Abstracts Book - IMRC 2018

• SWMC-O025 Invited Talk
FERRATES: EMERGING ADVANCED MATERIALS IN ENERGY,
ENVIRONMENTAL, BIOMEDICAL, AND INDUSTRIAL SYNTHESIS
APPLICATIONS
Virender Sharma 1
1 Texas A&M University, Environmental and Occupational Health, School of Public Health,
United States.
Iron in +6 oxidation states of iron, called ferrate (Fe VI O4 2- ), is emerging
environmental-friendly nanomaterial , which can play role in processes like oxygen
generation from water, synthesis of organic molecules with selectivity, and
treatment of water and wastewater, which are also sustainable. The theme of the
presentation will be to demonstrate the green nature of ferrate and how different
processes are affected by the parameters. The main focus of the presentation will
be to demonstrate ferrate technology in eliminating antibiotics (sulfonamides,
trimethoprim, and fluoroquinolones). Reaction kinetics and oxidized products will
be shown. Transformation products do not possess antibiotic activities. A recent
research showed that reactivity of ferrate can be tuned to accelerate the
transformation of organic compounds in water. For example, compounds, which
are oxidized by ferrate in minutes and hours, can be oxidized in 30 seconds. These
latest results have wide range of implication ranging in greener synthesis of drug
molecules to rapid purification of water and wastewater. Additionally, ferrate that
has remarkable efficiency in removing toxic metals by the ferric oxide nanoparticles,
generated from ferrate. Examples will be shown how these ferric oxide
nanoparticles can capture arsenate in water to reduce to levels of arsenic to nondetectable
after ferrate treatment. Examples of other toxic metals and phosphate
will also be shown. Another recent study is on the detoxification of toxins by ferrate
in water. Presentation will include how ferrate detoxifies microcystin-LR in
water. Microcystin-LR is a common toxin that exists in water worldwide. Other
emerging problem in water treatment is the use of disinfectants to prevent diseases
associated with waterborne pathogens. Ferrate can inactivate a wide range of
bacteria and virus without generating toxic DBPs. More importantly, ferrate can also
be used as a pre-oxidant in order to decrease levels of DBPs in chlorination of
water. Finally, very recent results on the activation of ferrate to oxidize organic
contaminants by adding simple acids without significantly changing the pH (or
under neutral pH condition) will be presented.
Keywords: Iron nanomaterials, ferrate, purification
Presenting authors email: vsharma@sph.tamhsc.edu