NDLI: Arsenic immobilization in the contaminated soil using poorly crystalline Fe-oxyhydroxy sulfate

Content Provider	Springer Nature Link
Author	Yang, Zhihui Liu, Lin Chai, Liyuan Liao, Yingping Yao, Wenbin Xiao, Ruiyang
Copyright Year	2015
Abstract	A low crystalline Fe-oxyhydroxy sulfate (FeOS) was used to immobilize arsenic (As) in soils in this study. The effects of FeOS amount, treatment time and soil moisture on As immobilization were investigated. The results showed that water-soluble and NaHCO$_{3}$-extractable As were immobilized by 53.4–99.8 and 13.8–73.3 % respectively, with 1–10 % of FeOS addition. The highest immobilization of water-soluble (98.5 %) and NaHCO$_{3}$-extractable arsenic (47.2 %) was achieved under condition of 4 % of FeOS and 80 % of soil moisture. Further, more amounts of FeOS addition resulted in less time requirement for As immobilization. Sequential chemical extraction experiment revealed that easily mobile arsenic phase was transferred to less mobile phase. The FeOS-bonded As may play a significant role in arsenic immobilization. Under leaching with simulated acid rain at 60 times pore volumes, accumulation amount of As release from untreated soil and soil amended with FeOS were 98.4 and 1.2 mg, respectively, which correspond to 7.69 and 0.09 % of total As amounts in soil. The result showed that the low crystalline FeOS can be used as a suitable additive for arsenic immobilization in soils.
Starting Page	12624
Ending Page	12632
Page Count	9
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	22
Issue Number	16
e-ISSN	16147499
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-04-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arsenic-contaminated soil Arsenic immobilization Low crystalline Fe-oxyhydroxy sulfate Sequential chemical extraction Environment Environmental Chemistry Ecotoxicology Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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