Fast removal of high quantities of toxic arsenate via cationic p(APTMACl) microgels.

Abstract:

:Hydrogels are resourceful materials and can be prepared in different morphology, size, surface charge and porosity adopting different polymerization techniques and reaction conditions. The cationic poly(3-acrylamidopropyl)trimethylammonium chloride (p(APTMACl)) microgels were synthesized by photo-initiated inverse suspension polymerization technique. These microgels were utilized as absorbents for the removal of toxic arsenate (As) from different aqueous environments. The experimental parameters affecting absorption efficiency were investigated, and it was demonstrated that these types of microgels are highly efficient in removing arsenate anions from different aqueous environments compared to the previously reported bulk hydrogel, and cryogel of the same material. A removal efficiency of approximately 97.25% was obtained by immersing 0.5 g microgel in 250 ppm 100 mL solution of arsenate anions for 60 min. Both Langmuir and Freundlich adsorption isotherms were applied to adsorption of arsenate anions by p(APTMACl) microgels, and the Langmuir isotherm was a better representation of the adsorption of arsenate with a high value of R(2) (0.9982). Furthermore, mag-p(APTMACl) microgels were synthesized for the adsorption of arsenate anions to provide easy removal of the microgel composite by using an externally applied magnetic field. Furthermore, re-usability of the p(APTMACl) microgels was also investigated for the adsorption of arsenate anions.

journal_name

J Environ Manage

authors

Rehman SU,Siddiq M,Al-Lohedan H,Aktas N,Sahiner M,Demirci S,Sahiner N

doi

10.1016/j.jenvman.2015.10.026

subject

Has Abstract

pub_date

2016-01-15 00:00:00

pages

217-26

eissn

0301-4797

issn

1095-8630

pii

S0301-4797(15)30325-X

journal_volume

166

pub_type

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