SYNTHESIS AND CHARACTERIZATION OF GRAPHENE OXIDE BASED INVERSE SPINEL NICKEL FERRITES NANOCOMPOSITES FOR THE REMOVAL OF AS(V) (GRAPHENE OXIDE BASED NANOCOMPOSITES FOR THE ADSORPTION REMOVAL OF AS(V))
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): JAE-KYU YANG , JANARDHAN REDDY KODURU , LAKSHMI PRASANNA LINGMADINNE , YOON-YOUNG
Abstract: In order to develop water treatment performance, graphene oxide based inverse spinel nickel ferrites (GONF) and reduced graphene oxide based inverse spinel nickel ferrites (rGONF) nanocomposites were prepared using graphene oxide (GO) and inverse spinel nickel ferrite (NiFe2O4) by thermal precipitation method. The interface interactions of GO and NiFe2O4 were studied. The X-ray diffraction spectrometer (XRD), and Fourier-transform infrared spectroscopy (FT-IR) and BET studies showed that the formation GONF and rGONF. Scanning electron microscopy (SEM) studies observed porous surface morphology of GONF and rGONF. The magnetic studies revealed that the ferromagnetic property of GONF and rGONF, but the later one shows less Ferro magnetic intensity than GONF. It was well performed for the adsorption removal As(V) and subsequently easy magnetic separation from water. The sorption studies revealed that the sorption was rate-limiting pseudo -second-order kinetics with mono layer chimisorption
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-078-1-05
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ACACIA CAVEN POLLEN FROM SOUTH AMERICA. AN USEFUL BIO-INDICATOR OF ENVIRONMENTAL POLLUTION. A HEALTHY FOOD SUPPLEMENT?
Published In: 3RD INTERNATIONAL CONFERENCE ON ADVANCES IN BIO-INFORMATICS AND ENVIRONMENTAL ENGINEERING
Author(s): CRISTINA BARCIA , DANTE MARTINEZ , SOLEDAD CERUTTI , SONIA BARBERIS
Abstract: The aim of this work is to evaluate the mineral and heavy metal contents of Acacia caven (Mol.) Molina pollen, a South American plant which grows in the Northwest of Argentina, for studying its behavior as bio-indicator of environmental pollution and their consequences as dietary supplement. Mineral and heavy metal contents were determined by flame atomic absorption / emission spectrometry (FAAS and FAES, respectively), inductively coupled plasma optical emission spectrometry (ICP-OES) and hydride generation atomic absorption spectrometry (HG-AAS). The obtained results demonstrated that some mineral contents (K, Ca, P, Fe, Mg, Na, Zn and Se) of Acacia caven pollen met the requirements of both, the Food and Nutritional Board (FNB) and the Argentinean Alimentarius Codex (AAC) to be used as a dietary supplement. Nevertheless, some heavy metals analyzed such as Al, Cu, Ni, V, Cr and Cd, exceeded the upper levels (UL) established by FNB and AAC, probably due to environmental contamination.
- Publication Date: 11-Dec-2015
- DOI: 10.15224/978-1-63248-078-1-93
- Views: 0
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