Ultrasonic assisted arsenate adsorption on solvothermally synthesized calcite modified by goethite, alpha-MnO2 and goethite/alpha-MnO2

2014
Аутори
Markovski, Jasmina
Đokić, Veljko

Milosavljević, Milutin
Mitrić, Miodrag

Perić-Grujić, Aleksandra

Onjia, Antonije

Marinković, Aleksandar

article (publishedVersion)

Метаподаци
Приказ свих података о документуАпстракт
A highly porous calcium carbonate (calcite; sorbent 1) was used as a support for modification with alpha-FeOOH (calcite/goethite; sorbent 2), alpha-MnO2 (calcite/alpha-MnO2; sorbent 3) and alpha-FeOOH/alpha-MnO2 (calcite/goethite/alpha-MnO2; sorbent 4) in order to obtain a cheap hybrid materials for simple and effective arsenate removal from aqueous solutions. The adsorption ability of synthesized adsorbents was studied as a function of functionalization methods, pH, contact time, temperature and ultrasonic treatment. Comparison of the adsorptive effectiveness of synthesized adsorbents for arsenate removal, under ultrasound treatment and classical stirring method, has shown better performance of the former one reaching maximum adsorption capacities of 1.73, 21.00, 10.36 and 41.94 mg g(-1), for sorbents 1-4, respectively. Visual MINTEQ equilibrium speciation modeling was used for prediction of pH and interfering ion influences on arsenate adsorption.
Кључне речи:
Arsenate / Calcite / Goethite / alpha-MnO2 / Adsorption / UltrasoundИзвор:
Ultrasonics Sonochemistry, 2014, 21, 2, 790-801Издавач:
- Elsevier, Amsterdam
Финансирање / пројекти:
- info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/43009/RS// (RS-43009)
- info:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172007/RS// (RS-172007)
DOI: 10.1016/j.ultsonch.2013.10.006
ISSN: 1350-4177
PubMed: 24210695