Cold catalytic recovery of loaded activated carbon using iron oxide-based nanoparticles

Bach, Altai; Zelmanov, Grigory; Semiat, Raphael

doi:10.1016/j.watres.2007.07.044

Cited by 14 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However this precipitate could be a more accessible iron source than that deposited onto AC. Indeed, Bach et al [14] and Chiu et al [15] reported high regeneration yield of ACs (exhausted with ethylene glycol or phenol) by heterogeneous Fenton oxidation using non-supported iron oxide nanoparticles: up to 90% of the original adsorption capacity could be retained after four cycles. Figure 3 compares the evolution of the adsorption capacity of bare AC treated by PP-CWAO with and without the addition of iron salt to that of metalloaded carbons.…”

Section: 12mentioning

confidence: 99%

“…For instance, from 86% to 93% regeneration efficiency was achieved over 3 cycles by H 2 O 2 /UV following acetone or isopropanol adsorption [12]. Similarly, Fenton-type oxidative treatment (at pH close to 3) allowed over 80% re-adsorption yield in the case of methyl tert-butyl ether [13], ethylene glycol [14], phenol [15] and organochloro compounds [16]. On the other hand, homogeneous photo-Fenton oxidation only permitted to recover 56% of AC adsorption capacity after 2 recycles in the case of phenol, due to the reduction of specific surface area [17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation

Benhamed

Barthe

Kessas

et al. 2017

Environmental Technology

View full text Add to dashboard Cite

Oxidative regeneration of activated carbon (AC) exhausted with phenolic compounds is still a challenging issue due to the frequent porosity loss. Addition of low HO amount is investigated as a way to promote catalytic wet air oxidation (CWAO) of adsorbed pollutants and thereby to recover absorbent properties. Commercial AC and transition metal (iron or copper)-modified counterparts are tested in repeated adsorption/batch peroxide-promoted CWAO of phenol. Cycles are operated in both fixed bed and slurry reactors to vary the initial pollutant distribution in between the two phases. Influence of metal location is also studied by adding iron salt to the pollutant solution prior to perform peroxide-promoted oxidation on bare carbon. Regeneration results are analyzed through a detailed analysis of both the solid and the liquid phases during the oxidative treatment. It is proved that a convenient HO dosage can increase the lifetime of adsorbent in adsorption-oxidation cycles, but coupling with (un)supported metal oxide does not provide significant gain.

show abstract

Section: 12mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation

Benhamed

Barthe

Kessas

et al. 2017

Environmental Technology

View full text Add to dashboard Cite

show abstract

“…Iron based nanocatalysts have been widely known to serve the purpose in synthesis of hydrocarbons, not only by hydrogenation reaction of CO which is employed in Fischer-Tropsch process, but also through hydrogenation of CO 2 to prepare light olefins [14]. Ferrite nanocatalysts have been reported to be used in the treatment of waste water by oxidation process, allowing purification of water along with regeneration of adsorbed support surface [15]. Supported iron oxide nanoparticles as heterogeneous catalysts have been extensively investigated in a large number of processes such as acid-catalyzed reactions, C-C and C-O cross coupling reactions, oxidation and hydrogenation reactions [12].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Iron-Titanate Nanocomposite as a Sustainable Material for Selective Amination of Substitued Nitro-Arenes

et al. 2020

View full text Add to dashboard Cite

The fabrication of durable and low-cost nanostructured materials remains important in chemical, biologic and medicinal applications. Particularly, iron-based nanomaterials are of central importance due to the ‘noble’ features of iron such as its high abundance, low cost and non-toxicity. Herein we report a simple sol–gel method for the synthesis of novel iron–titanium nanocomposite-based material (Fe9TiO15@TiO2). In order to prepare this material, we made a polymeric gel using ferrocene, titanium isopropoxide and THF precursors. The calcination of this gel in air at 500 °C produced Fe-Ti bimetallic nanoparticles-based composite and nano-TiO2 as support. Noteworthy, our methodology provides an excellent control over composition, size and shape of the resulting nanoparticles. The resulted Fe-based material provides a sustainable catalyst for selective synthesis of anilines, which are key intermediates for the synthesis of several chemicals, dyes and materials, via reduction of structurally diverse and functionalized nitroarenes.

show abstract

“…2018. Paper is available on the website: www.idk.org.rs/journal Activated carbon is widely used for different purposes as good adsorbent in the removal of herbicide from water and other purposes [2,3].…”

Section: Introductionmentioning

confidence: 99%

Determination of SRG extra recovery degree from activated carbon used in water environment studies

Kola¹,

Lazo²

2018

Zaštita materijala

View full text Add to dashboard Cite

The purpose of this paper relates to determining the adsorption and recovery degree from activated carbon bags of Sulphorhodamine G Extra (SRG Extra) which can be used as fluorescent tracer in studies of aquatic environments. The effect of the activated carbon is that traces of the used dye are strongly fixed at the surface of the carbon grains. This attribute is used in different water systems studies with fluorescent tracer experiments. Carbon bags are used for the first time in our country in karst system study of Mali me Gropa (2002). Adsorbed tracer can be extracted from carbon bags under the analytical procedures. Based on measurements of SRG Extra fluorescence intensity in standard solutions and extracts we can calculate its adsorption and recovery degree from activated carbon bags. The obtained results prove that extreme low traces of SRG Extra, which cannot be detected directly in the water sample, can be determined in carbon extracts.

show abstract

Cold catalytic recovery of loaded activated carbon using iron oxide-based nanoparticles

Cited by 14 publications

References 22 publications

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation

Facile Synthesis of Iron-Titanate Nanocomposite as a Sustainable Material for Selective Amination of Substitued Nitro-Arenes

Determination of SRG extra recovery degree from activated carbon used in water environment studies

Contact Info

Product

Resources

About

Cold catalytic recovery of loaded activated carbon using iron oxide-based nanoparticles

Cited by 14 publications

References 22 publications

Improvement of (transition metal-modified) activated carbon regeneration by H2O2-promoted catalytic wet air oxidation

Improvement of (transition metal-modified) activated carbon regeneration by H2O2-promoted catalytic wet air oxidation

Facile Synthesis of Iron-Titanate Nanocomposite as a Sustainable Material for Selective Amination of Substitued Nitro-Arenes

Determination of SRG extra recovery degree from activated carbon used in water environment studies

Contact Info

Product

Resources

About

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation

Improvement of (transition metal-modified) activated carbon regeneration by H₂O₂-promoted catalytic wet air oxidation