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题名: 改良剂对土壤Cu形态转化及其生物可给性的影响
作者: 李季; 黄益宗; 胡莹; 金姝兰; 保琼莉; 王斐; 向猛; 李晓敏
刊名: 环境工程学报
出版日期: 2016
卷号: 10, 期号:4, 页码:2057-2063
关键词: 土壤 ; 改良剂 ; 化学形态 ; 生物可给性
其他题名: Effect of several amendments on transformation of Cu speciation and bio-accessibility in contaminated soil
中文摘要: 通过室内土壤培养实验,研究添加9种不同改良剂(沸石、石灰、磷矿粉、油菜秸秆、堆肥、赤泥、生物调理剂、生物炭和骨炭)对污染土壤Cu化学形态和生物可给性的影响。培养2个月,除堆肥处理外,添加5%的其他8种改良剂均显著地提高了土壤的pH值,提高效果为石灰>生物炭>赤泥>生物调理剂>油菜秸秆=骨炭>磷矿粉>沸石。培养2个月后,添加所有改良剂均显著地降低了土壤中酸可提取态Cu的含量,生物调理剂、生物炭和骨炭处理效果最为显著,分别比对照下降28%、18.1%和33.7%。添加不同的改良剂对土壤Cu的生物可给性也有影响。培养1个月,石灰、生物炭和骨炭处理分别导致土壤中生物可给性Cu含量比对照降低9.8%、10.5%和18.3%;培养2个月,赤泥、生物炭和堆肥处理分别导致生物可给性Cu含量比对照降低13.2%、17.6%和18.6%。研究表明,生物炭和骨炭可作为Cu污染土壤的理想改良剂。
部门归属: 土壤环境科学实验室
英文摘要: The effects of the addition of 5% zeolite,limestone,phosphate rock,rape straw,compost,red mud,modifying agent,biochar,and bone char on the fractionation and bio-accessibility of Cu in soil were determined in a batch soil column incubation experiment.Five percent amendments of all substances tested,except compost,increased the soil pH after 2 months of incubation,in the following order:limestone>biochar>red mud>modifying agent>rape straw=bone char>phosphate rock>zeolite.All treatments significantly decreased the concentration of HOAc-soluble Cu after 2 months of incubation.Compared with the control,the concentration of HOAc-soluble Cu decreased by 28%,18.1%,and 33.7% for treatments with the modifying agent,biochar,and bone stone,respectively.Different amendments had different effects on the bio-accessibility of Cu.After 1 month of incubation,treatments of limestone,biochar,and bone char significantly decreased the concentration of bio-accessible Cu by 9.8%,10.5%,and 18.3%,respectively.After 2 month of incubation,the treatments red mud,biochar,and compost significantly decreased the concentration of bio-accessible Cu by 13.2%,17.6%,and 18.6%,respectively.In conclusion,biochar and bone char effectively immobilized Cu in soil.
收录类别: CSCD
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36722
Appears in Collections:土壤环境科学实验室_期刊论文

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Recommended Citation:
李季,黄益宗,胡莹,等. 改良剂对土壤Cu形态转化及其生物可给性的影响[J]. 环境工程学报,2016,10(4):2057-2063.
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