Ambient iron-mediated aeration (IMA) for water reuse

Yang Deng, James Douglas Englehardt, Samer Abdul-Aziz, Tristan Bataille, Josenrique Cueto, Omar De Leon, Mary E. Wright, Piero Gardinali, Aarthi Narayanan, Jose Polar, Shibata Tomoyuki

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Global water shortages caused by rapidly expanding population, escalating water consumption, and dwindling water reserves have rendered water reuse a strategically significant approach to meet current and future water demand. This study is the first to our knowledge to evaluate the technical feasibility of iron-mediated aeration (IMA), an innovative, potentially economical, holistic, oxidizing co-precipitation process operating at room temperature, atmospheric pressure, and neutral pH, for water reuse. In the IMA process, dissolved oxygen (O2) was continuously activated by zero-valent iron (Fe0) to produce reactive oxygen species (ROS) at ambient pH, temperature, and pressure. Concurrently, iron sludge was generated as a result of iron corrosion. Bench-scale tests were conducted to study the performance of IMA for treatment of secondary effluent, natural surface water, and simulated contaminated water. The following removal efficiencies were achieved: 82.2% glyoxylic acid, ∼100% formaldehyde as an oxidation product of glyoxylic acid, 94% of Ca2+ and associated alkalinity, 44% of chemical oxygen demand (COD), 26% of electrical conductivity (EC), 98% of di-n-butyl phthalate (DBP), 80% of 17β-estradiol (E2), 45% of total nitrogen (TN), 96% of total phosphorus (TP), 99.8% of total Cr, >90% of total Ni, 99% of color, 3.2 log removal of total coliform, and 2.4 log removal of E. Coli. Removal was attributed principally to chemical oxidation, precipitation, co-precipitation, coagulation, adsorption, and air stripping concurrently occurring during the IMA treatment. Results suggest that IMA is a promising treatment technology for water reuse.

Original languageEnglish
Pages (from-to)850-858
Number of pages9
JournalWater Research
Volume47
Issue number2
DOIs
StatePublished - Feb 1 2013

Fingerprint

Water aeration
aeration
Iron
iron
Water
Coprecipitation
oxidation
Oxidation
Acids
water reuse
acid
Chemical oxygen demand
phthalate
Dissolved oxygen
Alkalinity
Coagulation
water demand
Surface waters
formaldehyde
Formaldehyde

Keywords

  • Adsorption
  • Coagulation
  • Dissolved oxygen
  • Iron
  • Oxidation
  • Water reuse

ASJC Scopus subject areas

  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Ecological Modeling

Cite this

Deng, Y., Englehardt, J. D., Abdul-Aziz, S., Bataille, T., Cueto, J., De Leon, O., ... Tomoyuki, S. (2013). Ambient iron-mediated aeration (IMA) for water reuse. Water Research, 47(2), 850-858. https://doi.org/10.1016/j.watres.2012.11.005

Ambient iron-mediated aeration (IMA) for water reuse. / Deng, Yang; Englehardt, James Douglas; Abdul-Aziz, Samer; Bataille, Tristan; Cueto, Josenrique; De Leon, Omar; Wright, Mary E.; Gardinali, Piero; Narayanan, Aarthi; Polar, Jose; Tomoyuki, Shibata.

In: Water Research, Vol. 47, No. 2, 01.02.2013, p. 850-858.

Research output: Contribution to journalArticle

Deng, Y, Englehardt, JD, Abdul-Aziz, S, Bataille, T, Cueto, J, De Leon, O, Wright, ME, Gardinali, P, Narayanan, A, Polar, J & Tomoyuki, S 2013, 'Ambient iron-mediated aeration (IMA) for water reuse', Water Research, vol. 47, no. 2, pp. 850-858. https://doi.org/10.1016/j.watres.2012.11.005
Deng Y, Englehardt JD, Abdul-Aziz S, Bataille T, Cueto J, De Leon O et al. Ambient iron-mediated aeration (IMA) for water reuse. Water Research. 2013 Feb 1;47(2):850-858. https://doi.org/10.1016/j.watres.2012.11.005
Deng, Yang ; Englehardt, James Douglas ; Abdul-Aziz, Samer ; Bataille, Tristan ; Cueto, Josenrique ; De Leon, Omar ; Wright, Mary E. ; Gardinali, Piero ; Narayanan, Aarthi ; Polar, Jose ; Tomoyuki, Shibata. / Ambient iron-mediated aeration (IMA) for water reuse. In: Water Research. 2013 ; Vol. 47, No. 2. pp. 850-858.
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