Evaluation of ferrihydrite as amendment to restore an arsenic-polluted mine soil

被引：23
作者：
Abad-Valle, P. [1 ]
Alvarez-Ayuso, E. [1 ]
Murciego, A. [2 ]
机构：
[1] IRNASA CSIC, Dept Environm Geochem, Salamanca 37008, Spain
[2] Univ Salamanca, Dept Geol, E-37008 Salamanca, Spain
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2015年 / 22卷 / 09期
关键词：
Trace elements; Soil pollution; Hydrous Fe oxide; Stabilization; Microbial functionality; Basal soil respiration; Dehydrogenase activity; Soil restoration; HEAVY-METAL CONTAMINATION; RESPONSE MODEL APPROACH; PHOSPHATASE-ACTIVITY; TRACE-ELEMENTS; SHORT-TERM; ARYLSULFATASE ACTIVITY; MICROBIAL BIOMASS; ENZYME-ACTIVITIES; AIDED PHYTOSTABILIZATION; 2-LINE FERRIHYDRITE;
D O I：
10.1007/s11356-014-3868-6
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effectiveness of ferrihydrite as amendment to restore the soil habitat functioning of a soil polluted with As by mining activities was evaluated. Its influence on As mobility and phytoavailability was also assessed. Soil treated with increasing amendment doses (0, 1, 2, and 5 %) were analyzed for soil microbiological parameters such as basal soil respiration and dehydrogenase, beta-glucosidase, urease, acid and alkaline phosphatase, and arylsulfatase activities. Batch leaching tests and plant growth experiments using ryegrass and alfalfa plants were performed. The treatment with ferrihydrite was effective to reduce As mobility and plant As uptake, translocation, and accumulation. Likewise, the soil microbiological status was generally improved as derived from basal soil respiration and dehydrogenase and acid and alkaline phosphatase activities, which showed increases up to 85, 45, 11, and 47 %, respectively, at a ferrihydrite addition rate of 5 %.
引用
收藏
页码：6778 / 6788
页数：11
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