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

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Аутори
Markovski, Jasmina
Đokić, Veljko
Milosavljević, Milutin
Mitrić, Miodrag
Perić-Grujić, Aleksandra
Onjia, Antonije
Marinković, Aleksandar
article (publishedVersion)
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Апстракт
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 / Ultrasound
Извор:
Ultrasonics Sonochemistry, 2014, 21, 2, 790-801
Издавач:
  • 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

WoS: 000329771500044

Scopus: 2-s2.0-84888133525
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URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2780
Колекције
  • Radovi istraživača / Researchers’ publications (TMF)
  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
Институција/група
Tehnološko-metalurški fakultet

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