首页|In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal

In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
  • 维普
Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar strength.Introduction of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application.

Composite materialsChemical synthesisKineticsAdsorptionUltrasonics

Bojana Nedi(c) Vasiljevi(c)、Milena Obradovi(c)、Danica Bajuk-Bogdanovi(c)、Maja Milojevi(c)-Raki(c)、Zoran Jovanovi(c)、Nemanja Gavrilov、Ivanka Holclajtner-Antunovi(c)

展开 >

Faculty of Physical Chemistry, University of Belgrade, Belgrade 11158, Serbia

Laboratory of Physics, Vin(c)a Institute of Nuclear Sciences, University of Belgrade, Belgrade 11001, Serbia

supported by the Ministry of Education,Science and Technological Development of the Republic of Serbiasupported by the Ministry of Education,Science and Technological Development of the Republic of Serbiasupported by the Ministry of Education,Science and Technological Development of the Republic of Serbia

OI172018OI172043III45006

2019

环境科学学报(英文版)
中科院生态环境研究中心

环境科学学报(英文版)

CSTPCDCSCDSCIEI
影响因子：0.862
ISSN：1001-0742
年,卷(期)：2019.81(7)
  • 1