Adsorption of trihalomethanes by humin: Batch and fixed bed column studies

被引：39
作者：
Cunha, G. da C. [1 ]
Romao, L. P. C. [1 ]
Santos, M. C. [1 ]
Araujo, B. R. [1 ]
Navickiene, S. [1 ]
de Padua, V. L. [2 ]
机构：
[1] UFS, Dept Chem, BR-49100000 Aracaju, SE, Brazil
[2] Univ Fed Minas Gerais, Dept Sanit & Environm Engn, BR-30110001 Belo Horizonte, MG, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 10期
关键词：
Trihalomethanes; Humin; Biosorption; Water treatment; CHLORINATION BY-PRODUCTS; LOW-COST ADSORBENTS; HEXAVALENT CHROMIUM; ORGANIC-COMPOUNDS; DRINKING-WATER; WASTE-WATER; REMOVAL; BIOSORPTION; DYES; FLOW;
D O I：
10.1016/j.biortech.2009.11.096
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The objective of the present work was to assess the performance of batch and fixed bed column systems, using humin in natura and immobilized on sodium silicate, respectively, for the adsorption of the principal trihalomethanes (THMs) found in water supply systems. Kinetically, adsorption of THMs by humin follows a pseudo-second order reaction, with more than 50% removal in the first 5 min for all compounds studied. and equilibrium described by the Freundlich model reached in 240 min. The THM adsorption results were significant at p < 0.05 for both batch (74.6-83.2% removal) and column (99.7% removal in optimized tests) experiments, and were significantly (p < 0.05) influenced by flow rate and bed height. The work demonstrates the potential of humin for removal of THMs. (C) 2009 Published by Elsevier Ltd.
引用
收藏
页码：3345 / 3354
页数：10
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