Effect of trace Ag+ adsorption on degradation of organic dye wastes

被引：22

作者：

Huo, Hongyan ^{[1
]}

Su, Haijia ^{[1
]}

Jiang, Wei ^{[1
]}

Tan, Tianwei ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Coll Life Sci & Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

BIOCHEMICAL ENGINEERING JOURNAL | 2009年 / 43卷 / 01期

关键词：

Molecular imprinting; Ag+; Adsorption; Separation; Degradation; waste-water treatment; PHOTOCATALYTIC DEGRADATION; ACTIVATED CARBON; METAL-IONS; BIOSORPTION; REMOVAL; SURFACE; SILVER; WATER; TIO2; MECHANISM;

D O I：

10.1016/j.bej.2008.07.012

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

By the introduction of Ag+, the molecular imprinting technology and photocatalysis technology were associated with each other and the Ag+-imprinted biosorbent (Ag-IB) was prepared. Ag-IB Could first adsorb Ag+ and then degraded Methyl Orange (MO). Firstly the influences of the ionic strength and I)H value in solution on adsorption capacity for Ag+ were studied, and then the effects of Ag+ adsorption capacity on degradability for MO were investigated. The maximal degradation ratio of MO reached over 93% at Ag+ adsorption capacity of 78.0 mg/g after 5.0 h. In contrast to MO, Methylene Blue (MB) and Sunset Yellow (SY) were studied and the degradation ratios could be about 70% and 98% at Ag+ adsorption capacity of 36.9 mg/g, respectively. And XPS analysis showed that Ag+ was reduced to Ag on Ag-IB surface. Furthermore, the mechanism for photocatalytic degradation of MO dye was primarily researched. (C) 2008 Elsevier B.V. All rights reserved

引用

页码：2 / 7

页数：6

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