sagar; Singh, B. K.

doi:10.1016/j.desal.2006.07.005

Cited by 94 publications

(45 citation statements)

References 17 publications

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“…Using acid treated coconut ber activated carbon for the removal of 2-CP showed a decline from 58% to 23%; for the removal of TCP, a decrease from 78% to 30% was revealed due to changes in pH from 2 to 10 [28]. PH 7.0 was selected as an optimum pH value from the experimental results.…”

Section: E Ect Of Phmentioning

confidence: 99%

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

et al. 2017

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Abstract. This study was performed to measure the potential utilization of agro-waste to generate nanoparticles and evaluate its capability as a low-cost adsorbent for phenol removal. Adsorption studies for phenol removal using aloe vera and mesquite leaves nanoparticles were carried out under various experimental conditions including pH, nanobioadsorbent dosage, phenol concentration, contact time, temperature, and ionic strength in a batch reactor. The adsorption kinetics were applied by pseudo-rst order and pseudosecond order models and isotherm technique by Freundlich and Langmuir isotherms models. The results showed that the rate of phenol adsorption increases in both nano-bioadsorbents with an increase in pH up to 7, adsorbent dosage up to 0.08 gL 1 , phenol initial concentration up to 32 mgL 1 , contact time up to 60 min, and a raise in temperature. The adsorption data followed the Freundlich isotherm model. The kinetic studies indicated that the adsorption of phenol with nano-bioadsorbents was best described by the pseudo-second order kinetics. We found that the nanoparticles prepared from aloe vera and mesquite leaves had a high capability in adsorption of phenol, besides the point that they could be accessed at low cost. These agro-wastes can be used to remove phenol from aqueous environments.

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Section: E Ect Of Phmentioning

confidence: 99%

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

et al. 2017

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“…2). Such a behavior was observed practically by all the groups using halloysite as an adsorber for compounds [17,18,[39][40][41][42].…”

Section: Halloysite Characteristicsmentioning

confidence: 91%

Adsorption of an active molecule on the surface of halloysite for controlled release application: Interaction, orientation, consequences

Hári

Polyák

Mester

et al. 2016

Applied Clay Science

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The goal of the study was to check the possible use of halloysite nanotubes as a controlled release natural antioxidant device with quercetin as the active component. The mineral was thoroughly characterized by various techniques including the determination of particle and tube morphology, specific surface area, pore size and volume, as well as surface energy. The high surface energy of halloysite predicted strong adsorption of active molecules on its surface and consequently difficult release. FTIR spectroscopy confirmed the existence of strong interactions, energetically heterogeneous halloysite surface and multilayer coverage at large loadings. FTIR and XRD experiments proved the complete lack of intercalation and showed that below 3.5 wt% quercetin loading, most of the molecules are located within the halloysite tubes. Molecular modelling indicated the parallel orientation of quercetin molecules with the surface. Critical concentrations derived from various measurements agreed well with each other further confirming that up to about 4.0 wt% loading, quercetin is bonded very strongly to the halloysite surface. As a consequence, the dissolution of active molecules is very difficult or impossible, especially into apolar media, thus neither stabilization nor controlled release effect can be expected below that concentration.

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“…The model parameters provide an understanding of the sorption mechanism, surface properties and affinity of the adsorbent. 29 Correlation coefficients (R 2 ) were calculated to identify the model best suited to the determination of the saturated adsorption capacity of both ACs.…”

Section: Adsorption Isothermmentioning

confidence: 99%

Microwave treated activated carbon from industrial waste lignin for endosulfan adsorption

Maldhure

Ekhe

2011

J of Chemical Tech & Biotech

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BACKGROUND: Disposal of large amounts of recurring industrial waste lignin is a big problem for the paper industries and there is need for a rational alternative to utilize this waste lignin. Thus highly porous activated carbons (ACs) were prepared from lignin using H 3 PO 4 as an activating chemical with and without microwave treatment in a self-generated environment at 600• C and the influence of different types of impregnation on the adsorption-desorption capacities of endosulfan from a liquid phase was studied.

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Removal of phenol from aqueous solutions by sorption on low cost clay

Cited by 94 publications

References 17 publications

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

Adsorption of an active molecule on the surface of halloysite for controlled release application: Interaction, orientation, consequences

Microwave treated activated carbon from industrial waste lignin for endosulfan adsorption

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