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 language | English |
|---|---|
| Pages (from-to) | 850-858 |
| Number of pages | 9 |
| Journal | Water Research |
| Volume | 47 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 1 2013 |
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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
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 journal › Article
}
TY - JOUR
T1 - Ambient iron-mediated aeration (IMA) for water reuse
AU - Deng, Yang
AU - Englehardt, James Douglas
AU - Abdul-Aziz, Samer
AU - Bataille, Tristan
AU - Cueto, Josenrique
AU - De Leon, Omar
AU - Wright, Mary E.
AU - Gardinali, Piero
AU - Narayanan, Aarthi
AU - Polar, Jose
AU - Tomoyuki, Shibata
PY - 2013/2/1
Y1 - 2013/2/1
N2 - 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.
AB - 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.
KW - Adsorption
KW - Coagulation
KW - Dissolved oxygen
KW - Iron
KW - Oxidation
KW - Water reuse
UR - http://www.scopus.com/inward/record.url?scp=84871497395&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84871497395&partnerID=8YFLogxK
U2 - 10.1016/j.watres.2012.11.005
DO - 10.1016/j.watres.2012.11.005
M3 - Article
VL - 47
SP - 850
EP - 858
JO - Water Research
JF - Water Research
SN - 0043-1354
IS - 2
ER -