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Containment Reduction Ability of Iron-Oxides Towards 4-Nonyphenol

Undergraduate #208
Discipline: Chemistry and Chemical Sciences
Subcategory: Water

Kristiana Watson - Arkansas State University
Co-Author(s): Saeed Al-Ahmary, Hashim Ali, Ronnie Ruyonga, and Bryant Fong, Arkansas State University, Jonesboro, AR



The adsorption of Nonylphenol onto the surface of iron minerals was studied here using spectroscopic and computational methods. Adsorption characteristics of prominent peaks from suspended and adsorbed Nonylphenol on the surface iron minerals were studied by ATR-FTIR spectroscopy. The adsorption characteristics were then used to test the feasibility of using iron minerals to naturally removal these persistent emerging organic contaminants from polluted waters. Three types of iron oxides were studied. Goethite, micro-hematite and nano-hematite were used as adsorption/ removal agents to investigate their ability to removal Nonylphenol from suspended contaminated solution. The highest ‘removal capability’ was observed when nano-hematite was used, which removed about 80% of the Nonylphenol from suspended solution. Micro-Hematite and goethite each removed approximately 60% and 50% of NP respectively. Since nano-hematite had the largest measured surface area, we could relate that the adsorption/removal capability of iron oxides related strongly to its surface area (or surface sites) available for adsorption.

Funder Acknowledgement(s): Faculty Research Awards (FRA); The Experimental Learning Fellowship (ELF); NSF.

Faculty Advisor: Hashim Ali, hali@astate.edu

Role: The part of the research I was responsible for completely was the various reactions of the Iron Oxides and the Nonylphenol and conductiong the ATR-FTIR spectroscopy scans of the reaction that too place.

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This material is based upon work supported by the National Science Foundation (NSF) under Grant No. DUE-1930047. Any opinions, findings, interpretations, conclusions or recommendations expressed in this material are those of its authors and do not represent the views of the AAAS Board of Directors, the Council of AAAS, AAAS’ membership or the National Science Foundation.

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