TY - JOUR
T1 - In situ stabilization of arsenic and metal-contaminated agricultural soil using industrial by-products
AU - Lee, Sang Hwan
AU - Kim, Eui Young
AU - Park, Hyun
AU - Yun, Jihoon
AU - Kim, Jeong Gyu
PY - 2011/2/15
Y1 - 2011/2/15
N2 - The usefulness of limestone, red mud, and furnace slag on the in situ stabilization of arsenic (As) and heavy metals was evaluated relative to different endpoints (microorganisms, plants, and humans). Individually or combined treatment of iron-rich amendments were effectively lowered the availability of trace elements. Compared to control soil, Ca(NO3)2-eatractable As, Cd, Pb, and Zn was reduced by 58%, 98%, 98%, and 99%, respectively, by combined treatment of limestone and red mud. The decreased availability of trace elements was accompanied by increased microbial activity (respiration, glucose mineralization, and soil enzyme activity) and decreased plant uptake of trace elements. Compared to non amended control soil, only 13%, 28%, 47%, and 12% of the As, Cd, Pb, and Zn, respectively, detected in combined treatment of limestone and red mud. These results suggest that iron-rich industrial by-products could be used for remediation of soils co-contaminated with metals and arsenic.
AB - The usefulness of limestone, red mud, and furnace slag on the in situ stabilization of arsenic (As) and heavy metals was evaluated relative to different endpoints (microorganisms, plants, and humans). Individually or combined treatment of iron-rich amendments were effectively lowered the availability of trace elements. Compared to control soil, Ca(NO3)2-eatractable As, Cd, Pb, and Zn was reduced by 58%, 98%, 98%, and 99%, respectively, by combined treatment of limestone and red mud. The decreased availability of trace elements was accompanied by increased microbial activity (respiration, glucose mineralization, and soil enzyme activity) and decreased plant uptake of trace elements. Compared to non amended control soil, only 13%, 28%, 47%, and 12% of the As, Cd, Pb, and Zn, respectively, detected in combined treatment of limestone and red mud. These results suggest that iron-rich industrial by-products could be used for remediation of soils co-contaminated with metals and arsenic.
KW - Amendments
KW - Arsenic
KW - Heavy metals
KW - In situ stabilization
KW - Phytoavailability
UR - http://www.scopus.com/inward/record.url?scp=79551578068&partnerID=8YFLogxK
U2 - 10.1016/j.geoderma.2010.11.008
DO - 10.1016/j.geoderma.2010.11.008
M3 - Article
AN - SCOPUS:79551578068
SN - 0016-7061
VL - 161
SP - 1
EP - 7
JO - Geoderma
JF - Geoderma
IS - 1-2
ER -