Investigation of Pb(II) Adsorption Onto Natural and Synthetic Polymers

Yükleniyor...
Küçük Resim

Tarih

2012

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Wiley

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

Adsorption of toxic metal ion Pb(II) onto two different insoluble humic acids (IHAs) obtained from Beysehir (BIHA) and Ermenek (EIHA) low grade lignites and two synthesized terpolymers: styrene-divinylbenzene-methacrylic acid (SDBM) and styrene-divinylbenzene allylmethacrylate (SDBAM) were investigated and compared with commercial activated carbon (AC). The synthesized polymers were characterized by FTIR. Effects of pH (in neutral and acidic range), time, and initial metal concentration on the effectiveness of IHAs and terpolymers were determined. All synthesized adsorbents could adsorb Pb(II) with much higher capacity at half of the retention of AC in acidic medium. The adsorption capacities varied in the range of 5176 mg g-1. The affinity order of polymers in acidic medium for Pb(II) ions was observed as: SDBAM>SDBM>BIHAEIHA>AC. IHAs fit Freundlich model while SDB polymers were fitting Langmuir isotherm. The maximum adsorption capacities in neutral medium were 48 mg g-1 for SDBM and 15 mg g-1 for BIHA. Desorption studies for the polymer of highest performance indicated that about 90% desorption was achieved at 5 h by using EDTA regenerant solution. The polymer can be used repeatedly in Pb(II) adsorption with close capacities to initial use. The higher selectivity of SDBAM to Pb(II) ions in multimetal solution was also indicated in the study.

Açıklama

Anahtar Kelimeler

radical polymerization, adsorption, FT-IR, Pb(II)

Kaynak

Journal of Applied Polymer Science

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

125

Sayı

1

Künye

Ahmetli, G., Yel, E., Deveci, H., Bravo, Z., Bravo, Y., (2012). Investigation of Pb(II) Adsorption Onto Natural and Synthetic Polymers. Journal of Applied Polymer Science, 125(1), 716-724. Doı 10.1002/app.34969