腐殖质纳米颗粒对镉污染土壤的修复

doi:10.12030/j.cjee.201711218

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室 > 近岸生态与环境实验室

	腐殖质纳米颗粒对镉污染土壤的修复
	毕冬雪 ; 邓亚娟 ; 孟凡德 ; 韦婧 ; 王海龙 ; 袁国栋
刊名	环境工程学报
	2018-01-19
卷号	12 期号:05 页码:1295-1302
关键词	镉腐殖质土壤修复重金属钝化剂重金属淋洗剂
ISSN号	1673-9108
DOI	10.12030/j.cjee.201711218
其他题名	Humic nanoparticles for remediation of Cd- contaminated soils
产权排序	(1)中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室 ; (2)中国科学院大学 ; (3)广东大众农业科技有限公司
英文摘要	Extraneous humic substances could alter the dynamics of Cd in soils. An insoluble humic acid, produced from a leonardite, was used in laboratory experiment as an adsorbent to immobilize Cd in a silt-loam soil near a smelting plant and a Cd-spiked and aged sandy-loam soil, whereas a soluble peat-derived potassium humate was employed as a washing agent to mobilize Cd in, and remove it out of, the contaminated soils. Addition of 2% humic acid could reduce CaCl_2 extractable Cd in a soil (0.103 mg·L~(-1)) by 19.7%. This immobilization effect was greater in sandy-loam soil than in silt-loam soil. Similarly, Cd removed from the contaminated soils increased with washing agent dosage. A single washing at 10 g·L~(-1) of potassium humate removed up to 38.1% of the total Cd in soils. Fourier transform infrared spectroscopic analysis indicated the formation of Cd-carboxyl complex. This study suggests that Cd-contaminated soils can be remediated by humic substances through either an immobilization or mobilization process. The key to the success is to select humic substances with a suitable solubility: water insoluble humic acid for Cd immobilization and water soluble potassium humate for effective removal of Cd out of soils.
语种	中文
CSCD记录号	CSCD:6242010
资助机构	国家重点研发计划#2016YFD0200303 ; 国家自然科学基金项目#41501522 ; 山东省重点研发计划#2016CYJS05A01-1 ; 东莞市第一批引进创新科研团队#2014607101003
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/24731]
专题	烟台海岸带研究所_近岸生态与环境实验室烟台海岸带研究所_污染过程与控制实验室
作者单位	1.中国科学院大学; 2.中国科学院烟台海岸带研究所中国科学院海岸带环境过程与生态修复重点实验室; 3.广东大众农业科技有限公司
推荐引用方式 GB/T 7714	毕冬雪,邓亚娟,孟凡德,等. 腐殖质纳米颗粒对镉污染土壤的修复[J]. 环境工程学报,2018,12(05):1295-1302.
APA	毕冬雪,邓亚娟,孟凡德,韦婧,王海龙,&袁国栋.(2018).腐殖质纳米颗粒对镉污染土壤的修复.环境工程学报,12(05),1295-1302.
MLA	毕冬雪,et al."腐殖质纳米颗粒对镉污染土壤的修复".环境工程学报 12.05(2018):1295-1302.