Selective removal of copper(II) from natural waters by nanoporous sorbents functionalized with chelating diamines.
Selective removal of copper(II) from natural waters by nanoporous sorbents functionalized with chelating diamines.
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DOI：
10.1021/es101165c
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发表时间：
2010-08-15
影响因子：
11.4
通讯作者：
Yantasee, Wassana
中科院分区：
文献类型：
--
作者：
Chouyyok, Wilaiwan;Shin, Yongsoon;Davidson, Joseph;Samuels, William D.;Lafemina, Nikki H.;Rutledge, Ryan D.;Fryxell, Glen E.;Sangvanich, Thanapon;Yantasee, Wassana
由于铜的广泛存在和对环境的有毒影响，铜已被美国环境保护署 (EPA) 确定为关注的污染物。评估了三种含有螯合二胺官能团的纳米多孔吸附剂对天然水中 Cu2+ 的吸附能力——介孔载体上的乙二胺功能化自组装单层 (EDA-SAMMS®)、乙二胺功能化活性炭 (AC-CH2-EDA) 和 1,10-菲咯啉功能化介孔碳 (Phen-FMC)。确定了吸附剂的 Cu2+ 吸附的 pH 依赖性、Cu2+ 吸附容量、速率和选择性，并与商业吸附剂（Chelex-100 离子交换树脂和 Darco KB-B 活性炭）进行比较。在 pH 值 6.0–8.0 范围内，所有三种螯合二胺吸附剂均能从河水和海水中出色地去除 Cu2+（约 95–99%）。 EDA-SAMMS 和 AC-CH2-EDA 在海水中表现出快速的 Cu2+ 吸附动力学（分钟）和良好的吸附能力（分别为 26 和 17 mg Cu/g 吸附剂），而 Phen-FMC 相对于其他金属离子（例如 Ca2+、Fe2+、Ni2+ 和 Zn2+）对 Cu2+ 具有优异的选择性，并且能够实现低于 EPA 河流和海洋标准的 Cu2+ 水平 水域。
Copper has been identified as a pollutant of concern by the Environmental Protection Agency (EPA) because of its widespread occurrence and toxic impact in the environment. Three nanoporous sorbents containing chelating diamine functionalities were evaluated for Cu2+ adsorption from natural waters -- ethylenediamine functionalized self-assembled monolayers on mesoporous supports (EDA-SAMMS®), ethylenediamine functionalized activated carbon (AC-CH2-EDA), and 1,10-Phenanthroline functionalized mesoporous carbon (Phen-FMC). The pH dependence of Cu2+ sorption, Cu2+ sorption capacities, rates, and selectivity of the sorbents were determined and compared with those of commercial sorbents (Chelex-100 ion exchange resin and Darco KB-B activated carbon). All three chelating diamine sorbents showed excellent Cu2+ removal (~95–99%) from river water and sea water over the pH range of 6.0–8.0. EDA-SAMMS and AC-CH2-EDA demonstrated rapid Cu2+ sorption kinetics (minutes) and good sorption capacities (26 and 17 mg Cu/g sorbent, respectively) in sea water, while Phen-FMC had excellent selectivity for Cu2+ over other metal ions (e.g. Ca2+, Fe2+, Ni2+, and Zn2+) and was able to achieve Cu levels below the EPA standards for river and sea waters.
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DOI：
10.1046/j.1532-5415.2003.51368.x
发表时间：
2003-08-01
影响因子：
6.3
作者：
Finefrock, AE;Bush, AI;Doraiswamy, PM
通讯作者：
Doraiswamy, PM
影响因子：
13.6
作者：
Liu, Yang;Sun, Changbin;Li, Youzhi
通讯作者：
Li, Youzhi
影响因子：
8.7
作者：
Aydin, Haluk;Buluta, Yasemin;Yerlikaya, Cigdem
通讯作者：
Yerlikaya, Cigdem
影响因子：
2.8
作者：
Samuels, William D.;LaFemina, Nikki H.;Fryxell, Glen E.
通讯作者：
Fryxell, Glen E.
影响因子：
12.8
作者：
Ho, YS;McKay, G
通讯作者：
McKay, G