Abstract
Due to recent changes in regulatory discharge limits, selenium removal from electric utility wastewaters is becoming an important issue. In this work, Mg-Al-CO3 layered double hydroxide (LDH) in granular form was evaluated for treatment of selenium-containing groundwater in small scale column tests. The LDH material showed good capacity for removing selenate from groundwaters that contained very high levels of sulfate and total dissolved solids. Column tests were investigated using the granular LDH to treat groundwater containing trace levels of selenium <2 ppb. Removal of sulfate using chemical pretreatment of the groundwater resulted in about 3× higher selenium loading onto the granular LDH. The structural changes in the media after exhaustion and analysis of the effluent water from the column test were also studied to better understand the species removed by the LDH. These results show that the LDH is a promising sorbent for removing selenium from wastewaters with high levels of sulfate and background species.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2458-2465 |
| Number of pages | 8 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 56 |
| Issue number | 9 |
| DOIs | |
| State | Published - Mar 8 2017 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering
Cite this
Selenium Removal from Sulfate-Containing Groundwater Using Granular Layered Double Hydroxide Materials. / Li, Man; Farmen, Lisa M.; Chan, Candace.
In: Industrial and Engineering Chemistry Research, Vol. 56, No. 9, 08.03.2017, p. 2458-2465.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selenium Removal from Sulfate-Containing Groundwater Using Granular Layered Double Hydroxide Materials
AU - Li, Man
AU - Farmen, Lisa M.
AU - Chan, Candace
PY - 2017/3/8
Y1 - 2017/3/8
N2 - Due to recent changes in regulatory discharge limits, selenium removal from electric utility wastewaters is becoming an important issue. In this work, Mg-Al-CO3 layered double hydroxide (LDH) in granular form was evaluated for treatment of selenium-containing groundwater in small scale column tests. The LDH material showed good capacity for removing selenate from groundwaters that contained very high levels of sulfate and total dissolved solids. Column tests were investigated using the granular LDH to treat groundwater containing trace levels of selenium <2 ppb. Removal of sulfate using chemical pretreatment of the groundwater resulted in about 3× higher selenium loading onto the granular LDH. The structural changes in the media after exhaustion and analysis of the effluent water from the column test were also studied to better understand the species removed by the LDH. These results show that the LDH is a promising sorbent for removing selenium from wastewaters with high levels of sulfate and background species.
AB - Due to recent changes in regulatory discharge limits, selenium removal from electric utility wastewaters is becoming an important issue. In this work, Mg-Al-CO3 layered double hydroxide (LDH) in granular form was evaluated for treatment of selenium-containing groundwater in small scale column tests. The LDH material showed good capacity for removing selenate from groundwaters that contained very high levels of sulfate and total dissolved solids. Column tests were investigated using the granular LDH to treat groundwater containing trace levels of selenium <2 ppb. Removal of sulfate using chemical pretreatment of the groundwater resulted in about 3× higher selenium loading onto the granular LDH. The structural changes in the media after exhaustion and analysis of the effluent water from the column test were also studied to better understand the species removed by the LDH. These results show that the LDH is a promising sorbent for removing selenium from wastewaters with high levels of sulfate and background species.
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UR - http://www.scopus.com/inward/citedby.url?scp=85027279150&partnerID=8YFLogxK
U2 - 10.1021/acs.iecr.6b04461
DO - 10.1021/acs.iecr.6b04461
M3 - Article
AN - SCOPUS:85027279150
VL - 56
SP - 2458
EP - 2465
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 9
ER -