Enhancing Lead Adsorption Capacity by Controlling the Chain Length of Alkyl Amine Grafted Lignin
Enhancing Lead Adsorption Capacity by Controlling the Chain Length of Alkyl Amine Grafted Lignin
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DOI：
10.15376/biores.10.2.2425-2432
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发表时间：
2015-03
期刊：
影响因子：
1.5
通讯作者：
Zhili Li;Xiaoxiao Duo;K. Yan;Y. Ge
中科院分区：
文献类型：
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作者：
Zhili Li;Xiaoxiao Duo;K. Yan;Y. Ge
木质素对铅的吸附容量可以通过改变烷基的链长来控制，将胺连接到木质素表面，从C2(乙基)到C18(十八烷基)。改变链长对胺基团对木质素吸附铅离子的贡献有很大影响。随着链长增加到丁基(C4)，吸附容量增加了105.0%；然而，更长的链长，直到C18，并没有提供额外的好处，在某些情况下，甚至阻碍了木质素的吸附能力。短链烷基(C4)增强了有益胺对金属离子吸附的贡献，这是由于烷基的高效诱导作用所致。
The adsorption capacity of lignin for lead can be controlled by varying the chain length of alkyl, attaching the amine to the lignin surface from C2 (ethyl) to C18 (octadecyl). Altering the chain length had a strong effect on the contribution of amine groups in the adsorption of lead ions by lignin. The adsorption capacity increased 105.0% as the chain length increased to butyl (C4); however, further chain lengths, up to C18, provided no additional benefit, and in some cases even hindered the adsorption capacity of lignin. A short-chain alkyl (C4) group enhanced the beneficial amine contributions for metal ion adsorption, which resulted from the efficient inductive effectiveness of the alkyl groups.