Freeze-drying fabrication of attapulgite-based absorbents for selective removal of heavy metal ions and organics from water

doi:10.1201/b19126-460

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	Freeze-drying fabrication of attapulgite-based absorbents for selective removal of heavy metal ions and organics from water
	Liang, Wei Dong; Wang, Rui; Wang, Yuan Rui; Wu, Ye
	2015
会议日期	May 30, 2015 - May 31, 2015
会议地点	Guangzhou, China
关键词	Adsorbents Contact angle Fluorine compounds Heavy metals Low temperature drying Metal ions Oil spills Pore size Silicones Water absorption Wetting Absorption capacity Absorption performance Environmental issues Freeze drying method Low surface energy Polyvinylidene fluorides Surface wettability Water contact angle
卷号	3
DOI	10.1201/b19126-460
页码	2381-2384
英文摘要	Attapulgite (ATP)-based absorbent was synthesized by freeze-drying method and thermolysis treatment. Compared with natural ATP, the absorbent (named as AEG) prepared from ATP/polyethylene glycol composite shows better absorption performance for metal ions. By modification with polyvinylidene fluoride and polydimethylsiloxane, the treated AEG shows excellent surface wettability with a water contact angle of 150.3°. The changes in surface wettability of treated AEG should be attributed to the mixture of low-surface-energy polyvinylidene fluoride and deposition of a hydrophobic silicon coating on AEG surface. Due to the large pore size and excellent surface wettability, the resulting ATP-based absorbent shows high selectivity and absorption capacity for removal of oils and organics from water, which may have great potentials for water treatment, oil spills cleanup, environmental issues, and so on. © 2015 Taylor & Francis Group, London.
会议录	Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015
会议录出版者	CRC Press/Balkema
语种	英语
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117370]
专题	招标中心
作者单位	Department of Applied Chemistry, College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, China
推荐引用方式 GB/T 7714	Liang, Wei Dong,Wang, Rui,Wang, Yuan Rui,et al. Freeze-drying fabrication of attapulgite-based absorbents for selective removal of heavy metal ions and organics from water[C]. 见:. Guangzhou, China. May 30, 2015 - May 31, 2015.