An organoclay formula for the slow release of soluble compounds

doi:10.1016/j.clay.2014.04.005

	An organoclay formula for the slow release of soluble compounds
	Yuan, Guodong
发表期刊	APPLIED CLAY SCIENCE
	2014-10-01
卷号	100 期号:0 页码:84-87
关键词	Organoclays Nanoclays Slow-release Formula Fertilizer Dcd
DOI	10.1016/j.clay.2014.04.005
英文摘要	Slow-release formulations have been developed to enhance the effective use of active ingredients. In the case of fertilizers the formulations reduce nutrient leaching and greenhouse gas emissions. While polymer-coating is the dominant technology in producing slow-release fertilizers there is a demand for alternative options for different usages. To this end, a commercially available organoclay, with a basal spacing of 3.67 nm, was used as matrix to produce pellets of CuSO4 and dicyandiamide (DCD) of different sizes by a die set and hand press. Both CuSO4 and DCD pellets showed a good slow-release performance in dissolution tests. Large pellets (1.2 cm in diameter) of CuSO4 had a better performance in slow-release than small ones (0.7 cm). For DCD pellets (0.7 cm in diameter) it took 6 days for a complete dissolution. The slow-release effect is probably due to the hydrophobic nature and high aspect ratio of the organoclay. The former makes soluble compounds between organoclay particles less susceptible to dissolution in water, whereas the latter hinders the dissolution of solutes inside a pellet by making their diffusion passage tortuous. The organoclay formulation is easy to make, and the rate of solute release can be adjusted by changing pellet size. (C) 2014 Elsevier B.V. All rights reserved.
文章类型	Article
收录类别	SCI
语种	英语
研究领域[WOS]	Chemistry ; Materials Science ; Mineralogy
WOS记录号	WOS:000342956400011
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/7371
专题	中国科学院海岸带环境过程与生态修复重点实验室
作者单位	Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Guodong. An organoclay formula for the slow release of soluble compounds[J]. APPLIED CLAY SCIENCE,2014,100(0):84-87.
APA	Yuan, Guodong.(2014).An organoclay formula for the slow release of soluble compounds.APPLIED CLAY SCIENCE,100(0),84-87.
MLA	Yuan, Guodong."An organoclay formula for the slow release of soluble compounds".APPLIED CLAY SCIENCE 100.0(2014):84-87.

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