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Title:

Efficient nitrate adsorption from water by aluminum powder. Kinetic, equilibrium and influence of anion competition studies

Group publication title:

Environment Protection Engineering

Creator:

Fakhri, Yadollah ; Kakavandi, Babak ; Safaei, Zahra ; Asadi, Anvar ; Mohsen Mohseni, Seyed ; Golestanifar, Hafez

Contributor:

Majewska-Nowak, Katarzyna Maria. Redakcja

Subject and Keywords:

ochrona środowiska ; inżynieria środowiska ; czasopisma

Description:

Environment Protection Engineering. Vol. 44, 2018, nr 3, s. 19-31

Abstrakt:

The feasibility of aluminum powder (with particle size of 75–150 μm) for nitrate removal from aqueous solutions has been investigated. Adsorption was examined in function of initial nitrate concentration, contact time, pH and influence of other interfering anions. Maximum nitrate removal occurred at equilibrium pH of 10. The kinetics of adsorption of nitrate ions was discussed based on three kinetic models, namely: the pseudo-first order, the pseudo-second order and the intraparticle diffusion model. The experimental data fitted the pseudo-second order kinetic model very well; the rate constant was 410–4 g/ (mg·min) at the concentration of 3 NO of 100 mg/dm3. The adsorption data followed both Langmuir (R2 = 0.808) and Freundlich (R2 = 0.865) isotherms probably due to the real heterogeneous nature of the surface sites involved in the nitrate uptake. The maximum sorption capacity of aluminum powder for nitrate adsorption was found to be ca. 45.2 mg/g at room temperature. The results indicate that aluminum powder is an interesting alternative for nitrate removal from the water.

Publisher:

Oficyna Wydawnicza Politechniki Wrocławskiej

Place of publication:

Wrocław

Date:

2018

Resource Type:

artykuł

Resource Identifier:

doi:10.5277/epe180302

Source:

<sygn. PWr A4232I> ; click here to follow the link ; click here to follow the link

Language:

eng

Relation:

Environment Protection Engineering ; Environment Protection Engineering. Vol. 44, 2018 ; Environment Protection Engineering. Vol. 44, 2018, nr 3

Rights:

Wszystkie prawa zastrzeżone (Copyright)

Access Rights:

Dla wszystkich w zakresie dozwolonego użytku

Location:

Politechnika Wrocławska