Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite

Shakir, K.; Ghoneimy, Hussein F.; Elkafrawy, Ahmed Faouzy; Beheir, Sh. G.; Refaat, Mamdoh

doi:10.1016/j.jhazmat.2007.05.037

Cited by 76 publications

(33 citation statements)

References 25 publications

(45 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For these reasons, several technologies have been investigated for the removal of catechol from wastewater and aqueous solutions, including biological methods [11,12], adsorption [13,14], ozonation process [15,16], advanced photo-oxidation process [17] and Fenton and photo-Fenton [9,18].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Electrochemical treatment of aqueous solutions of catechol by various electrochemical advanced oxidation processes: Effect of the process and of operating parameters

Ltaïef

D’Angelo

Ammar

et al. 2017

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Section: Accepted Manuscriptmentioning

confidence: 99%

Electrochemical treatment of aqueous solutions of catechol by various electrochemical advanced oxidation processes: Effect of the process and of operating parameters

Ltaïef

D’Angelo

Ammar

et al. 2017

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…The washing process was repeated several times until the washings were free from bromide ions as indicated by AgNO 3 . The organokaolin was at last separated from water by centrifigation, dried at 80˚C and gently ground with a mortar and pestle to break up aggregate particles [22].…”

Section: Pre-treatment and Organofunctionalization Of Kaolinmentioning

confidence: 99%

“…Consequently this cost problem has led to a search for cheap and efficient alternate materials including clays such as bentonite, sepiolite montmorillonite, alunite, and kaolinite [16]- [19]. In addition, clay minerals can be modified by either impregnation or grafting of organic/inorganic molecules on its surface to improve its properties, for example, bentonite or montmorillonite was modified with various quaternary ammonium cations for the removal of various organic contaminants from water and wastewater [20]- [22]. Kaolinite clays were also modified with tri-polyphosphate [23] [24], and 2-mercaptobenzothiazole impregnated clay surface was used for the removal of some heavy metal ions from water samples [25].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Congo Red from Aqueous Solution Using CTAB-Kaolin from Bechar Algeria

Zenasni¹,

Meroufel²,

Merlin³

et al. 2014

JSEMAT

View full text Add to dashboard Cite

Cetyltrimethylammonium bromide-modified kaolin (CTAB-kaolin or KC) was prepared and tested as an adsorbent for an anionic dye Congo red (CR) removal from aqueous solution in comparison with natural kaolin (K). The effect of various experimental parameters was investigated using a batch adsorption technique. In this manner, the adsorption isotherms and adsorption kinetics of CR on K and KC were examined. The isothermal data could be well described by the Langmuir equation and the dynamical data fit well with the pseudo-second-order kinetic model. The adsorption capacity of modified kaolin KC (24.46 mg/g) was found to be around 4 times higher than that of natural kaolin K (5.94 mg/g). The KC demonstrated the highest adsorption capacity by removing over 98% of CR after ten minutes of contact. These results indicate that CTAB-kaolin could be employed as low-cost alternative to activated carbon in wastewater treatment for the removal of colour which comes from industrial effluents of textile activities, tanning or printing.

show abstract

“…It is also used in chemical laboratories for the detection and determination of many ions. Catechol, therefore, frequently contaminates wastewaters generated by several industries including rubbers, chemical, dye, photographic, pharmaceutical, cosmetics, and oil industry (9)(10)(11)(12).…”

Section: Introductionmentioning

confidence: 99%

“…The metabolites of catechol may start many cancers, and neurodegenerative diseases. Thereforethe United States Environmental Protection Agency (EPA) has ranked phenols the 11th in the list of 126 toxic chemicals which have been designated as priority pollutants, and stringent restrictions have been imposed by local authorities on levels of phenol contaminants in water and wastewater (10).…”

Section: Introductionmentioning

confidence: 99%

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

2013

View full text Add to dashboard Cite

Azolla with different biomass (0.3, 0.6, 0.9, 1.2 g) has been cultured in solutionwhichwas contained 5, 10, 25, and 50 ppm Pyrocatechol. Each exam repeated twice. Samples were collected every 2 days from all of containers. The analytical determination of Pyrocatechol was performed by using DR4000 spectrophotometer by analyzing the color resulting with the wavelength of 600nm. Results:The results showed that Azolla has high ability to remove Pyrocatechol from aqueous solutions. The Pyrocatechol removal was 60-90%. The removal efficiency wasincreasing with decreasing Pyrocatechol concentration, and increasing biomass amount, and vice versa. The removal efficiency was more than 90% when Pyrocatechol concentration was 5 ppm, and amount of biomass was 0.9 gr. Conclusions: It is concluded that Azolla is able to accumulate and remove Pyrocatechol from the aqueous solutions. Since conventional methods of Pyrocatechol removal need high cost and energy, Phytoremediation by Azolla as a natural treatment system can decrease those issues, and it can be a useful and beneficial method for theremoval of Pyrocatechol.

show abstract

Removal of catechol from aqueous solutions by adsorption onto organophilic-bentonite

Cited by 76 publications

References 25 publications

Electrochemical treatment of aqueous solutions of catechol by various electrochemical advanced oxidation processes: Effect of the process and of operating parameters

Electrochemical treatment of aqueous solutions of catechol by various electrochemical advanced oxidation processes: Effect of the process and of operating parameters

Adsorption of Congo Red from Aqueous Solution Using CTAB-Kaolin from Bechar Algeria

Pyrocatechol Removal From Aqueous Solutions by Using Azolla Filiculoides

Contact Info

Product

Resources

About