Adsorptive removal of heavy metal ions in water using poly(m-phenylenediamine) synthesized by laccase

被引：5

作者：

Xu, Yue ^{[1
,2
]}

Yoo, Ik-Keun ^{[1
]}

Lee, Haksung ^{[1
]}

Ryu, Keungarp ^{[1
]}

机构：

[1] Univ Ulsan, Dept Chem Engn, Coll Engn, Ulsan 44610, South Korea

[2] Shanghai Univ Engn Sci, Sch Chem & Chem Engn, Shanghai, Peoples R China

来源：

CHEMICAL PAPERS | 2019年 / 73卷 / 07期

关键词：

Adsorption; Heavy metals; Laccase; m-Phenylenediamine; Polymer; WASTEWATERS; BIOSORPTION; ADSORBENTS; POLYMERS;

D O I：

10.1007/s11696-019-00723-y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The polymer of m-phenylenediamine (poly(m-PDA)) which was synthesized by mild laccase catalysis in an aqueous buffer (10mM citrate phosphate, pH 3) was investigated for the adsorption of several heavy metal ions including Pb2+, Cu2+, Co2+, and Cr3+. In the preliminary study for the adsorption of Pb2+ by poly(m-PDA), the adsorbed amount of Pb2+ was strongly influenced by solution pH being the highest in distilled water and decreased as solution pH was lowered from 5 to 2. The adsorption isotherms of the four heavy metal ions on poly(m-PDA) were well described by Langmuir equation. Poly(m-PDA) shows high maximum adsorption capacities (q(max)) for Cu2+, Pb2+, and Cr3+ with the values of 556, 526, and 476molg(-1), respectively. This study proposes that the synthesis of polymeric absorbents to remove heavy metal ions from water can be accomplished through simple and environmentally friendly enzymatic methods.

引用

页码：1705 / 1711

页数：7

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